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+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
Some background
The Imperial Japanese Army Air Force's fighter force, especially the Nakajima Ki-43, had been underestimated in its capability, numbers and the strategy of its commanders. Within a few months, Japanese forces had conquered vast areas of the Pacific and South East Asia. During these campaigns, the ill-prepared Allied air forces in the Pacific suffered devastating losses.
Because of political and cultural ties between the United Kingdom and Australia, British manufacturers were the main source of RAAF aircraft. However, the British aircraft industry had long been hard-pressed to meet the needs of the RAF. Although United States companies had enormous aircraft manufacturing capacity, their output was now intended first and foremost for US air units. Even if aircraft built overseas did become available, they would be shipped long distances in wartime conditions, with consequent delays and losses. As a consequence, CAC came into its own with the development of the Boomerang fighter, which was not operational before late 1942.
Following the outbreak of war with Japan, 51 Hurricane Mk IIs were sent as a stop-gap in crates to Singapore, with 24 pilots, the nucleus of five squadrons. They arrived on 3 January 1942, by which time the Allied fighter squadrons in Singapore, flying Brewster Buffalos, had been overwhelmed in the Malayan campaign. Even though the Hurricanes were a significant progress, they suffered in performance.
Because of inadequate early warning systems, Japanese air raids were able to destroy 30 Hurricanes on the ground in Sumatra, most of them in one raid on 7 February. After Japanese landings in Singapore, on 10 February, only 18 serviceable Hurricanes remained out of the original 99. After Java was invaded, some of the pilots were evacuated by sea to Australia. 31 Hurricane airframes, which had been on the wayby ship, not been assembled and lacked Merlin engines, were directed to Australia in the wake of events.
From these unfinished machines, the Hurricane Mk. VI was quickly devised: the airframes were mated with P&W Twin Wasp engines, which were produced under license at the CAC plant in Lidcombe, Sydney, for the RAAF's Boomerang and Bristol Beaufort. It was clear from the start that these Twin Wasp-powered machines would rather be stop-gaps and no true fighters, rather fighter bombers and more suited for the ground attack role. Hence, like the latest fighters at the time, planning for the Mk. VI included automatic cannons. As no such weapons were manufactured locally, a British-made Hispano-Suiza 20 mm which an Australian airman had collected as a souvenir in the Middle East was reverse engineered – and four of them replaced the eight and partly twelve 0.303 machine guns of the original Mk. IIB machines. Additionally, the pilot received extra armor plating, and the wings were reinforced for external ordnance.
The RAAF Mk. VI Hurricanes carried A60-02 through -32 registrations. As a side note, A60-01 was a single Hurricane Mk.I serialled V-7476. This aircraft served with No.2 and 3 Communications Flights RAAF and was used on occasion for experimental work at RAAF Base Laverton on the outskirts of Melbourne. The aircraft was scrapped in 1945.
The Hurricane Mk. VIs actively took part in Pacific operations with RAAF’s No. 4 Squadron and No. 5 Squadron, being joined by Boomerangs in early 1943. They were operated in New Guinea and during the Solomon Islands Campaign as well as the Borneo Campaign, mostly in the close support role and with marked success.
Flying in pairs (one to observe the ground, the other to observe the air around them), their tasks included bombing, strafing, close infantry support and artillery spotting. When attacking larger enemy formations, the Hurricanes often operated in conjunction with the smaller and much more agile Boomerang fighter. In this role, a Boomerang would get in close to confirm the identity of the target and mark it with a 20 lb (9 kg) smoke bomb with the "cooperating" Hurricane, Beaufort or Havoc delivering the major ordnance in a quick run and from a safer distance. The partnership between RAAF planes and Royal New Zealand Air Force Corsair fighter bombers during the Bougainville Campaign was said to be particularly effective.
The Australian Hurricane Mk. VIs soldiered on until early 1945, when they were finally retired. The Twin Wasp engines were used for spares, all airframes were scrapped, no plane survived the war.
General characteristics:
Crew: 1
Length: 32 ft 3 in (9.84 m)
Wingspan: 40 ft 0 in (12.19 m)
Height: 13 ft 1½ in (4.0 m)
Wing area: 257.5 ft² (23.92 m²)
Empty weight: 5,745 lb (2,605 kg)
Loaded weight: 7,670 lb (3,480 kg)
Max. takeoff weight: 8,710 lb (3,950 kg)
Maximum speed: 331 mph (531 km/h)
Range: 650 mi (1.045 km)
Service ceiling: 36,000 ft (10,970 m)
Rate of climb: 2,303 ft/min (11.7 m/s)
Wing loading: 29.8 lb/ft² (121.9 kg/m²)
Power/mass: 0.15 hp/lb (0.25 kW/kg)
Engine: 1× Pratt & Whitney R-1830 Twin Wasp radial engine, 1,200 hp (895 kW)
Armament: 4× 20 mm (0.787 in) Hispano or CAC cannons; 2x 45-gallon (205 l) drop tanks or 2× 250 or 500 lb (110 or 230 kg) bombs
The kit and its assembly
The Hurricane Mk. VI is a whif, even though with little effort but a good story behind it. The original idea to mate a Hurricane with a radial engine came when I found a drawing of a Russian Hurricane, mated with a Schwezow ASch-82 engine. It looked… interesting. Not certain if this had been done for sure, but a great inspiration.
While browsing through the scrap heap I later found a Twin Wasp engine – that fueled the idea of a respective conversion. The Russian option was dead, but when I checked contemporary planes I came across the small Boomerang, and the historical facts were perfect for an obscure Australian Hurricane variant.
The rest was quickly done: the basic kit is a Hurricane Mk. IIC (Trop) from Hobby Boss, the Twin Wasp comes from a wrecked Matchbox PB4Y Privateer. The original Merlin was simply cut away and replaced by the "new" and relatively small radial engine. A surprisingly easy task, even though I had to widen the area in front of the cockpit by about 1mm to each side. With some putty and a new exhaust pipe with flame dampers, the surgical part was quickly done. A pilot was added, too, in order to distract from the rather bleak cockpit.
To make the plane look more interesting and suitable for a display on the ground, the flaps were lowered (scratch-built) and vertical and horizontal stabilizer were moved away from OOB neutral position. Additionally, the cooler under the fuselage was omitted, what creates together with the radial engine a very different side view. This "Aussie'cane" looks stout but disturbingly realistic, like a Boomerang’s big brother!
Only other changes/additions are a pilot figure and two wing hardpoints, holding bombs. The rest is OOB.
Painting
I have always been a fan of all-green RAAF WWII planes, so I chose such a simple livery. Inspiration came from real-life 4. Squadron Boomerangs, so I adopted the “QE” code and tried to mimic the overall look.
Interior surfaces were kept in Humbrol 78 ('Cockpit Green', dry-painted with light grey). The plane was painted with “Foilage Green” on all outer surfaces - a tone which seems to be heavily debated. Most sources claim FS 34092 (Humbrol 149) as a nowaday's replacement, but to me, this color is just too green and blue-ish. IMHO, “Foilage Green” has a rather yellow-ish hue - Humbrol 75 ("Bronze Green") would be better, if it wasn't too dark.
After some trials I settled for Humbrol 105 ("Army Green"). I think it is a sound compromise. It resembles FS 34096, but is (much) less grey-ish and offers that yellow hue I was looking for. Heavy weathering was done, esp. at the panel lines with dry-painted FS 34096 (Testors) and some panels "bleached" with Humbrol 86 ("Light live Green"). After deacls had been applied, some dry brushing with olive drab and light grey added to the worn and faded look, as well as flaked paint around the engine and the wings' leading egdes and soot stains at exhausts and guns. I wanted to emphasize the harsh climate conditions and duties of this fictional machine.
Only other colors are typical white quick recognition markings on tail and wings, painted with a mix of Humbrol 130 and 196 for a very light grey, with some white dry painting on th eleading edges.For a final clear coat, I used a matte varnish which still has a light gloss to it - “Foilage Green” and RAAF finishes were AFAIK supposed to be semi-matte and of higher quality that USAF paintjobs.
Markings come mostly from the scrap box. The RAAF insignia were taken from a Vultee Vengeance aftermarket sheet by Kanga Decals, which also provided the mid sea grey codes. The Australian registration numbers were improvised with single white letters from TL Modellbau decal sheets.
All in all I am happy with the result - a simple measure, a good story and even a very simple livery that allows room for imagination and painting effects. A nice lil' whif, the "Aussie'cane" Mk. VI.
The Strategic Airlift Capability (SAC) is a consortium of 12 nations to pool resources to purchase and operate Boeing C-17 Globemaster III aircraft for joint strategic airlift purposes (wikipedia). This C17 is officially of the Hungarian airforce (see the triangular flag on the tail) and based at Pápa airforce base in western Hungary. It is a regular visitor at Eindhoven because the Netherlands airforce is one of the participating nations in SAC.
Croome Court is a mid 18th century Neo-Palladian mansion surrounded by an extensive landscaped parkland at Croome D'Abitot, near Pershore in south Worcestershire. The mansion and park were designed by Lancelot "Capability" Brown for George Coventry, 6th Earl of Coventry, and was Brown's first landscape design and first major architectural project. Some of the internal rooms of the mansion were designed by Robert Adam.
The mansion house is owned by Croome Heritage Trust, and is leased to the National Trust who operate it, along with the surrounding parkland, as a tourist attraction. The National Trust own the surrounding parkland, which is also open to the public.
Location[edit]
Croome Court is located near to Croome D'Abitot, in Worcestershire,[1] near Pirton, Worcestershire.[2] The wider estate was established on lands that were once part of the royal forest of Horewell.[3] Traces of these older landscapes, such as unimproved commons and ancient woodlands, can be found across the former Croome Estate.[4]
House[edit]
Croome Court South Portico
History[edit]
The foundations and core of Croome Court, including the central chimney stack structure, date back to the early 1640s.[5] Substantial changes to this early house were made by Gilbert Coventry, 4th Earl of Coventry.[6]
In 1751, George Coventry, the 6th Earl, inherited the estate, along with the existing Jacobean house. He commissioned Lancelot "Capability" Brown, with the assistance of Sanderson Miller, to redesign the house and estate.[7][1] It was Brown's "first flight into the realms of architecture" and a "rare example of his architectural work",[8] and it is an important and seminal work.[9] It was built between 1751 and 1752, and it and Hagley Hall are considered to be the finest examples of Neo-Palladian architecture in Worcestershire. Notable Neo-Palladian features incorporated into Croome Court include the plain exterior and the corner towers with pyramidal roofs (a feature first used by Inigo Jones in the design of Wilton House in Wiltshire).[1] Robert Adam worked on the interior of the building from 1760 onwards.[10]
The house has been visited by George III,[2][11] as well as Queen Victoria[7] during summers when she was a child, and George V (then Duke of York).[11]
A jam factory was built by the 9th Earl of Coventry, near to Pershore railway station, in about 1880, to provide a market for Vale of Evesham fruit growers in times of surplus. Although the Croome connection with jam making had ceased, during the First World War, the building was leased by the Croome Estate Trust to the Huddersfield Fruit Preserving Company as a pulping station.[12]
The First World War deeply affected Croome, with many local casualties, although the house was not requisitioned for the war effort. This is possibly because it was the home of the Lord Lieutenant of the County, who needed a residence for his many official engagements.[13]
During the Second World War Croome Court was requisitioned by the Ministry of Works and leased for a year to the Dutch Government as a possible refuge for Queen Wilhelmina of the Netherlands; to escape the Nazi occupation of the Netherlands. However, evidence shows that they stayed two weeks at the most, perhaps because of the noise and fear created by the proximity of Defford Aerodrome. They later emigrated to Canada.[14]
In 1948 the Croome Estate Trust sold the Court, along with 38 acres (15 ha) of land, to the Roman Catholic Archdiocese of Birmingham, and the mansion became St Joseph's Special School, which was run by nuns[15] from 1950[11] until 1979.[15]
The house was listed on 11 August 1952; it is currently Grade I listed.[10]
In 1979 the hall was taken over by the International Society for Krishna Consciousness (Hare Krishna movement), who used it as their UK headquarters and a training college[16] called Chaitanya College,[15] run by 25 members of the movement.[16] During their tenure they repainted the Dining Room.[17] In 1984 they had to leave the estate for financial reasons. They held a festival at the hall in 2011.[16]
From 1984 onwards various owners tried to use the property as a training centre; apartments; a restaurant and conference centre; and a hotel and golf course,[15] before once more becoming a private family home,[2][15] with outbuildings converted to private houses.[15]
The house was purchased by the Croome Heritage Trust, a registered charity,[18] in October 2007,[19] and it is now managed by the National Trust as a tourist attraction. It opened to the public in September 2009, at which point six of the rooms had restored, costing £400,000, including the Saloon. It was estimated that another £4 million[2][20] to £4.8 million would be needed to restore the entire building. Fundraising activities for the restoration included a 2011 raffle for a Morgan sports car organised by Lord and Lady Flight. After the restoration is complete, a 999-year lease on the building will be granted to the National Trust.[21] An oral history project to record recollections about Croome was funded by the Heritage Lottery Fund.[15] As of 2009, the service wing was empty and in need of substantial repair.[22]
Exterior[edit]
The mansion is faced with Bath stone,[7] limestone ashlar, and has both north and south facing fronts. It has a basement and two stories, with three stories in the end pavilions. A slate roof, with pyramid roofs over the corner towers, tops the building, along with three pair-linked chimneys along the axis of the house.[10]
Both fronts have 11 bays, split into three central sets of three each, and one additional bay each side. The north face has a pedimented centre, with two balustraded staircases leading to a Roman Doric doorcase. The south face has a projecting Ionic tetrastyle portico and Venetian windows. It has a broad staircase, with cast stone sphinxes on each side, leading to a south door topped with a cornice on consoles. The wings have modillion cornice and balustrade.[10]
A two-story L-shaped service wing is attached to the east side of the mansion. It is made of red brick and stone, with slate roofs.[10] It was designed by Capability Brown in 1751-2.[22] On the far side of the service wing, a wall connects it to a stable court.[10]
Interior[edit]
The interior of the house was designed partially by Capability Brown, with plasterwork by G. Vassalli, and partially by Robert Adam, with plasterwork by J. Rose Jr. It has a central spine corridor. A stone staircase, with iron balusters, is at the east end.[10]
The entrance hall is on the north side of the building, and has four fluted Doric columns, along with moulded doorcases. To the east of the entrance hall is the dining room, which has a plaster ceiling and cornice, while to the west is a billiard room, featuring fielded panelling, a plaster cornice, and a rococo fireplace. The three rooms were probably decorated around 1758-59 by Capability Brown.[10] The dining room was vibrantly repainted by the Hare Krishnas in the 1970s-80s.[17]
The central room on the south side is a saloon, probably by Brown and Vassalli. It has an elaborate ceiling, with three panels, deep coving, and a cornice, along with two Ionic fireplaces, and Palladian doorcases.[10] George III was entertained by George Coventry, the 6th Earl, in the house's Saloon.[2] A drawing room is to the west of the saloon, and features rococo plasterwork and a marble fireplace.[10]
To the east of the saloon is the Tapestry Room.[10] This was designed in 1763-71, based on a design by Robert Adam, and contained tapestries and furniture covers possibly designed by Jacques Germain Soufflot, and made by Manufacture Nationale des Gobelins.[23] Around 1902 the ninth Earl sold the tapestries and seating to a Parisian dealer. In 1949 the Samuel H. Kress Foundation purchased the ceiling, floor, mantlepiece, chair rails, doors and the door surrounds, which were donated to the Metropolitan Museum of Art, New York, in 1958. In 1959 the Kress Foundation also helped the Metropolitan Museum acquire the chair and sofa frames, which they recovered using the original tapestry seats.[7][23] A copy of the ceiling was installed in place of the original.[10] As of 2016, the room is displayed as it would have looked after the tapestries had been sold, with a jug and ewer on display as the only original decoration of the room that remains in it. The adjacent library room is used to explain what happened to the tapestry room;[17] the former library was designed by Adam, and was dismantled except for the marble fireplace.[10]
At the west side of the building is a long gallery,[10] which was designed by Robert Adam and installed between 1761 and 1766. It is the best preserved of the original interior (little of the rest has survived in situ).[1] It has an octagonal panelled ceiling, and plaster reliefs of griffins. A half-hexagonal bay faces the garden. The room also contains a marble caryatid fireplace designed by J Wilton.[10] As of 2016, modern sculptures are displayed in empty niches along the Long Gallery
wikipedia
Legend has it this bridge was part of the London to Bath route frequented by Charles Dickens and it is haunted by a headless coachman. But I'm not convinced as it is rather narrow for a coach & horses to get through and as there are also other sham structures on this estate designed by Lancelot "Capability" Brown, it seems this could be one too!!
Pasted from Wikipedia: Bell-Boeing V-22 Osprey
• • • • •
The Bell-Boeing V-22 Osprey is a multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The V-22 originated from the U.S. Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. It was developed jointly by the Bell Helicopter, and Boeing Helicopters team, known as Bell Boeing, which produce the aircraft.[4] The V-22 first flew in 1989, and began years of flight testing and design alterations.
The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007. The Osprey's other operator, the U.S. Air Force fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed for combat operations in Iraq and Afghanistan.
Contents
•• 1.2 Flight testing and design changes
• 2 Design
• 8 Notable appearances in media
Development
Early development
The failure of the Iran hostage rescue mission in 1980 demonstrated to the United States military a need[5] for "a new type of aircraft, that could not only take off and land vertically but also could carry combat troops, and do so at speed."[6] The U.S. Department of Defense began the Joint-service Vertical take-off/landing Experimental (JVX) aircraft program in 1981, under U.S. Army leadership. Later the U.S. Navy/Marine Corps took the lead.[7][8] The JVX combined requirements from the Marine Corps, Air Force, Army and Navy.[9][10] A request for proposals (RFP) was issued in December 1982 for JVX preliminary design work. Interest in the program was expressed by Aérospatiale, Bell Helicopter, Boeing Vertol, Grumman, Lockheed, and Westland. The DoD pushed for contractors to form teams. Bell partnered with Boeing Vertol. The Bell Boeing team submitted a proposal for a enlarged version of the Bell XV-15 prototype on 17 February 1983. This was the only proposal received and a preliminary design contract was awarded on 26 April 1983.[11][12]
The JVX aircraft was designated V-22 Osprey on 15 January 1985; by March that same year the first six prototypes were being produced, and Boeing Vertol was expanded to deal with the project workload.[13][14] Work has been split evenly between Bell and Boeing. Bell Helicopter manufactures and integrates the wing, nacelles, rotors, drive system, tail surfaces, and aft ramp, as well as integrates the Rolls-Royce engines and performs final assembly. Boeing Helicopters manufactures and integrates the fuselage, cockpit, avionics, and flight controls.[4][15] The USMC variant of the Osprey received the MV-22 designation and the Air Force variant received CV-22; reversed from normal procedure to prevent Marine Ospreys from having a conflicting designation with aircraft carriers (CV).[16] Full-scale development of the V-22 tilt-rotor aircraft began in 1986.[2] On 3 May 1986 the Bell-Boeing partnership was awarded a $1.714 billion contract for V-22 aircraft by the Navy, thus at this point the project had acquisition plans with all four arms of the U.S. military.[17]
The first V-22 was rolled out with significant media attention in May 1988.[18][19] However the project suffered several political blows. Firstly in the same year, the Army left the program, citing a need to focus its budget on more immediate aviation programs.[20] The project also faced considerable dialogue in the Senate, surviving two votes that both could have resulted in cancellation.[21][22] Despite the Senate's decision, the Department of Defense instructed the Navy not to spend more money on the Osprey.[23] At the same time, the Bush administration sought the cancellation of the project.[23]
Flight testing and design changes
The first of six MV-22 prototypes first flew on 19 March 1989 in the helicopter mode,[24] and on 14 September 1989 as a fixed-wing plane.[25] The third and fourth prototypes successfully completed the Osprey's first Sea Trials on the USS Wasp in December 1990.[26] However, the fourth and fifth prototypes crashed in 1991-92.[27] Flight tests were resumed in August 1993 after changes were incorporated in the prototypes.[2] From October 1992 until April 1993, Bell and Boeing redesigned the V-22 to reduce empty weight, simplify manufacture and reduce production costs. This redesigned version became the B-model.[28]
Flight testing of four full-scale development V-22s began in early 1997 when the first pre-production V-22 was delivered to the Naval Air Warfare Test Center, Naval Air Station Patuxent River, Maryland. The first EMD flight took place on 5 February 1997. The first of four low rate initial production aircraft, ordered on 28 April 1997, was delivered on 27 May 1999. Osprey number 10 completed the program's second Sea Trials, this time from the USS Saipan in January 1999.[2] During external load testing in April 1999, Boeing used a V-22 to lift and transport the M777 howitzer.[29] In 2000, Boeing announced that the V-22 would be fitted with a nose-mounted GAU-19 Gatling gun,[30] but the GAU-19 gun was later canceled.[31]
In 2000, there were two further fatal crashes, killing a total of 19 Marines, and the production was again halted while the cause of these crashes was investigated and various parts were redesigned.[32] The V-22 completed its final operational evaluation in June 2005. The evaluation was deemed successful; events included long range deployments, high altitude, desert and shipboard operations. The problems identified in various accidents had been addressed.[33]
Controversy
The V-22's development process has been long and controversial, partly due to its large cost increases.[34] When the development budget, first planned for $2.5 billion in 1986, increased to a projected $30 billion in 1988, then-Defense Secretary Dick Cheney tried to zero out its funding. He was eventually overruled by Congress.[32] As of 2008, $27 billion have been spent on the Osprey program and another $27.2 billion will be required to complete planned production numbers by the end of the program.[2]
The V-22 squadron's former commander at Marine Corps Air Station New River, Lt. Colonel Odin Lieberman, was relieved of duty in 2001 after allegations that he instructed his unit that they needed to falsify maintenance records to make the plane appear more reliable.[2][35] Three officers were later implicated in the falsification scandal.[34]
The aircraft is incapable of autorotation, and is therefore unable to land safely in helicopter mode if both engines fail. A director of the Pentagon's testing office in 2005 said that if the Osprey loses power while flying like a helicopter below 1,600 feet (490 m), emergency landings "are not likely to be survivable". But Captain Justin (Moon) McKinney, a V-22 pilot, says that this will not be a problem, "We can turn it into a plane and glide it down, just like a C-130".[31] A complete loss of power would require the failure of both engines, as a drive shaft connects the nacelles through the wing; one engine can power both proprotors.[36] While vortex ring state (VRS) contributed to a deadly V-22 accident, the aircraft is less susceptible to the condition than conventional helicopters and recovers more quickly.[5] The Marines now train new pilots in the recognition of and recovery from VRS and have instituted operational envelope limits and instrumentation to help pilots avoid VRS conditions.[32][37]
It was planned in 2000 to equip all V-22s with a nose-mounted Gatling gun, to provide "the V-22 with a strong defensive firepower capability to greatly increase the aircraft's survivability in hostile actions."[30] The nose gun project was canceled however, leading to criticism by retired Marine Corps Commandant General James L. Jones, who is not satisfied with the current V-22 armament.[31] A belly-mounted turret was later installed on some of the first V-22s sent to the War in Afghanistan in 2009.[38]
With the first combat deployment of the MV-22 in October 2007, Time Magazine ran an article condemning the aircraft as unsafe, overpriced, and completely inadequate.[31] The Marine Corps, however, responded with the assertion that much of the article's data were dated, obsolete, inaccurate, and reflected expectations that ran too high for any new field of aircraft.[39]
Recent development
On 28 September 2005, the Pentagon formally approved full-rate production for the V-22.[40] The plan is to boost production from 11 a year to between 24 and 48 a year by 2012. Of the 458 total planned, 360 are for the Marine Corps, 48 for the Navy, and 50 for the Air Force at an average cost of $110 million per aircraft, including development costs.[2] The V-22 had an incremental flyaway cost of $70 million per aircraft in 2007,[3] but the Navy hopes to shave about $10 million off that cost after a five-year production contract starts in 2008.[41]
The Bell-Boeing Joint Project Office in Amarillo, Texas will design a new integrated avionics processor to resolve electronics obsolescence issues and add new network capabilities.[42]
Design
The Osprey is the world's first production tiltrotor aircraft, with one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. It is classified as a powered lift aircraft by the Federal Aviation Administration.[43] For takeoff and landing, it typically operates as a helicopter with the nacelles vertical (rotors horizontal). Once airborne, the nacelles rotate forward 90° in as little as 12 seconds for horizontal flight, converting the V-22 to a more fuel-efficient, higher-speed turboprop airplane. STOL rolling-takeoff and landing capability is achieved by having the nacelles tilted forward up to 45°. For compact storage and transport, the V-22's wing rotates to align, front-to-back, with the fuselage. The proprotors can also fold in a sequence taking 90 seconds.[44]
Most Osprey missions will use fixed wing flight 75 percent or more of the time, reducing wear and tear on the aircraft and reducing operational costs.[45] This fixed wing flight is higher than typical helicopter missions allowing longer range line-of-sight communications and so improved command and control.[2] Boeing has stated the V-22 design loses 10% of its vertical lift over a Tiltwing design when operating in helicopter mode because of airflow resistance due to the wings, but that the Tiltrotor design has better short takeoff and landing performance.[46]
The V-22 is equipped with a glass cockpit, which incorporates four Multi-function displays (MFDs) and one shared Central Display Unit (CDU), allowing the pilots to display a variety of images including: digimaps centered or decentered on current position, FLIR imagery, primary flight instruments, navigation (TACAN, VOR, ILS, GPS, INS), and system status. The flight director panel of the Cockpit Management System (CMS) allows for fully-coupled (aka: autopilot) functions which will take the aircraft from forward flight into a 50-foot hover with no pilot interaction other than programming the system.[47] The glass cockpit of the canceled CH-46X was derived from the V-22.[48]
The V-22 is a fly-by-wire aircraft with triple-redundant flight control systems.[49] With the nacelles pointing straight up in conversion mode at 90° the flight computers command the aircraft to fly like a helicopter, with cyclic forces being applied to a conventional swashplate at the rotor hub. With the nacelles in airplane mode (0°) the flaperons, rudder, and elevator fly the aircraft like an airplane. This is a gradual transition and occurs over the rotation range of the nacelles. The lower the nacelles, the greater effect of the airplane-mode control surfaces.[50] The nacelles can rotate past vertical to 97.5° for rearward flight.[51][52]
The Osprey can be armed with one M240 7.62x51mm NATO (.308 in caliber) or M2 .50 in caliber (12.7 mm) machine gun on the loading ramp, that can be fired rearward when the ramp is lowered. A GAU-19 three-barrel .50 in gatling gun mounted below the V-22's nose has also been studied for future upgrade.[31][53] BAE Systems developed a remotely operated turreted weapons system for the V-22,[54] which was installed on half of the first V-22s deployed to Afghanistan in 2009.[38] The 7.62 mm belly gun turret is remotely operated by a gunner inside the aircraft, who acquires targets with a separate pod using color television and forward looking infrared imagery.
U.S. Naval Air Systems Command is working on upgrades to increase the maximum speed from 250 knots (460 km/h; 290 mph) to 270 knots (500 km/h; 310 mph), increase helicopter mode altitude limit from 10,000 feet (3,000 m) to 12,000 feet (3,700 m) or 14,000 feet (4,300 m), and increase lift performance.[55]
Operational history
US Marine Corps
Marine Corps crew training on the Osprey has been conducted by VMMT-204 since March 2000. On 3 June 2005, the Marine Corps helicopter squadron Marine Medium Helicopter 263 (HMM-263), stood down to begin the process of transitioning to the MV-22 Osprey.[56] On 8 December 2005, Lieutenant General Amos, commander of the II MEF, accepted the delivery of the first fleet of MV-22s, delivered to HMM-263. The unit reactivated on 3 March 2006 as the first MV-22 squadron and was redesignated VMM-263. On 31 August 2006, VMM-162 (the former HMM-162) followed suit. On 23 March 2007, HMM-266 became Marine Medium Tiltrotor Squadron 266 (VMM-266) at Marine Corps Air Station New River, North Carolina.[57]
The Osprey has been replacing existing CH-46 Sea Knight squadrons.[58] The MV-22 reached initial operational capability (IOC) with the U.S. Marine Corps on 13 June 2007.[1] On 10 July 2007 an MV-22 Osprey landed aboard the Royal Navy aircraft carrier, HMS Illustrious in the Atlantic Ocean. This marked the first time a V-22 had landed on any non-U.S. vessel.[59]
On 13 April 2007, the U.S. Marine Corps announced that it would be sending ten V-22 aircraft to Iraq, the Osprey's first combat deployment. Marine Corps Commandant, General James Conway, indicated that over 150 Marines would accompany the Osprey set for September deployment to Al-Asad Airfield.[60][61] On 17 September 2007, ten MV-22Bs of VMM-263 left for Iraq aboard the USS Wasp. The decision to use a ship rather than use the Osprey's self-deployment capability was made because of concerns over icing during the North Atlantic portion of the trip, lack of available KC-130s for mid-air refueling, and the availability of the USS Wasp.[62]
The Osprey has provided support in Iraq, racking up some 2,000 flight hours over three months with a mission capable availability rate of 68.1% as of late-January 2008.[63] They are primarily used in Iraq's western Anbar province for routine cargo and troop movements, and also for riskier "aero-scout" missions. General David Petraeus, the top U.S. military commander in Iraq, used one to fly around Iraq on Christmas Day 2007 to visit troops.[64] Then-presidential candidate Barack Obama also flew in Ospreys during his high profile 2008 tour of Iraq.[65]
The only major problem has been obtaining the necessary spare parts to maintain the aircraft.[66] The V-22 had flown 3,000 sorties totaling 5,200 hours in Iraq as of July 2008.[67] USMC leadership expect to deploy MV-22s to Afghanistan in 2009.[66][68] General George J. Trautman, III praised the increased range of the V-22 over the legacy helicopters in Iraq and said that "it turned his battle space from the size of Texas into the size of Rhode Island."[69]
Naval Air Systems Command has devised a temporary fix for sailors to place portable heat shields under Osprey engines to prevent damage to the decks of some of the Navy's smaller amphibious ships, but they determined that a long term solution to the problem would require these decks be redesigned with heat resistant deck coatings, passive thermal barriers and changes in ship structure in order to operate V-22s and F-35Bs.[70]
A Government Accountability Office study reported that by January 2009 the Marines had 12 MV-22s operating in Iraq and they managed to successfully complete all assigned missions. The same report found that the V-22 deployments had mission capable rates averaging 57% to 68% and an overall full mission capable rate of only 6%. It also stated that the aircraft had shown weakness in situational awareness, maintenance, shipboard operations and the ability to transport troops and external cargo.[71] That study also concluded that the "deployments confirmed that the V-22’s enhanced speed and range enable personnel and internal cargo to be transported faster and farther than is possible with the legacy helicopters it is replacing".[71]
The MV-22 saw its first offensive combat mission, Operation Cobra's Anger on 4 December 2009. Ospreys assisted in inserting 1,000 Marines and 150 Afghan troops into the Now Zad Valley of Helmand Province in southern Afghanistan to disrupt communication and supply lines of the Taliban.[38] In January 2010 the MV-22 Osprey is being sent to Haiti as part of Operation Unified Response relief efforts after the earthquake there. This will be the first use the Marine V-22 in a humanitarian mission.[72]
US Air Force
The Air Force's first operational CV-22 Osprey was delivered to the 58th Special Operations Wing (58th SOW) at Kirtland Air Force Base, New Mexico on 20 March 2006. This and subsequent aircraft will become part of the 58th SOW's fleet of aircraft used for training pilots and crew members for special operations use.[73] On 16 November 2006, the Air Force officially accepted the CV-22 in a ceremony conducted at Hurlburt Field, Florida.[74]
The US Air Force's first operational deployment of the Osprey sent four CV-22s to Mali in November 2008 in support of Exercise Flintlock. The CV-22s flew nonstop from Hurlburt Field, Florida with in-flight refueling.[5] AFSOC declared that the 8th Special Operations Squadron reached Initial Operational Capability on 16 March 2009, with six of its planned nine CV-22s operational.[75]
In June 2009, CV-22s of the 8th Special Operations Squadron delivered 43,000 pounds (20,000 kg) of humanitarian supplies to remote villages in Honduras that were not accessible by conventional vehicles.[76] In November 2009, the 8th SO Squadron and its six CV-22s returned from a three-month deployment in Iraq.[77]
The first possible combat loss of an Osprey occurred on 9 April, 2010, as a CV-22 went down near Qalat, Zabul Province, Afghanistan, killing four.[78][79]
Potential operators
In 1999 the V-22 was studied for use in the United Kingdom's Royal Navy,[80] it has been raised several times as a candidate for the role of Maritime Airborne Surveillance and Control (MASC).[81]
Israel had shown interest in the purchase of MV-22s, but no order was placed.[82][83] Flightglobal reported in late 2009 that Israel has decided to wait for the CH-53K instead.[84]
The V-22 Osprey is a candidate for the Norwegian All Weather Search and Rescue Helicopter (NAWSARH) that is planned to replace the Westland Sea King Mk.43B of the Royal Norwegian Air Force in 2015.[85] The other candidates for the NAWSARH contract of 10-12 helicopters are AgustaWestland AW101 Merlin, Eurocopter EC225, NHIndustries NH90 and Sikorsky S-92.[86]
Bell Boeing has made an unsolicited offer of the V-22 for US Army medical evacuation needs.[87] However the Joint Personnel Recovery Agency issued a report that said that a common helicopter design would be needed for both combat recovery and medical evacuation and that the V-22 would not be suitable for recovery missions because of the difficulty of hoist operations and lack of self-defense capabilities.[88]
The US Navy remains a potential user of the V-22, but its role and mission with the Navy remains unclear. The latest proposal is to replace the C-2 Greyhound with the V-22 in the fleet logistics role. The V-22 would have the advantage of being able to land on and support non-carriers with rapid delivery of supplies and people between the ships of a taskforce or to ships on patrol beyond helicopter range.[89] Loren B. Thompson of the Lexington Institute has suggested V-22s for use in combat search and rescue and Marine One VIP transport, which also need replacement aircraft.[90]
Variants
• V-22A
•• Pre-production full-scale development aircraft used for flight testing. These are unofficially considered A-variants after 1993 redesign.[91]
• HV-22
•• The U.S. Navy considered an HV-22 to provide combat search and rescue, delivery and retrieval of special warfare teams along with fleet logistic support transport. However, it chose the MH-60S for this role in 1992.[92]
• SV-22
•• The proposed anti-submarine warfare Navy variant. The Navy studied the SV-22 in the 1980s to replace S-3 and SH-2 aircraft.[93]
• MV-22B
•• Basic U.S. Marine Corps transport; original requirement for 552 (now 360). The Marine Corps is the lead service in the development of the V-22 Osprey. The Marine Corps variant, the MV-22B, is an assault transport for troops, equipment and supplies, capable of operating from ships or from expeditionary airfields ashore. It is replacing the Marine Corps' CH-46E[57] and CH-53D.[94]
• CV-22B
•• Air Force variant for the U.S. Special Operations Command (USSOCOM). It will conduct long-range, special operations missions, and is equipped with extra fuel tanks and terrain-following radar.[95][96]
Operators
•• 8th Special Operations Squadron (8 SOS) at Hurlburt Field, Florida
•• 71st Special Operations Squadron (71 SOS) at Kirtland Air Force Base, New Mexico
•• 20th Special Operations Squadron (20 SOS) at Cannon Air Force Base, New Mexico
•• VMM-161
•• VMM-162
•• VMM-261
•• VMM-263
•• VMM-264
•• VMM-266
•• VMM-365
•• VMMT-204 - Training squadron
•• VMX-22 - Marine Tiltrotor Operational Test and Evaluation Squadron
Notable accidents
Main article: Accidents and incidents involving the V-22 Osprey
From 1991 to 2000 there were four significant crashes, and a total of 30 fatalities, during testing.[32] Since becoming operational in 2007, the V-22 has had one possible combat loss due to an unknown cause, no losses due to accidents, and seven other notable, but minor, incidents.
• On 11 June 1991, a mis-wired flight control system led to two minor injuries when the left nacelle struck the ground while the aircraft was hovering 15 feet (4.6 m) in the air, causing it to bounce and catch fire.[97]
• On 20 July 1992, a leaking gearbox led to a fire in the right nacelle, causing the aircraft to drop into the Potomac River in front of an audience of Congressmen and other government officials at Quantico, killing all seven on board and grounding the aircraft for 11 months.[98]
• On 8 April 2000, a V-22 loaded with Marines to simulate a rescue, attempted to land at Marana Northwest Regional Airport in Arizona, stalled when its right rotor entered vortex ring state, rolled over, crashed, and exploded, killing all 19 on board.[37]
• On 11 December 2000, after a catastrophic hydraulic leak and subsequent software instrument failure, a V-22 fell 1,600 feet (490 m) into a forest in Jacksonville, North Carolina, killing all four aboard. This caused the Marine Corps to ground their fleet of eight V-22s, the second grounding that year.[99][100]
Specifications (MV-22B)
Data from Boeing Integrated Defense Systems,[101] Naval Air Systems Command,[102] US Air Force CV-22 fact sheet,[95] Norton,[103] and Bell[104]
General characteristics
• Crew: Four (pilot, copilot and two flight engineers)
• Capacity: 24 troops (seated), 32 troops (floor loaded) or up to 15,000 lb (6,800 kg) of cargo (dual hook)
• Length: 57 ft 4 in (17.5 m)
• Rotor diameter: 38 ft 0 in (11.6 m)
• Wingspan: 45 ft 10 in (14 m)
• Width with rotors: 84 ft 7 in (25.8 m)
• Height: 22 ft 1 in/6.73 m; overall with nacelles vertical (17 ft 11 in/5.5 m; at top of tailfins)
• Disc area: 2,268 ft² (212 m²)
• Wing area: 301.4 ft² (28 m²)
• Empty weight: 33,140 lb (15,032 kg)
• Loaded weight: 47,500 lb (21,500 kg)
• Max takeoff weight: 60,500 lb (27,400 kg)
• Powerplant: 2× Rolls-Royce Allison T406/AE 1107C-Liberty turboshafts, 6,150 hp (4,590 kW) each
Performance
• Maximum speed: 250 knots (460 km/h, 290 mph) at sea level / 305 kn (565 km/h; 351 mph) at 15,000 ft (4,600 m)[105]
• Cruise speed: 241 knots (277 mph, 446 km/h) at sea level
• Range: 879 nmi (1,011 mi, 1,627 km)
• Combat radius: 370 nmi (426 mi, 685 km)
• Ferry range: 1,940 nmi (with auxiliary internal fuel tanks)
• Service ceiling: 26,000 ft (7,925 m)
• Rate of climb: 2,320 ft/min (11.8 m/s)
• Disc loading: 20.9 lb/ft² at 47,500 lb GW (102.23 kg/m²)
• Power/mass: 0.259 hp/lb (427 W/kg)
Armament
• 1× M240 machine gun on ramp, optional
Notable appearances in media
Main article: Aircraft in fiction#V-22 Osprey
See also
• Elizabeth A. Okoreeh-Baah, USMC - first female to pilot a V-22 Osprey
Related development
Comparable aircraft
Related lists
• List of military aircraft of the United States
References
Bibliography
• Markman, Steve and Bill Holder. "Bell/Boeing V-22 Osprey Tilt-Engine VTOL Transport (U.S.A.)". Straight Up: A History of Vertical Flight. Schiffer Publishing, 2000. ISBN 0-7643-1204-9.
• Norton, Bill. Bell Boeing V-22 Osprey, Tiltrotor Tactical Transport. Midland Publishing, 2004. ISBN 1-85780-165-2.
External links
Wikimedia Commons has media related to: V-22 Osprey
• V-22 Osprey web, and www.history.navy.mil/planes/v-22.html
• CV-22 fact sheet on USAF site
• www.globalsecurity.org/military/systems/aircraft/v-22.htm
• www.airforce-technology.com/projects/osprey/
• "Flight of the Osprey", US Navy video of V-22 operations
Chatsworth's gardens were designed by the famous landscape designer Capability Brown. The gardens are just starting to green up and are full of spring flowers. April 2017.
Pasted from Wikipedia: Bell-Boeing V-22 Osprey
• • • • •
The Bell-Boeing V-22 Osprey is a multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The V-22 originated from the U.S. Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. It was developed jointly by the Bell Helicopter, and Boeing Helicopters team, known as Bell Boeing, which produce the aircraft.[4] The V-22 first flew in 1989, and began years of flight testing and design alterations.
The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007. The Osprey's other operator, the U.S. Air Force fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed for combat operations in Iraq and Afghanistan.
Contents
•• 1.2 Flight testing and design changes
• 2 Design
• 8 Notable appearances in media
Development
Early development
The failure of the Iran hostage rescue mission in 1980 demonstrated to the United States military a need[5] for "a new type of aircraft, that could not only take off and land vertically but also could carry combat troops, and do so at speed."[6] The U.S. Department of Defense began the Joint-service Vertical take-off/landing Experimental (JVX) aircraft program in 1981, under U.S. Army leadership. Later the U.S. Navy/Marine Corps took the lead.[7][8] The JVX combined requirements from the Marine Corps, Air Force, Army and Navy.[9][10] A request for proposals (RFP) was issued in December 1982 for JVX preliminary design work. Interest in the program was expressed by Aérospatiale, Bell Helicopter, Boeing Vertol, Grumman, Lockheed, and Westland. The DoD pushed for contractors to form teams. Bell partnered with Boeing Vertol. The Bell Boeing team submitted a proposal for a enlarged version of the Bell XV-15 prototype on 17 February 1983. This was the only proposal received and a preliminary design contract was awarded on 26 April 1983.[11][12]
The JVX aircraft was designated V-22 Osprey on 15 January 1985; by March that same year the first six prototypes were being produced, and Boeing Vertol was expanded to deal with the project workload.[13][14] Work has been split evenly between Bell and Boeing. Bell Helicopter manufactures and integrates the wing, nacelles, rotors, drive system, tail surfaces, and aft ramp, as well as integrates the Rolls-Royce engines and performs final assembly. Boeing Helicopters manufactures and integrates the fuselage, cockpit, avionics, and flight controls.[4][15] The USMC variant of the Osprey received the MV-22 designation and the Air Force variant received CV-22; reversed from normal procedure to prevent Marine Ospreys from having a conflicting designation with aircraft carriers (CV).[16] Full-scale development of the V-22 tilt-rotor aircraft began in 1986.[2] On 3 May 1986 the Bell-Boeing partnership was awarded a $1.714 billion contract for V-22 aircraft by the Navy, thus at this point the project had acquisition plans with all four arms of the U.S. military.[17]
The first V-22 was rolled out with significant media attention in May 1988.[18][19] However the project suffered several political blows. Firstly in the same year, the Army left the program, citing a need to focus its budget on more immediate aviation programs.[20] The project also faced considerable dialogue in the Senate, surviving two votes that both could have resulted in cancellation.[21][22] Despite the Senate's decision, the Department of Defense instructed the Navy not to spend more money on the Osprey.[23] At the same time, the Bush administration sought the cancellation of the project.[23]
Flight testing and design changes
The first of six MV-22 prototypes first flew on 19 March 1989 in the helicopter mode,[24] and on 14 September 1989 as a fixed-wing plane.[25] The third and fourth prototypes successfully completed the Osprey's first Sea Trials on the USS Wasp in December 1990.[26] However, the fourth and fifth prototypes crashed in 1991-92.[27] Flight tests were resumed in August 1993 after changes were incorporated in the prototypes.[2] From October 1992 until April 1993, Bell and Boeing redesigned the V-22 to reduce empty weight, simplify manufacture and reduce production costs. This redesigned version became the B-model.[28]
Flight testing of four full-scale development V-22s began in early 1997 when the first pre-production V-22 was delivered to the Naval Air Warfare Test Center, Naval Air Station Patuxent River, Maryland. The first EMD flight took place on 5 February 1997. The first of four low rate initial production aircraft, ordered on 28 April 1997, was delivered on 27 May 1999. Osprey number 10 completed the program's second Sea Trials, this time from the USS Saipan in January 1999.[2] During external load testing in April 1999, Boeing used a V-22 to lift and transport the M777 howitzer.[29] In 2000, Boeing announced that the V-22 would be fitted with a nose-mounted GAU-19 Gatling gun,[30] but the GAU-19 gun was later canceled.[31]
In 2000, there were two further fatal crashes, killing a total of 19 Marines, and the production was again halted while the cause of these crashes was investigated and various parts were redesigned.[32] The V-22 completed its final operational evaluation in June 2005. The evaluation was deemed successful; events included long range deployments, high altitude, desert and shipboard operations. The problems identified in various accidents had been addressed.[33]
Controversy
The V-22's development process has been long and controversial, partly due to its large cost increases.[34] When the development budget, first planned for $2.5 billion in 1986, increased to a projected $30 billion in 1988, then-Defense Secretary Dick Cheney tried to zero out its funding. He was eventually overruled by Congress.[32] As of 2008, $27 billion have been spent on the Osprey program and another $27.2 billion will be required to complete planned production numbers by the end of the program.[2]
The V-22 squadron's former commander at Marine Corps Air Station New River, Lt. Colonel Odin Lieberman, was relieved of duty in 2001 after allegations that he instructed his unit that they needed to falsify maintenance records to make the plane appear more reliable.[2][35] Three officers were later implicated in the falsification scandal.[34]
The aircraft is incapable of autorotation, and is therefore unable to land safely in helicopter mode if both engines fail. A director of the Pentagon's testing office in 2005 said that if the Osprey loses power while flying like a helicopter below 1,600 feet (490 m), emergency landings "are not likely to be survivable". But Captain Justin (Moon) McKinney, a V-22 pilot, says that this will not be a problem, "We can turn it into a plane and glide it down, just like a C-130".[31] A complete loss of power would require the failure of both engines, as a drive shaft connects the nacelles through the wing; one engine can power both proprotors.[36] While vortex ring state (VRS) contributed to a deadly V-22 accident, the aircraft is less susceptible to the condition than conventional helicopters and recovers more quickly.[5] The Marines now train new pilots in the recognition of and recovery from VRS and have instituted operational envelope limits and instrumentation to help pilots avoid VRS conditions.[32][37]
It was planned in 2000 to equip all V-22s with a nose-mounted Gatling gun, to provide "the V-22 with a strong defensive firepower capability to greatly increase the aircraft's survivability in hostile actions."[30] The nose gun project was canceled however, leading to criticism by retired Marine Corps Commandant General James L. Jones, who is not satisfied with the current V-22 armament.[31] A belly-mounted turret was later installed on some of the first V-22s sent to the War in Afghanistan in 2009.[38]
With the first combat deployment of the MV-22 in October 2007, Time Magazine ran an article condemning the aircraft as unsafe, overpriced, and completely inadequate.[31] The Marine Corps, however, responded with the assertion that much of the article's data were dated, obsolete, inaccurate, and reflected expectations that ran too high for any new field of aircraft.[39]
Recent development
On 28 September 2005, the Pentagon formally approved full-rate production for the V-22.[40] The plan is to boost production from 11 a year to between 24 and 48 a year by 2012. Of the 458 total planned, 360 are for the Marine Corps, 48 for the Navy, and 50 for the Air Force at an average cost of $110 million per aircraft, including development costs.[2] The V-22 had an incremental flyaway cost of $70 million per aircraft in 2007,[3] but the Navy hopes to shave about $10 million off that cost after a five-year production contract starts in 2008.[41]
The Bell-Boeing Joint Project Office in Amarillo, Texas will design a new integrated avionics processor to resolve electronics obsolescence issues and add new network capabilities.[42]
Design
The Osprey is the world's first production tiltrotor aircraft, with one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. It is classified as a powered lift aircraft by the Federal Aviation Administration.[43] For takeoff and landing, it typically operates as a helicopter with the nacelles vertical (rotors horizontal). Once airborne, the nacelles rotate forward 90° in as little as 12 seconds for horizontal flight, converting the V-22 to a more fuel-efficient, higher-speed turboprop airplane. STOL rolling-takeoff and landing capability is achieved by having the nacelles tilted forward up to 45°. For compact storage and transport, the V-22's wing rotates to align, front-to-back, with the fuselage. The proprotors can also fold in a sequence taking 90 seconds.[44]
Most Osprey missions will use fixed wing flight 75 percent or more of the time, reducing wear and tear on the aircraft and reducing operational costs.[45] This fixed wing flight is higher than typical helicopter missions allowing longer range line-of-sight communications and so improved command and control.[2] Boeing has stated the V-22 design loses 10% of its vertical lift over a Tiltwing design when operating in helicopter mode because of airflow resistance due to the wings, but that the Tiltrotor design has better short takeoff and landing performance.[46]
The V-22 is equipped with a glass cockpit, which incorporates four Multi-function displays (MFDs) and one shared Central Display Unit (CDU), allowing the pilots to display a variety of images including: digimaps centered or decentered on current position, FLIR imagery, primary flight instruments, navigation (TACAN, VOR, ILS, GPS, INS), and system status. The flight director panel of the Cockpit Management System (CMS) allows for fully-coupled (aka: autopilot) functions which will take the aircraft from forward flight into a 50-foot hover with no pilot interaction other than programming the system.[47] The glass cockpit of the canceled CH-46X was derived from the V-22.[48]
The V-22 is a fly-by-wire aircraft with triple-redundant flight control systems.[49] With the nacelles pointing straight up in conversion mode at 90° the flight computers command the aircraft to fly like a helicopter, with cyclic forces being applied to a conventional swashplate at the rotor hub. With the nacelles in airplane mode (0°) the flaperons, rudder, and elevator fly the aircraft like an airplane. This is a gradual transition and occurs over the rotation range of the nacelles. The lower the nacelles, the greater effect of the airplane-mode control surfaces.[50] The nacelles can rotate past vertical to 97.5° for rearward flight.[51][52]
The Osprey can be armed with one M240 7.62x51mm NATO (.308 in caliber) or M2 .50 in caliber (12.7 mm) machine gun on the loading ramp, that can be fired rearward when the ramp is lowered. A GAU-19 three-barrel .50 in gatling gun mounted below the V-22's nose has also been studied for future upgrade.[31][53] BAE Systems developed a remotely operated turreted weapons system for the V-22,[54] which was installed on half of the first V-22s deployed to Afghanistan in 2009.[38] The 7.62 mm belly gun turret is remotely operated by a gunner inside the aircraft, who acquires targets with a separate pod using color television and forward looking infrared imagery.
U.S. Naval Air Systems Command is working on upgrades to increase the maximum speed from 250 knots (460 km/h; 290 mph) to 270 knots (500 km/h; 310 mph), increase helicopter mode altitude limit from 10,000 feet (3,000 m) to 12,000 feet (3,700 m) or 14,000 feet (4,300 m), and increase lift performance.[55]
Operational history
US Marine Corps
Marine Corps crew training on the Osprey has been conducted by VMMT-204 since March 2000. On 3 June 2005, the Marine Corps helicopter squadron Marine Medium Helicopter 263 (HMM-263), stood down to begin the process of transitioning to the MV-22 Osprey.[56] On 8 December 2005, Lieutenant General Amos, commander of the II MEF, accepted the delivery of the first fleet of MV-22s, delivered to HMM-263. The unit reactivated on 3 March 2006 as the first MV-22 squadron and was redesignated VMM-263. On 31 August 2006, VMM-162 (the former HMM-162) followed suit. On 23 March 2007, HMM-266 became Marine Medium Tiltrotor Squadron 266 (VMM-266) at Marine Corps Air Station New River, North Carolina.[57]
The Osprey has been replacing existing CH-46 Sea Knight squadrons.[58] The MV-22 reached initial operational capability (IOC) with the U.S. Marine Corps on 13 June 2007.[1] On 10 July 2007 an MV-22 Osprey landed aboard the Royal Navy aircraft carrier, HMS Illustrious in the Atlantic Ocean. This marked the first time a V-22 had landed on any non-U.S. vessel.[59]
On 13 April 2007, the U.S. Marine Corps announced that it would be sending ten V-22 aircraft to Iraq, the Osprey's first combat deployment. Marine Corps Commandant, General James Conway, indicated that over 150 Marines would accompany the Osprey set for September deployment to Al-Asad Airfield.[60][61] On 17 September 2007, ten MV-22Bs of VMM-263 left for Iraq aboard the USS Wasp. The decision to use a ship rather than use the Osprey's self-deployment capability was made because of concerns over icing during the North Atlantic portion of the trip, lack of available KC-130s for mid-air refueling, and the availability of the USS Wasp.[62]
The Osprey has provided support in Iraq, racking up some 2,000 flight hours over three months with a mission capable availability rate of 68.1% as of late-January 2008.[63] They are primarily used in Iraq's western Anbar province for routine cargo and troop movements, and also for riskier "aero-scout" missions. General David Petraeus, the top U.S. military commander in Iraq, used one to fly around Iraq on Christmas Day 2007 to visit troops.[64] Then-presidential candidate Barack Obama also flew in Ospreys during his high profile 2008 tour of Iraq.[65]
The only major problem has been obtaining the necessary spare parts to maintain the aircraft.[66] The V-22 had flown 3,000 sorties totaling 5,200 hours in Iraq as of July 2008.[67] USMC leadership expect to deploy MV-22s to Afghanistan in 2009.[66][68] General George J. Trautman, III praised the increased range of the V-22 over the legacy helicopters in Iraq and said that "it turned his battle space from the size of Texas into the size of Rhode Island."[69]
Naval Air Systems Command has devised a temporary fix for sailors to place portable heat shields under Osprey engines to prevent damage to the decks of some of the Navy's smaller amphibious ships, but they determined that a long term solution to the problem would require these decks be redesigned with heat resistant deck coatings, passive thermal barriers and changes in ship structure in order to operate V-22s and F-35Bs.[70]
A Government Accountability Office study reported that by January 2009 the Marines had 12 MV-22s operating in Iraq and they managed to successfully complete all assigned missions. The same report found that the V-22 deployments had mission capable rates averaging 57% to 68% and an overall full mission capable rate of only 6%. It also stated that the aircraft had shown weakness in situational awareness, maintenance, shipboard operations and the ability to transport troops and external cargo.[71] That study also concluded that the "deployments confirmed that the V-22’s enhanced speed and range enable personnel and internal cargo to be transported faster and farther than is possible with the legacy helicopters it is replacing".[71]
The MV-22 saw its first offensive combat mission, Operation Cobra's Anger on 4 December 2009. Ospreys assisted in inserting 1,000 Marines and 150 Afghan troops into the Now Zad Valley of Helmand Province in southern Afghanistan to disrupt communication and supply lines of the Taliban.[38] In January 2010 the MV-22 Osprey is being sent to Haiti as part of Operation Unified Response relief efforts after the earthquake there. This will be the first use the Marine V-22 in a humanitarian mission.[72]
US Air Force
The Air Force's first operational CV-22 Osprey was delivered to the 58th Special Operations Wing (58th SOW) at Kirtland Air Force Base, New Mexico on 20 March 2006. This and subsequent aircraft will become part of the 58th SOW's fleet of aircraft used for training pilots and crew members for special operations use.[73] On 16 November 2006, the Air Force officially accepted the CV-22 in a ceremony conducted at Hurlburt Field, Florida.[74]
The US Air Force's first operational deployment of the Osprey sent four CV-22s to Mali in November 2008 in support of Exercise Flintlock. The CV-22s flew nonstop from Hurlburt Field, Florida with in-flight refueling.[5] AFSOC declared that the 8th Special Operations Squadron reached Initial Operational Capability on 16 March 2009, with six of its planned nine CV-22s operational.[75]
In June 2009, CV-22s of the 8th Special Operations Squadron delivered 43,000 pounds (20,000 kg) of humanitarian supplies to remote villages in Honduras that were not accessible by conventional vehicles.[76] In November 2009, the 8th SO Squadron and its six CV-22s returned from a three-month deployment in Iraq.[77]
The first possible combat loss of an Osprey occurred on 9 April, 2010, as a CV-22 went down near Qalat, Zabul Province, Afghanistan, killing four.[78][79]
Potential operators
In 1999 the V-22 was studied for use in the United Kingdom's Royal Navy,[80] it has been raised several times as a candidate for the role of Maritime Airborne Surveillance and Control (MASC).[81]
Israel had shown interest in the purchase of MV-22s, but no order was placed.[82][83] Flightglobal reported in late 2009 that Israel has decided to wait for the CH-53K instead.[84]
The V-22 Osprey is a candidate for the Norwegian All Weather Search and Rescue Helicopter (NAWSARH) that is planned to replace the Westland Sea King Mk.43B of the Royal Norwegian Air Force in 2015.[85] The other candidates for the NAWSARH contract of 10-12 helicopters are AgustaWestland AW101 Merlin, Eurocopter EC225, NHIndustries NH90 and Sikorsky S-92.[86]
Bell Boeing has made an unsolicited offer of the V-22 for US Army medical evacuation needs.[87] However the Joint Personnel Recovery Agency issued a report that said that a common helicopter design would be needed for both combat recovery and medical evacuation and that the V-22 would not be suitable for recovery missions because of the difficulty of hoist operations and lack of self-defense capabilities.[88]
The US Navy remains a potential user of the V-22, but its role and mission with the Navy remains unclear. The latest proposal is to replace the C-2 Greyhound with the V-22 in the fleet logistics role. The V-22 would have the advantage of being able to land on and support non-carriers with rapid delivery of supplies and people between the ships of a taskforce or to ships on patrol beyond helicopter range.[89] Loren B. Thompson of the Lexington Institute has suggested V-22s for use in combat search and rescue and Marine One VIP transport, which also need replacement aircraft.[90]
Variants
• V-22A
•• Pre-production full-scale development aircraft used for flight testing. These are unofficially considered A-variants after 1993 redesign.[91]
• HV-22
•• The U.S. Navy considered an HV-22 to provide combat search and rescue, delivery and retrieval of special warfare teams along with fleet logistic support transport. However, it chose the MH-60S for this role in 1992.[92]
• SV-22
•• The proposed anti-submarine warfare Navy variant. The Navy studied the SV-22 in the 1980s to replace S-3 and SH-2 aircraft.[93]
• MV-22B
•• Basic U.S. Marine Corps transport; original requirement for 552 (now 360). The Marine Corps is the lead service in the development of the V-22 Osprey. The Marine Corps variant, the MV-22B, is an assault transport for troops, equipment and supplies, capable of operating from ships or from expeditionary airfields ashore. It is replacing the Marine Corps' CH-46E[57] and CH-53D.[94]
• CV-22B
•• Air Force variant for the U.S. Special Operations Command (USSOCOM). It will conduct long-range, special operations missions, and is equipped with extra fuel tanks and terrain-following radar.[95][96]
Operators
•• 8th Special Operations Squadron (8 SOS) at Hurlburt Field, Florida
•• 71st Special Operations Squadron (71 SOS) at Kirtland Air Force Base, New Mexico
•• 20th Special Operations Squadron (20 SOS) at Cannon Air Force Base, New Mexico
•• VMM-161
•• VMM-162
•• VMM-261
•• VMM-263
•• VMM-264
•• VMM-266
•• VMM-365
•• VMMT-204 - Training squadron
•• VMX-22 - Marine Tiltrotor Operational Test and Evaluation Squadron
Notable accidents
Main article: Accidents and incidents involving the V-22 Osprey
From 1991 to 2000 there were four significant crashes, and a total of 30 fatalities, during testing.[32] Since becoming operational in 2007, the V-22 has had one possible combat loss due to an unknown cause, no losses due to accidents, and seven other notable, but minor, incidents.
• On 11 June 1991, a mis-wired flight control system led to two minor injuries when the left nacelle struck the ground while the aircraft was hovering 15 feet (4.6 m) in the air, causing it to bounce and catch fire.[97]
• On 20 July 1992, a leaking gearbox led to a fire in the right nacelle, causing the aircraft to drop into the Potomac River in front of an audience of Congressmen and other government officials at Quantico, killing all seven on board and grounding the aircraft for 11 months.[98]
• On 8 April 2000, a V-22 loaded with Marines to simulate a rescue, attempted to land at Marana Northwest Regional Airport in Arizona, stalled when its right rotor entered vortex ring state, rolled over, crashed, and exploded, killing all 19 on board.[37]
• On 11 December 2000, after a catastrophic hydraulic leak and subsequent software instrument failure, a V-22 fell 1,600 feet (490 m) into a forest in Jacksonville, North Carolina, killing all four aboard. This caused the Marine Corps to ground their fleet of eight V-22s, the second grounding that year.[99][100]
Specifications (MV-22B)
Data from Boeing Integrated Defense Systems,[101] Naval Air Systems Command,[102] US Air Force CV-22 fact sheet,[95] Norton,[103] and Bell[104]
General characteristics
• Crew: Four (pilot, copilot and two flight engineers)
• Capacity: 24 troops (seated), 32 troops (floor loaded) or up to 15,000 lb (6,800 kg) of cargo (dual hook)
• Length: 57 ft 4 in (17.5 m)
• Rotor diameter: 38 ft 0 in (11.6 m)
• Wingspan: 45 ft 10 in (14 m)
• Width with rotors: 84 ft 7 in (25.8 m)
• Height: 22 ft 1 in/6.73 m; overall with nacelles vertical (17 ft 11 in/5.5 m; at top of tailfins)
• Disc area: 2,268 ft² (212 m²)
• Wing area: 301.4 ft² (28 m²)
• Empty weight: 33,140 lb (15,032 kg)
• Loaded weight: 47,500 lb (21,500 kg)
• Max takeoff weight: 60,500 lb (27,400 kg)
• Powerplant: 2× Rolls-Royce Allison T406/AE 1107C-Liberty turboshafts, 6,150 hp (4,590 kW) each
Performance
• Maximum speed: 250 knots (460 km/h, 290 mph) at sea level / 305 kn (565 km/h; 351 mph) at 15,000 ft (4,600 m)[105]
• Cruise speed: 241 knots (277 mph, 446 km/h) at sea level
• Range: 879 nmi (1,011 mi, 1,627 km)
• Combat radius: 370 nmi (426 mi, 685 km)
• Ferry range: 1,940 nmi (with auxiliary internal fuel tanks)
• Service ceiling: 26,000 ft (7,925 m)
• Rate of climb: 2,320 ft/min (11.8 m/s)
• Disc loading: 20.9 lb/ft² at 47,500 lb GW (102.23 kg/m²)
• Power/mass: 0.259 hp/lb (427 W/kg)
Armament
• 1× M240 machine gun on ramp, optional
Notable appearances in media
Main article: Aircraft in fiction#V-22 Osprey
See also
• Elizabeth A. Okoreeh-Baah, USMC - first female to pilot a V-22 Osprey
Related development
Comparable aircraft
Related lists
• List of military aircraft of the United States
References
Bibliography
• Markman, Steve and Bill Holder. "Bell/Boeing V-22 Osprey Tilt-Engine VTOL Transport (U.S.A.)". Straight Up: A History of Vertical Flight. Schiffer Publishing, 2000. ISBN 0-7643-1204-9.
• Norton, Bill. Bell Boeing V-22 Osprey, Tiltrotor Tactical Transport. Midland Publishing, 2004. ISBN 1-85780-165-2.
External links
Wikimedia Commons has media related to: V-22 Osprey
• V-22 Osprey web, and www.history.navy.mil/planes/v-22.html
• CV-22 fact sheet on USAF site
• www.globalsecurity.org/military/systems/aircraft/v-22.htm
• www.airforce-technology.com/projects/osprey/
• "Flight of the Osprey", US Navy video of V-22 operations
The castle has been the seat of the Percy family since Norman times. By 1138 the original motte and bailey castle, with wooden buildings, was replaced with stone buildings and walls. In 1309 the keep and defences were made even stronger by Henry de Percy. The castle then stayed unchanged for 400 years. By the 18th century it had fallen into ruins. The keep however was then turned into a gothic style mansion by Robert Adam. In the 19th century the Duke of Northumberland carried out more restoration of the castle.
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ALNWICK CASTLE, THE CASTLE, STABLE COURT AND COVERED RIDING SCHOOL INCLUDING WEST WALL OF RIDING SCHOOL
Heritage Category: Listed Building
Grade: I
List Entry Number: 1371308
National Grid Reference: NU 18685 13574
Details
This list entry was subject to a Minor Amendment on 05/10/2011
NU 1813 NE 2/1 NU 1813 SE 1/1 20.2.52. 5330
Alnwick Castle The Castle, Stable Court and Covered Riding School including West Wall of Riding School
GV I
Alnwick Castle has work of every period on the line of the original motte and bailey plan. By 1138 a strong stone built border castle with a shell keep in place of the motte, formed the nucleus of the present castle with 2 baileys enclosing about 7 acres. The curtain walls and their square towers rest on early foundations and the inner gatehouse has round-headed arches with heavy chevron decoration. The Castle was greatly fortified after its purchase by Henry de Percy 1309 - the Barbican and Gatehouse, the semi-circular towers of the shell keep, the octagonal towers of the inner gateway and the strong towers of the curtain wall date from the early to mid C14. Ruinous by the C18, the 1st Duke had it rehabilitated and extended by James Prince and Robert Adam, the latter being mainly concerned with the interior decoration, very little of which remains except for fireplaces in the Housekeeper's and the Steward's Rooms and for inside the present Estates Office range. Capability Brown landscaped the grounds, filling in the former moat (formed by Bow Burn). The 4th Duke employed Anthony Salvin 1854-65 at the cost of £1/4 million to remove Adam's fanciful Gothic decoration, to restore a serious Gothic air to the exterior and to redesign the state rooms in an imposing grand Italian manner. The Castle is approached from Bailliff gate through the crenellated Barbican and Gatehouse (early C14): lion rampant (replica) over archway, projecting square side towers with corbelled upper parts, fortified passage over dry moat to vaulted gateway flanked by polygonal towers. Stone figures on crenellations here, on Aveners Tower, on Record Tower and on Inner Gateway were carved circa 1750-70 by Johnson of Stamfordham and probably reflect an earlier similar arrangement. In the Outer Bailey to the, north are the West Garrett (partly Norman), the Abbott's Tower (circa 1350) with a rib vaulted basement, and the Falconer's Tower (1856). To the south are the Aveners Tower [C18], the Clock Tower leading into the Stable Yard, the C18 office block, the Auditor's Tower (early Clk) and the Middle Gateway (circa 1309-15) leading to the Middle Bailey. The most prominent feature of the Castle on the west side is the very large Prudhoe Tower by Salvin and the polygonal apse of the chapel near to it. In the Middle Bailey, to the south are the Warders Tower (1856) with the lion gateway leading by a bridge to the grand stairs into the walled garden, the East Garrett and the Record Tower (C14, rebuilt 1885). In the curtain wall to the north are 2 blocked windows probably from an early C17 building now destroyed and the 'Bloody Gap', a piece of later walling possibly replacing a lost truer; next a small C14 watch tower (Hotspur's Seat); next the Constable's Tower, early C14 and unaltered with a gabled staircase turret; close by is the Postern Tower, early C14, also unaltered.'To the north-west of the Postern Tower is a large terrace made in the C18, rebuilt 1864-65, with some old cannon on it. The Keep is entered from the Octagon Towers (circa 1350) which have 13 heraldic shields below the parapet, besides the agotrop3ic figures, and a vaulted passage expanded from the Norman gateway (fragments of chevron on former outer arch are visible inside). The present arrangement of the inner ward is largely Salvin's work with a covered entrance with a projecting storey and lamp-bracket at the rear of the Prudhoe Tower and a corbelled corridor at 1st floor level on the east. Mediaeval draw well on the east wall, next to the original doorway to the keep, now a recess The keep, like the curtain walls, is largely mediaeval except for some C18 work on the interior on the west and for the Prudhoe Tower and the Chapel. The interior contrasts with the rugged mediaeval exterior with its sumptuous Renaissance decoration, largely by Italians - Montiroli, Nucci, Strazza, Mantavani and inspired from Italian sources. The chapel with its family gallery at the east end has 4 short rib vaulted bays and a shallow 3-light apse; side walls have mosaics, covered now with tapestry. The grand staircase With its groin vaulted ceiling leads to the Guard Chamber from which an ante-room leads west into the Library (in the Prudhoe Tower) and east into the Music Room (fireplace with Dacian captives by Nucci). Further on are the Red Drawing Room (caryatid fireplace by Nucci) and the Dining Room (ceiling design copied from St Lorenzo f.l.m. in Rome and fireplace with bacchante by Strazza and faun by Nucci). South of the Middle Gateway are Salvin's impressive Kitchen quarters where the oven was designed to burn a ton of coal per day. West of the Stable Courtyard, with C19 Guest Hall at the south end, is the C19 covered riding school, with stable to north of it, and with its west wall forming the east side of Narrowgate. The corner with Bailliffgate has an obtuse angled tower of 2 storeys, with a depressed ogee headed doorway from the street, and merlons.
Listing NGR: NU1863413479
historicengland.org.uk/listing/the-list/list-entry/137130...
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ALNWICK CASTLE
Heritage Category: Park and Garden
Grade: I
List Entry Number: 1001041
National Grid Reference: NU1739315366, NU2254414560
Details
Extensive landscape parks and pleasure grounds developed from a series of medieval deer parks, around Alnwick Castle, the seat of the Percy family since the C14.
Between 1750 and 1786, a picturesque landscape park was developed for Hugh, first Duke of Northumberland, involving work by James Paine, Robert Adam, and the supervision of work by Lancelot Brown (1716-83) and his foremen Cornelius Griffin, Robson, and Biesley in the 1760-80s, working alongside James and Thomas Call, the Duke's gardeners. During the C19 each successive Duke contributed and elaborated on the expansive, planned estate landscape, within which the landscape park was extended. This was accompanied by extensive C19 garden works, including a walled, formal flower garden designed in the early C19 by John Hay (1758-1836), and remodelled mid C19 by William Andrews Nesfield (1793-1881).
NOTE This entry is a summary. Because of the complexity of this site, the standard Register entry format would convey neither an adequate description nor a satisfactory account of the development of the landscape. The user is advised to consult the references given below for more detailed accounts. Many Listed Buildings exist within the site, not all of which have been here referred to. Descriptions of these are to be found in the List of Buildings of Special Architectural or Historic Interest produced by the Department of Culture, Media and Sport.
HISTORIC DEVELOPMENT
In the C13, Hulne Park, West Park, and Cawledge were imparked within the Forest of Alnwick. Hulne Park lay to the north-west of Alnwick Castle and Cawledge to the south and south-east. By the late Middle Ages, Hulne Park extended to 4000 acres (c 1620ha) enclosed by some 13 miles (c 21km) of wall. It was stocked with some 1000 fallow deer and a tower at Hulne Priory served as a hunting lodge. The parks formed the basis of Alnwick Park, landscaped by Sir Hugh Smithson (1714-86) who in 1750 became Earl of Northumberland, inheriting his father-in-law's northern estates. Prior to this, from 1748 he and his wife, Elizabeth Seymour (1716-76), had lived at Stanwick, Yorkshire (qv) and at Syon Park, London (qv), where they had already established a reputation for gardening, attested by Philip Miller's dedication, in 1751, of his Gardener's Dictionary to the Earl.
Together they embarked on an ambitious scheme to restore the Castle, develop the grounds and estate, and restore the Percy family traditions and identity at Alnwick. Those employed at Alnwick were also involved elsewhere on the Northumberland estates: James Paine, architect at Syon House, Daniel Garrett, architect at Northumberland House, the Strand (1750-3), Robert Adam, architect at Syon (1762-9), Lancelot Brown, landscape architect at Syon Park (1754-72).
In 1751, Thomas Call (1717-82), who had been the Earl's gardener at Stanwick, prepared a scheme for the parklands and pleasure grounds, including a plan for Brizlee Hill (the south part of Hulne Park). Call and his relation James, working at Alnwick by 1756, were responsible for the development of Hulne Park over twenty years. The date and extent of Lancelot Brown's involvement at Alnwick is uncertain, although his foremen Griffin, Robson, and Biesley worked at Alnwick with teams of men between 1771and 1781 and records shown that they also worked alongside Call and his men (in 1773 for example, Call had a team of sixty men and Biesley one of seventy-eight).
Hulne Park was developed as a picturesque pleasure ground with extensive rides, follies, and the enhancement of natural features. A characteristic of the Duke's scheme was his recognition of antiquarian sites within the landscape, which were embellished. Thus in 1755, Hulne Priory was purchased to become the focal point of Hulne Park. A garden was made within the cloister walls and, from c 1763, the priory became the gamekeeper's residence, with a menagerie of gold and silver pheasants. Statues of friars cut by the mason Matthew Mills were set in the landscape. In 1774, a medieval commemorative cross to Malcolm Canmore (listed grade II), situated at the northern entrance to the North Demesne, was restored.
Following the Duchess' death in 1776, the Duke decorated all her favourite locations with buildings, some being ideas she had noted in her memoranda. Work also included other notes and ideas the Duchess had had, including the ruin at Ratcheugh Crag and some ninety-eight drives and incidents.
Plans for the parklands at the North Demesne, Denwick, and Ratcheugh Crags were developed in the late 1760s, although in the case of the North Demesne some parkland planting had been undertaken by 1760, and the major work undertaken in the early 1770s is that attributed to Brown, mainly on stylistic grounds.
During the C19, under the second Duke (1742-1817) the parks were extended, this including the purchase of Alnwick Abbey and part of its estate. The complex of drives was also extended and this was accompanied by extensive plantations, including the large Bunker Hill plantation central to the north area of Hulne Park, named to commemorate the Duke's action in 1775 in the War of American Independence. Most significantly, between 1806 and 1811, building centred on construction of a perimeter wall, defining the boundary of Hulne Park, and lodges and gateways at entrances to the parks. The carriage drives were extended, necessitating the construction of bridges over the River Aln. These schemes were implemented by estate workers, local masons, and David Stephenson, the Duke's architect.
As the Castle had no formal flower gardens, John Hay was commissioned between 1808 and 1812 to design pleasure gardens to the south-east of the Castle, linking it with a new walled garden at Barneyside, furnished with a range of hothouses, glasshouses, and pine pits. These were extended in the 1860s when Anthony Salvin, employed in the restoration of the Castle, built a gateway between the inner bailey and the pleasure gardens. Nesfield designed a scheme for the walled gardens to be developed as an ornamental flower and fruit garden, with a large central pool, conservatory, and a series of broad terraces and parterres. The Alnwick scheme can be compared to Nesfield's in the precincts of Arundel Castle, West Sussex (qv), in 1845.
Alnwick Castle, parks and estate remain (2000) in private ownership, the latest significant developments being the replanting and restoration of the North Demesne (1990s) and plans to completely remodel the walled garden.
SUMMARY DESCRIPTION
Alnwick Castle parks cover a tract of countryside encircling Alnwick town on its west, north, north-east, and south sides. The land is a mixture of contrasting landscape types, with high heather moorland and the rough crags of the Northumbrian Sandstone Hills sweeping down to the improved pasture lands along the wooded Aln valley. The parks exploit the boundaries of these distinctive landforms where the rugged moorland gives way to the pastoral, rolling landscape of the Aln, on its route to the sea. In the west parklands the river is confined between hills, and in places has incised deep, narrow valleys while in the east the landscape is more open.
The registered area of 1300ha is bounded on its north-east side by the Hulne Park wall, west of the Bewick to Alnwick Road (B6346). The west side of the area here registered follows field boundaries to the west of Shipley Burn, starting at Shipley Bridge, and then turns south-west at a point c 1km south of the bridge. It then runs for south-west for c 2.3km, to the west of Hulne Park, before crossing the River Aln and running parallel to Moorlaw Dean for c 1.2km, on the west side of the burn. The southern area is defined by Hulne Park wall running around the south point of Brizlee Wood then in a line due east, south of Cloudy Crags drive, to cross the Stocking Burn and reach Forest Lodge. The boundary then defines the north-western extent of Alnwick town and, crossing the Canongate Bridge, the southernmost extent of the Dairy Grounds.
To the east of the Castle the registered area takes in the entire North Demesne bounded on its north by Long Plantation, a perimeter belt which lies on the south side of Smiley Lane and then extends eastwards to meet the junction of the B1340 and A1 trunk road. The A1 has effectively cut through the North Demesne from north to south and, although physically divorcing the two areas, they are still visually conjoined. Defined on its north side within the hamlet of Denwick by tree belts, the park extends eastwards for 1km before cutting across southwards to meet the River Aln at Lough House. This latter stretch is bounded by a perimeter belt. The south boundary of the North Demesne follows the river in part, before meeting the Alnwick to Denwick road (B1340). To the south, the Castle gardens are delimited from the town by property boundaries along Bondgate. An outlying area of designed landscape at Ratcheugh is also included.
A complex series of drives is laid throughout the parks, particularly in Hulne Park. A series of thirty standing stones stand at the beginning of the drives or where they converge. These are inscribed with the names of the drives and act as signposts.
Alnwick Castle (1134 onwards, c 1750-68 by James Paine and Robert Adam, 1854-6 by Anthony Salvin, listed grade I) lies on the high ground on the south side of the Aln valley, commanding views to the north, east, and west. To the south is Alnwick town but the landscape is designed so that the town is not in view of the Castle. The principal views from the Castle lie over the North Demesne.
The North Demesne originally included Denwick Park (they have now been divided by the A1 road), and together these 265ha form the core parkland designed by Brown. Perimeter tree belts define the park, and clumps and scatters of specimen trees ornament the ground plan. The Aln has been dammed to give the appearance of an extensive, natural serpentine lake, with bridges as focal points: the Lion Bridge (John Adam 1773, listed grade I) and Denwick Bridge (1766, probably also by Adam, listed grade I). A programme of replanting and restoration of the North Demesne is under way (late 1990s).
The medieval deer park of Hulne extended to the north of the Shipley Road (outside the area here registered). Hulne Park is now 1020ha and is in agricultural and forestry use. The principal entrance from Alnwick town is Forest Lodge, the only extant part of Alnwick Abbey. Hulne Park is completely enclosed by an early C19 perimeter wall, c 3m high with shaped stone coping and buttresses every 20m. Nearly 5km of wall lies alongside roads, 5km across fields, and 5km defines perimeter woodland and moorland from the enclosed park.
The park design consists of a series of oval-shaped enclosures, defined by tree belts vital for shelter. The highest point is in the west area of the park, from where there are long-distance views east to the sea. The River Aln winds its way through the park via a series of contrasting steep valleys and flatter lands. The valleys are emphasised by planting on the upper slopes, while the lower areas are encircled with designed plantations to emphasise the river's meanders and ox-bow lakes.
Picturesque incidents survive at Nine Year Aud Hole, where the statue of a hermit (late C18, listed grade II) stands at the entrance to a natural cave along Cave Drive, and at Long Stone, a monolith standing high on the west side of Brizlee Hill, with panoramic views over Hulne Park to the north-west. The picturesque highlight is Hulne Priory (original medieval buildings, C18 alterations and enhancements, all listed grade I), which includes a summerhouse designed by Robert Adam (1778-80, listed grade I) and statues of praying friars erected in the Chapter House (late C18). The Priory's picturesque qualities are well appreciated from Brizlee Tower (Robert Adam, listed grade I), built in 1781 to commemorate the creation of the Alnwick parks by the first Duke and Duchess, a Latin inscription stating:
Circumspice! Ego omnia ista sum dimensus; Mei sunt ordines, Mea descriptio Multae etiam istarum arborum Mea manu sunt satae. [Look about you. I have measured all these things; they are my orders; it is my planning; many of these trees have been planted by my own hand.]
Brizlee is sited on a high point which can be seen in views north-west from the Castle, mirroring views north-east to the 'Observatory' on Ratcheugh Crag, a sham ruined castle sited as an eyecatcher on high ground and built by John Bell of Durham in 1784 (plans to further elaborate it were designed by Robert Adam).
Another principal feature of Hulne Park is a series of regular, walled enclosures (the walls set in ditches with banks cast up inside the compounds) which line Farm Drive, the central road through the park, north-westwards from Moor Lodge. This functioned as the third Duke's menagerie, and is still pasture.
The 15ha Dairy Ground links Hulne Park and the North Demesne. It principally consists of the Aln valley north-west of the Castle, stretching between Canongate Bridge and Lion Bridge, laid out as pleasure gardens. Barbara's Bank and the Dark Walk are plantations laid out with walks on the steep slopes with a Curling Pond to the north of the Aln.
The walled garden of 3ha lies to the south-east of the Castle, reached by the remains of C19 pleasure gardens laid out on the slopes above Barneyside. After the Second World War use of the glasshouses ceased, and until recently (late 1990s) the Estate Forestry Department used it. The earthwork terraces and remnants of specimen planting of Nesfield's scheme survive.
REFERENCES
Note: There is a wealth of material about this site. The key references are cited below.
The Garden, 5 (1874), pp 100-1, 188; 20 (1881), pp 155-6 Gardeners' Chronicle, ii (1880), pp 523-4, 587; ii (1902), pp 273-4 J Horticulture and Cottage Gardener 15, (1887), pp 296-8 P Finch, History of Burley on the Hill (1901), p 330 Country Life, 65 (22 June 1929), pp 890-8; 66 (6 July 1929), pp 16-22; 174 (4 August 1983), p 275 D Stroud, Capability Brown (1975), pp 103-4 Garden History 9, (1981), pp 174-7 Capability Brown and the Northern Landscape, (Tyne & Wear County Council Museums 1983), pp 19, 22-3, 27, 42 Restoration Management Plan, Alnwick Castle, (Land Use Consultants 1996) C Shrimpton, Alnwick Castle, guidebook, (1999)
Description written: August 2000 Resgister Inspector: KC Edited: June 2003
historicengland.org.uk/listing/the-list/list-entry/100104...
See also:-
+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
The Vought F4U Corsair was an American fighter aircraft that saw service primarily in World War II and the Korean War. Demand for the aircraft soon overwhelmed Vought's manufacturing capability, resulting in production by Goodyear and Brewster: Goodyear-built Corsairs were designated FG and Brewster-built aircraft F3A. From the first prototype delivery to the U.S. Navy in 1940, to final delivery in 1953 to the French, 12,571 F4U Corsairs were manufactured, in 16 separate models, in the longest production run of any piston-engined fighter in U.S. history (1942–53).
The Corsair was designed as a carrier-based aircraft but its difficult carrier landing performance rendered it unsuitable for Navy use until the carrier landing issues were overcome by the Royal Navy Fleet Air Arm. The Corsair thus came to and retained prominence in its area of greatest deployment: land based use by the U.S. Marines.
The Corsair served only to a lesser degree in the U.S. Navy, the role of the dominant U.S. carrier based fighter in the second part of the war was thus filled by the Grumman F6F Hellcat, powered by the same Double Wasp engine first flown on the Corsair's first prototype in 1940. In addition to its use by the U.S. and British, the Corsair was also used by the Royal New Zealand Air Force, the French Navy Aéronavale and other, smaller, air forces until the 1960s.
A little known fact is that, under the Lend-Lease act, a small number of F4U-1A/D "Corsair" fighter planes was also delivered to the Soviet Union. The Lend-Lease policy, formally titled "An Act to Promote the Defense of the United States", was a program under which the United States supplied Free France, the United Kingdom, the Republic of China, and later the Soviet Union and other Allied nations with food, oil, and materiel between 1941 and August 1945. This included warships and warplanes, along with other weaponry. In general the aid was free, although some hardware (such as ships) were returned after the war. In return, the U.S. was given leases on army and naval bases in Allied territory during the war. Canada operated a similar smaller program under a different name.
The F4U, being a high performance fighter at its time, was included into support deliveries only from early 1945 on, and the machines earmarked for foreign operations were mostly 2nd hand aircraft that had served with the USMC in the Pacific TO. These planes were directly delivered from US units to various IAPs (IAP = Istrebitelnyi Aviatsionnyj Polk = Fighter Aviation Regiment) on the Pacific coast and formally part of the Soviet Union's Pacific Fleet air arm. The machines, overhauled in field workshops, became operational in Spring 1945 and were operated from land bases only. The core of the Soviet Corsair operations took place primarily in the Sea of Okhotsk region, mostly in the form of bomber escorts and CAS missions for advancing army troops.
Upon delivery, the Soviet Corsairs generally wore their former standard US Navy three color camouflage scheme. Only the national markings and tactical codes were quickly oversprayed with whatever paint was at hand, and prominent Red Star markings were applied in standard positions. Later, during routine maintenance overhauls, some machines received individual paint schemes. Several machines for the ground attack role were also retrofitted with Soviet bomb shackles and launch rails for indigenous unguided missiles like the RS-82 or RS-132.
One notable operation in which Soviet F4U took part in was the liberation of southern Sakhalin in August-September 1945. During the war against Japan, the Pacific Ocean Fleet successfully landed a number of operational and tactical landing bodies, mostly in close cooperation with the Soviet Army units. After repudiating the Soviet–Japanese Neutrality Pact, the Soviet Union invaded southern Sakhalin, the Soviet attack started on August 11, 1945, a few days before the surrender of Japan. The Soviet 56th Rifle Corps, part of the 16th Army, consisting of the 79th Rifle Division, the 2nd Rifle Brigade, the 5th Rifle Brigade and the 214 Armored Brigade, attacked the Japanese 88th Infantry Division.
Although the Soviet Red Army outnumbered the Japanese by three to one, they advanced only slowly due to strong Japanese resistance. It was not until the 113th Rifle Brigade and the 365th Independent Naval Infantry Rifle Battalion from Sovetskaya Gavan landed on Tōro, a seashore village of western Karafuto on August 16 that the Soviets broke the Japanese defense line. Japanese resistance grew weaker after this landing. Actual fighting continued until August 21. From August 22 to August 23, most remaining Japanese units agreed to a ceasefire. The Soviets completed the conquest of Karafuto on August 25, 1945 by occupying the capital of Toyohara.
Further operations with Soviet F4U involvement were the liberation of the Kuril Islands and of several ports along the eastern coast of Korea, eventually reaching Port-Artur (Lüshunkou) at the coast of the Yellow Sea. Roundabout 150 F4U-1A/Ds were operated by the Soviet Pacific Fleet's air arm, and after the end of hostilities almost all of the war-worn aircraft were scrapped.
General characteristics:
Crew: 1 pilot
Length: 33 ft 4 in (10.1 m)
Wingspan: 41 ft 0 in (12.5 m)
Height: 16 ft 1 in (4.90 m)
Wing area: 314 ft2 (29.17 m²)
Empty weight: 8,982 lb (4,073 kg)
Loaded weight: 11,432 lb (5,185 kg)
Powerplant:
1× Pratt & Whitney R-2800-8 radial engine, 2,000 hp (1,491 kW)
Performance:
Maximum speed: 417 mph (362 kn/671 km/h)
Range: 1,015 mi (882 nmi/1,633 km)
Service ceiling: 36,900 ft (11,247 m)
Rate of climb: 2,890 ft/min (15.2 m/s)
Armament:
6× 0.50 in (12.7 mm) M2 Browning machine guns with 400 RPG
Up to 2,000 lb (910 kg) of external ordnance, incl. unguided missiles and bombs of up to 1,000 lb (454 kg) caliber;
The kit and its assembly:
This whif is actually a tribute build. It's based upon a profile drawing, posted in 2010 by Czech fellow modeler Wenzel a.k.a. PantherG at whatifmodelers.com. I found the idea of a Lend-Lease Corsair charming, esp. the overpainted markings on a standard USN scheme.
I kept the concept in the back of my mind, and the "Soviet Group Build" at whatifmodelers.com in early 2017 was a good motivation to finally turn the idea into hardware.
The kit is Academy's F4U-1D, IMHO a pretty good rendition of the early Corsair, even though with some fishy details like the exhausts. Anyway, the kit was mostly built OOB with just some minor modifications. The only true whiffy addition are the RS-82 missiles and their respective launch rails, resin aftermarket parts from AML Models, and the modified bomb on the ventral hardpoint which is to look more Soviet.
Painting and markings:
Nothing fancy, intentionally, and basically close to the inspiring profile. The Corsair was painted in standard USN colors of Dark Sea Blue ANA 607, Intermediate Blue ANA 608 and Insignia White ANA 601 (= FS 35042, 35164 and 37875). I used Modelmaster 1718, Humbrol 144 and 147, respectively, the latter being a very light grey (FS 36495), leaving room for post-shading with pure white. The places, where formerly USN markings had been, were painted with typical Russian tones: Green (Humbrol 114) on the upper surfaces and flanks, and Blue under the wings (Humbrol 115).
The model was thoroughly weathered, including some panels in slightly different tones, and received a black ink wash, dry-brushed panel post-shading and some aluminum stains on the leading edges and around the cockpit for simulated chipped paint.
The Soviet markings were puzzled together from the spares box and several aftermarket sheets, including big Red Stars from a P-47D in Soviet service and several Lend Lease P-40Ns, including a specimen operated by the Northern Fleet which donated the nice anchor symbol and the patriotic mural.
After a final dry brushing treatment with shades of grey, some oil stains (with Tamiya’s Smoke) and grinded graphite around the exhausts, machine guns and the wing undersides around the RS-82 launch rails, the kit was sealed with matt acrylic varnish.
A simple whif, but the USN Corsair with Red Stars looks interesting and strangely plausible when you take other Allied aircraft under the Lend Lease program into account – a decent initial entry for the group build. The overpainted former US markings do not stand out as much as I expected, but this just adds to the subtle overall impression, IMHO.
With greetings to Wenzel and his creative input – some good ideas just take time to enter the hardware stage! :D
+++ DISCLAIMER +++
Nothing you see here is real, even though the model, the conversion or the presented background story might be based on historical facts. BEWARE!
Some background:
After the country's independence from the United Kingdom, after its departure from the European Union in 2017, the young Republic of Scotland Air Corps (locally known as Poblachd na h-Alba Adhair an Airm) started a major procurement program to take over most basic duties the Royal Air Force formerly had taken over in Northern Britain. This procurement was preceded by a White Paper published by the Scottish National Party (SNP) in 2013, which had stated that an independent Scotland would have an air force equipped with up to 16 air defense aircraft, six tactical transports, utility rotorcraft and maritime patrol aircraft, and be capable of “contributing excellent conventional capabilities” to NATO. According to the document, “Key elements of air forces in place at independence, equipped initially from a negotiated share of current UK assets, will secure core tasks, principally the ability to police Scotland’s airspace, within NATO.” An in-country air command and control capability would be established within five years of a decision in favor of independence, it continues, with staff also to be “embedded within NATO structures”.
Outlining its ambition to establish an air force with an eventual 2,000 uniformed personnel and 300 reservists, the SNP stated the organization would initially be equipped with “a minimum of 12 interceptors in the Eurofighter/Typhoon class, based at Lossiemouth, a tactical air transport squadron, including around six Lockheed Martin C-130J Hercules, and a helicopter squadron”. The latter would not only have to take over transport duties for the army, there was also a dire need to quickly replace the former Royal Air Force’s Search and Rescue (SAR) capabilities and duties in the North with domestic resources, after this role was handed over to civilian contractor Bristow Helicopters and the RAF’s SAR units had been disbanded.
This led to the procurement of six AS365 Dauphin helicopters as an initial measure to keep up basic SAR capabilities, with the prospects of procuring more to become independent from the Bristow Helicopters contract. These aircraft were similar to the Eurocopter SA 366 MH-65 “Dolphin” for the United States Coast Guard but differed in many ways from them and also from any other navalized SA365 variant.
For the RoScAC’s SAR squadron, the SA 365 was taken as a starting point, but the helicopter was heavily modified and locally re-christened “Leumadair” (= Dolphin).
The most obvious new feature of the unique Scottish rescue variant was a fixed landing gear with the main wheels on short “stub wings” for a wider stance, stabilizing the helicopter during shipboard landings and in case of an emergency water landing - the helicopter was not able to perform water landings, even though inflatable emergency landing floats were typically fitted. Another obvious difference to other military Dauphin versions was the thimble radome on the nose for an RDR-1600 search and weather radar which is capable of detecting small targets at sea as far as 25 nautical miles away. This layout was chosen to provide the pilots with a better field of view directrly ahead of the helicopter. Additionally, an electro-optical sensor turret with an integrated FLIR sensor was mounted in a fully rotatable turret under the nose, giving the helicopter full all-weather capabilities. Less obvious were a digital glass cockpit and a computerized flight management system, which integrated state-of-the-art communications and navigation equipment. This system provided automatic flight control, and at the pilot's direction, the system would bring the aircraft to a stable hover 50 feet (15 m) above a selected object, an important safety feature in darkness or inclement weather. Selected search patterns could be flown automatically, freeing the pilot and copilot to concentrate on sighting & searching the object.
To improve performance and safety margin, more powerful Turbomeca Arriel 2C2-CG engines were used. Seventy-five percent of the structure—including rotor head, rotor blades and fuselage—consisted of corrosion-resistant composite materials. The rotor blades themselves were new, too, with BERP “paddles”at their tips, a new aerofoil and increased blade twist for increased lifting-capability and maximum speed, to compensate for the fixed landing gear and other external equipment that increased drag. To prevent leading edge erosion the blade used a rubber-based tape rather than the polyurethane used on earlier helicopters.
The “Leumadair HR.1”, so its official designation, became operational in mid-2019. Despite being owned by the government, the helicopters received civil registrations (SC-LEA - -LEF) and were dispersed along the Scottish coastline. They normally carried a crew of four: Pilot, Copilot, Flight Mechanic and Rescue Swimmer, even though regular flight patrols were only excuted with a crew of three. The Leumadair HR.1 was used by the RoScAC primarily for search and rescue missions, but also for homeland security patrols, cargo, drug interdiction, ice breaking, and pollution control. While the helicopters operated unarmed, they could be outfitted with manually operated light or medium machine guns in their doors.
However, the small fleet of only six helicopters was far from being enough to cover the Scottish coast and the many islands up north, so that the government prolonged the contract with Bristow Helicopters in late 2019 for two more years, and the procurement of further Leumadair HR.1 helicopters was decided in early 2020. Twelve more helicopters were ordered en suite and were expected to arrive in late 2021.
General characteristics:
Crew: 2 pilots and 2 crew
Length: 12,06 m (39 ft 2 1/2 in)
Height: 4 m (13 ft 1 in)
Main rotor diameter: 12,10 m (39 ft 7 1/2 in)
Main rotor area: 38.54 m² (414.8 sq ft)
Empty weight: 3,128 kg (6,896 lb)
Max takeoff weight: 4,300 kg (9,480 lb)
Powerplant:
2× Turbomeca Arriel 2C2-CG turboshaft engines, 636 kW (853 hp) each
Performance:
Maximum speed: 330 km/h (210 mph, 180 kn)
Cruise speed: 240 km/h (150 mph, 130 kn)
Range: 658 km (409 mi, 355 nmi)
Service ceiling: 5,486 m (17,999 ft)
Armament:
None installed, but provisions for a 7.62 mm M240 machine gun or a Barrett M107 0.50 in (12.7
mm) caliber precision rifle in each side door
The kit and its assembly:
Another chapter in my fictional alternative reality in which Scotland became an independent Republic and separated from the UK in 2017. Beyond basic aircraft for the RoScAC’s aerial defense duties I felt that maritime rescue would be another vital task for the nascent air force – and the situation that Great Britain had outsourced the SAR job to a private company called for a new solution for the independent Scotland. This led to the consideration of a relatively cheap maritime helicopter, and my choice fell on the SA365 ‘Daupin’, which has been adapted to such duties in various variants.
As a starting point there’s the Matchbox SA365 kit from 1983, which is a typical offer from the company: a solid kit, with mixed weak spots and nice details (e. g. the cockpit with a decent dashboard and steering columns/pedals for the crew). Revell has re-boxed this kit in 2002 as an USCG HH-65A ‘Dolphin’, but it’s technically only a painting option and the kit lacks any optional parts to actually build this type of helicopter in an authentic fashion - there are some subtle differences, and creating a convincing HH-65 from it would take a LOT of effort. Actually, it's a real scam from Revell to market the Matchbox Dauphin as a HH-65!
However, it was my starting basis, and for a modernized/navalized/military version of the SA365 I made some changes. For instance, I gave the helicopter a fixed landing gear, with main wheels stub wings taken from a Pavla resin upgrade/conversion set for a Lynx HAS.2, which also comes with better wheels than the Matchbox kit. The Dauphin’s landing gear wells were filled with 2C putty and in the same process took the stub wings. The front landing gear well was filled with putty, too, and a adapter to hold the front twin wheel strut was embedded. Lots of lead were hidden under the cockpit floor to ensure that this model would not becaome a tail sitter.
A thimble radome was integrated into the nose with some PSR – I opted for this layout because the fixed landing gear would block 360° radar coverage under the fuselage, and there’s not too much ground clearance or space above then cabin for a radome. Putting it on top of the rotor would have been the only other option, but I found this rather awkward. As a side benefit, the new nose changes the helicopter’s silhouette well and adds to a purposeful look.
The rotor blades were replaced with resin BERP blades, taken from another Pavla Lynx conversion set (for the Hobby Boss kit). Because their attachment points were very different from the Matchbox Dauphin rotor’s construction, I had to improvise a little. A rather subtle change, but the result looks very plausible and works well. Other external extras are two inflatable floating devices along the lower fuselage from a Mistercraft ASW AB 212 (UH-1) kit, the winch at port side was scratched with a piece from the aforementioned BK 117 and styrene bits. Some blade antennae were added and a sensor turret was scratched and placed in front of the front wheels. Additional air scoops for the gearbox were added, too. Inside, I added two (Matchbox) pilot figures to the cockpit, plus a third seat for a medic/observer, a storage/equipment box and a stretcher from a Revell BK 117 rescue helicopter kit. This kit also donated some small details like the rear-view mirror for the pilot and the wire-cutters - not a typical detail for a helicopter operating over the open sea, but you never know...
The only other adition is a technical one: I integrated a vertical styrene pipe behind the cabin as a display holder adapter for the traditional hoto shooting's in-flight scenes.
Painting and markings:
It took some time to settle upon a design. I wanted something bright – initially I thought about Scottish colors (white and blue), but that was not garish enough, even with some dayglo additions. The typical all-yellow RAF SAR livery was also ruled out. In the end I decided to apply a more or less uniform livery in a very bright red: Humbrol 238, which is, probably due to trademark issues, marketed as “Arrow Red (= Red Arrows)” and effectively an almost fluorescent pinkish orange-red! Only the black anti-glare panel in front of the windscreen, the radome and the white interior of the fenestron tail rotor were painted, too, the rest was created with white decal stripes and evolved gradually. Things started with a white 2mm cheatline, then came the horizontal stripes on the tail, and taking this "theme" further I added something similar to the flanks as a high contrast base for the national markings. These were improvised, too, with a 6mm blue disc and single 1.5 mm bars to create a Scottish flag. The stancils were taken from the OOB decal sheet. The interior became medium grey, the crew received bright orange jumpsuits and white "bone domes".
No black ink washing or post-panel-shading was done, since the Dauphin has almost no surface details to emphasize, and I wanted a new and clean look. Besides, with wll the white trim, there was already a lot going on on the hull, so that I kept things "as they were". Finally, the model was sealed with a coat of semi-gloss acrylic varnish for a light shine, except for the rotor blades and the anti-glare panel, which became matt.
Quite a tricky project. While the Matchbox Dauphin is not a complex kit you need patience and have to stick to the assembly order to put the hull together. PSR is needed, esp. around the engine section and for the underside. On the other side, despite being a simple model, you get a nice Dauphin from the kit - but NOT a HH-65, sorry. My fictional conversion is certainly not better, but the bright result with its modifications looks good and quite convincing, though.
The auto start and stop feature combined with the Kenworth Idle Management System for the Kenworth T680 76-inch sleeper enables truck operators to more effectively manage climate control and other hotel loads during truck downtime. The battery-based APU system for air conditioning is linked directly into the T680 ducting system. An optional fuel-fired heater provides full engine-off heating capability. The integrated system extends air conditioning performance and is appreciated by drivers who want cool comfort in their sleepers during their rest period.
A pre-booked visit to Westbury Court Garden in Gloucestershire. Was a rainy couple of hours. The garden was quite small, but the rain eventually stopped.
Westbury Court Garden is a Dutch water garden in Westbury-on-Severn, Gloucestershire, England, 9 miles (14 km) southwest of Gloucester.
It was laid out in 1696–1705, a rare survival not to have been replaced in the 18th century by a naturalistic garden landscape as popularised by Capability Brown. It is situated facing the high street of the rural village, extending on low-lying water meadows adjacent to the River Severn; the flat watery ground makes the site well suited to a Dutch-style garden, of which Westbury is the outstanding survival in Britain.
I kept seeing the massive spire of the Church of St Mary, St Peter and St Paul from the garden.
Grade II* Listed Building
Church of St Peter and St Paul
Listing Text
SO 71 SW WESTBURY-ON-SEVERN WESTBURY VILLAGE
11/215 Church of St. Peter and
St. Paul
GV II*
Large parish church: early C14, restored 1862 and 1878. North
facade thin, roughly squared grey stone brought to courses, larger,
squared stone to quoins, ashlar to windows, south and most of west
faces smooth reddish render lined as ashlar, chancel south and east
well-squared stone approaching ashlar: roof late C20 machine-made
red clay tile. Nave, aisles, north and south porches, chancel,
organ chamber and vestry: tower detached (q.v.). North facade:
high porch in centre of unbuttressed aisle: chamfered, 2-centred
archway, with hoodmould: wrought-iron gates, 2 rails at about 1
metre up, St. Andrews cross between, spiral dog bars with
spearheads. Top rail follows arch with another to nearly similar
line below: main bars with spear and volute heads. To right of
porch one 2-light window, trefoil heads to lights, solid stone
panel to flat hoodmould. To left one similar 3-light window and
one 3-light with flying ogee heads to lights below pointed head.
Gable parapets to porch, aisle, nave and chancel with cross-gablet
apex with stone cross to each: only porch has projecting moulded
kneelers. 2-bay chancel with large, central buttress: 2-light
windows with cinquefoil ogee heads to lights, quatrefoil over, and
hoodmould. West face, 3 gables, square-set buttress to nave only,
with splayed plinth. Ridges and windows to aisles offset towards
centre: windows 2-light, ogee heads, with recessed spandrels to
flat hoodmould. Nave wide 2-centred moulded doorway with
hoodmould and double boarded doors with applied timber tracery.
Above a flat cinquefoiled ogee-headed niche containing a calvary:
3-light Perpendicular window with hoodmould above.
Interior plastered: 7-bay nave arcade, alternate octagonal and
lobed pillars, with moulded caps and bases: hoodmoulds to plain
moulded arches, with small carved heads as stops. Quatrefoil
clerestory windows in alternate bays. Archbraced collar trusses
off corbels, crown post but no longitudinal timber. Aisles
exposed collar rafters; scissor-braced trusses to chancel, all
roofs C19. Tall Early English style arch to chancel, with leaf
capitals: similar on south and from south aisle to organ chamber.
Old cross-boarded door to vestry. 8-lobed piscina reset in south
chancel window sill. Carved reredos (1878) stone and alabaster
extended as blind arcading across east wall: aumbry to match on
left. Plain 6-sided 1862 stone pulpit, blind quatrefoils above
plinth: octagonal C19 stone font, with crosses, symbols of
evangelists and dove on bowl, over trefoil-headed blind arcading on
stem. An older octagonal stone bowl set on octagonal stem dated
1583, with royal arms, on a splayed base. A number of good C18
and early C19 wall monuments in chancel and at west end of aisles,
including one to T. Sinderby with violin and score in white marble
by J. Pearce of Frampton. 1686 monument in north porch, and
benefactions board. A number of good late C17 and C18 headstones
in churchyard not separately listed. Church restored 1862 by
Medland and Maberley, 1864 and 1876-78. (Victoria County History,
Gloucestershire, Vol X, 1972; D. Verey, Gloucestershire, The Vale
and the Forest of Dean, 1970).
Listing NGR: SO7171513886
This text is from the original listing, and may not necessarily reflect the current setting of the building.
A visit to Berrington Hall near Leominster in Herefordshire.The dome was being restored so part of the building was under scaffolding inside and out (including up the main staircase).
Berrington Hall is a country house located about 3 miles (4.8 km) north of Leominster, Herefordshire, England. During the 20th century it was the seat of the Cawley family.
It is a neoclassical country house building that Henry Holland designed in 1778-81 for Thomas Harley. It has a somewhat austere exterior, but the interiors are subtle and delicate. Berrington Hall is home to the Elmar Digby furniture collection, paintings by, amongst others, Thomas Luny (1759–1837), and the Charles Paget Wade costume collection from Snowshill, which can be viewed by appointment. The 'below stairs' areas and servants' quarters that are open to the public include a Victorian laundry and Georgian dairy. Berrington has been in the care of the National Trust since 1957 and is, along with its gardens, open to the public.
Berrington features Capability Brown's last landscape design. A notable feature is the ha-ha wall, which was subject to extensive renovation in the late 20th century by local craftsmen. Berrington Pool, a lake and island, is a Site of Special Scientific Interest.
Berrington had been in the possession of the Cornewall family since 1386, but was sold in 1775 to Thomas Harley, a banker and government contractor who in 1767 had been Lord Mayor of London. He commissioned the rebuilding in 1778-1781 of the present Berrington Hall in place of the previous old house. He made it available to his daughter Anne and her new husband George Rodney, the son of Admiral Rodney. After Harley's death the house descended in the Rodney family for 95 years.
In 1901 the Manchester businessman Frederick Cawley MP, later Baron Cawley, purchased the estate. In 1957 the 3rd Lord Cawley transferred it to the Treasury, which passed in on to the National Trust. Lady Crawley was allowed to remain in occupation until her death in 1978.
It was classified as a Grade I listed building in 1959.
Grade I Listed Building
Berrington Hall and Adjoining Outbuildings
Listing Text
EYE, MORETON &
SO 56 SW ASHTON CP
7/2 Berrington Hall and
adjoining outbuildings
11.6.59
GV I
Country house. 1778 - 1781 by Henry Holland for Thomas Harley. Alterations
of c1890 - 1900 involved the addition of a tower at the rear of the house,
this was removed in 1968 and the pediment to this face was reinstated. Set
in parkland laid out by Capability Brown. Brick core, faced with sandstone
ashlar with dressings of the same material, hipped Welsh slate roofs.
Rectangular plan main house with central entrance and stairwell, axial
stacks. Main entrance faces south-west, quadrant walls connect the main
block with the three outbuildings which form a courtyard to the rear (these
adjoining walls have been altered and one has been removed). Main house:
two storeys, attics and basements, south-west entrance front: seven bays
with plinth, dentilled cornice, blocking course and balustraded parapet,
steps up to central projecting tetrastyle Ionic portico; frieze is decorated
only to central part by a floral type design which replaces the original one
of putti, ox heads and garlands, pediment has a lunette window. Dormer windows
to attics with glazing bar sash windows, glazing bar sash windows to first
floor with semi-circular heads and decorative glazing to those flanking the
portico. Square-headed glazing bar sash windows to ground floor, the semi-
circular headed basement windows have rusticated surrounds. Central tall
and narrow semi-circular headed doorway with panelled door has keystone
depicting Roman head flanked by narrow side lights with reliefs depicting
urns above. The north-west front is of five bays with a pediment over the
central three bays. The north-east front to the courtyard entrance is of
2:3:2 bays with central pedimented slightly forward break, semi-circular
headed glazing bar sash windows to upper floor, square-headed windows to
ground floor with central three openings set in semi-circular headed surrounds,
right-hand opening now forms a doorway and has a six-panelled door. The out-
buildings enclosing the courtyard are of two storeys. The range to the north-
east is of nine bays with central pedimented archway flanked by pairs of Doric
pilasters, clock face in pediment, string course to flanking bays with 6-pane
square-headed windows to upper floor and semi-circular headed windows with
decorative glazing to ground floor. The ranges enclosing the courtyard to
the north-west and south-east are also of nine bays, each with similar windows
to the upper and lower floors, the central window to each range having a moulded
architrave, semi-circular headed window and doorway openings to ground floors.
To the outer walls of these flanking ranges (ie facing the gardens) are central
niches with coffered semi-domes with ball cresting above. The south-western
ends of both ranges have a blank semi-circular headed arch flanked by oculi.
Interior: the main house retains many of its original features on both main
floors, with decorative surrounds to doorways, decorative plastered ceilings
and marble fireplaces. The entrance hall has trophies in roundels above the
doors and a central circular ceiling panel is carried to the corners on spandrels,
pedimented surround to doorway opposite the entrance; polychrome marble patterned
floor. The Drawing Room retains original elaborate pelmets above the three
windows, marble fireplace with caryatids and griffon frieze. Delicately patterned
ceiling with painted roundels depicting scenes and characters from classical
mythology and with putti and sea horses; entwined roundels to outer border
which flank central theme. The boudoir has an alcove with segmental arch and
a screen of two blue scagliola columns. The Dining Room has a good marble
fireplace with carved panels to the jambs, decorative plastered and painted
ceiling with central painted roundel and swagged and wreathed plastered
surround. Pedimented bookcases to the library with continuous "greekkey"
type frieze. Decorative painted panels to ceiling depicting authors from
Chaucer to Addison. Central staircase hall is lit by delicately iron ribbed
glass domed lantern, opposite the staircase is a coffered archway; staircase
and landings carried on screens of scagliola columns, decorative dolphin
frieze to the entablature. The staircase has bronze lyre-shaped balustrading.
The outbuilding to the north-west formed the laundry and retains many of its
fittings. A tiled dairy has been restored in the south-east range and the
north-east range contains part stabling. (National Trust, 1986, Berrington Hall:
BoE, p 72).
Listing NGR: SO5093063660
This text is from the original listing, and may not necessarily reflect the current setting of the building.
These courtyard views from inside of the hall.
From rooms on the upper floor.
clock
+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
Some background
The Imperial Japanese Army Air Force's fighter force, especially the Nakajima Ki-43, had been underestimated in its capability, numbers and the strategy of its commanders. Within a few months, Japanese forces had conquered vast areas of the Pacific and South East Asia. During these campaigns, the ill-prepared Allied air forces in the Pacific suffered devastating losses.
Because of political and cultural ties between the United Kingdom and Australia, British manufacturers were the main source of RAAF aircraft. However, the British aircraft industry had long been hard-pressed to meet the needs of the RAF. Although United States companies had enormous aircraft manufacturing capacity, their output was now intended first and foremost for US air units. Even if aircraft built overseas did become available, they would be shipped long distances in wartime conditions, with consequent delays and losses. As a consequence, CAC came into its own with the development of the Boomerang fighter, which was not operational before late 1942.
Following the outbreak of war with Japan, 51 Hurricane Mk IIs were sent as a stop-gap in crates to Singapore, with 24 pilots, the nucleus of five squadrons. They arrived on 3 January 1942, by which time the Allied fighter squadrons in Singapore, flying Brewster Buffalos, had been overwhelmed in the Malayan campaign. Even though the Hurricanes were a significant progress, they suffered in performance.
Because of inadequate early warning systems, Japanese air raids were able to destroy 30 Hurricanes on the ground in Sumatra, most of them in one raid on 7 February. After Japanese landings in Singapore, on 10 February, only 18 serviceable Hurricanes remained out of the original 99. After Java was invaded, some of the pilots were evacuated by sea to Australia. 31 Hurricane airframes, which had been on the wayby ship, not been assembled and lacked Merlin engines, were directed to Australia in the wake of events.
From these unfinished machines, the Hurricane Mk. VI was quickly devised: the airframes were mated with P&W Twin Wasp engines, which were produced under license at the CAC plant in Lidcombe, Sydney, for the RAAF's Boomerang and Bristol Beaufort. It was clear from the start that these Twin Wasp-powered machines would rather be stop-gaps and no true fighters, rather fighter bombers and more suited for the ground attack role. Hence, like the latest fighters at the time, planning for the Mk. VI included automatic cannons. As no such weapons were manufactured locally, a British-made Hispano-Suiza 20 mm which an Australian airman had collected as a souvenir in the Middle East was reverse engineered – and four of them replaced the eight and partly twelve 0.303 machine guns of the original Mk. IIB machines. Additionally, the pilot received extra armor plating, and the wings were reinforced for external ordnance.
The RAAF Mk. VI Hurricanes carried A60-02 through -32 registrations. As a side note, A60-01 was a single Hurricane Mk.I serialled V-7476. This aircraft served with No.2 and 3 Communications Flights RAAF and was used on occasion for experimental work at RAAF Base Laverton on the outskirts of Melbourne. The aircraft was scrapped in 1945.
The Hurricane Mk. VIs actively took part in Pacific operations with RAAF’s No. 4 Squadron and No. 5 Squadron, being joined by Boomerangs in early 1943. They were operated in New Guinea and during the Solomon Islands Campaign as well as the Borneo Campaign, mostly in the close support role and with marked success.
Flying in pairs (one to observe the ground, the other to observe the air around them), their tasks included bombing, strafing, close infantry support and artillery spotting. When attacking larger enemy formations, the Hurricanes often operated in conjunction with the smaller and much more agile Boomerang fighter. In this role, a Boomerang would get in close to confirm the identity of the target and mark it with a 20 lb (9 kg) smoke bomb with the "cooperating" Hurricane, Beaufort or Havoc delivering the major ordnance in a quick run and from a safer distance. The partnership between RAAF planes and Royal New Zealand Air Force Corsair fighter bombers during the Bougainville Campaign was said to be particularly effective.
The Australian Hurricane Mk. VIs soldiered on until early 1945, when they were finally retired. The Twin Wasp engines were used for spares, all airframes were scrapped, no plane survived the war.
General characteristics:
Crew: 1
Length: 32 ft 3 in (9.84 m)
Wingspan: 40 ft 0 in (12.19 m)
Height: 13 ft 1½ in (4.0 m)
Wing area: 257.5 ft² (23.92 m²)
Empty weight: 5,745 lb (2,605 kg)
Loaded weight: 7,670 lb (3,480 kg)
Max. takeoff weight: 8,710 lb (3,950 kg)
Maximum speed: 331 mph (531 km/h)
Range: 650 mi (1.045 km)
Service ceiling: 36,000 ft (10,970 m)
Rate of climb: 2,303 ft/min (11.7 m/s)
Wing loading: 29.8 lb/ft² (121.9 kg/m²)
Power/mass: 0.15 hp/lb (0.25 kW/kg)
Engine: 1× Pratt & Whitney R-1830 Twin Wasp radial engine, 1,200 hp (895 kW)
Armament: 4× 20 mm (0.787 in) Hispano or CAC cannons; 2x 45-gallon (205 l) drop tanks or 2× 250 or 500 lb (110 or 230 kg) bombs
The kit and its assembly
The Hurricane Mk. VI is a whif, even though with little effort but a good story behind it. The original idea to mate a Hurricane with a radial engine came when I found a drawing of a Russian Hurricane, mated with a Schwezow ASch-82 engine. It looked… interesting. Not certain if this had been done for sure, but a great inspiration.
While browsing through the scrap heap I later found a Twin Wasp engine – that fueled the idea of a respective conversion. The Russian option was dead, but when I checked contemporary planes I came across the small Boomerang, and the historical facts were perfect for an obscure Australian Hurricane variant.
The rest was quickly done: the basic kit is a Hurricane Mk. IIC (Trop) from Hobby Boss, the Twin Wasp comes from a wrecked Matchbox PB4Y Privateer. The original Merlin was simply cut away and replaced by the "new" and relatively small radial engine. A surprisingly easy task, even though I had to widen the area in front of the cockpit by about 1mm to each side. With some putty and a new exhaust pipe with flame dampers, the surgical part was quickly done. A pilot was added, too, in order to distract from the rather bleak cockpit.
To make the plane look more interesting and suitable for a display on the ground, the flaps were lowered (scratch-built) and vertical and horizontal stabilizer were moved away from OOB neutral position. Additionally, the cooler under the fuselage was omitted, what creates together with the radial engine a very different side view. This "Aussie'cane" looks stout but disturbingly realistic, like a Boomerang’s big brother!
Only other changes/additions are a pilot figure and two wing hardpoints, holding bombs. The rest is OOB.
Painting
I have always been a fan of all-green RAAF WWII planes, so I chose such a simple livery. Inspiration came from real-life 4. Squadron Boomerangs, so I adopted the “QE” code and tried to mimic the overall look.
Interior surfaces were kept in Humbrol 78 ('Cockpit Green', dry-painted with light grey). The plane was painted with “Foilage Green” on all outer surfaces - a tone which seems to be heavily debated. Most sources claim FS 34092 (Humbrol 149) as a nowaday's replacement, but to me, this color is just too green and blue-ish. IMHO, “Foilage Green” has a rather yellow-ish hue - Humbrol 75 ("Bronze Green") would be better, if it wasn't too dark.
After some trials I settled for Humbrol 105 ("Army Green"). I think it is a sound compromise. It resembles FS 34096, but is (much) less grey-ish and offers that yellow hue I was looking for. Heavy weathering was done, esp. at the panel lines with dry-painted FS 34096 (Testors) and some panels "bleached" with Humbrol 86 ("Light live Green"). After deacls had been applied, some dry brushing with olive drab and light grey added to the worn and faded look, as well as flaked paint around the engine and the wings' leading egdes and soot stains at exhausts and guns. I wanted to emphasize the harsh climate conditions and duties of this fictional machine.
Only other colors are typical white quick recognition markings on tail and wings, painted with a mix of Humbrol 130 and 196 for a very light grey, with some white dry painting on th eleading edges.For a final clear coat, I used a matte varnish which still has a light gloss to it - “Foilage Green” and RAAF finishes were AFAIK supposed to be semi-matte and of higher quality that USAF paintjobs.
Markings come mostly from the scrap box. The RAAF insignia were taken from a Vultee Vengeance aftermarket sheet by Kanga Decals, which also provided the mid sea grey codes. The Australian registration numbers were improvised with single white letters from TL Modellbau decal sheets.
All in all I am happy with the result - a simple measure, a good story and even a very simple livery that allows room for imagination and painting effects. A nice lil' whif, the "Aussie'cane" Mk. VI.
NASA Administrator Charles Bolden, left, announces the agency’s selection of Boeing and SpaceX to transport U.S. crews to and from the International Space Station using the Boeing CST-100 and the SpaceX Crew Dragon spacecraft as Former astronaut Bob Cabana, director of NASA's Kennedy Space Center in Florida looks on at NASA’s Kennedy Space Center in Cape Canaveral, Fla. on Tuesday, Sept. 16, 2014. These Commercial Crew Transportation Capability (CCtCap) contracts are designed to complete the NASA certification for a human space transportation system capable of carrying people into orbit. Once certification is complete, NASA plans to use these systems to transport astronauts to the space station and return them safely to Earth. Photo Credit: (NASA/Bill Ingalls)
Harewood House, near Leeds, West Yorkshire.
Harewood House is a Grade 1 Country House near Leeds in West Yorkshire.
It was designed by architects John Carr and Robert Adam and built between 1759 and 1771 for wealthy plantation and slave owner Edwin Lascelles - the 1st Baron Harewood, and is still home to the Lascelles family.
The 1000 acre grounds were designed by Capability Brown.
The house is one of the ten 'Treasure Houses of England'.
3 Commando Brigade Cold Weather Warfare capability training in the high North region of Norway. Picture: POA(Phot) Dave Gallagher
3 Commando Brigade is developing its Cold Weather Warfare capability after ten years of campaigning in Iraq and Afghanistan.
The training is taking place in the High North region of Norway and is strategically important to the United Kingdom.
Norway is the largest external supplier of energy to the UK and as the polar icecap melts, activity in the wider region, including commercial shipping, resource exploitation, fishing and tourism, is set to increase. It is in our interest that we work with the Norwegians and that we have the skills that would be necessary if we needed to conduct military operations in the region.
SH150005
Some historic background:
A little-known fact of Corsair operations is that of the six air forces that flew the type operationally, two used their Corsairs against each other! Furthermore, this occasion was the last air war in which Second World War fighters were first-line equipment - the so-called 'Football War' between Honduras and El Salvador in 1969.
The Corsair, which was the respective fighter flown by both sides, came to Central and South America in the late 1950s, when the U.S. military aid program supplied F4U-5Ns to the Argentine Navy, followed during the next five years by Corsairs provided to Honduran and Salvadoran Air Forces.
While the Argentine Corsairs maintained their night-fighting capability throughout their service and flew from a carrier, the 10 F4U-5NL Corsairs provided to Honduras lost their night-fighting and winterized equipment before they left Litchfield Park, Arizona, in 1956. Honduras received further eight F4U-4 Corsairs in 1960-61, at which time El Salvador received twelve Goodyear FG-1A and FG-1D Corsairs.
The Football War (a.k.a. 'La Guerra del Fútbol' in Spanish), also known as the 'Soccer War' or '100 hour War', was a four-day conflict fought by El Salvador and Honduras in 1969. While the name made good newspaper copy, it was completely inaccurate as to the cause of the war. The clash was actually the result of long-standing disputes regarding border territory between the two countries, caused by political conflicts between Hondurans and Salvadorans, namely issues concerning immigration from El Salvador to Honduras. These existing tensions between the two countries coincided with the inflamed rioting during the second North American qualifying round of the 1970 FIFA World Cup, hence the rather inappropriate name for the incident.
On 14 July 1969, the Salvadoran army launched an attack against Honduras. Outside of some use of P-51 Mustangs flown by American mercenaries by the Salvadorans, however, all air combat took place between Corsairs of the two air forces, and legend has it that this incident was also the last combat appearance of the P-47 Thunderbolt.
The Organization of American States negotiated a cease-fire which took effect on 20 July, with the Salvadoran troops withdrawn in early August - and the Corsairs remained in service until 1974.
The kit and its assembly
This model kit depicts (or tries to...) one of the Goodyear-built FG-1D/F4U-1D fighters used by El Salvador during the 1969 ‘Football War' conflict with Honduras. When I accidently came across a profile of one of those machines some time ago, I knew that I HAD to build one, because the camouflage scheme is so unique and totally off of what one is used to see on a Corsair. The idea, like so many others, lingered for some time (years...), but finally I decided to take the idea to a hardware stage.
There seems to be a kit available for such a Salvadoran Corsair, from Hobby Craft, but only in 1/48 scale. Because I stay with 1/72 scale, I took a stock F4U-1D from Hobby Boss, a simple and cheap kit which resembles a FG-1A which was flown by Salvadoran forces, and pimped it slightly to my needs, making it Fuerza Aerea Salvadorena's machine '219'.
The Corsair kit was built more or less OOB. Just some details like typical antennae were added, hydraulic pipes on the landing gear, and some cockpit flitter like a pilot figure and seat belts made from masking tape. Nothing fancy, though. The kit is simple, and well detailed for the price point.
I was uncertain about external stores. I do not believe that the Salvadoran Corsairs actually carried heavy loads during the conflict. The Hobby Craft box art shows the Salvadoran FG-1D carrying eight 5" HVARs, but I am sceptical. Anyway, I did not want to leave the Corsair naked, but I limited the external weapon's load to two drop tanks (The FG-1D had its wing tanks deleted, so carrying drop tanks for long-range missions was typical) and four heavier 6.75" 'Ram' ATARs under the outer wing pylons. These come from a vintage Airfix A-1 Skyraider kit, the launch rails were taken from a Hawker Fury from PM Models. Not perfect, but they fit the bill.
By the way, the original missile rack attachment points were hidden under polystyrene plugs and putty - the Hobby Boss kit features a total of eight HUGE carvings under its wings to hold the eight missiles, but their respective pylons are molded onto the missiles and I found this solution rather clumsy and ugly - one of the few true drawbacks of the kit.
Painting
A tough task, in many ways. Finding pictures for an authentic Salvadoran Corsair is not easy, and I learned not (only) to rely on painted profiles and artwork. I did some legwork and tried to figure out how and with what to paint this special Corsair, with little success - even professional sources like Aztec Decals (who offer a sheet for 'Football War' Corsairs from both sides!) are careful with schemes and color suggestions. Anyway, some inspiration for my kit was taken from David W. Aungst's nice 1/48 scale kit review, though (see hsfeatures.com/features04/fg1ddwa_2.htm), and my motivation for this Corsair sounds pretty much the same as his: "Here I have a shape that everybody recognizes, in a color scheme that just looks wrong." Totally agree!
'FAS 219' is one of those machines delivered from the United States that actively served during the conflict. To me the paint scheme (or its depictions in side views) looks like an originally overall Gull Grey, with additional, improvised and heavily worn jungle camouflage, and finally adorned with extra deep yellow high visibility markings.
Information is contradictive whether the Football War Corsairs already carried the prominent yellow ID stripes (against friendly fire – the enemy flew that plane, too!), of if they had been applied later? More controversy concerns the lower surfaces: most references show a light grey underside. Some sources claim that the dark, upper cammo scheme was wrapped around the whole aircraft, though. Maybe they were even white (see below)? On so it goes on and on...
As a side note, there must have been at least one formerly all-dark blue Corsair with makeshift green cammo from above, but I could not find sufficient info about it. But THAT would look even more daring!
Well, I build 'for the overall impression'. So I stayed with the concept of a hastily painted, grey machine. Since no (good) real-life color pictures were available (at least to me), the number of colors and their actual look remain speculative. I settled for three tones from above: a sand tone, probably a faded tan like FS 30219, a light grey/green and a dark/forest green. I tried to use lighter tones for upper surfaces, adding the darker tones for side areas like the flanks or vertical stabilizer to simulate sun-bleaching. All was painted by hand, with an intended "hand -made" look.
For basic colors I chose:
Humbrol 63 (Sand, FS 30257?),
mixed with Humbrol 118 (FS 30219) in lower regions
Humbrol 78 (Cockpit Green, ~FS 34159),
toned up with Humbrol 120 (Light Green, FS 34227) on upper surfaces
Humbrol 105 (Marine Green, FS 34097),
toned down with Humbrol 117 (Fs 34102) in lower regions
Humbrol 129 (US Gull Grey, FS 36440) for below,
dry-brushed with Humbrol 28
Interior surfaces were kept in US style interior green. I used Humbrol 224, dry-painted with 80, for a dirty zinc chromate look inside of the cockpit and the landing gear wells - it could even be that the latter were all white, since the Corsairs carried a fancy all-white livery with neat blue trim during the mid 60ies, which rumored to have been taken into the plane's interior. But again: who knows for sure?
The drop tanks were painted in a lighter shade of gray (Humbrol 196), just to add to the shaggy overall look of this machine.
The characteristic yellow identification stripes are all decals, cut by hand from a large sheet from TL Modellbau's 'Colour Series' (approx. RAL 1003). Numbers, letters and insignia also come from various TL Modellbau decal sheets. National markings are actually Hellenic, remains from the Gloster Gladiator project some time ago.
The machine was weathered with a black ink wash and dry painting with olive drab, light grey and hemp, esp. with lighter shades of the camouflage tones on the upper surfaces. Normally, such a treatment is rather used on military vehicles in larger scales, because it can make small scale kits and esp. planes look very shabby. But with the improvised look of the Salvadoran Corsair, its age, the harsh climate and probably rather poor maintenance during the days of conflict, it matches IMHO well.
A very nice and exotic model kit – far from perfect, since anything is rather improvised and guesstimated, but I like the plane’s weird look. I do not claim to be historically correct, heck, but this Corsair really has a sweet and "different" style. And it has more historic value than one might think!
Staff Sgt. Cory Van Dyke of the New Jersey Army National Guard’s Headquarters Co., 2nd Battalion, 113th Infantry Regiment, 44th Infantry Brigade Combat Team, surveys a target village prior to a live-fire training during the eXportable Combat Training Capability (XCTC) exercise on July 12, 2022 at Fort Drum, New York. More than 2,500 Soldiers are participating in the training event, which enables brigade combat teams to achieve the trained platoon readiness necessary to deploy, fight, and win. (U.S. Army National Guard photo by Sgt. Bruce Daddis)
From Left to Right:
Make: Volvo
Model: Unknown
Service: Hampshire Fire and Rescue Service
Station: Basingstoke Fire Station
Role: Enhanced Capability Rescue Pump
Callsign: FJH01 P7
Reg: KR16 XMJ
Make: Volvo
Model: Unknown
Service: Hampshire Fire and Rescue Service
Station: Reserve Appliance (HQ)
Role: Water Tender
Callsign: Reserve 6
Reg: HX03 WSD
Make: Volvo
Model: Unknown
Service: Hampshire Fire and Rescue Service
Station: Basingstoke Fire Station
Role: Rescue Support Vehicle
Callsign: FJH01 R1
Reg: HX14 EGD
Staff Sgt. Helmut Woodberry of the Illinois Air National Guard’s 126th Communications Flight works on a radio frequency control unit in a Joint Incident Site Communications Capability site at Muniz Air National Guard Base, Puerto Rico. The Air National Guard is working with many federal, territory and local agencies in response to Hurricane Maria. (U.S. Air National Guard photo by Tech. Sgt. Dan Heaton)
A Strategic Airlift Capability/Heavy Airlift Wing Boeing C-17A Globemaster III parked on the apron of Eindhoven Air Base with a MMF A330-200MRTT taking off in the background
"Burghley House is a grand sixteenth-century English country house near Stamford, Lincolnshire. It is a leading example of the Elizabethan prodigy house, built and still lived in by the Cecil family. The exterior largely retains its Elizabethan appearance, but most of the interiors date from remodellings before 1800. The house is open to the public and displays a circuit of grand and richly furnished state apartments. Its park was laid out by Capability Brown.
The house is on the boundary of the civil parishes of Barnack and St Martin's Without in the Peterborough unitary authority of Cambridgeshire. It was formerly part of the Soke of Peterborough, an historic area that was traditionally associated with Northamptonshire. It lies 0.9 miles (1.4 km) south of Stamford and 10 miles (16 km) northwest of Peterborough city centre.
The house is now run by the Burghley House Preservation Trust, which is controlled by the Cecil family.
Burghley was built for Sir William Cecil, later 1st Baron Burghley, who was Lord High Treasurer to Queen Elizabeth I of England, between 1555 and 1587, and modelled on the privy lodgings of Richmond Palace. It was subsequently the residence of his descendants, the Earls, and since 1801, the Marquesses of Exeter. Since 1961, it has been owned by a charitable trust established by the family.
Lady Victoria Leatham, antiques expert and television personality, followed her father, Olympic gold-medal winning athlete, IAAF President and MP, David Cecil, the 6th Marquess, by running the house from 1982 to 2007. The Olympic corridor commemorates her father. Her daughter, Miranda Rock, is now the most active live-in trustee. However, the Marquessate passed it in 1988 to Victoria's uncle, Martin Cecil, 7th Marquess of Exeter, and then to his son, William Michael Anthony Cecil, both Canadian ranchers on land originally bought by the 5th Marquess, who have not lived at Burghley.
The house is one of the main examples of stonemasonry and proportion in sixteenth-century English Elizabethan architecture, reflecting the prominence of its founder, and the lucrative wool trade of the Cecil estates. It has a suite of rooms remodelled in the baroque style, with carvings by Grinling Gibbons. The main part of the house has 35 major rooms, on the ground and first floors. There are more than 80 lesser rooms and numerous halls, corridors, bathrooms, and service areas.
In the seventeenth century, the open loggias around the ground floor were enclosed. Although the house was built in the floor plan shape of the Letter E, in honour of Queen Elizabeth, it is now missing its north-west wing. During the period of the 9th Earl's ownership, and under the guidance of the famous landscape architect, Capability Brown, the south front was raised to alter the roof line, and the north-west wing was demolished to allow better views of the new parkland. A chimney-piece after the design of Venetian printmaker Giovanni Battista Piranesi was also added during his tenure.
The so-called "Hell Staircase" and its neighbour "The Heaven Room" has substantial ceiling paintings by Antonio Verrio, between 1697 and 1699. The walls to the "Hell Staircase" are by Thomas Stothard, who completed the work about a century later. The Bow Room is decorated with wall and ceiling paintings by Louis Laguerre." - info from Wikipedia.
Summer 2019 I did a solo cycling tour across Europe through 12 countries over the course of 3 months. I began my adventure in Edinburgh, Scotland and finished in Florence, Italy cycling 8,816 km. During my trip I took 47,000 photos.
Now on Instagram.
Architectural gem Chatsworth House near Bakewell in the Derbyshire Peak District is one of Britain's finest stately homes in the classical Palladian style. Designed by the architects William Talman and Thomas Archer, the 4th Earl and later 1st Duke of Devonshire had Chatsworth rebuilt between 1687 and 1707, replacing a former Elizabethan mansion. Later under the 4th Duke, Lancelot 'Capability' Brown was commissioned to design Chatsworth's magnificent gardens whilst James Paine designed a new wing to the north of the house. Chatsworth has featured in many TV programmes and films including in recent times 'The Duchess' (2008) with Keira Knightley and 'Pride and Prejudice' (2004).
While the F-16A had proven a success, its lack of long-range missile and true all-weather capability hampered it, especially in projected combat against the Warsaw Pact over Central Europe. General Dynamics began work on the upgraded F-16C/D version, with the first Block 25 F-16C flying in June 1984 and entering USAF service that September.
Externally, the only ways to tell apart the F-16C from the F-16A is the slightly enlarged base of the tail and a UHF radio antenna at the base of the tail. The intake is also slightly larger, though later marks of the F-16A also have this feature. Internally, however, the F-16C is a significantly different aircraft. The earlier APG-66 radar was replaced by the APG-68 multimode radar used by the F/A-18, which gave the F-16C the same capability to switch between ground-attack and dogfight mode and vastly improved all-weather capability. Cockpit layout was also changed in response to pilots’ requests, with a larger Heads-Up Display and movement of the radar display to eye level rather than between the pilot’s legs on the F-16A. The F-16C would also have the capability to carry the AIM-120 AMRAAM, though it would not be until 1992 that the missile entered service. Other small upgrades were made throughout the design, including the engine.
The Block 25 initial production was superseded by the Block 30 F-16C in 1987, which gave it better navigation systems, and the capability to carry the either the General Electric F110 or the Pratt and Whitney F100 turbofan. The Block 40/42 “Night Falcon” followed in 1988, equipped with LANTIRN night attack pods, followed by the Block 50/52, which was a dedicated Wild Weasel variant. In USAF service, the latter are semi-officially known as F-16CG and F-16CJ variants.
The F-16C had replaced the F-16A in nearly all overseas USAF units by the First Gulf War in 1991, and as a result, the aircraft was among the first deployed to the theater in August 1990. During the war, the F-16C was used mainly in ground attack and strike sorties, due to delays in the AIM-120, but it performed superbly in this role. USAF F-16s finally scored kills in the F-16C, beginning in 1992, when an Iraqi MiG-23 was shot down over the southern no-fly zone; the victory was also the first with the AMRAAM. Four Serbian G-4 Super Galebs were shot down over Bosnia in 1994. F-16Cs had replaced the F-16A entirely in regular and Reserve USAF service by 1997, and further service was seen over Kosovo, Iraq, Afghanistan, and Libya by 2012. Subsequent upgrades to USAF F-16Cs with GPS allow them to carry advanced precision weapons such as JSOW and JDAM.
Whatever the variant, the F-16 is today the most prolific combat aircraft in existence, with 28 nations operating the type (17 of which operate F-16Cs). Over 4450 have been built, with more in production; the F-16C is also license-produced by Turkey and South Korea. It also forms the basis for the Mitsubishi F-2 fighter for Japan, though the F-2 is significantly different, with a longer nose and larger wing. Though the USAF projects that the F-16C will be replaced by the F-35 beginning in 2020, it will likely remain in service for a very long time.
The 120th Fighter Wing (Montana ANG) was naturally in attendance for the Missoula, Montana airshow in 2004. Two of their F-16s were in attendance, including 86-0278, a former 8th FW example that was assigned to the 120th in 2001; it was named "City of Bozeman," though the name was carried on the ventral fins and isn't visible in this shot. It saw combat over Iraq in 2008. Just after 0278 returned from the Middle East, the 120th reequipped with F-15s and 0278 was transferred to the 158th FW (Vermont ANG) and then to the 113th Wing (DC ANG), guarding the nation's capital.
This view shows the 120th's distinctive tail markings: the mountains represent Montana's Rocky Mountains, while the skull was the personal artist's mark of famous Western painter Charles M. Russell, a native of Great Falls, where the 120th is based. The title "Vigilantes" tail stripe was changed from the F-106's "Big Sky Country," and carries the number 3-7-77--the traditional calling card of the vigilantes, Montana's first semi-organized law enforcement, formed in 1864.
This is one of the few shots I have from the 2004 Missoula airshow, which was the hottest I have ever been to: it was 100 degrees air temperature, and easily 110 on the tarmac.
+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
Some background:
After the success of the Soviet Union’s first carrier ship, the Moskva Class (Projekt 1123, also called „Кондор“/„Kondor“) cruisers in the mid 1960s, the country became more ambitious. This resulted in Project 1153 Orel (Russian: Орёл, Eagle), a planned 1970s-era Soviet program to give the Soviet Navy a true blue water aviation capability. Project Orel would have resulted in a program very similar to the aircraft carriers available to the U.S. Navy. The ship would have been about 75-80,000 tons displacement, with a nuclear power plant and carried about 70 aircraft launched via steam catapults – the first Soviet aircraft carrier that would be able to deploy fixed-wing aircraft.
Beyond this core capability, the Orel carrier was designed with a large offensive capability with the ship mounts including 24 vertical launch tubes for anti-ship cruise missiles. In the USSR it was actually classified as the "large cruiser with aircraft armament".
Anyway, the carrier needed appropriate aircraft, and in order to develop a the aircraft major design bureaus were asked to submit ideas and proposals in 1959. OKB Yakovlev and MiG responded. While Yakovlev concentrated on the Yak-36 VTOL design that could also be deployed aboard of smaller ships without catapult and arrester equipment, Mikoyan-Gurevich looked at navalized variants of existing or projected aircraft.
While land-based fighters went through a remarkable performance improvement during the 60ies, OKB MiG considered a robust aircraft with proven systems and – foremost – two engines to be the best start for the Soviet Union’s first naval fighter. “Learning by doing”, the gathered experience would then be used in a dedicated new design that would be ready in the mid 70ies when Project 1153 was ready for service, too.
Internally designated “I-SK” or “SK-01” (Samolyot Korabelniy = carrier-borne aircraft), the naval fighter was based on the MiG-19 (NATO: Farmer), which had been in production in the USSR since 1954.
Faster and more modern types like the MiG-21 were rejected for a naval conversion because of their poor take-off performance, uncertain aerodynamics in the naval environment and lack of ruggedness. The MiG-19 also offered the benefit of relatively compact dimensions, as well as a structure that would carry the desired two engines.
Several innovations had to be addresses:
- A new wing for improved low speed handling
- Improvement of the landing gear and internal structures for carrier operations
- Development of a wing folding mechanism
- Integration of arrester hook and catapult launch devices into the structure
- Protection of structure, engine and equipment from the aggressive naval environment
- Improvement of the pilot’s field of view for carrier landings
- Improved avionics, esp. for navigation
Work on the SK-01 started in 1960, and by 1962 a heavily redesigned MiG-19 was ready as a mock-up for inspection and further approval. The “new” aircraft shared the outlines with the land-based MiG-19, but the nose section was completely new and shared a certain similarity to the experimental “Aircraft SN”, a MiG-17 derivative with side air intakes and a solid nose that carried a. Unlike the latter, the cockpit had been moved forward, which offered, together with an enlarged canopy and a short nose, an excellent field of view for the pilot.
On the SK-01 the air intakes with short splitter plates were re-located to the fuselage flanks underneath the cockpit. In order to avoid gun smoke ingestion problems (and the lack of space in the nose for any equipment except for a small SRD-3 Grad gun ranging radar, coupled with an ASP-5N computing gun-sight), the SK-01’s internal armament, a pair of NR-30 cannon, was placed in the wing roots.
The wing itself was another major modification, it featured a reduced sweep of only 33° at ¼ chord angle (compared to the MiG-19’s original 55°). Four wing hardpoints, outside of the landing gear wells, could carry a modest ordnance payload, including rocket and gun pods, unguided missiles, iron bombs and up to four Vympel K-13 AAMs.
Outside of these pylons, the wings featured a folding mechanism that allowed the wing span to be reduced from 10 m to 6.5 m for stowage. The fin remained unchanged, but the stabilizers had a reduced sweep, too.
The single ventral fin of the MiG-19 gave way to a fairing for a massive, semi-retractable arrester hook, flanked by a pair of smaller fins. The landing gear was beefed up, too, with a stronger suspension. Catapult launch from deck was to be realized through expandable cables that were attached onto massive hooks under the fuselage.
The SK-01 received a “thumbs up” in March 1962 and three prototypes, powered by special Sorokin R3M-28 engines, derivatives of the MiG-19's RB-9 that were adapted to the naval environment, were created and tested until 1965, when the type – now designated MiG-SK – went through State Acceptance Trials, including simulated landing tests on an “unsinkalble carrier” dummy, a modified part of the runway at Air Base at the Western coast of the Caspian Sea. Not only flight tests were conducted at Kaspiysk, but also different layouts for landing cables were tested and optimized as well. Furthermore, on a special platform at the coast, an experimental steam catapult went through trials, even though no aircraft starts were made from it – but weights hauled out into the sea.
Anyway, the flight tests and the landing performance on the simulated carrier deck were successful, and while the MiG-SK (the machine differed from the MiG-19 so much that it was not recognized as an official MiG-19 variant) was not an outstanding combat aircraft, rather a technology carrier with field use capabilities.
The MiG-SK’s performance was good enough to earn OKB MiG an initial production run of 20 aircraft, primarily intended for training and development units, since the whole infrastructure and procedures for naval aviation from a carrier had to be developed from scratch. These machines were built at slow pace until 1968 and trials were carried out in the vicinity of the Black Sea and the Caspian Sea.
The MiG-SK successfully remained hidden from the public, since the Soviet Navy did not want to give away its plans for a CTOL carrier. Spy flights of balloons and aircraft recognized the MiG-SK, but the type was mistaken as MiG-17 fighters. Consequently, no NATO codename was ever allocated.
Alas, the future of the Soviet, carrier-borne fixed wing aircraft was not bright: Laid down in in 1970, the Kiev-class aircraft carriers (also known as Project 1143 or as the Krechyet (Gyrfalcon) class) were the first class of fixed-wing aircraft carriers to be built in the Soviet Union, and they entered service, together with the Yak-38 (Forger) VTOL fighter, in 1973. This weapon system already offered a combat performance similar to the MiG-SK, and the VTOL concept rendered the need for catapult launch and deck landing capability obsolete.
OKB MiG still tried to lobby for a CTOL aircraft (in the meantime, the swing-wing MiG-23 was on the drawing board, as well as a projected, navalized multi-purpose derivative, the MiG-23K), but to no avail.
Furthermore, carrier Project 1153 was cancelled in October 1978 as being too expensive, and a program for a smaller ship called Project 11435, more V/STOL-aircraft-oriented, was developed instead; in its initial stage, a version of 65,000 tons and 52 aircraft was proposed, but eventually an even smaller ship was built in the form of the Kuznetsov-class aircraft carriers in 1985, outfitted with a 12-degree ski-jump bow flight deck instead of using complex aircraft catapults. This CTOL carrier was finally equipped with navalized Su-33, MiG-29 and Su-25 aircraft – and the MiG-SK paved the early way to these shipboard fighters, especially the MiG-29K.
General characteristics:
Crew: One
Length: 13.28 m (43 ft 6 in)
Wingspan: 10.39 m (34 ft)
Height: 3.9 m (12 ft 10 in)
Wing area: 22.6 m² (242.5 ft²)
Empty weight: 5.172 kg (11,392 lb)
Max. take-off weight: 7,560 kg (16,632 lb)
Powerplant:
2× Sorokin R3M-28 turbojets afterburning turbojets, rated at 33.8 kN (7,605 lbf) each
Performance:
Maximum speed: 1,145 km/h (618 knots, 711 mph) at 3,000 m (10,000 ft)
Range: 2,060 km (1,111 nmi, 1,280 mi) with drop tanks
Service ceiling: 17,500 m (57,400 ft)
Rate of climb: 180 m/s (35,425 ft/min)
Wing loading: 302.4 kg/m² (61.6 lb/ft²)
Thrust/weight: 0.86
Armament:
2x 30 mm NR-30 cannons in the wing roots with 75 RPG
4x underwing pylons, with a maximum load of 1.000 kg (2.205 lb)
The kit and its assembly:
This kitbash creation was spawned by thoughts concerning the Soviet Naval Aviation and its lack of CTOL aircraft carriers until the 1980ies and kicked-off by a CG rendition of a navalized MiG-17 from fellow member SPINNERS at whatifmodelers.com, posted a couple of months ago. I liked this idea, and at first I wanted to convert a MiG-17 with a solid nose as a dedicated carrier aircraft. But the more I thought about it and did historic research, the less probable this concept appeared to me: the MiG-17 was simply too old to match Soviet plans for a carrier ship, at least with the real world as reference.
A plausible alternative was the MiG-19, esp. with its twin-engine layout, even though the highly swept wings and the associated high start and landing speeds would be rather inappropriate for a shipborne fighter. Anyway, a MiG-21 was even less suitable, and I eventually took the Farmer as conversion basis, since it would also fit into the historic time frame between the late 60ies and the mid-70ies.
In this case, the basis is a Plastyk MiG-19 kit, one of the many Eastern European re-incarnations of the vintage KP kit. This cheap re-issue became a positive surprise, because any former raised panel and rivet details have disappeared and were replaced with sound, recessed engravings. The kit is still a bit clumsy, the walls are very thick (esp. the canopy – maybe 2mm!), but IMHO it’s a considerable improvement with acceptable fit, even though there are some sink holes and some nasty surprises (in my case, for instance, the stabilizer fins would not match with the rear fuselage at all, and you basically need putty everywhere).
Not much from the Plastyk kit was taken over, though: only the fuselage’s rear two-thirds were used, some landing gear parts as well as fin and the horizontal stabilizers. The latter were heavily modified and reduced in sweep in order to match new wings from a Hobby Boss MiG-15 (the parts were cut into three pieces each and then set back together again).
Furthermore, the complete front section from a Novo Supermarine Attacker was transplanted, because its short nose and the high cockpit are perfect parts for a carrier aircraft. The Attacker’s front end, including the air intakes, fits almost perfectly onto the round MiG-19 forward fuselage, only little body work was necessary. A complete cockpit tub and a new seat were implanted, as well as a front landing gear well and walls inside of the (otherwise empty) air intakes. The jet exhausts were drilled open, too, and afterburner dummies added. Simple jobs.
On the other side, the wings were trickier than expected. The MiG-19 kit comes with voluminous and massive wing root fairings, probably aerodynamic bodies for some area-ruling. I decided to keep them, but this caused some unexpected troubles…
The MiG-15 wings’ position, considerably further back due to the reduced sweep angle, was deduced from the relative MiG-19’s landing gear position. A lot of sculpting and body work followed, and after the wings were finally in place I recognized that the aforementioned, thick wing root fairings had reduced the wing sweep – basically not a bad thing, but with the inconvenient side effect that the original wing MiG-15 fences were not parallel to the fuselage anymore, looking rather awkward! What to do? Grrrr…. I could not leave it that way, so I scraped them away and replaced with them with four scratched substitutes (from styrene profiles), moving the outer pair towards the wing folding mechanism.
Under the wings, four new pylons were added (two from an IAI Kfir, two from a Su-22) and the ordnance gathered from the scrap box – bombs and rocket pods formerly belonged to a Kangnam/Revell Yak-38.
The landing gear was raised by ~2mm for a higher stance on the ground. The original, thick central fin was reduced in length, so that it could become a plausible attachment point for an arrester hook (also from the spares box), and a pair of splayed stabilizer fins was added as a compensation. Finally, some of the OOB air scoops were placed all round the hull and some pitots, antennae and a gun camera fairing added.
Painting and markings:
This whif was to look naval at first sight, so I referred to the early Yak-38 VTOL aircraft and their rather minimalistic paint scheme in an overall dull blue. The green underside, seen on many service aircraft, was AFAIK a (later) protective coating – an obsolete detail for a CTOL aircraft.
Hence, all upper surfaces and the fuselage were painted in a uniform “Field Blue” (Tamiya XF-50). It’s a bit dark, but I have used this unique, petrol blue tone many moons ago on a real world Kangnam Forger where it looks pretty good, and in this case the surface was furthermore shaded with Humbrol 96 and 126 after a black in wash.
For some contrast I painted the undersides of the wings and stabilizers as well as a fuselage section between the wings in a pale grey (Humbrol 167), seen on one of the Yak-38 prototypes. Not very obvious, but at least the aircraft did not end up in a boring, uniform color.
The interior was painted in blue-gray (PRU Blue, shaded with Humbrol 87) while the landing gear wells became Aluminum (Humbrol 56). The wheel discs became bright green, just in order to keep in style and as a colorful contrast, and some di-electric panels and covers became very light grey or bright green. For some color contrast, the anti-flutter weight tips on the stabilizers as well as the pylons’ front ends were painted bright red.
The markings/decals reflect the early Soviet Navy style, with simple Red Stars, large yellow tactical codes and some high contrast warning stencils, taken from the remains of a Yak-38 sheet (American Revell re-release of the Kangnam kit).
Finally, after some soot stains with graphite around the gun muzzles and the air bleed doors, the kit was sealed with a coat of semi-matt acrylic varnish and some matt accents (anti-glare panel, radomes).
A simple idea that turned out to be more complex than expected, due to the wing fence troubles. But I am happy that the Attacker nose could be so easily transplanted, it changes the MiG-19’s look considerably, as well as the wings with (much) less sweep angle.
The aircraft looks familiar, but you only recognize at second glance that it is more than just a MiG-19 with a solid nose. The thing looks pretty retro, reminds me a bit of the Supermarine Scimitar (dunno?), and IMHO it appears more Chinese than Soviet (maybe because the layout reminds a lot of the Q-5 fighter bomber)? It could even, with appropriate markings, be a Luft ’46 design?
Solders from Bravo Company, 1st Battalion, 294th Infantry Regiment, Guam Army National Guard, prepare to advance on a hilly, rugged terrain in an Exportable Combat Training Capability (XCTC) training lane June 11 at Camp Roberts, California. More than 2,000 National Guardsmen from Guam, Hawaii, Arizona and California are participating in the training. U.S. Army National Guard photo/Staff Sgt. Eddie Siguenza)
Posted via email to ☛ HoloChromaCinePhotoRamaScope‽: http://cdevers.posterous.com/false-color-osprey-on-boston-common.
Pictures kept coming out like this until, Fonzie-stylee, I gave the camera a good solid whack on the side. Yes, that really fixed it.
• • • • •
Pasted from Wikipedia: Bell-Boeing V-22 Osprey
• • • • •
The Bell-Boeing V-22 Osprey is a multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The V-22 originated from the U.S. Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. It was developed jointly by the Bell Helicopter, and Boeing Helicopters team, known as Bell Boeing, which produce the aircraft.[4] The V-22 first flew in 1989, and began years of flight testing and design alterations.
The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007. The Osprey's other operator, the U.S. Air Force fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed for combat operations in Iraq and Afghanistan.
Contents
•• 1.2 Flight testing and design changes
• 2 Design
• 8 Notable appearances in media
Development
Early development
The failure of the Iran hostage rescue mission in 1980 demonstrated to the United States military a need[5] for "a new type of aircraft, that could not only take off and land vertically but also could carry combat troops, and do so at speed."[6] The U.S. Department of Defense began the Joint-service Vertical take-off/landing Experimental (JVX) aircraft program in 1981, under U.S. Army leadership. Later the U.S. Navy/Marine Corps took the lead.[7][8] The JVX combined requirements from the Marine Corps, Air Force, Army and Navy.[9][10] A request for proposals (RFP) was issued in December 1982 for JVX preliminary design work. Interest in the program was expressed by Aérospatiale, Bell Helicopter, Boeing Vertol, Grumman, Lockheed, and Westland. The DoD pushed for contractors to form teams. Bell partnered with Boeing Vertol. The Bell Boeing team submitted a proposal for a enlarged version of the Bell XV-15 prototype on 17 February 1983. This was the only proposal received and a preliminary design contract was awarded on 26 April 1983.[11][12]
The JVX aircraft was designated V-22 Osprey on 15 January 1985; by March that same year the first six prototypes were being produced, and Boeing Vertol was expanded to deal with the project workload.[13][14] Work has been split evenly between Bell and Boeing. Bell Helicopter manufactures and integrates the wing, nacelles, rotors, drive system, tail surfaces, and aft ramp, as well as integrates the Rolls-Royce engines and performs final assembly. Boeing Helicopters manufactures and integrates the fuselage, cockpit, avionics, and flight controls.[4][15] The USMC variant of the Osprey received the MV-22 designation and the Air Force variant received CV-22; reversed from normal procedure to prevent Marine Ospreys from having a conflicting designation with aircraft carriers (CV).[16] Full-scale development of the V-22 tilt-rotor aircraft began in 1986.[2] On 3 May 1986 the Bell-Boeing partnership was awarded a $1.714 billion contract for V-22 aircraft by the Navy, thus at this point the project had acquisition plans with all four arms of the U.S. military.[17]
The first V-22 was rolled out with significant media attention in May 1988.[18][19] However the project suffered several political blows. Firstly in the same year, the Army left the program, citing a need to focus its budget on more immediate aviation programs.[20] The project also faced considerable dialogue in the Senate, surviving two votes that both could have resulted in cancellation.[21][22] Despite the Senate's decision, the Department of Defense instructed the Navy not to spend more money on the Osprey.[23] At the same time, the Bush administration sought the cancellation of the project.[23]
Flight testing and design changes
The first of six MV-22 prototypes first flew on 19 March 1989 in the helicopter mode,[24] and on 14 September 1989 as a fixed-wing plane.[25] The third and fourth prototypes successfully completed the Osprey's first Sea Trials on the USS Wasp in December 1990.[26] However, the fourth and fifth prototypes crashed in 1991-92.[27] Flight tests were resumed in August 1993 after changes were incorporated in the prototypes.[2] From October 1992 until April 1993, Bell and Boeing redesigned the V-22 to reduce empty weight, simplify manufacture and reduce production costs. This redesigned version became the B-model.[28]
Flight testing of four full-scale development V-22s began in early 1997 when the first pre-production V-22 was delivered to the Naval Air Warfare Test Center, Naval Air Station Patuxent River, Maryland. The first EMD flight took place on 5 February 1997. The first of four low rate initial production aircraft, ordered on 28 April 1997, was delivered on 27 May 1999. Osprey number 10 completed the program's second Sea Trials, this time from the USS Saipan in January 1999.[2] During external load testing in April 1999, Boeing used a V-22 to lift and transport the M777 howitzer.[29] In 2000, Boeing announced that the V-22 would be fitted with a nose-mounted GAU-19 Gatling gun,[30] but the GAU-19 gun was later canceled.[31]
In 2000, there were two further fatal crashes, killing a total of 19 Marines, and the production was again halted while the cause of these crashes was investigated and various parts were redesigned.[32] The V-22 completed its final operational evaluation in June 2005. The evaluation was deemed successful; events included long range deployments, high altitude, desert and shipboard operations. The problems identified in various accidents had been addressed.[33]
Controversy
The V-22's development process has been long and controversial, partly due to its large cost increases.[34] When the development budget, first planned for $2.5 billion in 1986, increased to a projected $30 billion in 1988, then-Defense Secretary Dick Cheney tried to zero out its funding. He was eventually overruled by Congress.[32] As of 2008, $27 billion have been spent on the Osprey program and another $27.2 billion will be required to complete planned production numbers by the end of the program.[2]
The V-22 squadron's former commander at Marine Corps Air Station New River, Lt. Colonel Odin Lieberman, was relieved of duty in 2001 after allegations that he instructed his unit that they needed to falsify maintenance records to make the plane appear more reliable.[2][35] Three officers were later implicated in the falsification scandal.[34]
The aircraft is incapable of autorotation, and is therefore unable to land safely in helicopter mode if both engines fail. A director of the Pentagon's testing office in 2005 said that if the Osprey loses power while flying like a helicopter below 1,600 feet (490 m), emergency landings "are not likely to be survivable". But Captain Justin (Moon) McKinney, a V-22 pilot, says that this will not be a problem, "We can turn it into a plane and glide it down, just like a C-130".[31] A complete loss of power would require the failure of both engines, as a drive shaft connects the nacelles through the wing; one engine can power both proprotors.[36] While vortex ring state (VRS) contributed to a deadly V-22 accident, the aircraft is less susceptible to the condition than conventional helicopters and recovers more quickly.[5] The Marines now train new pilots in the recognition of and recovery from VRS and have instituted operational envelope limits and instrumentation to help pilots avoid VRS conditions.[32][37]
It was planned in 2000 to equip all V-22s with a nose-mounted Gatling gun, to provide "the V-22 with a strong defensive firepower capability to greatly increase the aircraft's survivability in hostile actions."[30] The nose gun project was canceled however, leading to criticism by retired Marine Corps Commandant General James L. Jones, who is not satisfied with the current V-22 armament.[31] A belly-mounted turret was later installed on some of the first V-22s sent to the War in Afghanistan in 2009.[38]
With the first combat deployment of the MV-22 in October 2007, Time Magazine ran an article condemning the aircraft as unsafe, overpriced, and completely inadequate.[31] The Marine Corps, however, responded with the assertion that much of the article's data were dated, obsolete, inaccurate, and reflected expectations that ran too high for any new field of aircraft.[39]
Recent development
On 28 September 2005, the Pentagon formally approved full-rate production for the V-22.[40] The plan is to boost production from 11 a year to between 24 and 48 a year by 2012. Of the 458 total planned, 360 are for the Marine Corps, 48 for the Navy, and 50 for the Air Force at an average cost of $110 million per aircraft, including development costs.[2] The V-22 had an incremental flyaway cost of $70 million per aircraft in 2007,[3] but the Navy hopes to shave about $10 million off that cost after a five-year production contract starts in 2008.[41]
The Bell-Boeing Joint Project Office in Amarillo, Texas will design a new integrated avionics processor to resolve electronics obsolescence issues and add new network capabilities.[42]
Design
The Osprey is the world's first production tiltrotor aircraft, with one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. It is classified as a powered lift aircraft by the Federal Aviation Administration.[43] For takeoff and landing, it typically operates as a helicopter with the nacelles vertical (rotors horizontal). Once airborne, the nacelles rotate forward 90° in as little as 12 seconds for horizontal flight, converting the V-22 to a more fuel-efficient, higher-speed turboprop airplane. STOL rolling-takeoff and landing capability is achieved by having the nacelles tilted forward up to 45°. For compact storage and transport, the V-22's wing rotates to align, front-to-back, with the fuselage. The proprotors can also fold in a sequence taking 90 seconds.[44]
Most Osprey missions will use fixed wing flight 75 percent or more of the time, reducing wear and tear on the aircraft and reducing operational costs.[45] This fixed wing flight is higher than typical helicopter missions allowing longer range line-of-sight communications and so improved command and control.[2] Boeing has stated the V-22 design loses 10% of its vertical lift over a Tiltwing design when operating in helicopter mode because of airflow resistance due to the wings, but that the Tiltrotor design has better short takeoff and landing performance.[46]
The V-22 is equipped with a glass cockpit, which incorporates four Multi-function displays (MFDs) and one shared Central Display Unit (CDU), allowing the pilots to display a variety of images including: digimaps centered or decentered on current position, FLIR imagery, primary flight instruments, navigation (TACAN, VOR, ILS, GPS, INS), and system status. The flight director panel of the Cockpit Management System (CMS) allows for fully-coupled (aka: autopilot) functions which will take the aircraft from forward flight into a 50-foot hover with no pilot interaction other than programming the system.[47] The glass cockpit of the canceled CH-46X was derived from the V-22.[48]
The V-22 is a fly-by-wire aircraft with triple-redundant flight control systems.[49] With the nacelles pointing straight up in conversion mode at 90° the flight computers command the aircraft to fly like a helicopter, with cyclic forces being applied to a conventional swashplate at the rotor hub. With the nacelles in airplane mode (0°) the flaperons, rudder, and elevator fly the aircraft like an airplane. This is a gradual transition and occurs over the rotation range of the nacelles. The lower the nacelles, the greater effect of the airplane-mode control surfaces.[50] The nacelles can rotate past vertical to 97.5° for rearward flight.[51][52]
The Osprey can be armed with one M240 7.62x51mm NATO (.308 in caliber) or M2 .50 in caliber (12.7 mm) machine gun on the loading ramp, that can be fired rearward when the ramp is lowered. A GAU-19 three-barrel .50 in gatling gun mounted below the V-22's nose has also been studied for future upgrade.[31][53] BAE Systems developed a remotely operated turreted weapons system for the V-22,[54] which was installed on half of the first V-22s deployed to Afghanistan in 2009.[38] The 7.62 mm belly gun turret is remotely operated by a gunner inside the aircraft, who acquires targets with a separate pod using color television and forward looking infrared imagery.
U.S. Naval Air Systems Command is working on upgrades to increase the maximum speed from 250 knots (460 km/h; 290 mph) to 270 knots (500 km/h; 310 mph), increase helicopter mode altitude limit from 10,000 feet (3,000 m) to 12,000 feet (3,700 m) or 14,000 feet (4,300 m), and increase lift performance.[55]
Operational history
US Marine Corps
Marine Corps crew training on the Osprey has been conducted by VMMT-204 since March 2000. On 3 June 2005, the Marine Corps helicopter squadron Marine Medium Helicopter 263 (HMM-263), stood down to begin the process of transitioning to the MV-22 Osprey.[56] On 8 December 2005, Lieutenant General Amos, commander of the II MEF, accepted the delivery of the first fleet of MV-22s, delivered to HMM-263. The unit reactivated on 3 March 2006 as the first MV-22 squadron and was redesignated VMM-263. On 31 August 2006, VMM-162 (the former HMM-162) followed suit. On 23 March 2007, HMM-266 became Marine Medium Tiltrotor Squadron 266 (VMM-266) at Marine Corps Air Station New River, North Carolina.[57]
The Osprey has been replacing existing CH-46 Sea Knight squadrons.[58] The MV-22 reached initial operational capability (IOC) with the U.S. Marine Corps on 13 June 2007.[1] On 10 July 2007 an MV-22 Osprey landed aboard the Royal Navy aircraft carrier, HMS Illustrious in the Atlantic Ocean. This marked the first time a V-22 had landed on any non-U.S. vessel.[59]
On 13 April 2007, the U.S. Marine Corps announced that it would be sending ten V-22 aircraft to Iraq, the Osprey's first combat deployment. Marine Corps Commandant, General James Conway, indicated that over 150 Marines would accompany the Osprey set for September deployment to Al-Asad Airfield.[60][61] On 17 September 2007, ten MV-22Bs of VMM-263 left for Iraq aboard the USS Wasp. The decision to use a ship rather than use the Osprey's self-deployment capability was made because of concerns over icing during the North Atlantic portion of the trip, lack of available KC-130s for mid-air refueling, and the availability of the USS Wasp.[62]
The Osprey has provided support in Iraq, racking up some 2,000 flight hours over three months with a mission capable availability rate of 68.1% as of late-January 2008.[63] They are primarily used in Iraq's western Anbar province for routine cargo and troop movements, and also for riskier "aero-scout" missions. General David Petraeus, the top U.S. military commander in Iraq, used one to fly around Iraq on Christmas Day 2007 to visit troops.[64] Then-presidential candidate Barack Obama also flew in Ospreys during his high profile 2008 tour of Iraq.[65]
The only major problem has been obtaining the necessary spare parts to maintain the aircraft.[66] The V-22 had flown 3,000 sorties totaling 5,200 hours in Iraq as of July 2008.[67] USMC leadership expect to deploy MV-22s to Afghanistan in 2009.[66][68] General George J. Trautman, III praised the increased range of the V-22 over the legacy helicopters in Iraq and said that "it turned his battle space from the size of Texas into the size of Rhode Island."[69]
Naval Air Systems Command has devised a temporary fix for sailors to place portable heat shields under Osprey engines to prevent damage to the decks of some of the Navy's smaller amphibious ships, but they determined that a long term solution to the problem would require these decks be redesigned with heat resistant deck coatings, passive thermal barriers and changes in ship structure in order to operate V-22s and F-35Bs.[70]
A Government Accountability Office study reported that by January 2009 the Marines had 12 MV-22s operating in Iraq and they managed to successfully complete all assigned missions. The same report found that the V-22 deployments had mission capable rates averaging 57% to 68% and an overall full mission capable rate of only 6%. It also stated that the aircraft had shown weakness in situational awareness, maintenance, shipboard operations and the ability to transport troops and external cargo.[71] That study also concluded that the "deployments confirmed that the V-22’s enhanced speed and range enable personnel and internal cargo to be transported faster and farther than is possible with the legacy helicopters it is replacing".[71]
The MV-22 saw its first offensive combat mission, Operation Cobra's Anger on 4 December 2009. Ospreys assisted in inserting 1,000 Marines and 150 Afghan troops into the Now Zad Valley of Helmand Province in southern Afghanistan to disrupt communication and supply lines of the Taliban.[38] In January 2010 the MV-22 Osprey is being sent to Haiti as part of Operation Unified Response relief efforts after the earthquake there. This will be the first use the Marine V-22 in a humanitarian mission.[72]
US Air Force
The Air Force's first operational CV-22 Osprey was delivered to the 58th Special Operations Wing (58th SOW) at Kirtland Air Force Base, New Mexico on 20 March 2006. This and subsequent aircraft will become part of the 58th SOW's fleet of aircraft used for training pilots and crew members for special operations use.[73] On 16 November 2006, the Air Force officially accepted the CV-22 in a ceremony conducted at Hurlburt Field, Florida.[74]
The US Air Force's first operational deployment of the Osprey sent four CV-22s to Mali in November 2008 in support of Exercise Flintlock. The CV-22s flew nonstop from Hurlburt Field, Florida with in-flight refueling.[5] AFSOC declared that the 8th Special Operations Squadron reached Initial Operational Capability on 16 March 2009, with six of its planned nine CV-22s operational.[75]
In June 2009, CV-22s of the 8th Special Operations Squadron delivered 43,000 pounds (20,000 kg) of humanitarian supplies to remote villages in Honduras that were not accessible by conventional vehicles.[76] In November 2009, the 8th SO Squadron and its six CV-22s returned from a three-month deployment in Iraq.[77]
The first possible combat loss of an Osprey occurred on 9 April, 2010, as a CV-22 went down near Qalat, Zabul Province, Afghanistan, killing four.[78][79]
Potential operators
In 1999 the V-22 was studied for use in the United Kingdom's Royal Navy,[80] it has been raised several times as a candidate for the role of Maritime Airborne Surveillance and Control (MASC).[81]
Israel had shown interest in the purchase of MV-22s, but no order was placed.[82][83] Flightglobal reported in late 2009 that Israel has decided to wait for the CH-53K instead.[84]
The V-22 Osprey is a candidate for the Norwegian All Weather Search and Rescue Helicopter (NAWSARH) that is planned to replace the Westland Sea King Mk.43B of the Royal Norwegian Air Force in 2015.[85] The other candidates for the NAWSARH contract of 10-12 helicopters are AgustaWestland AW101 Merlin, Eurocopter EC225, NHIndustries NH90 and Sikorsky S-92.[86]
Bell Boeing has made an unsolicited offer of the V-22 for US Army medical evacuation needs.[87] However the Joint Personnel Recovery Agency issued a report that said that a common helicopter design would be needed for both combat recovery and medical evacuation and that the V-22 would not be suitable for recovery missions because of the difficulty of hoist operations and lack of self-defense capabilities.[88]
The US Navy remains a potential user of the V-22, but its role and mission with the Navy remains unclear. The latest proposal is to replace the C-2 Greyhound with the V-22 in the fleet logistics role. The V-22 would have the advantage of being able to land on and support non-carriers with rapid delivery of supplies and people between the ships of a taskforce or to ships on patrol beyond helicopter range.[89] Loren B. Thompson of the Lexington Institute has suggested V-22s for use in combat search and rescue and Marine One VIP transport, which also need replacement aircraft.[90]
Variants
• V-22A
•• Pre-production full-scale development aircraft used for flight testing. These are unofficially considered A-variants after 1993 redesign.[91]
• HV-22
•• The U.S. Navy considered an HV-22 to provide combat search and rescue, delivery and retrieval of special warfare teams along with fleet logistic support transport. However, it chose the MH-60S for this role in 1992.[92]
• SV-22
•• The proposed anti-submarine warfare Navy variant. The Navy studied the SV-22 in the 1980s to replace S-3 and SH-2 aircraft.[93]
• MV-22B
•• Basic U.S. Marine Corps transport; original requirement for 552 (now 360). The Marine Corps is the lead service in the development of the V-22 Osprey. The Marine Corps variant, the MV-22B, is an assault transport for troops, equipment and supplies, capable of operating from ships or from expeditionary airfields ashore. It is replacing the Marine Corps' CH-46E[57] and CH-53D.[94]
• CV-22B
•• Air Force variant for the U.S. Special Operations Command (USSOCOM). It will conduct long-range, special operations missions, and is equipped with extra fuel tanks and terrain-following radar.[95][96]
Operators
•• 8th Special Operations Squadron (8 SOS) at Hurlburt Field, Florida
•• 71st Special Operations Squadron (71 SOS) at Kirtland Air Force Base, New Mexico
•• 20th Special Operations Squadron (20 SOS) at Cannon Air Force Base, New Mexico
•• VMM-161
•• VMM-162
•• VMM-261
•• VMM-263
•• VMM-264
•• VMM-266
•• VMM-365
•• VMMT-204 - Training squadron
•• VMX-22 - Marine Tiltrotor Operational Test and Evaluation Squadron
Notable accidents
Main article: Accidents and incidents involving the V-22 Osprey
From 1991 to 2000 there were four significant crashes, and a total of 30 fatalities, during testing.[32] Since becoming operational in 2007, the V-22 has had one possible combat loss due to an unknown cause, no losses due to accidents, and seven other notable, but minor, incidents.
• On 11 June 1991, a mis-wired flight control system led to two minor injuries when the left nacelle struck the ground while the aircraft was hovering 15 feet (4.6 m) in the air, causing it to bounce and catch fire.[97]
• On 20 July 1992, a leaking gearbox led to a fire in the right nacelle, causing the aircraft to drop into the Potomac River in front of an audience of Congressmen and other government officials at Quantico, killing all seven on board and grounding the aircraft for 11 months.[98]
• On 8 April 2000, a V-22 loaded with Marines to simulate a rescue, attempted to land at Marana Northwest Regional Airport in Arizona, stalled when its right rotor entered vortex ring state, rolled over, crashed, and exploded, killing all 19 on board.[37]
• On 11 December 2000, after a catastrophic hydraulic leak and subsequent software instrument failure, a V-22 fell 1,600 feet (490 m) into a forest in Jacksonville, North Carolina, killing all four aboard. This caused the Marine Corps to ground their fleet of eight V-22s, the second grounding that year.[99][100]
Specifications (MV-22B)
Data from Boeing Integrated Defense Systems,[101] Naval Air Systems Command,[102] US Air Force CV-22 fact sheet,[95] Norton,[103] and Bell[104]
General characteristics
• Crew: Four (pilot, copilot and two flight engineers)
• Capacity: 24 troops (seated), 32 troops (floor loaded) or up to 15,000 lb (6,800 kg) of cargo (dual hook)
• Length: 57 ft 4 in (17.5 m)
• Rotor diameter: 38 ft 0 in (11.6 m)
• Wingspan: 45 ft 10 in (14 m)
• Width with rotors: 84 ft 7 in (25.8 m)
• Height: 22 ft 1 in/6.73 m; overall with nacelles vertical (17 ft 11 in/5.5 m; at top of tailfins)
• Disc area: 2,268 ft² (212 m²)
• Wing area: 301.4 ft² (28 m²)
• Empty weight: 33,140 lb (15,032 kg)
• Loaded weight: 47,500 lb (21,500 kg)
• Max takeoff weight: 60,500 lb (27,400 kg)
• Powerplant: 2× Rolls-Royce Allison T406/AE 1107C-Liberty turboshafts, 6,150 hp (4,590 kW) each
Performance
• Maximum speed: 250 knots (460 km/h, 290 mph) at sea level / 305 kn (565 km/h; 351 mph) at 15,000 ft (4,600 m)[105]
• Cruise speed: 241 knots (277 mph, 446 km/h) at sea level
• Range: 879 nmi (1,011 mi, 1,627 km)
• Combat radius: 370 nmi (426 mi, 685 km)
• Ferry range: 1,940 nmi (with auxiliary internal fuel tanks)
• Service ceiling: 26,000 ft (7,925 m)
• Rate of climb: 2,320 ft/min (11.8 m/s)
• Disc loading: 20.9 lb/ft² at 47,500 lb GW (102.23 kg/m²)
• Power/mass: 0.259 hp/lb (427 W/kg)
Armament
• 1× M240 machine gun on ramp, optional
Notable appearances in media
Main article: Aircraft in fiction#V-22 Osprey
See also
• Elizabeth A. Okoreeh-Baah, USMC - first female to pilot a V-22 Osprey
Related development
Comparable aircraft
Related lists
• List of military aircraft of the United States
References
Bibliography
• Markman, Steve and Bill Holder. "Bell/Boeing V-22 Osprey Tilt-Engine VTOL Transport (U.S.A.)". Straight Up: A History of Vertical Flight. Schiffer Publishing, 2000. ISBN 0-7643-1204-9.
• Norton, Bill. Bell Boeing V-22 Osprey, Tiltrotor Tactical Transport. Midland Publishing, 2004. ISBN 1-85780-165-2.
External links
Wikimedia Commons has media related to: V-22 Osprey
• V-22 Osprey web, and www.history.navy.mil/planes/v-22.html
• CV-22 fact sheet on USAF site
• www.globalsecurity.org/military/systems/aircraft/v-22.htm
• www.airforce-technology.com/projects/osprey/
• "Flight of the Osprey", US Navy video of V-22 operations
Croome Court is a mid 18th century Neo-Palladian mansion surrounded by an extensive landscaped parkland at Croome D'Abitot, near Pershore in south Worcestershire. The mansion and park were designed by Lancelot "Capability" Brown for George Coventry, 6th Earl of Coventry, and was Brown's first landscape design and first major architectural project. Some of the internal rooms of the mansion were designed by Robert Adam.
The mansion house is owned by Croome Heritage Trust, and is leased to the National Trust who operate it, along with the surrounding parkland, as a tourist attraction. The National Trust own the surrounding parkland, which is also open to the public.
Location[edit]
Croome Court is located near to Croome D'Abitot, in Worcestershire,[1] near Pirton, Worcestershire.[2] The wider estate was established on lands that were once part of the royal forest of Horewell.[3] Traces of these older landscapes, such as unimproved commons and ancient woodlands, can be found across the former Croome Estate.[4]
House[edit]
Croome Court South Portico
History[edit]
The foundations and core of Croome Court, including the central chimney stack structure, date back to the early 1640s.[5] Substantial changes to this early house were made by Gilbert Coventry, 4th Earl of Coventry.[6]
In 1751, George Coventry, the 6th Earl, inherited the estate, along with the existing Jacobean house. He commissioned Lancelot "Capability" Brown, with the assistance of Sanderson Miller, to redesign the house and estate.[7][1] It was Brown's "first flight into the realms of architecture" and a "rare example of his architectural work",[8] and it is an important and seminal work.[9] It was built between 1751 and 1752, and it and Hagley Hall are considered to be the finest examples of Neo-Palladian architecture in Worcestershire. Notable Neo-Palladian features incorporated into Croome Court include the plain exterior and the corner towers with pyramidal roofs (a feature first used by Inigo Jones in the design of Wilton House in Wiltshire).[1] Robert Adam worked on the interior of the building from 1760 onwards.[10]
The house has been visited by George III,[2][11] as well as Queen Victoria[7] during summers when she was a child, and George V (then Duke of York).[11]
A jam factory was built by the 9th Earl of Coventry, near to Pershore railway station, in about 1880, to provide a market for Vale of Evesham fruit growers in times of surplus. Although the Croome connection with jam making had ceased, during the First World War, the building was leased by the Croome Estate Trust to the Huddersfield Fruit Preserving Company as a pulping station.[12]
The First World War deeply affected Croome, with many local casualties, although the house was not requisitioned for the war effort. This is possibly because it was the home of the Lord Lieutenant of the County, who needed a residence for his many official engagements.[13]
During the Second World War Croome Court was requisitioned by the Ministry of Works and leased for a year to the Dutch Government as a possible refuge for Queen Wilhelmina of the Netherlands; to escape the Nazi occupation of the Netherlands. However, evidence shows that they stayed two weeks at the most, perhaps because of the noise and fear created by the proximity of Defford Aerodrome. They later emigrated to Canada.[14]
In 1948 the Croome Estate Trust sold the Court, along with 38 acres (15 ha) of land, to the Roman Catholic Archdiocese of Birmingham, and the mansion became St Joseph's Special School, which was run by nuns[15] from 1950[11] until 1979.[15]
The house was listed on 11 August 1952; it is currently Grade I listed.[10]
In 1979 the hall was taken over by the International Society for Krishna Consciousness (Hare Krishna movement), who used it as their UK headquarters and a training college[16] called Chaitanya College,[15] run by 25 members of the movement.[16] During their tenure they repainted the Dining Room.[17] In 1984 they had to leave the estate for financial reasons. They held a festival at the hall in 2011.[16]
From 1984 onwards various owners tried to use the property as a training centre; apartments; a restaurant and conference centre; and a hotel and golf course,[15] before once more becoming a private family home,[2][15] with outbuildings converted to private houses.[15]
The house was purchased by the Croome Heritage Trust, a registered charity,[18] in October 2007,[19] and it is now managed by the National Trust as a tourist attraction. It opened to the public in September 2009, at which point six of the rooms had restored, costing £400,000, including the Saloon. It was estimated that another £4 million[2][20] to £4.8 million would be needed to restore the entire building. Fundraising activities for the restoration included a 2011 raffle for a Morgan sports car organised by Lord and Lady Flight. After the restoration is complete, a 999-year lease on the building will be granted to the National Trust.[21] An oral history project to record recollections about Croome was funded by the Heritage Lottery Fund.[15] As of 2009, the service wing was empty and in need of substantial repair.[22]
Exterior[edit]
The mansion is faced with Bath stone,[7] limestone ashlar, and has both north and south facing fronts. It has a basement and two stories, with three stories in the end pavilions. A slate roof, with pyramid roofs over the corner towers, tops the building, along with three pair-linked chimneys along the axis of the house.[10]
Both fronts have 11 bays, split into three central sets of three each, and one additional bay each side. The north face has a pedimented centre, with two balustraded staircases leading to a Roman Doric doorcase. The south face has a projecting Ionic tetrastyle portico and Venetian windows. It has a broad staircase, with cast stone sphinxes on each side, leading to a south door topped with a cornice on consoles. The wings have modillion cornice and balustrade.[10]
A two-story L-shaped service wing is attached to the east side of the mansion. It is made of red brick and stone, with slate roofs.[10] It was designed by Capability Brown in 1751-2.[22] On the far side of the service wing, a wall connects it to a stable court.[10]
Interior[edit]
The interior of the house was designed partially by Capability Brown, with plasterwork by G. Vassalli, and partially by Robert Adam, with plasterwork by J. Rose Jr. It has a central spine corridor. A stone staircase, with iron balusters, is at the east end.[10]
The entrance hall is on the north side of the building, and has four fluted Doric columns, along with moulded doorcases. To the east of the entrance hall is the dining room, which has a plaster ceiling and cornice, while to the west is a billiard room, featuring fielded panelling, a plaster cornice, and a rococo fireplace. The three rooms were probably decorated around 1758-59 by Capability Brown.[10] The dining room was vibrantly repainted by the Hare Krishnas in the 1970s-80s.[17]
The central room on the south side is a saloon, probably by Brown and Vassalli. It has an elaborate ceiling, with three panels, deep coving, and a cornice, along with two Ionic fireplaces, and Palladian doorcases.[10] George III was entertained by George Coventry, the 6th Earl, in the house's Saloon.[2] A drawing room is to the west of the saloon, and features rococo plasterwork and a marble fireplace.[10]
To the east of the saloon is the Tapestry Room.[10] This was designed in 1763-71, based on a design by Robert Adam, and contained tapestries and furniture covers possibly designed by Jacques Germain Soufflot, and made by Manufacture Nationale des Gobelins.[23] Around 1902 the ninth Earl sold the tapestries and seating to a Parisian dealer. In 1949 the Samuel H. Kress Foundation purchased the ceiling, floor, mantlepiece, chair rails, doors and the door surrounds, which were donated to the Metropolitan Museum of Art, New York, in 1958. In 1959 the Kress Foundation also helped the Metropolitan Museum acquire the chair and sofa frames, which they recovered using the original tapestry seats.[7][23] A copy of the ceiling was installed in place of the original.[10] As of 2016, the room is displayed as it would have looked after the tapestries had been sold, with a jug and ewer on display as the only original decoration of the room that remains in it. The adjacent library room is used to explain what happened to the tapestry room;[17] the former library was designed by Adam, and was dismantled except for the marble fireplace.[10]
At the west side of the building is a long gallery,[10] which was designed by Robert Adam and installed between 1761 and 1766. It is the best preserved of the original interior (little of the rest has survived in situ).[1] It has an octagonal panelled ceiling, and plaster reliefs of griffins. A half-hexagonal bay faces the garden. The room also contains a marble caryatid fireplace designed by J Wilton.[10] As of 2016, modern sculptures are displayed in empty niches along the Long Gallery
wikipedia
Delivering the capability to image nanostructures and chemical reactions down to nanometer resolution requires a new class of x-ray microscope that can perform precision microscopy experiments using ultra-bright x-rays from the National Synchrotron Light Source II (NSLS-II) at Brookhaven National Laboratory. This groundbreaking instrument, designed to deliver a suite of unprecedented x-ray imaging capabilities for the Hard X-ray Nanoprobe (HXN) beamline, brings researchers one step closer to the ultimate goal of nanometer resolution at NSLS-II.
The microscope manipulates novel nanofocusing optics called multilayer Laue lenses (MLL) — incredibly precise lenses grown one atomic layer at a time — which produce a tiny x-ray beam that is currently about 10 nanometers in size. Focusing an x-ray beam to that level means being able to see the structures on that length scale, whether they are proteins in a biological sample, or the inner workings of a fuel cell catalyst.
Pictured: microscope designers Yong Chu and Evgeny Nazaretski.
Pasted from Wikipedia: Bell-Boeing V-22 Osprey
• • • • •
The Bell-Boeing V-22 Osprey is a multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The V-22 originated from the U.S. Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. It was developed jointly by the Bell Helicopter, and Boeing Helicopters team, known as Bell Boeing, which produce the aircraft.[4] The V-22 first flew in 1989, and began years of flight testing and design alterations.
The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007. The Osprey's other operator, the U.S. Air Force fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed for combat operations in Iraq and Afghanistan.
Contents
•• 1.2 Flight testing and design changes
• 2 Design
• 8 Notable appearances in media
Development
Early development
The failure of the Iran hostage rescue mission in 1980 demonstrated to the United States military a need[5] for "a new type of aircraft, that could not only take off and land vertically but also could carry combat troops, and do so at speed."[6] The U.S. Department of Defense began the Joint-service Vertical take-off/landing Experimental (JVX) aircraft program in 1981, under U.S. Army leadership. Later the U.S. Navy/Marine Corps took the lead.[7][8] The JVX combined requirements from the Marine Corps, Air Force, Army and Navy.[9][10] A request for proposals (RFP) was issued in December 1982 for JVX preliminary design work. Interest in the program was expressed by Aérospatiale, Bell Helicopter, Boeing Vertol, Grumman, Lockheed, and Westland. The DoD pushed for contractors to form teams. Bell partnered with Boeing Vertol. The Bell Boeing team submitted a proposal for a enlarged version of the Bell XV-15 prototype on 17 February 1983. This was the only proposal received and a preliminary design contract was awarded on 26 April 1983.[11][12]
The JVX aircraft was designated V-22 Osprey on 15 January 1985; by March that same year the first six prototypes were being produced, and Boeing Vertol was expanded to deal with the project workload.[13][14] Work has been split evenly between Bell and Boeing. Bell Helicopter manufactures and integrates the wing, nacelles, rotors, drive system, tail surfaces, and aft ramp, as well as integrates the Rolls-Royce engines and performs final assembly. Boeing Helicopters manufactures and integrates the fuselage, cockpit, avionics, and flight controls.[4][15] The USMC variant of the Osprey received the MV-22 designation and the Air Force variant received CV-22; reversed from normal procedure to prevent Marine Ospreys from having a conflicting designation with aircraft carriers (CV).[16] Full-scale development of the V-22 tilt-rotor aircraft began in 1986.[2] On 3 May 1986 the Bell-Boeing partnership was awarded a $1.714 billion contract for V-22 aircraft by the Navy, thus at this point the project had acquisition plans with all four arms of the U.S. military.[17]
The first V-22 was rolled out with significant media attention in May 1988.[18][19] However the project suffered several political blows. Firstly in the same year, the Army left the program, citing a need to focus its budget on more immediate aviation programs.[20] The project also faced considerable dialogue in the Senate, surviving two votes that both could have resulted in cancellation.[21][22] Despite the Senate's decision, the Department of Defense instructed the Navy not to spend more money on the Osprey.[23] At the same time, the Bush administration sought the cancellation of the project.[23]
Flight testing and design changes
The first of six MV-22 prototypes first flew on 19 March 1989 in the helicopter mode,[24] and on 14 September 1989 as a fixed-wing plane.[25] The third and fourth prototypes successfully completed the Osprey's first Sea Trials on the USS Wasp in December 1990.[26] However, the fourth and fifth prototypes crashed in 1991-92.[27] Flight tests were resumed in August 1993 after changes were incorporated in the prototypes.[2] From October 1992 until April 1993, Bell and Boeing redesigned the V-22 to reduce empty weight, simplify manufacture and reduce production costs. This redesigned version became the B-model.[28]
Flight testing of four full-scale development V-22s began in early 1997 when the first pre-production V-22 was delivered to the Naval Air Warfare Test Center, Naval Air Station Patuxent River, Maryland. The first EMD flight took place on 5 February 1997. The first of four low rate initial production aircraft, ordered on 28 April 1997, was delivered on 27 May 1999. Osprey number 10 completed the program's second Sea Trials, this time from the USS Saipan in January 1999.[2] During external load testing in April 1999, Boeing used a V-22 to lift and transport the M777 howitzer.[29] In 2000, Boeing announced that the V-22 would be fitted with a nose-mounted GAU-19 Gatling gun,[30] but the GAU-19 gun was later canceled.[31]
In 2000, there were two further fatal crashes, killing a total of 19 Marines, and the production was again halted while the cause of these crashes was investigated and various parts were redesigned.[32] The V-22 completed its final operational evaluation in June 2005. The evaluation was deemed successful; events included long range deployments, high altitude, desert and shipboard operations. The problems identified in various accidents had been addressed.[33]
Controversy
The V-22's development process has been long and controversial, partly due to its large cost increases.[34] When the development budget, first planned for $2.5 billion in 1986, increased to a projected $30 billion in 1988, then-Defense Secretary Dick Cheney tried to zero out its funding. He was eventually overruled by Congress.[32] As of 2008, $27 billion have been spent on the Osprey program and another $27.2 billion will be required to complete planned production numbers by the end of the program.[2]
The V-22 squadron's former commander at Marine Corps Air Station New River, Lt. Colonel Odin Lieberman, was relieved of duty in 2001 after allegations that he instructed his unit that they needed to falsify maintenance records to make the plane appear more reliable.[2][35] Three officers were later implicated in the falsification scandal.[34]
The aircraft is incapable of autorotation, and is therefore unable to land safely in helicopter mode if both engines fail. A director of the Pentagon's testing office in 2005 said that if the Osprey loses power while flying like a helicopter below 1,600 feet (490 m), emergency landings "are not likely to be survivable". But Captain Justin (Moon) McKinney, a V-22 pilot, says that this will not be a problem, "We can turn it into a plane and glide it down, just like a C-130".[31] A complete loss of power would require the failure of both engines, as a drive shaft connects the nacelles through the wing; one engine can power both proprotors.[36] While vortex ring state (VRS) contributed to a deadly V-22 accident, the aircraft is less susceptible to the condition than conventional helicopters and recovers more quickly.[5] The Marines now train new pilots in the recognition of and recovery from VRS and have instituted operational envelope limits and instrumentation to help pilots avoid VRS conditions.[32][37]
It was planned in 2000 to equip all V-22s with a nose-mounted Gatling gun, to provide "the V-22 with a strong defensive firepower capability to greatly increase the aircraft's survivability in hostile actions."[30] The nose gun project was canceled however, leading to criticism by retired Marine Corps Commandant General James L. Jones, who is not satisfied with the current V-22 armament.[31] A belly-mounted turret was later installed on some of the first V-22s sent to the War in Afghanistan in 2009.[38]
With the first combat deployment of the MV-22 in October 2007, Time Magazine ran an article condemning the aircraft as unsafe, overpriced, and completely inadequate.[31] The Marine Corps, however, responded with the assertion that much of the article's data were dated, obsolete, inaccurate, and reflected expectations that ran too high for any new field of aircraft.[39]
Recent development
On 28 September 2005, the Pentagon formally approved full-rate production for the V-22.[40] The plan is to boost production from 11 a year to between 24 and 48 a year by 2012. Of the 458 total planned, 360 are for the Marine Corps, 48 for the Navy, and 50 for the Air Force at an average cost of $110 million per aircraft, including development costs.[2] The V-22 had an incremental flyaway cost of $70 million per aircraft in 2007,[3] but the Navy hopes to shave about $10 million off that cost after a five-year production contract starts in 2008.[41]
The Bell-Boeing Joint Project Office in Amarillo, Texas will design a new integrated avionics processor to resolve electronics obsolescence issues and add new network capabilities.[42]
Design
The Osprey is the world's first production tiltrotor aircraft, with one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. It is classified as a powered lift aircraft by the Federal Aviation Administration.[43] For takeoff and landing, it typically operates as a helicopter with the nacelles vertical (rotors horizontal). Once airborne, the nacelles rotate forward 90° in as little as 12 seconds for horizontal flight, converting the V-22 to a more fuel-efficient, higher-speed turboprop airplane. STOL rolling-takeoff and landing capability is achieved by having the nacelles tilted forward up to 45°. For compact storage and transport, the V-22's wing rotates to align, front-to-back, with the fuselage. The proprotors can also fold in a sequence taking 90 seconds.[44]
Most Osprey missions will use fixed wing flight 75 percent or more of the time, reducing wear and tear on the aircraft and reducing operational costs.[45] This fixed wing flight is higher than typical helicopter missions allowing longer range line-of-sight communications and so improved command and control.[2] Boeing has stated the V-22 design loses 10% of its vertical lift over a Tiltwing design when operating in helicopter mode because of airflow resistance due to the wings, but that the Tiltrotor design has better short takeoff and landing performance.[46]
The V-22 is equipped with a glass cockpit, which incorporates four Multi-function displays (MFDs) and one shared Central Display Unit (CDU), allowing the pilots to display a variety of images including: digimaps centered or decentered on current position, FLIR imagery, primary flight instruments, navigation (TACAN, VOR, ILS, GPS, INS), and system status. The flight director panel of the Cockpit Management System (CMS) allows for fully-coupled (aka: autopilot) functions which will take the aircraft from forward flight into a 50-foot hover with no pilot interaction other than programming the system.[47] The glass cockpit of the canceled CH-46X was derived from the V-22.[48]
The V-22 is a fly-by-wire aircraft with triple-redundant flight control systems.[49] With the nacelles pointing straight up in conversion mode at 90° the flight computers command the aircraft to fly like a helicopter, with cyclic forces being applied to a conventional swashplate at the rotor hub. With the nacelles in airplane mode (0°) the flaperons, rudder, and elevator fly the aircraft like an airplane. This is a gradual transition and occurs over the rotation range of the nacelles. The lower the nacelles, the greater effect of the airplane-mode control surfaces.[50] The nacelles can rotate past vertical to 97.5° for rearward flight.[51][52]
The Osprey can be armed with one M240 7.62x51mm NATO (.308 in caliber) or M2 .50 in caliber (12.7 mm) machine gun on the loading ramp, that can be fired rearward when the ramp is lowered. A GAU-19 three-barrel .50 in gatling gun mounted below the V-22's nose has also been studied for future upgrade.[31][53] BAE Systems developed a remotely operated turreted weapons system for the V-22,[54] which was installed on half of the first V-22s deployed to Afghanistan in 2009.[38] The 7.62 mm belly gun turret is remotely operated by a gunner inside the aircraft, who acquires targets with a separate pod using color television and forward looking infrared imagery.
U.S. Naval Air Systems Command is working on upgrades to increase the maximum speed from 250 knots (460 km/h; 290 mph) to 270 knots (500 km/h; 310 mph), increase helicopter mode altitude limit from 10,000 feet (3,000 m) to 12,000 feet (3,700 m) or 14,000 feet (4,300 m), and increase lift performance.[55]
Operational history
US Marine Corps
Marine Corps crew training on the Osprey has been conducted by VMMT-204 since March 2000. On 3 June 2005, the Marine Corps helicopter squadron Marine Medium Helicopter 263 (HMM-263), stood down to begin the process of transitioning to the MV-22 Osprey.[56] On 8 December 2005, Lieutenant General Amos, commander of the II MEF, accepted the delivery of the first fleet of MV-22s, delivered to HMM-263. The unit reactivated on 3 March 2006 as the first MV-22 squadron and was redesignated VMM-263. On 31 August 2006, VMM-162 (the former HMM-162) followed suit. On 23 March 2007, HMM-266 became Marine Medium Tiltrotor Squadron 266 (VMM-266) at Marine Corps Air Station New River, North Carolina.[57]
The Osprey has been replacing existing CH-46 Sea Knight squadrons.[58] The MV-22 reached initial operational capability (IOC) with the U.S. Marine Corps on 13 June 2007.[1] On 10 July 2007 an MV-22 Osprey landed aboard the Royal Navy aircraft carrier, HMS Illustrious in the Atlantic Ocean. This marked the first time a V-22 had landed on any non-U.S. vessel.[59]
On 13 April 2007, the U.S. Marine Corps announced that it would be sending ten V-22 aircraft to Iraq, the Osprey's first combat deployment. Marine Corps Commandant, General James Conway, indicated that over 150 Marines would accompany the Osprey set for September deployment to Al-Asad Airfield.[60][61] On 17 September 2007, ten MV-22Bs of VMM-263 left for Iraq aboard the USS Wasp. The decision to use a ship rather than use the Osprey's self-deployment capability was made because of concerns over icing during the North Atlantic portion of the trip, lack of available KC-130s for mid-air refueling, and the availability of the USS Wasp.[62]
The Osprey has provided support in Iraq, racking up some 2,000 flight hours over three months with a mission capable availability rate of 68.1% as of late-January 2008.[63] They are primarily used in Iraq's western Anbar province for routine cargo and troop movements, and also for riskier "aero-scout" missions. General David Petraeus, the top U.S. military commander in Iraq, used one to fly around Iraq on Christmas Day 2007 to visit troops.[64] Then-presidential candidate Barack Obama also flew in Ospreys during his high profile 2008 tour of Iraq.[65]
The only major problem has been obtaining the necessary spare parts to maintain the aircraft.[66] The V-22 had flown 3,000 sorties totaling 5,200 hours in Iraq as of July 2008.[67] USMC leadership expect to deploy MV-22s to Afghanistan in 2009.[66][68] General George J. Trautman, III praised the increased range of the V-22 over the legacy helicopters in Iraq and said that "it turned his battle space from the size of Texas into the size of Rhode Island."[69]
Naval Air Systems Command has devised a temporary fix for sailors to place portable heat shields under Osprey engines to prevent damage to the decks of some of the Navy's smaller amphibious ships, but they determined that a long term solution to the problem would require these decks be redesigned with heat resistant deck coatings, passive thermal barriers and changes in ship structure in order to operate V-22s and F-35Bs.[70]
A Government Accountability Office study reported that by January 2009 the Marines had 12 MV-22s operating in Iraq and they managed to successfully complete all assigned missions. The same report found that the V-22 deployments had mission capable rates averaging 57% to 68% and an overall full mission capable rate of only 6%. It also stated that the aircraft had shown weakness in situational awareness, maintenance, shipboard operations and the ability to transport troops and external cargo.[71] That study also concluded that the "deployments confirmed that the V-22’s enhanced speed and range enable personnel and internal cargo to be transported faster and farther than is possible with the legacy helicopters it is replacing".[71]
The MV-22 saw its first offensive combat mission, Operation Cobra's Anger on 4 December 2009. Ospreys assisted in inserting 1,000 Marines and 150 Afghan troops into the Now Zad Valley of Helmand Province in southern Afghanistan to disrupt communication and supply lines of the Taliban.[38] In January 2010 the MV-22 Osprey is being sent to Haiti as part of Operation Unified Response relief efforts after the earthquake there. This will be the first use the Marine V-22 in a humanitarian mission.[72]
US Air Force
The Air Force's first operational CV-22 Osprey was delivered to the 58th Special Operations Wing (58th SOW) at Kirtland Air Force Base, New Mexico on 20 March 2006. This and subsequent aircraft will become part of the 58th SOW's fleet of aircraft used for training pilots and crew members for special operations use.[73] On 16 November 2006, the Air Force officially accepted the CV-22 in a ceremony conducted at Hurlburt Field, Florida.[74]
The US Air Force's first operational deployment of the Osprey sent four CV-22s to Mali in November 2008 in support of Exercise Flintlock. The CV-22s flew nonstop from Hurlburt Field, Florida with in-flight refueling.[5] AFSOC declared that the 8th Special Operations Squadron reached Initial Operational Capability on 16 March 2009, with six of its planned nine CV-22s operational.[75]
In June 2009, CV-22s of the 8th Special Operations Squadron delivered 43,000 pounds (20,000 kg) of humanitarian supplies to remote villages in Honduras that were not accessible by conventional vehicles.[76] In November 2009, the 8th SO Squadron and its six CV-22s returned from a three-month deployment in Iraq.[77]
The first possible combat loss of an Osprey occurred on 9 April, 2010, as a CV-22 went down near Qalat, Zabul Province, Afghanistan, killing four.[78][79]
Potential operators
In 1999 the V-22 was studied for use in the United Kingdom's Royal Navy,[80] it has been raised several times as a candidate for the role of Maritime Airborne Surveillance and Control (MASC).[81]
Israel had shown interest in the purchase of MV-22s, but no order was placed.[82][83] Flightglobal reported in late 2009 that Israel has decided to wait for the CH-53K instead.[84]
The V-22 Osprey is a candidate for the Norwegian All Weather Search and Rescue Helicopter (NAWSARH) that is planned to replace the Westland Sea King Mk.43B of the Royal Norwegian Air Force in 2015.[85] The other candidates for the NAWSARH contract of 10-12 helicopters are AgustaWestland AW101 Merlin, Eurocopter EC225, NHIndustries NH90 and Sikorsky S-92.[86]
Bell Boeing has made an unsolicited offer of the V-22 for US Army medical evacuation needs.[87] However the Joint Personnel Recovery Agency issued a report that said that a common helicopter design would be needed for both combat recovery and medical evacuation and that the V-22 would not be suitable for recovery missions because of the difficulty of hoist operations and lack of self-defense capabilities.[88]
The US Navy remains a potential user of the V-22, but its role and mission with the Navy remains unclear. The latest proposal is to replace the C-2 Greyhound with the V-22 in the fleet logistics role. The V-22 would have the advantage of being able to land on and support non-carriers with rapid delivery of supplies and people between the ships of a taskforce or to ships on patrol beyond helicopter range.[89] Loren B. Thompson of the Lexington Institute has suggested V-22s for use in combat search and rescue and Marine One VIP transport, which also need replacement aircraft.[90]
Variants
• V-22A
•• Pre-production full-scale development aircraft used for flight testing. These are unofficially considered A-variants after 1993 redesign.[91]
• HV-22
•• The U.S. Navy considered an HV-22 to provide combat search and rescue, delivery and retrieval of special warfare teams along with fleet logistic support transport. However, it chose the MH-60S for this role in 1992.[92]
• SV-22
•• The proposed anti-submarine warfare Navy variant. The Navy studied the SV-22 in the 1980s to replace S-3 and SH-2 aircraft.[93]
• MV-22B
•• Basic U.S. Marine Corps transport; original requirement for 552 (now 360). The Marine Corps is the lead service in the development of the V-22 Osprey. The Marine Corps variant, the MV-22B, is an assault transport for troops, equipment and supplies, capable of operating from ships or from expeditionary airfields ashore. It is replacing the Marine Corps' CH-46E[57] and CH-53D.[94]
• CV-22B
•• Air Force variant for the U.S. Special Operations Command (USSOCOM). It will conduct long-range, special operations missions, and is equipped with extra fuel tanks and terrain-following radar.[95][96]
Operators
•• 8th Special Operations Squadron (8 SOS) at Hurlburt Field, Florida
•• 71st Special Operations Squadron (71 SOS) at Kirtland Air Force Base, New Mexico
•• 20th Special Operations Squadron (20 SOS) at Cannon Air Force Base, New Mexico
•• VMM-161
•• VMM-162
•• VMM-261
•• VMM-263
•• VMM-264
•• VMM-266
•• VMM-365
•• VMMT-204 - Training squadron
•• VMX-22 - Marine Tiltrotor Operational Test and Evaluation Squadron
Notable accidents
Main article: Accidents and incidents involving the V-22 Osprey
From 1991 to 2000 there were four significant crashes, and a total of 30 fatalities, during testing.[32] Since becoming operational in 2007, the V-22 has had one possible combat loss due to an unknown cause, no losses due to accidents, and seven other notable, but minor, incidents.
• On 11 June 1991, a mis-wired flight control system led to two minor injuries when the left nacelle struck the ground while the aircraft was hovering 15 feet (4.6 m) in the air, causing it to bounce and catch fire.[97]
• On 20 July 1992, a leaking gearbox led to a fire in the right nacelle, causing the aircraft to drop into the Potomac River in front of an audience of Congressmen and other government officials at Quantico, killing all seven on board and grounding the aircraft for 11 months.[98]
• On 8 April 2000, a V-22 loaded with Marines to simulate a rescue, attempted to land at Marana Northwest Regional Airport in Arizona, stalled when its right rotor entered vortex ring state, rolled over, crashed, and exploded, killing all 19 on board.[37]
• On 11 December 2000, after a catastrophic hydraulic leak and subsequent software instrument failure, a V-22 fell 1,600 feet (490 m) into a forest in Jacksonville, North Carolina, killing all four aboard. This caused the Marine Corps to ground their fleet of eight V-22s, the second grounding that year.[99][100]
Specifications (MV-22B)
Data from Boeing Integrated Defense Systems,[101] Naval Air Systems Command,[102] US Air Force CV-22 fact sheet,[95] Norton,[103] and Bell[104]
General characteristics
• Crew: Four (pilot, copilot and two flight engineers)
• Capacity: 24 troops (seated), 32 troops (floor loaded) or up to 15,000 lb (6,800 kg) of cargo (dual hook)
• Length: 57 ft 4 in (17.5 m)
• Rotor diameter: 38 ft 0 in (11.6 m)
• Wingspan: 45 ft 10 in (14 m)
• Width with rotors: 84 ft 7 in (25.8 m)
• Height: 22 ft 1 in/6.73 m; overall with nacelles vertical (17 ft 11 in/5.5 m; at top of tailfins)
• Disc area: 2,268 ft² (212 m²)
• Wing area: 301.4 ft² (28 m²)
• Empty weight: 33,140 lb (15,032 kg)
• Loaded weight: 47,500 lb (21,500 kg)
• Max takeoff weight: 60,500 lb (27,400 kg)
• Powerplant: 2× Rolls-Royce Allison T406/AE 1107C-Liberty turboshafts, 6,150 hp (4,590 kW) each
Performance
• Maximum speed: 250 knots (460 km/h, 290 mph) at sea level / 305 kn (565 km/h; 351 mph) at 15,000 ft (4,600 m)[105]
• Cruise speed: 241 knots (277 mph, 446 km/h) at sea level
• Range: 879 nmi (1,011 mi, 1,627 km)
• Combat radius: 370 nmi (426 mi, 685 km)
• Ferry range: 1,940 nmi (with auxiliary internal fuel tanks)
• Service ceiling: 26,000 ft (7,925 m)
• Rate of climb: 2,320 ft/min (11.8 m/s)
• Disc loading: 20.9 lb/ft² at 47,500 lb GW (102.23 kg/m²)
• Power/mass: 0.259 hp/lb (427 W/kg)
Armament
• 1× M240 machine gun on ramp, optional
Notable appearances in media
Main article: Aircraft in fiction#V-22 Osprey
See also
• Elizabeth A. Okoreeh-Baah, USMC - first female to pilot a V-22 Osprey
Related development
Comparable aircraft
Related lists
• List of military aircraft of the United States
References
Bibliography
• Markman, Steve and Bill Holder. "Bell/Boeing V-22 Osprey Tilt-Engine VTOL Transport (U.S.A.)". Straight Up: A History of Vertical Flight. Schiffer Publishing, 2000. ISBN 0-7643-1204-9.
• Norton, Bill. Bell Boeing V-22 Osprey, Tiltrotor Tactical Transport. Midland Publishing, 2004. ISBN 1-85780-165-2.
External links
Wikimedia Commons has media related to: V-22 Osprey
• V-22 Osprey web, and www.history.navy.mil/planes/v-22.html
• CV-22 fact sheet on USAF site
• www.globalsecurity.org/military/systems/aircraft/v-22.htm
• www.airforce-technology.com/projects/osprey/
• "Flight of the Osprey", US Navy video of V-22 operations
+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
The English Electric Lightning was a supersonic jet fighter aircraft of the Cold War era, noted for its great speed. It was the only all-British Mach 2 fighter aircraft and the first aircraft in the world capable of supercruise. The Lightning was renowned for its capabilities as an interceptor; pilots commonly described it as "being saddled to a skyrocket". Following English Electric's integration into the unified British Aircraft Corporation, the aircraft was marketed as the BAC Lightning.
The Lightning was prominently used by the Royal Air Force, but also by Saudi Arabia, Kuwait and Singapore. The first aircraft to enter service with the RAF, three pre-production P.1Bs, arrived at RAF Coltishall in Norfolk on 23 December 1959, and from there the aircraft was permanently developed further.
The F.6 was the ultimate Lightning version to see British service. Originally, it was nearly identical to the former F.3A (which introduced a large ventral tank and new cambered wings), with the exception that it had provisions to carry 260 gal (1,180 l) ferry tanks on pylons over the wings. These tanks were jettisonable in an emergency, and gave the F.6 a substantially improved deployment capability. The Ferranti A.I.23B radar supported autonomous search, automatic target tracking, and ranging for all weapons, while the pilot attack sight provided gyroscopically derived lead angle and backup stadiametric ranging for gun firing. The radar and gunsight were collectively designated the AIRPASS: Airborne Interception Radar and Pilot Attack Sight System. Combined with the Red Top missile, the system offered a limited forward hemisphere attack capability.
There remained one glaring shortcoming of the late Lightning versions, though: the lack of cannon. This was finally rectified in the form of a modified ventral tank with two ADEN cannon mounted in the front. The addition of the cannon and their ammunition decreased the tank's fuel capacity from 610 gal to 535 gal (2,430 l), but the cannon made the F.6 a 'real fighter' again.
Singapore's Lightnings came as a bargain, as they had been taken over directly from RAF stocks. In 1967 No. 74 'Tiger' Squadron was moved to RAF Tengah in Singapore to take over the air defense role from the Gloster Javelin equipped 64 Squadron. When 74 Squadron was disbanded in September 1971, following the withdrawal of British forces from Singapore (in the course of the "East of Suez" campaign, which already started in 1968), Tengah Air Base and many other RAF sites like Seletar, Sembawang and Changi as well as the RAF air defense radar station and Bloodhound II surface-to-air missiles were handed over to the SADC, Singapore’s Air Defense Command, which was suddenly entrusted with a huge responsibility and resources.
Anyway, in order to fulfill its aerial defense role, Singapore's air force lacked a potent interceptor, and so it was agreed with the RAF that 74 Squadron would leave fourteen Lightnings (twelve F.6 fighters and two T.5 trainers behind, while the rest was transferred to Akrotiri, Cyprus, where the RAF aircraft were integrated into 56 Squadron.
The ex-RAF Lightnings, however, immediately formed the small country's quick alert interceptor backbone and were grouped into the newly established 139th Squadron, “Swifts”. The small squadron kept its base at Tengah, as a sister unit to 140th Squadron which operated the Hawker Hunter FGA.74 in the fighter role since 1971.
Singapore's Lightnings differed slightly from the RAF F.6: In order to minimize the maintenance costs of this specialized aircraft, the SADC decided to drop the Red Top missile armament. The Red Top gave all-weather capability, but operating this standalone system for just a dozen of aircraft was deemed cost-inefficient. Keeping the high-performance Lightnings airworthy was already costly and demanding enough.
As a cost-effective measure, all SADC Lightnings were modified to carry four AIM-9B and later E Sidewinder AAMs on special, Y-shaped pylons, not unlike those used on the US Navy's F-8 Crusader. In order to enhance all-weather capability, an AAS-15 IRST sensor was added, located in a fairing in front of the wind shield. Its electronics used the space of the omitted, fuselage-mounted cannons of the F.6 variant.
Long range and loitering time were only of secondary relevance, so that the Singaporean Lightnings typically carried two 30 mm ADEN cannons with 120 RPG in the lower fuselage, which reduced the internal fuel capacity slightly but made the Lightning a true close combat fighter with high agility, speed and rate of climb. Since the RSAF interceptors would only engage in combat after direct visual contact and target identification, the Sidewinders' short range was no operational problem - and because that missile type was also in use with RSAF's Hawker Hunters, this solution was very cost-efficient.
The F.6's ability to carry the overwing ferry tanks (the so-called 'Overburgers') was retained, though, as well as the refueling probe and, and with its modified/updated avionics the RSAF Lightnings received the local designations of F.6S and T.5S. They were exclusively used in the interceptor role and retained their natural metal finish all though their service career.
In 1975, the SADC was eventually renamed into ‘Republic of Singapore Air Force’ (RSAF), and the aircraft received appropriate markings.
The RSAF Lightnings saw an uneventful career. One aircraft was lost due to hydraulic failure in August 1979 (the pilot ejected safely), and when in 1983 RSAF's F-5S fighters took over the duties of airborne interception from the Royal Australian Air Force's Mirage IIIOs detachment stationed at Tengah, all remaining RSAF Lightnings were retired and phased out of service in March 1984 and scrapped. The type's global career did not last much longer: the last RAF Lightnings were retired in 1988 and replaced by the Panavia Tornado ADV.
BAE Lightning F.6S general characteristics
Crew: 1
Length: 55 ft 3 in (16.8 m)
Wingspan: 34 ft 10 in (10.6 m)
Height: 19 ft 7 in (5.97 m)
Wing area: 474.5 ft² (44.08 m²)
Empty weight: 31,068 lb (14.092 kg)
Max. take-off weight: 45,750 lb (20.752 kg)
Powerplant:
2× Rolls-Royce Avon 301R afterburning turbojets with 12,530 lbf (55.74 kN) dry thrust each and 16,000 lbf (71.17 kN) with afterburner
Performance:
Maximum speed: Mach 2.0 (1.300 mph/2.100 km/h) at 36.000 ft.
Range: 850 mi (1.370 km) Supersonic intercept radius: 155 mi (250 km)
Ferry range: 920 mi (800 NM/ 1.660 km) 1,270 mi (1.100 NM/ 2.040 km) with ferry tanks
Service ceiling: 54.000 ft (16.000 m); zoom ceiling >70.000 ft
Rate of climb: 20.000 ft/min (100 m/s)
Wing loading: 76 lb/ft² (370 kg/m²)
Thrust/weight: 0.78
Armament:
2× under-fuselage hardpoints for mounting air-to-air missiles (2 or 4 AIM-9 Sidewinder)
Optional, but typically fitted: 2× 30 mm (1.18 in) ADEN cannons with 120 RPG in the lower fuselage, reducing the ventral tank's fuel capacity from 610 gal to 535 gal (2,430 l)
2× overwing pylon stations for 260 gal ferry tanks
The kit and its assembly
The inspiration to this whiffy Lightning came through fellow user Nick at whatifmodelers.com (credits go to him), who brought up the idea of EE/BAC Lightnings in Singapore use: such a small country would be the ideal user of this fast interceptor with its limited range. I found the idea very convincing and plausible, and since I like the Lightning and its unique design very much, I (too) had to make one for the 2013 group build "Asiarama" - even if a respective model would potentially be built twice. But it's always fun to see how the same theme is interpreted by different modelers, I am looking forward to my creation's sister ship.
The kit is the Matchbox Lightning F.2A/F.6 (PK-114) from 1976, and only little was changed. Fit is O.K., building the model poses no real problems. But the kit needs some putty work at the fuselage seams, and the many raised panel lines (esp. at the belly tank) and other relatively fine and many details for a Matchbox kit make sanding rather hazardous. Nevertheless, it's a solid kit. A bit toy-like, yes, but good value for the relatively little money. What's saved might be well invested into an extra decal sheet (see below).
Internal mods include some added details inside of the cockpit and the landing gear wells, but these were just enhancements to the original parts. The Avons' afterburners were simulated with implanted sprocket wheels from a 1:72 Panzer IV - not intended to be realistic at all, but IMO better than the kit's original, plain end caps!
Externally…
· the flaps were lowered
· some antennae and a finer pitot added
· about a dozen small air intakes/outlets were added (cut from styrene) or drilled open
· the IRST sensor fairing added, sculpted from a simple piece of sprue
· a pair of 30mm barrels mounted in the lower fuselage (hollow steel needles)
· the scratch-built quadruple Sidewinder rails are worth mentioning
The AIM-9E missiles come from the scrap heap, I was lucky to find a matching set of four. The optional overwing fuel tanks were not fitted, as this was supposed to become a "standard RSAF aircraft". I also did not opt for (popular) weapons mounted above the wings, since this would have called for modifications of the F.6 which did not appear worthwhile to me in context with the envisaged RSAF use. Switching to four Sidewinders on the fuselage hardpoints was IMHO enough.
Painting and markings
More effort went into this project part. The end of RAF's 74 Squadron at Tengah and the return of the Lightnings to Europe opened a nice historical window for my whif. Since the Tiger Squadron's aircraft sported a natural metal finish, partly with black fins (accidentally, the Matchbox kit offers just the correct decal/painting option), I decided that the RSAF would keep their aircraft this way: without camouflage, just RSAF markings, with some bold and highly visible colors added.
A SEA scheme (as on the RSAF Hunters, Strikemasters of Skyhawks) would have been another serious option and certainly look weird on a Lightning, as well as a three-tone gray wraparound low-viz scheme as used on the F-5E/S fighters, plausible in the 80ies onwards.
Testors Aluminum Metallizer was used as basic color, but several other shades including Steel and Titanium Metallizer, Testors normal Aluminum enamel paint, Humbrol 11 and 56 as well as Revell Aqua Color Aluminum were used for selected surface portions or panels all around the hull.
The spine including the cockpit frame was painted black. Using RSAF's 140 Squadron's colors as a benchmark, the fin received a checkered decoration in black and red, reminiscent of RAF 56 Squadron Lightnings. This was created through a black, painted base, onto which decals - every red field was cut from a red surface sheet from TL Modellbau - were transferred. Sounds horrible, but it was easier and more exact than expected. A very convenient solution with sharp edges and good contrast. A red trim line, 1mm wide, was added as a decal along the spine in a similar fashion.
The squadron emblem on the Lightning's nose was created through the same scratch method: from colored 1.5mm wide stripes, 3mm pieces were cut and applied one by one to form the checkered bar. The swift emblem comes from a 1:48 sheet for French WWI aircraft, made by Peddinghaus Decals from Germany. The overall look was supposed to be similar to the (real) 140 Squadron badge.
As a consequence, this created a logical problem: where to put the national roundel? Lightnings usually wore them on the nose, but unlike RAF style (where a bar was added around the roundel), I used RSAF Hunters as benchmark.
The RSAF roundels were a challenge. In order not to cramp the nose section too much I decided to place the roundels behind the wings. Not the must prominent position, but plausible. I originally wanted to use decals from the current 1:72 Airfix BAC Strikemaster kit, but they turned out to be too small.
After long search I was happy to find a 1:48 aftermarket decal sheet from Morgan Decals for an A-4S, with full color yin-yang roundels - in Canada! It took three weeks to wait for these parts, though, even though work had to wait for this final but vital detail !
As a side not, AFAIK any RSAF aircraft only carried and carries these roundels on the fuselage sides, not on the wings' upper or lower surfaces? It leaves the model a bit naked, so I decided to add 'RSAF' letters and the tactical code '237' to the wings' upper and lower sides. But the fin is surely bold enough to compensate ;)
The cockpit interior was painted in Medium Sea Gray (Humbrol 27), the landing gear and the wells in a mix of Humbrol 56 and 34, for a light gray with a metallic shimmer.
Other details include the white area behind the cockpit, which contained an AVPIN/isopropyl nitrate tank for the Lightning's start engine. Hazardous stuff - the light color was to prevent excessive heating in the sun, a common detail for Lightnings used in Cyprus. Another piece that took some effort was the shaggy nose cone, which was painted in a mix of Humbrol 56 and 86 and received some serious dry painting in light gray and ochre.
Stencils etc. were taken from an extensive aftermarket sheet for Lightnings from Xtradecal (X72096). The Matchbox decal sheet of PK-114 just offers the ejection seat warning triangles - that's all! The later T.55 kit is much better in this regard, but still far from being complete.
After decal application and to enhance the metallic look, the kit received a careful rubbing with finely grinded graphite, which, as a side effect, also emphasized the raised panel lines. A little dry painting was done around some exhaust openings, but nothing to make the aircraft look really old. This is supposed to be a bright and well-maintained interceptor!
Finally, the kit received a thin coat with glossy acrylic varnish, the spine and fin received a semi-matt coat and the black glare shield in front of the cockpit became matt.
A pretty straightforward build for the Asiarama group build, and with best regards and credits to Nick who came up with the original idea. Most work went into the decals and the NMF finish. I like the bold colors, and despite being flamboyant, they do not make the Lightning look too far out of place?
As a final note: XR773 never ended up in Singapore service, just like any BAC Lightning. In real life, the aircraft (first flight was in February 1966 with Roly Beamont at the controls) was transferred from 74 Squadron at RAF Tengah to Akrotiri in late 1971 and had a pretty long life, further serving with 56, 5 and 11 Squadrons as well as the Lightning Training Flight. And even then it’s life was far from over: XR773 is one of the Lightning survivors; in South Africa it flew in private hands as ZU-BEW until 2010, when it was grounded and the airframe put up to sale.
+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
Some Background:
The Lockheed F-94 Starfire was a first-generation jet aircraft of the United States Air Force. It was developed from the twin-seat Lockheed T-33 Shooting Star in the late 1940s as an all-weather, day/night interceptor.
The aircraft reached operational service in May 1950 with Air Defense Command, replacing the propeller-driven North American F-82 Twin Mustang in the all-weather interceptor role. The F-94 was the first operational USAF fighter equipped with an afterburner and was the first jet-powered all-weather fighter to enter combat during the Korean War in January 1953.
The initial production model was the F-94A, which entered operational service in May 1950. Its armament consisted of four 0.50 in (12.7 mm) M3 Browning machine guns mounted in the fuselage with the muzzles exiting under the radome. Two 165 US Gallon (1,204 litre) drop tanks, as carried by the F-80 and T-33, were carried on the wingtips. Alternatively, these could be replaced by a pair of 1,000 lb (454 kg) bombs under the wings, giving the aircraft a secondary fighter bomber capability. 109 were produced.
The subsequent F-94B, which entered service in January 1951, was outwardly virtually identical to the F-94A. The Allison J33 turbojet had a number of modifications made, though, which made it a very reliable engine. The pilot was provided with a more roomy cockpit and the canopy was replaced by a canopy with a bow frame in the center between the two crew members, as well as a new Instrument Landing System (ILS). 356 of these were built.
The following F-94C was extensively modified and initially designated F-97, but it was ultimately decided to treat it as a new version of the F-94. USAF interest was lukewarm, since aircraft technology developed at a fast pace in the Fifties, so Lockheed funded development themselves, converting two F-94B airframes to YF-94C prototypes for evaluation.
To improve performance, a completely new, much thinner wing was fitted, along with a swept tail surface. The J33 engine was replaced with a more powerful Pratt & Whitney J48, a license-built version of the afterburning Rolls-Royce Tay, which produced a dry thrust of 6,350 pounds-force (28.2 kN) and approximately 8,750 pounds-force (38.9 kN) with afterburning.
The fire control system was upgraded to the Hughes E-5 with an AN/APG-40 radar in a modified nose with an enlarged radome. The guns were removed and replaced with an all-rocket armament, which was – at that time – regarded as more effective against high-flying, subsonic bomber formations. The internal armament consisted of four flip-up panels in a ring around the nose, each containing six rockets. External pods on the wings augmented the offensive ordnance to 48 projectiles. Operational service began with six squadrons by May 1954.
According to test pilot Tony LeVier, the F-94C was capable of supersonic flight, but Lockheed felt that the straight wing limited the airframe's potential, esp. with the uprated engine. Besides, the earlier F-94 variants already saw the end of their relatively brief operational life, already being replaced in the mid-1950s by the Northrop F-89 Scorpion and North American F-86D Sabre interceptor aircraft in front-line service and relegated to National Guard service. Therefore, Lockheed launched another update program for the F-94 in 1953, again as a private venture.
The resulting F-94E (the F-94D was a proposed fighter bomber variant which made it to prototype staus) was another, evolutionary modification of the basic concept, which, in the meantime, had almost nothing left in common with its F-80/T-33 ancestry.
It was based on the F-94C, most obvious change was the introduction of swept wings for supersonic capability in level flight. This change also necessitated other aerodynamic adjustments, including a new, deeper fin with increased area and a modified landing gear that would better cope with the increased AUW.
Under the hood, the F-94E was constructed around the new Hughes MG-3 fire control system, similar to the early F-102, but kept the AN/APG-40, even though it was coupled with an enlarged antenna. The respective new radome now covered the complete nose cross section. Furthermore, the F-94 E introduced innovations like a Texas Instruments infrared search/tracking system (IRST), which allowed passive tracking of heat emissions, mounted in a canoe fairing under the nose, passive radar warning receivers, transponders as well as backup artificial horizons.
With this improved equipment the interceptor was now able to deploy semi-active radar homing GAR-1s and/or infrared GAR-2s (later re-designated AIM-4A/B Falcon), operating at day and night as well as under harsh weather conditions.
All missiles were carried externally on underwing pylons. Beside the original main wet hardpoints outside the landing gear (typically a pair of 165 US Gallon (1,204 litre) drop tank, that were carried on the wing tips on the former versions), two additional pairs of lighter pylons were added under the wing roots and the outer wings.
Typically, a pair of SARH- and IR-guided AIM-4s were carried, one per pylon, plus a pair of drop tanks. Alternatively, the F-94E could carry up to 4.000 lb (1,816 kg) of ordnance, including up to six streamlined pods, each holding nineteen 2 ¾” in (70 mm) Mk 4/Mk 40 Folding-Fin Aerial Rockets. Any internal armament was deleted.
The F-94E's new wings allowed a top speed of 687mph at sea level and a top speed of 693 mph (1,115 km/h) at height – compared with the F-94C’s 640 mph (556 kn, 1,030 km/h) a rather mild improvement. But the enlarged wing area resulted in a considerably improved rate of climb as well as good maneuverability at height. The F-94E's performance was overall on par with the F-86D, with the benefit of a second crew member, while its weapon capability was comparable with the much bigger (but slower) F-89.
Both of these types were already introduced, so the Air Force's interest was, once more, less than enthusiastic. Eventually the F-94's proven resilience to harsh climate conditions, esp. in the Far North, earned Lockheed in 1955 a production contract for 72 F-94Es for interceptor squadrons based in Alaska, New Foundland, Greenland and Iceland.
These production machines arrived to the Northern theatre of operations in summer 1956 and featured an improved weapon capability: on the wet wing hardpoints, a pair of MB-1 Genie (formerly known as ‘Ding Dong’ missile, later re-coded AIR-2) nuclear unguided rockets could be carried.
For the missile pylons under the wing roots, twin launch rails were introduced so that the F-94E could theoretically carry a total of up to eight AIM-4 missiles, even though the wet pylons were typically occupied with the drop tanks and only two pairs of AIM-4A and B were carried under the wing roots. The J48 engine was slightly uprated, too: the F-94E’s P-9 variant delivered now 6,650 lbf (29.5 kN) dry thrust and 10,640 lbf (47.3 kN) at full afterburner.
Keflavik Airport, Iceland, although controlled by Military Air Transport Service (MATS), was the first base to be equipped with F-94Es as part of the 82d Fighter-Interceptor Squadron in early 1957, where the machines replaced F-94Bs and F-89Cs.
The type was popular among the crews, because it coupled a relatively high agility (compared with the F-89 Scorpion) with the psychological benefit of a two men crew, not to be underestimated during operations in the Far North as well as over open water.
The F-94's career didn't last long, though, the aircraft soon became outdated. The last F-94E was already retired from USAF front-line service in November 1962, only three years after the last F-94C Starfires were phased out of ANG service. Eventually, the fighters were replaced by the F-101, F-102 and the F-106.
General characteristics:
Crew: 2
Length: 44 ft 11 in (13.71 m)
Wingspan: 39 ft 10 in (12.16 m)
Height: 14 ft 6 in (4.43 m)
Wing area: 313.4 sq ft (29.11 m²)
Empty weight: 12,708 lb (5,764 kg)
Loaded weight: 18,300 lb (8,300 kg)
Max. takeoff weight: 24,184 lb (10,970 kg)
Powerplant:
1× Pratt & Whitney J48-P-9 turbojet, rated at 6,650 lbf (29.5 kN) dry thrust
and 10,640 lbf (47.3 kN) at full afterburner.
Performance:
Maximum speed: 693 mph (1,115 km/h) at height and in level flight
Range: 805 mi (700 nmi, 1,300 km) in combat configuration with four AAMs and two drop tanks
Ferry range: 1,275 mi (1,100 nmi, 2,050 km)
Service ceiling: 51,400 ft (15,670 m)
Rate of climb: 12,150 ft/min (61.7 m/s)
Wing loading: 78.6 lb/ft² (384 kg/m²)
Thrust/weight: 0.48
Armament:
Six underwing pylons for a mix of AIM-4 Falcon AAMs (IR- and SARH-guided),
pods with unguided 19× 2.75” (70 mm) Mk 4/Mk 40 Folding-Fin Aerial Rockets,
a pair of 165 gal. drop tanks or a pair of unguided nuclear MB-1 Genie air-to-air missiles
The kit and its assembly:
Another entry for the Cold War GB at whatifmodelers.com. This build was originally inspired by profiles of a P-80/F-86 hybrid, and respective kitbashings from other modelers. An elegant, though fictional, aircraft! Nevertheless, I wanted to build one, too, and take the original idea a step further. So I chose the F-94 as an ingredient for the kit mix – a rather overlooked aircraft, and getting hands on a donation kit took some time, since there are not many options.
I wanted to use the F-94C as starting point, which is already considerably different from the F-80/T-33. Adding swept wings (from a Hobby Boss F-86F, with larger “6-3” wings) changed this look even more. So much that I decided to modify the fin, which did not look appropriate anymore.
The fin and the spine’s rear end was replaced with the fin of a Kangnam/Revell Yak-38. In order to unify shapes and make the donation less obvious, the Yak-38 fin’s characteristic, pointed tip was clipped and replaced by a more conventional design, scratched from a piece of 1.5mm styrene sheet. In the wake of this modification, the round elevator tips were clipped, too.
Using the F-94’s landing gear wells as benchmarks, the F-86 wings (which had to be cut off of the Hobby Boss kit’s integral, lower fuselage part) were sanded into shape and simply glued into a proper position.
This worked so well that a completely new and plausible main landing gear installation was created. As a consequence, I used the F-86’s landing gear struts - they are much better detailed than the Emhar F-94C’s parts. The front wheel strut (it’s a single piece) was transplanted too, even though the suspension was switched 180°.
The Emhar F-94C’s cockpit is pretty good (esp. the seats) and were taken OOB. I just covered some gaps in the cockpit walls and under the windscreen with paper tissue, soaked with white glue.
The nose was replaced by a bigger radome, taken from an Armstrong Whitworth Meteor NF.14 (Matchbox kit). Its diameter and shape fit almost perfectly onto the F-94C’s front end, and the result reminds a lot of the EF-94C photo reconnaissance test aircraft! Under the nose, a shallow fairing for the IR sensor was added, and all four air brakes were mounted in open position.
The underwing pylons come from the scrap box (one pair from an Airfix A-1 Skyraider, another from an ESCI Kamow Ka-34 ‘Hokum’ which also provide the launch rails for the ordnance). The drop tanks come probably from an Italeri F-16 (not certain) while the four AIM-4s come from a Hasegawa USAF air-to-air weapons set.
Painting and markings:
This was supposed to become a classic USAF aircraft of the late Fifties, since the F-94 had never been exported. I was actually tempted to add Red Stars, though, because the overall shape has a certain Soviet look to it - esp. the nose, which reminds a lot of the contemporary Yak-25 interceptor?
But the original USAF idea won, with an all-metal finish. In order to brighten things up I chose a squadron that served with the Northeast or Alaskan Air Command, which added orange-red high-viz markings to wings and fuselage.
The NMF sections were primed with a base coat of Revell’s acrylic Aluminum. On top of that, single panels and details were painted with Alu Plate and Steel Metallizer from Modelmaster.
The International Orange markings were created with Humbrol 132, slightly shaded with orange (Humbrol 18).
Part of the nose section and the spine were painted in ADC Grey (FS 16473, Modelmaster), just for some diversity. Cockpit interior and landing gear wells received a coat of US Cockpit Green (Humbrol 226), while the interior of the air brakes was painted in Zinc Primer (Humbrol 81), according to pictures of operational F-94s.
The landing gear struts and the inside of their covers became Aluminum (Humbrol 56). The anti glare panel in front of the cockpit was done with dark olive drab (Humbrol 66), the radome flat black and weathered with wet-in-wet streaks of sand brown.
Operational F-94s show serious weathering on their di-electric noses, so this detail was taken over to the kit. Other weathering with paint, beyond a basic black ink wash and some shading on the orange areas, was not done.
The drop tanks were painted with Steel Metallizer, for a different metallic shade from the fuselage, and the AIM-4’s received a typical outfit in white and bright red with different seeker heads.
Primary decals come from a Heller F-94B kit, which have the benefit of a silver background – even though this does not match 100% with the paint. Squadron markings come from an Xtradecal F-102 sheet, tailored to the kit. Most stencils come from the Emhar OOB sheet, plus some more from the aforementioned F-102 sheet.
After some soot stains around the exhaust were added with graphite, the kit was sealed under a coat of semi-glossy acrylic varnish. The anti glare panel and the radome were kept matt, though.
A pretty result. Mixing parts from a Shooting Star and a Sabre (a Shooting Sabre, perhaps?) results in a very elegant aircraft. And while the F-94 lost much of its original, elegant appeal, the combo still works with this later interceptor variant of the F-80. Very plausible, IMHO.
Pasted from Wikipedia: Bell-Boeing V-22 Osprey
• • • • •
The Bell-Boeing V-22 Osprey is a multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The V-22 originated from the U.S. Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. It was developed jointly by the Bell Helicopter, and Boeing Helicopters team, known as Bell Boeing, which produce the aircraft.[4] The V-22 first flew in 1989, and began years of flight testing and design alterations.
The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007. The Osprey's other operator, the U.S. Air Force fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed for combat operations in Iraq and Afghanistan.
Contents
•• 1.2 Flight testing and design changes
• 2 Design
• 8 Notable appearances in media
Development
Early development
The failure of the Iran hostage rescue mission in 1980 demonstrated to the United States military a need[5] for "a new type of aircraft, that could not only take off and land vertically but also could carry combat troops, and do so at speed."[6] The U.S. Department of Defense began the Joint-service Vertical take-off/landing Experimental (JVX) aircraft program in 1981, under U.S. Army leadership. Later the U.S. Navy/Marine Corps took the lead.[7][8] The JVX combined requirements from the Marine Corps, Air Force, Army and Navy.[9][10] A request for proposals (RFP) was issued in December 1982 for JVX preliminary design work. Interest in the program was expressed by Aérospatiale, Bell Helicopter, Boeing Vertol, Grumman, Lockheed, and Westland. The DoD pushed for contractors to form teams. Bell partnered with Boeing Vertol. The Bell Boeing team submitted a proposal for a enlarged version of the Bell XV-15 prototype on 17 February 1983. This was the only proposal received and a preliminary design contract was awarded on 26 April 1983.[11][12]
The JVX aircraft was designated V-22 Osprey on 15 January 1985; by March that same year the first six prototypes were being produced, and Boeing Vertol was expanded to deal with the project workload.[13][14] Work has been split evenly between Bell and Boeing. Bell Helicopter manufactures and integrates the wing, nacelles, rotors, drive system, tail surfaces, and aft ramp, as well as integrates the Rolls-Royce engines and performs final assembly. Boeing Helicopters manufactures and integrates the fuselage, cockpit, avionics, and flight controls.[4][15] The USMC variant of the Osprey received the MV-22 designation and the Air Force variant received CV-22; reversed from normal procedure to prevent Marine Ospreys from having a conflicting designation with aircraft carriers (CV).[16] Full-scale development of the V-22 tilt-rotor aircraft began in 1986.[2] On 3 May 1986 the Bell-Boeing partnership was awarded a $1.714 billion contract for V-22 aircraft by the Navy, thus at this point the project had acquisition plans with all four arms of the U.S. military.[17]
The first V-22 was rolled out with significant media attention in May 1988.[18][19] However the project suffered several political blows. Firstly in the same year, the Army left the program, citing a need to focus its budget on more immediate aviation programs.[20] The project also faced considerable dialogue in the Senate, surviving two votes that both could have resulted in cancellation.[21][22] Despite the Senate's decision, the Department of Defense instructed the Navy not to spend more money on the Osprey.[23] At the same time, the Bush administration sought the cancellation of the project.[23]
Flight testing and design changes
The first of six MV-22 prototypes first flew on 19 March 1989 in the helicopter mode,[24] and on 14 September 1989 as a fixed-wing plane.[25] The third and fourth prototypes successfully completed the Osprey's first Sea Trials on the USS Wasp in December 1990.[26] However, the fourth and fifth prototypes crashed in 1991-92.[27] Flight tests were resumed in August 1993 after changes were incorporated in the prototypes.[2] From October 1992 until April 1993, Bell and Boeing redesigned the V-22 to reduce empty weight, simplify manufacture and reduce production costs. This redesigned version became the B-model.[28]
Flight testing of four full-scale development V-22s began in early 1997 when the first pre-production V-22 was delivered to the Naval Air Warfare Test Center, Naval Air Station Patuxent River, Maryland. The first EMD flight took place on 5 February 1997. The first of four low rate initial production aircraft, ordered on 28 April 1997, was delivered on 27 May 1999. Osprey number 10 completed the program's second Sea Trials, this time from the USS Saipan in January 1999.[2] During external load testing in April 1999, Boeing used a V-22 to lift and transport the M777 howitzer.[29] In 2000, Boeing announced that the V-22 would be fitted with a nose-mounted GAU-19 Gatling gun,[30] but the GAU-19 gun was later canceled.[31]
In 2000, there were two further fatal crashes, killing a total of 19 Marines, and the production was again halted while the cause of these crashes was investigated and various parts were redesigned.[32] The V-22 completed its final operational evaluation in June 2005. The evaluation was deemed successful; events included long range deployments, high altitude, desert and shipboard operations. The problems identified in various accidents had been addressed.[33]
Controversy
The V-22's development process has been long and controversial, partly due to its large cost increases.[34] When the development budget, first planned for $2.5 billion in 1986, increased to a projected $30 billion in 1988, then-Defense Secretary Dick Cheney tried to zero out its funding. He was eventually overruled by Congress.[32] As of 2008, $27 billion have been spent on the Osprey program and another $27.2 billion will be required to complete planned production numbers by the end of the program.[2]
The V-22 squadron's former commander at Marine Corps Air Station New River, Lt. Colonel Odin Lieberman, was relieved of duty in 2001 after allegations that he instructed his unit that they needed to falsify maintenance records to make the plane appear more reliable.[2][35] Three officers were later implicated in the falsification scandal.[34]
The aircraft is incapable of autorotation, and is therefore unable to land safely in helicopter mode if both engines fail. A director of the Pentagon's testing office in 2005 said that if the Osprey loses power while flying like a helicopter below 1,600 feet (490 m), emergency landings "are not likely to be survivable". But Captain Justin (Moon) McKinney, a V-22 pilot, says that this will not be a problem, "We can turn it into a plane and glide it down, just like a C-130".[31] A complete loss of power would require the failure of both engines, as a drive shaft connects the nacelles through the wing; one engine can power both proprotors.[36] While vortex ring state (VRS) contributed to a deadly V-22 accident, the aircraft is less susceptible to the condition than conventional helicopters and recovers more quickly.[5] The Marines now train new pilots in the recognition of and recovery from VRS and have instituted operational envelope limits and instrumentation to help pilots avoid VRS conditions.[32][37]
It was planned in 2000 to equip all V-22s with a nose-mounted Gatling gun, to provide "the V-22 with a strong defensive firepower capability to greatly increase the aircraft's survivability in hostile actions."[30] The nose gun project was canceled however, leading to criticism by retired Marine Corps Commandant General James L. Jones, who is not satisfied with the current V-22 armament.[31] A belly-mounted turret was later installed on some of the first V-22s sent to the War in Afghanistan in 2009.[38]
With the first combat deployment of the MV-22 in October 2007, Time Magazine ran an article condemning the aircraft as unsafe, overpriced, and completely inadequate.[31] The Marine Corps, however, responded with the assertion that much of the article's data were dated, obsolete, inaccurate, and reflected expectations that ran too high for any new field of aircraft.[39]
Recent development
On 28 September 2005, the Pentagon formally approved full-rate production for the V-22.[40] The plan is to boost production from 11 a year to between 24 and 48 a year by 2012. Of the 458 total planned, 360 are for the Marine Corps, 48 for the Navy, and 50 for the Air Force at an average cost of $110 million per aircraft, including development costs.[2] The V-22 had an incremental flyaway cost of $70 million per aircraft in 2007,[3] but the Navy hopes to shave about $10 million off that cost after a five-year production contract starts in 2008.[41]
The Bell-Boeing Joint Project Office in Amarillo, Texas will design a new integrated avionics processor to resolve electronics obsolescence issues and add new network capabilities.[42]
Design
The Osprey is the world's first production tiltrotor aircraft, with one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. It is classified as a powered lift aircraft by the Federal Aviation Administration.[43] For takeoff and landing, it typically operates as a helicopter with the nacelles vertical (rotors horizontal). Once airborne, the nacelles rotate forward 90° in as little as 12 seconds for horizontal flight, converting the V-22 to a more fuel-efficient, higher-speed turboprop airplane. STOL rolling-takeoff and landing capability is achieved by having the nacelles tilted forward up to 45°. For compact storage and transport, the V-22's wing rotates to align, front-to-back, with the fuselage. The proprotors can also fold in a sequence taking 90 seconds.[44]
Most Osprey missions will use fixed wing flight 75 percent or more of the time, reducing wear and tear on the aircraft and reducing operational costs.[45] This fixed wing flight is higher than typical helicopter missions allowing longer range line-of-sight communications and so improved command and control.[2] Boeing has stated the V-22 design loses 10% of its vertical lift over a Tiltwing design when operating in helicopter mode because of airflow resistance due to the wings, but that the Tiltrotor design has better short takeoff and landing performance.[46]
The V-22 is equipped with a glass cockpit, which incorporates four Multi-function displays (MFDs) and one shared Central Display Unit (CDU), allowing the pilots to display a variety of images including: digimaps centered or decentered on current position, FLIR imagery, primary flight instruments, navigation (TACAN, VOR, ILS, GPS, INS), and system status. The flight director panel of the Cockpit Management System (CMS) allows for fully-coupled (aka: autopilot) functions which will take the aircraft from forward flight into a 50-foot hover with no pilot interaction other than programming the system.[47] The glass cockpit of the canceled CH-46X was derived from the V-22.[48]
The V-22 is a fly-by-wire aircraft with triple-redundant flight control systems.[49] With the nacelles pointing straight up in conversion mode at 90° the flight computers command the aircraft to fly like a helicopter, with cyclic forces being applied to a conventional swashplate at the rotor hub. With the nacelles in airplane mode (0°) the flaperons, rudder, and elevator fly the aircraft like an airplane. This is a gradual transition and occurs over the rotation range of the nacelles. The lower the nacelles, the greater effect of the airplane-mode control surfaces.[50] The nacelles can rotate past vertical to 97.5° for rearward flight.[51][52]
The Osprey can be armed with one M240 7.62x51mm NATO (.308 in caliber) or M2 .50 in caliber (12.7 mm) machine gun on the loading ramp, that can be fired rearward when the ramp is lowered. A GAU-19 three-barrel .50 in gatling gun mounted below the V-22's nose has also been studied for future upgrade.[31][53] BAE Systems developed a remotely operated turreted weapons system for the V-22,[54] which was installed on half of the first V-22s deployed to Afghanistan in 2009.[38] The 7.62 mm belly gun turret is remotely operated by a gunner inside the aircraft, who acquires targets with a separate pod using color television and forward looking infrared imagery.
U.S. Naval Air Systems Command is working on upgrades to increase the maximum speed from 250 knots (460 km/h; 290 mph) to 270 knots (500 km/h; 310 mph), increase helicopter mode altitude limit from 10,000 feet (3,000 m) to 12,000 feet (3,700 m) or 14,000 feet (4,300 m), and increase lift performance.[55]
Operational history
US Marine Corps
Marine Corps crew training on the Osprey has been conducted by VMMT-204 since March 2000. On 3 June 2005, the Marine Corps helicopter squadron Marine Medium Helicopter 263 (HMM-263), stood down to begin the process of transitioning to the MV-22 Osprey.[56] On 8 December 2005, Lieutenant General Amos, commander of the II MEF, accepted the delivery of the first fleet of MV-22s, delivered to HMM-263. The unit reactivated on 3 March 2006 as the first MV-22 squadron and was redesignated VMM-263. On 31 August 2006, VMM-162 (the former HMM-162) followed suit. On 23 March 2007, HMM-266 became Marine Medium Tiltrotor Squadron 266 (VMM-266) at Marine Corps Air Station New River, North Carolina.[57]
The Osprey has been replacing existing CH-46 Sea Knight squadrons.[58] The MV-22 reached initial operational capability (IOC) with the U.S. Marine Corps on 13 June 2007.[1] On 10 July 2007 an MV-22 Osprey landed aboard the Royal Navy aircraft carrier, HMS Illustrious in the Atlantic Ocean. This marked the first time a V-22 had landed on any non-U.S. vessel.[59]
On 13 April 2007, the U.S. Marine Corps announced that it would be sending ten V-22 aircraft to Iraq, the Osprey's first combat deployment. Marine Corps Commandant, General James Conway, indicated that over 150 Marines would accompany the Osprey set for September deployment to Al-Asad Airfield.[60][61] On 17 September 2007, ten MV-22Bs of VMM-263 left for Iraq aboard the USS Wasp. The decision to use a ship rather than use the Osprey's self-deployment capability was made because of concerns over icing during the North Atlantic portion of the trip, lack of available KC-130s for mid-air refueling, and the availability of the USS Wasp.[62]
The Osprey has provided support in Iraq, racking up some 2,000 flight hours over three months with a mission capable availability rate of 68.1% as of late-January 2008.[63] They are primarily used in Iraq's western Anbar province for routine cargo and troop movements, and also for riskier "aero-scout" missions. General David Petraeus, the top U.S. military commander in Iraq, used one to fly around Iraq on Christmas Day 2007 to visit troops.[64] Then-presidential candidate Barack Obama also flew in Ospreys during his high profile 2008 tour of Iraq.[65]
The only major problem has been obtaining the necessary spare parts to maintain the aircraft.[66] The V-22 had flown 3,000 sorties totaling 5,200 hours in Iraq as of July 2008.[67] USMC leadership expect to deploy MV-22s to Afghanistan in 2009.[66][68] General George J. Trautman, III praised the increased range of the V-22 over the legacy helicopters in Iraq and said that "it turned his battle space from the size of Texas into the size of Rhode Island."[69]
Naval Air Systems Command has devised a temporary fix for sailors to place portable heat shields under Osprey engines to prevent damage to the decks of some of the Navy's smaller amphibious ships, but they determined that a long term solution to the problem would require these decks be redesigned with heat resistant deck coatings, passive thermal barriers and changes in ship structure in order to operate V-22s and F-35Bs.[70]
A Government Accountability Office study reported that by January 2009 the Marines had 12 MV-22s operating in Iraq and they managed to successfully complete all assigned missions. The same report found that the V-22 deployments had mission capable rates averaging 57% to 68% and an overall full mission capable rate of only 6%. It also stated that the aircraft had shown weakness in situational awareness, maintenance, shipboard operations and the ability to transport troops and external cargo.[71] That study also concluded that the "deployments confirmed that the V-22’s enhanced speed and range enable personnel and internal cargo to be transported faster and farther than is possible with the legacy helicopters it is replacing".[71]
The MV-22 saw its first offensive combat mission, Operation Cobra's Anger on 4 December 2009. Ospreys assisted in inserting 1,000 Marines and 150 Afghan troops into the Now Zad Valley of Helmand Province in southern Afghanistan to disrupt communication and supply lines of the Taliban.[38] In January 2010 the MV-22 Osprey is being sent to Haiti as part of Operation Unified Response relief efforts after the earthquake there. This will be the first use the Marine V-22 in a humanitarian mission.[72]
US Air Force
The Air Force's first operational CV-22 Osprey was delivered to the 58th Special Operations Wing (58th SOW) at Kirtland Air Force Base, New Mexico on 20 March 2006. This and subsequent aircraft will become part of the 58th SOW's fleet of aircraft used for training pilots and crew members for special operations use.[73] On 16 November 2006, the Air Force officially accepted the CV-22 in a ceremony conducted at Hurlburt Field, Florida.[74]
The US Air Force's first operational deployment of the Osprey sent four CV-22s to Mali in November 2008 in support of Exercise Flintlock. The CV-22s flew nonstop from Hurlburt Field, Florida with in-flight refueling.[5] AFSOC declared that the 8th Special Operations Squadron reached Initial Operational Capability on 16 March 2009, with six of its planned nine CV-22s operational.[75]
In June 2009, CV-22s of the 8th Special Operations Squadron delivered 43,000 pounds (20,000 kg) of humanitarian supplies to remote villages in Honduras that were not accessible by conventional vehicles.[76] In November 2009, the 8th SO Squadron and its six CV-22s returned from a three-month deployment in Iraq.[77]
The first possible combat loss of an Osprey occurred on 9 April, 2010, as a CV-22 went down near Qalat, Zabul Province, Afghanistan, killing four.[78][79]
Potential operators
In 1999 the V-22 was studied for use in the United Kingdom's Royal Navy,[80] it has been raised several times as a candidate for the role of Maritime Airborne Surveillance and Control (MASC).[81]
Israel had shown interest in the purchase of MV-22s, but no order was placed.[82][83] Flightglobal reported in late 2009 that Israel has decided to wait for the CH-53K instead.[84]
The V-22 Osprey is a candidate for the Norwegian All Weather Search and Rescue Helicopter (NAWSARH) that is planned to replace the Westland Sea King Mk.43B of the Royal Norwegian Air Force in 2015.[85] The other candidates for the NAWSARH contract of 10-12 helicopters are AgustaWestland AW101 Merlin, Eurocopter EC225, NHIndustries NH90 and Sikorsky S-92.[86]
Bell Boeing has made an unsolicited offer of the V-22 for US Army medical evacuation needs.[87] However the Joint Personnel Recovery Agency issued a report that said that a common helicopter design would be needed for both combat recovery and medical evacuation and that the V-22 would not be suitable for recovery missions because of the difficulty of hoist operations and lack of self-defense capabilities.[88]
The US Navy remains a potential user of the V-22, but its role and mission with the Navy remains unclear. The latest proposal is to replace the C-2 Greyhound with the V-22 in the fleet logistics role. The V-22 would have the advantage of being able to land on and support non-carriers with rapid delivery of supplies and people between the ships of a taskforce or to ships on patrol beyond helicopter range.[89] Loren B. Thompson of the Lexington Institute has suggested V-22s for use in combat search and rescue and Marine One VIP transport, which also need replacement aircraft.[90]
Variants
• V-22A
•• Pre-production full-scale development aircraft used for flight testing. These are unofficially considered A-variants after 1993 redesign.[91]
• HV-22
•• The U.S. Navy considered an HV-22 to provide combat search and rescue, delivery and retrieval of special warfare teams along with fleet logistic support transport. However, it chose the MH-60S for this role in 1992.[92]
• SV-22
•• The proposed anti-submarine warfare Navy variant. The Navy studied the SV-22 in the 1980s to replace S-3 and SH-2 aircraft.[93]
• MV-22B
•• Basic U.S. Marine Corps transport; original requirement for 552 (now 360). The Marine Corps is the lead service in the development of the V-22 Osprey. The Marine Corps variant, the MV-22B, is an assault transport for troops, equipment and supplies, capable of operating from ships or from expeditionary airfields ashore. It is replacing the Marine Corps' CH-46E[57] and CH-53D.[94]
• CV-22B
•• Air Force variant for the U.S. Special Operations Command (USSOCOM). It will conduct long-range, special operations missions, and is equipped with extra fuel tanks and terrain-following radar.[95][96]
Operators
•• 8th Special Operations Squadron (8 SOS) at Hurlburt Field, Florida
•• 71st Special Operations Squadron (71 SOS) at Kirtland Air Force Base, New Mexico
•• 20th Special Operations Squadron (20 SOS) at Cannon Air Force Base, New Mexico
•• VMM-161
•• VMM-162
•• VMM-261
•• VMM-263
•• VMM-264
•• VMM-266
•• VMM-365
•• VMMT-204 - Training squadron
•• VMX-22 - Marine Tiltrotor Operational Test and Evaluation Squadron
Notable accidents
Main article: Accidents and incidents involving the V-22 Osprey
From 1991 to 2000 there were four significant crashes, and a total of 30 fatalities, during testing.[32] Since becoming operational in 2007, the V-22 has had one possible combat loss due to an unknown cause, no losses due to accidents, and seven other notable, but minor, incidents.
• On 11 June 1991, a mis-wired flight control system led to two minor injuries when the left nacelle struck the ground while the aircraft was hovering 15 feet (4.6 m) in the air, causing it to bounce and catch fire.[97]
• On 20 July 1992, a leaking gearbox led to a fire in the right nacelle, causing the aircraft to drop into the Potomac River in front of an audience of Congressmen and other government officials at Quantico, killing all seven on board and grounding the aircraft for 11 months.[98]
• On 8 April 2000, a V-22 loaded with Marines to simulate a rescue, attempted to land at Marana Northwest Regional Airport in Arizona, stalled when its right rotor entered vortex ring state, rolled over, crashed, and exploded, killing all 19 on board.[37]
• On 11 December 2000, after a catastrophic hydraulic leak and subsequent software instrument failure, a V-22 fell 1,600 feet (490 m) into a forest in Jacksonville, North Carolina, killing all four aboard. This caused the Marine Corps to ground their fleet of eight V-22s, the second grounding that year.[99][100]
Specifications (MV-22B)
Data from Boeing Integrated Defense Systems,[101] Naval Air Systems Command,[102] US Air Force CV-22 fact sheet,[95] Norton,[103] and Bell[104]
General characteristics
• Crew: Four (pilot, copilot and two flight engineers)
• Capacity: 24 troops (seated), 32 troops (floor loaded) or up to 15,000 lb (6,800 kg) of cargo (dual hook)
• Length: 57 ft 4 in (17.5 m)
• Rotor diameter: 38 ft 0 in (11.6 m)
• Wingspan: 45 ft 10 in (14 m)
• Width with rotors: 84 ft 7 in (25.8 m)
• Height: 22 ft 1 in/6.73 m; overall with nacelles vertical (17 ft 11 in/5.5 m; at top of tailfins)
• Disc area: 2,268 ft² (212 m²)
• Wing area: 301.4 ft² (28 m²)
• Empty weight: 33,140 lb (15,032 kg)
• Loaded weight: 47,500 lb (21,500 kg)
• Max takeoff weight: 60,500 lb (27,400 kg)
• Powerplant: 2× Rolls-Royce Allison T406/AE 1107C-Liberty turboshafts, 6,150 hp (4,590 kW) each
Performance
• Maximum speed: 250 knots (460 km/h, 290 mph) at sea level / 305 kn (565 km/h; 351 mph) at 15,000 ft (4,600 m)[105]
• Cruise speed: 241 knots (277 mph, 446 km/h) at sea level
• Range: 879 nmi (1,011 mi, 1,627 km)
• Combat radius: 370 nmi (426 mi, 685 km)
• Ferry range: 1,940 nmi (with auxiliary internal fuel tanks)
• Service ceiling: 26,000 ft (7,925 m)
• Rate of climb: 2,320 ft/min (11.8 m/s)
• Disc loading: 20.9 lb/ft² at 47,500 lb GW (102.23 kg/m²)
• Power/mass: 0.259 hp/lb (427 W/kg)
Armament
• 1× M240 machine gun on ramp, optional
Notable appearances in media
Main article: Aircraft in fiction#V-22 Osprey
See also
• Elizabeth A. Okoreeh-Baah, USMC - first female to pilot a V-22 Osprey
Related development
Comparable aircraft
Related lists
• List of military aircraft of the United States
References
Bibliography
• Markman, Steve and Bill Holder. "Bell/Boeing V-22 Osprey Tilt-Engine VTOL Transport (U.S.A.)". Straight Up: A History of Vertical Flight. Schiffer Publishing, 2000. ISBN 0-7643-1204-9.
• Norton, Bill. Bell Boeing V-22 Osprey, Tiltrotor Tactical Transport. Midland Publishing, 2004. ISBN 1-85780-165-2.
External links
Wikimedia Commons has media related to: V-22 Osprey
• V-22 Osprey web, and www.history.navy.mil/planes/v-22.html
• CV-22 fact sheet on USAF site
• www.globalsecurity.org/military/systems/aircraft/v-22.htm
• www.airforce-technology.com/projects/osprey/
• "Flight of the Osprey", US Navy video of V-22 operations
Pasted from Wikipedia: Bell-Boeing V-22 Osprey
• • • • •
The Bell-Boeing V-22 Osprey is a multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The V-22 originated from the U.S. Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. It was developed jointly by the Bell Helicopter, and Boeing Helicopters team, known as Bell Boeing, which produce the aircraft.[4] The V-22 first flew in 1989, and began years of flight testing and design alterations.
The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007. The Osprey's other operator, the U.S. Air Force fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed for combat operations in Iraq and Afghanistan.
Contents
•• 1.2 Flight testing and design changes
• 2 Design
• 8 Notable appearances in media
Development
Early development
The failure of the Iran hostage rescue mission in 1980 demonstrated to the United States military a need[5] for "a new type of aircraft, that could not only take off and land vertically but also could carry combat troops, and do so at speed."[6] The U.S. Department of Defense began the Joint-service Vertical take-off/landing Experimental (JVX) aircraft program in 1981, under U.S. Army leadership. Later the U.S. Navy/Marine Corps took the lead.[7][8] The JVX combined requirements from the Marine Corps, Air Force, Army and Navy.[9][10] A request for proposals (RFP) was issued in December 1982 for JVX preliminary design work. Interest in the program was expressed by Aérospatiale, Bell Helicopter, Boeing Vertol, Grumman, Lockheed, and Westland. The DoD pushed for contractors to form teams. Bell partnered with Boeing Vertol. The Bell Boeing team submitted a proposal for a enlarged version of the Bell XV-15 prototype on 17 February 1983. This was the only proposal received and a preliminary design contract was awarded on 26 April 1983.[11][12]
The JVX aircraft was designated V-22 Osprey on 15 January 1985; by March that same year the first six prototypes were being produced, and Boeing Vertol was expanded to deal with the project workload.[13][14] Work has been split evenly between Bell and Boeing. Bell Helicopter manufactures and integrates the wing, nacelles, rotors, drive system, tail surfaces, and aft ramp, as well as integrates the Rolls-Royce engines and performs final assembly. Boeing Helicopters manufactures and integrates the fuselage, cockpit, avionics, and flight controls.[4][15] The USMC variant of the Osprey received the MV-22 designation and the Air Force variant received CV-22; reversed from normal procedure to prevent Marine Ospreys from having a conflicting designation with aircraft carriers (CV).[16] Full-scale development of the V-22 tilt-rotor aircraft began in 1986.[2] On 3 May 1986 the Bell-Boeing partnership was awarded a $1.714 billion contract for V-22 aircraft by the Navy, thus at this point the project had acquisition plans with all four arms of the U.S. military.[17]
The first V-22 was rolled out with significant media attention in May 1988.[18][19] However the project suffered several political blows. Firstly in the same year, the Army left the program, citing a need to focus its budget on more immediate aviation programs.[20] The project also faced considerable dialogue in the Senate, surviving two votes that both could have resulted in cancellation.[21][22] Despite the Senate's decision, the Department of Defense instructed the Navy not to spend more money on the Osprey.[23] At the same time, the Bush administration sought the cancellation of the project.[23]
Flight testing and design changes
The first of six MV-22 prototypes first flew on 19 March 1989 in the helicopter mode,[24] and on 14 September 1989 as a fixed-wing plane.[25] The third and fourth prototypes successfully completed the Osprey's first Sea Trials on the USS Wasp in December 1990.[26] However, the fourth and fifth prototypes crashed in 1991-92.[27] Flight tests were resumed in August 1993 after changes were incorporated in the prototypes.[2] From October 1992 until April 1993, Bell and Boeing redesigned the V-22 to reduce empty weight, simplify manufacture and reduce production costs. This redesigned version became the B-model.[28]
Flight testing of four full-scale development V-22s began in early 1997 when the first pre-production V-22 was delivered to the Naval Air Warfare Test Center, Naval Air Station Patuxent River, Maryland. The first EMD flight took place on 5 February 1997. The first of four low rate initial production aircraft, ordered on 28 April 1997, was delivered on 27 May 1999. Osprey number 10 completed the program's second Sea Trials, this time from the USS Saipan in January 1999.[2] During external load testing in April 1999, Boeing used a V-22 to lift and transport the M777 howitzer.[29] In 2000, Boeing announced that the V-22 would be fitted with a nose-mounted GAU-19 Gatling gun,[30] but the GAU-19 gun was later canceled.[31]
In 2000, there were two further fatal crashes, killing a total of 19 Marines, and the production was again halted while the cause of these crashes was investigated and various parts were redesigned.[32] The V-22 completed its final operational evaluation in June 2005. The evaluation was deemed successful; events included long range deployments, high altitude, desert and shipboard operations. The problems identified in various accidents had been addressed.[33]
Controversy
The V-22's development process has been long and controversial, partly due to its large cost increases.[34] When the development budget, first planned for $2.5 billion in 1986, increased to a projected $30 billion in 1988, then-Defense Secretary Dick Cheney tried to zero out its funding. He was eventually overruled by Congress.[32] As of 2008, $27 billion have been spent on the Osprey program and another $27.2 billion will be required to complete planned production numbers by the end of the program.[2]
The V-22 squadron's former commander at Marine Corps Air Station New River, Lt. Colonel Odin Lieberman, was relieved of duty in 2001 after allegations that he instructed his unit that they needed to falsify maintenance records to make the plane appear more reliable.[2][35] Three officers were later implicated in the falsification scandal.[34]
The aircraft is incapable of autorotation, and is therefore unable to land safely in helicopter mode if both engines fail. A director of the Pentagon's testing office in 2005 said that if the Osprey loses power while flying like a helicopter below 1,600 feet (490 m), emergency landings "are not likely to be survivable". But Captain Justin (Moon) McKinney, a V-22 pilot, says that this will not be a problem, "We can turn it into a plane and glide it down, just like a C-130".[31] A complete loss of power would require the failure of both engines, as a drive shaft connects the nacelles through the wing; one engine can power both proprotors.[36] While vortex ring state (VRS) contributed to a deadly V-22 accident, the aircraft is less susceptible to the condition than conventional helicopters and recovers more quickly.[5] The Marines now train new pilots in the recognition of and recovery from VRS and have instituted operational envelope limits and instrumentation to help pilots avoid VRS conditions.[32][37]
It was planned in 2000 to equip all V-22s with a nose-mounted Gatling gun, to provide "the V-22 with a strong defensive firepower capability to greatly increase the aircraft's survivability in hostile actions."[30] The nose gun project was canceled however, leading to criticism by retired Marine Corps Commandant General James L. Jones, who is not satisfied with the current V-22 armament.[31] A belly-mounted turret was later installed on some of the first V-22s sent to the War in Afghanistan in 2009.[38]
With the first combat deployment of the MV-22 in October 2007, Time Magazine ran an article condemning the aircraft as unsafe, overpriced, and completely inadequate.[31] The Marine Corps, however, responded with the assertion that much of the article's data were dated, obsolete, inaccurate, and reflected expectations that ran too high for any new field of aircraft.[39]
Recent development
On 28 September 2005, the Pentagon formally approved full-rate production for the V-22.[40] The plan is to boost production from 11 a year to between 24 and 48 a year by 2012. Of the 458 total planned, 360 are for the Marine Corps, 48 for the Navy, and 50 for the Air Force at an average cost of $110 million per aircraft, including development costs.[2] The V-22 had an incremental flyaway cost of $70 million per aircraft in 2007,[3] but the Navy hopes to shave about $10 million off that cost after a five-year production contract starts in 2008.[41]
The Bell-Boeing Joint Project Office in Amarillo, Texas will design a new integrated avionics processor to resolve electronics obsolescence issues and add new network capabilities.[42]
Design
The Osprey is the world's first production tiltrotor aircraft, with one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. It is classified as a powered lift aircraft by the Federal Aviation Administration.[43] For takeoff and landing, it typically operates as a helicopter with the nacelles vertical (rotors horizontal). Once airborne, the nacelles rotate forward 90° in as little as 12 seconds for horizontal flight, converting the V-22 to a more fuel-efficient, higher-speed turboprop airplane. STOL rolling-takeoff and landing capability is achieved by having the nacelles tilted forward up to 45°. For compact storage and transport, the V-22's wing rotates to align, front-to-back, with the fuselage. The proprotors can also fold in a sequence taking 90 seconds.[44]
Most Osprey missions will use fixed wing flight 75 percent or more of the time, reducing wear and tear on the aircraft and reducing operational costs.[45] This fixed wing flight is higher than typical helicopter missions allowing longer range line-of-sight communications and so improved command and control.[2] Boeing has stated the V-22 design loses 10% of its vertical lift over a Tiltwing design when operating in helicopter mode because of airflow resistance due to the wings, but that the Tiltrotor design has better short takeoff and landing performance.[46]
The V-22 is equipped with a glass cockpit, which incorporates four Multi-function displays (MFDs) and one shared Central Display Unit (CDU), allowing the pilots to display a variety of images including: digimaps centered or decentered on current position, FLIR imagery, primary flight instruments, navigation (TACAN, VOR, ILS, GPS, INS), and system status. The flight director panel of the Cockpit Management System (CMS) allows for fully-coupled (aka: autopilot) functions which will take the aircraft from forward flight into a 50-foot hover with no pilot interaction other than programming the system.[47] The glass cockpit of the canceled CH-46X was derived from the V-22.[48]
The V-22 is a fly-by-wire aircraft with triple-redundant flight control systems.[49] With the nacelles pointing straight up in conversion mode at 90° the flight computers command the aircraft to fly like a helicopter, with cyclic forces being applied to a conventional swashplate at the rotor hub. With the nacelles in airplane mode (0°) the flaperons, rudder, and elevator fly the aircraft like an airplane. This is a gradual transition and occurs over the rotation range of the nacelles. The lower the nacelles, the greater effect of the airplane-mode control surfaces.[50] The nacelles can rotate past vertical to 97.5° for rearward flight.[51][52]
The Osprey can be armed with one M240 7.62x51mm NATO (.308 in caliber) or M2 .50 in caliber (12.7 mm) machine gun on the loading ramp, that can be fired rearward when the ramp is lowered. A GAU-19 three-barrel .50 in gatling gun mounted below the V-22's nose has also been studied for future upgrade.[31][53] BAE Systems developed a remotely operated turreted weapons system for the V-22,[54] which was installed on half of the first V-22s deployed to Afghanistan in 2009.[38] The 7.62 mm belly gun turret is remotely operated by a gunner inside the aircraft, who acquires targets with a separate pod using color television and forward looking infrared imagery.
U.S. Naval Air Systems Command is working on upgrades to increase the maximum speed from 250 knots (460 km/h; 290 mph) to 270 knots (500 km/h; 310 mph), increase helicopter mode altitude limit from 10,000 feet (3,000 m) to 12,000 feet (3,700 m) or 14,000 feet (4,300 m), and increase lift performance.[55]
Operational history
US Marine Corps
Marine Corps crew training on the Osprey has been conducted by VMMT-204 since March 2000. On 3 June 2005, the Marine Corps helicopter squadron Marine Medium Helicopter 263 (HMM-263), stood down to begin the process of transitioning to the MV-22 Osprey.[56] On 8 December 2005, Lieutenant General Amos, commander of the II MEF, accepted the delivery of the first fleet of MV-22s, delivered to HMM-263. The unit reactivated on 3 March 2006 as the first MV-22 squadron and was redesignated VMM-263. On 31 August 2006, VMM-162 (the former HMM-162) followed suit. On 23 March 2007, HMM-266 became Marine Medium Tiltrotor Squadron 266 (VMM-266) at Marine Corps Air Station New River, North Carolina.[57]
The Osprey has been replacing existing CH-46 Sea Knight squadrons.[58] The MV-22 reached initial operational capability (IOC) with the U.S. Marine Corps on 13 June 2007.[1] On 10 July 2007 an MV-22 Osprey landed aboard the Royal Navy aircraft carrier, HMS Illustrious in the Atlantic Ocean. This marked the first time a V-22 had landed on any non-U.S. vessel.[59]
On 13 April 2007, the U.S. Marine Corps announced that it would be sending ten V-22 aircraft to Iraq, the Osprey's first combat deployment. Marine Corps Commandant, General James Conway, indicated that over 150 Marines would accompany the Osprey set for September deployment to Al-Asad Airfield.[60][61] On 17 September 2007, ten MV-22Bs of VMM-263 left for Iraq aboard the USS Wasp. The decision to use a ship rather than use the Osprey's self-deployment capability was made because of concerns over icing during the North Atlantic portion of the trip, lack of available KC-130s for mid-air refueling, and the availability of the USS Wasp.[62]
The Osprey has provided support in Iraq, racking up some 2,000 flight hours over three months with a mission capable availability rate of 68.1% as of late-January 2008.[63] They are primarily used in Iraq's western Anbar province for routine cargo and troop movements, and also for riskier "aero-scout" missions. General David Petraeus, the top U.S. military commander in Iraq, used one to fly around Iraq on Christmas Day 2007 to visit troops.[64] Then-presidential candidate Barack Obama also flew in Ospreys during his high profile 2008 tour of Iraq.[65]
The only major problem has been obtaining the necessary spare parts to maintain the aircraft.[66] The V-22 had flown 3,000 sorties totaling 5,200 hours in Iraq as of July 2008.[67] USMC leadership expect to deploy MV-22s to Afghanistan in 2009.[66][68] General George J. Trautman, III praised the increased range of the V-22 over the legacy helicopters in Iraq and said that "it turned his battle space from the size of Texas into the size of Rhode Island."[69]
Naval Air Systems Command has devised a temporary fix for sailors to place portable heat shields under Osprey engines to prevent damage to the decks of some of the Navy's smaller amphibious ships, but they determined that a long term solution to the problem would require these decks be redesigned with heat resistant deck coatings, passive thermal barriers and changes in ship structure in order to operate V-22s and F-35Bs.[70]
A Government Accountability Office study reported that by January 2009 the Marines had 12 MV-22s operating in Iraq and they managed to successfully complete all assigned missions. The same report found that the V-22 deployments had mission capable rates averaging 57% to 68% and an overall full mission capable rate of only 6%. It also stated that the aircraft had shown weakness in situational awareness, maintenance, shipboard operations and the ability to transport troops and external cargo.[71] That study also concluded that the "deployments confirmed that the V-22’s enhanced speed and range enable personnel and internal cargo to be transported faster and farther than is possible with the legacy helicopters it is replacing".[71]
The MV-22 saw its first offensive combat mission, Operation Cobra's Anger on 4 December 2009. Ospreys assisted in inserting 1,000 Marines and 150 Afghan troops into the Now Zad Valley of Helmand Province in southern Afghanistan to disrupt communication and supply lines of the Taliban.[38] In January 2010 the MV-22 Osprey is being sent to Haiti as part of Operation Unified Response relief efforts after the earthquake there. This will be the first use the Marine V-22 in a humanitarian mission.[72]
US Air Force
The Air Force's first operational CV-22 Osprey was delivered to the 58th Special Operations Wing (58th SOW) at Kirtland Air Force Base, New Mexico on 20 March 2006. This and subsequent aircraft will become part of the 58th SOW's fleet of aircraft used for training pilots and crew members for special operations use.[73] On 16 November 2006, the Air Force officially accepted the CV-22 in a ceremony conducted at Hurlburt Field, Florida.[74]
The US Air Force's first operational deployment of the Osprey sent four CV-22s to Mali in November 2008 in support of Exercise Flintlock. The CV-22s flew nonstop from Hurlburt Field, Florida with in-flight refueling.[5] AFSOC declared that the 8th Special Operations Squadron reached Initial Operational Capability on 16 March 2009, with six of its planned nine CV-22s operational.[75]
In June 2009, CV-22s of the 8th Special Operations Squadron delivered 43,000 pounds (20,000 kg) of humanitarian supplies to remote villages in Honduras that were not accessible by conventional vehicles.[76] In November 2009, the 8th SO Squadron and its six CV-22s returned from a three-month deployment in Iraq.[77]
The first possible combat loss of an Osprey occurred on 9 April, 2010, as a CV-22 went down near Qalat, Zabul Province, Afghanistan, killing four.[78][79]
Potential operators
In 1999 the V-22 was studied for use in the United Kingdom's Royal Navy,[80] it has been raised several times as a candidate for the role of Maritime Airborne Surveillance and Control (MASC).[81]
Israel had shown interest in the purchase of MV-22s, but no order was placed.[82][83] Flightglobal reported in late 2009 that Israel has decided to wait for the CH-53K instead.[84]
The V-22 Osprey is a candidate for the Norwegian All Weather Search and Rescue Helicopter (NAWSARH) that is planned to replace the Westland Sea King Mk.43B of the Royal Norwegian Air Force in 2015.[85] The other candidates for the NAWSARH contract of 10-12 helicopters are AgustaWestland AW101 Merlin, Eurocopter EC225, NHIndustries NH90 and Sikorsky S-92.[86]
Bell Boeing has made an unsolicited offer of the V-22 for US Army medical evacuation needs.[87] However the Joint Personnel Recovery Agency issued a report that said that a common helicopter design would be needed for both combat recovery and medical evacuation and that the V-22 would not be suitable for recovery missions because of the difficulty of hoist operations and lack of self-defense capabilities.[88]
The US Navy remains a potential user of the V-22, but its role and mission with the Navy remains unclear. The latest proposal is to replace the C-2 Greyhound with the V-22 in the fleet logistics role. The V-22 would have the advantage of being able to land on and support non-carriers with rapid delivery of supplies and people between the ships of a taskforce or to ships on patrol beyond helicopter range.[89] Loren B. Thompson of the Lexington Institute has suggested V-22s for use in combat search and rescue and Marine One VIP transport, which also need replacement aircraft.[90]
Variants
• V-22A
•• Pre-production full-scale development aircraft used for flight testing. These are unofficially considered A-variants after 1993 redesign.[91]
• HV-22
•• The U.S. Navy considered an HV-22 to provide combat search and rescue, delivery and retrieval of special warfare teams along with fleet logistic support transport. However, it chose the MH-60S for this role in 1992.[92]
• SV-22
•• The proposed anti-submarine warfare Navy variant. The Navy studied the SV-22 in the 1980s to replace S-3 and SH-2 aircraft.[93]
• MV-22B
•• Basic U.S. Marine Corps transport; original requirement for 552 (now 360). The Marine Corps is the lead service in the development of the V-22 Osprey. The Marine Corps variant, the MV-22B, is an assault transport for troops, equipment and supplies, capable of operating from ships or from expeditionary airfields ashore. It is replacing the Marine Corps' CH-46E[57] and CH-53D.[94]
• CV-22B
•• Air Force variant for the U.S. Special Operations Command (USSOCOM). It will conduct long-range, special operations missions, and is equipped with extra fuel tanks and terrain-following radar.[95][96]
Operators
•• 8th Special Operations Squadron (8 SOS) at Hurlburt Field, Florida
•• 71st Special Operations Squadron (71 SOS) at Kirtland Air Force Base, New Mexico
•• 20th Special Operations Squadron (20 SOS) at Cannon Air Force Base, New Mexico
•• VMM-161
•• VMM-162
•• VMM-261
•• VMM-263
•• VMM-264
•• VMM-266
•• VMM-365
•• VMMT-204 - Training squadron
•• VMX-22 - Marine Tiltrotor Operational Test and Evaluation Squadron
Notable accidents
Main article: Accidents and incidents involving the V-22 Osprey
From 1991 to 2000 there were four significant crashes, and a total of 30 fatalities, during testing.[32] Since becoming operational in 2007, the V-22 has had one possible combat loss due to an unknown cause, no losses due to accidents, and seven other notable, but minor, incidents.
• On 11 June 1991, a mis-wired flight control system led to two minor injuries when the left nacelle struck the ground while the aircraft was hovering 15 feet (4.6 m) in the air, causing it to bounce and catch fire.[97]
• On 20 July 1992, a leaking gearbox led to a fire in the right nacelle, causing the aircraft to drop into the Potomac River in front of an audience of Congressmen and other government officials at Quantico, killing all seven on board and grounding the aircraft for 11 months.[98]
• On 8 April 2000, a V-22 loaded with Marines to simulate a rescue, attempted to land at Marana Northwest Regional Airport in Arizona, stalled when its right rotor entered vortex ring state, rolled over, crashed, and exploded, killing all 19 on board.[37]
• On 11 December 2000, after a catastrophic hydraulic leak and subsequent software instrument failure, a V-22 fell 1,600 feet (490 m) into a forest in Jacksonville, North Carolina, killing all four aboard. This caused the Marine Corps to ground their fleet of eight V-22s, the second grounding that year.[99][100]
Specifications (MV-22B)
Data from Boeing Integrated Defense Systems,[101] Naval Air Systems Command,[102] US Air Force CV-22 fact sheet,[95] Norton,[103] and Bell[104]
General characteristics
• Crew: Four (pilot, copilot and two flight engineers)
• Capacity: 24 troops (seated), 32 troops (floor loaded) or up to 15,000 lb (6,800 kg) of cargo (dual hook)
• Length: 57 ft 4 in (17.5 m)
• Rotor diameter: 38 ft 0 in (11.6 m)
• Wingspan: 45 ft 10 in (14 m)
• Width with rotors: 84 ft 7 in (25.8 m)
• Height: 22 ft 1 in/6.73 m; overall with nacelles vertical (17 ft 11 in/5.5 m; at top of tailfins)
• Disc area: 2,268 ft² (212 m²)
• Wing area: 301.4 ft² (28 m²)
• Empty weight: 33,140 lb (15,032 kg)
• Loaded weight: 47,500 lb (21,500 kg)
• Max takeoff weight: 60,500 lb (27,400 kg)
• Powerplant: 2× Rolls-Royce Allison T406/AE 1107C-Liberty turboshafts, 6,150 hp (4,590 kW) each
Performance
• Maximum speed: 250 knots (460 km/h, 290 mph) at sea level / 305 kn (565 km/h; 351 mph) at 15,000 ft (4,600 m)[105]
• Cruise speed: 241 knots (277 mph, 446 km/h) at sea level
• Range: 879 nmi (1,011 mi, 1,627 km)
• Combat radius: 370 nmi (426 mi, 685 km)
• Ferry range: 1,940 nmi (with auxiliary internal fuel tanks)
• Service ceiling: 26,000 ft (7,925 m)
• Rate of climb: 2,320 ft/min (11.8 m/s)
• Disc loading: 20.9 lb/ft² at 47,500 lb GW (102.23 kg/m²)
• Power/mass: 0.259 hp/lb (427 W/kg)
Armament
• 1× M240 machine gun on ramp, optional
Notable appearances in media
Main article: Aircraft in fiction#V-22 Osprey
See also
• Elizabeth A. Okoreeh-Baah, USMC - first female to pilot a V-22 Osprey
Related development
Comparable aircraft
Related lists
• List of military aircraft of the United States
References
Bibliography
• Markman, Steve and Bill Holder. "Bell/Boeing V-22 Osprey Tilt-Engine VTOL Transport (U.S.A.)". Straight Up: A History of Vertical Flight. Schiffer Publishing, 2000. ISBN 0-7643-1204-9.
• Norton, Bill. Bell Boeing V-22 Osprey, Tiltrotor Tactical Transport. Midland Publishing, 2004. ISBN 1-85780-165-2.
External links
Wikimedia Commons has media related to: V-22 Osprey
• V-22 Osprey web, and www.history.navy.mil/planes/v-22.html
• CV-22 fact sheet on USAF site
• www.globalsecurity.org/military/systems/aircraft/v-22.htm
• www.airforce-technology.com/projects/osprey/
• "Flight of the Osprey", US Navy video of V-22 operations
Pasted from Wikipedia: Bell-Boeing V-22 Osprey
• • • • •
The Bell-Boeing V-22 Osprey is a multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The V-22 originated from the U.S. Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. It was developed jointly by the Bell Helicopter, and Boeing Helicopters team, known as Bell Boeing, which produce the aircraft.[4] The V-22 first flew in 1989, and began years of flight testing and design alterations.
The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007. The Osprey's other operator, the U.S. Air Force fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed for combat operations in Iraq and Afghanistan.
Contents
•• 1.2 Flight testing and design changes
• 2 Design
• 8 Notable appearances in media
Development
Early development
The failure of the Iran hostage rescue mission in 1980 demonstrated to the United States military a need[5] for "a new type of aircraft, that could not only take off and land vertically but also could carry combat troops, and do so at speed."[6] The U.S. Department of Defense began the Joint-service Vertical take-off/landing Experimental (JVX) aircraft program in 1981, under U.S. Army leadership. Later the U.S. Navy/Marine Corps took the lead.[7][8] The JVX combined requirements from the Marine Corps, Air Force, Army and Navy.[9][10] A request for proposals (RFP) was issued in December 1982 for JVX preliminary design work. Interest in the program was expressed by Aérospatiale, Bell Helicopter, Boeing Vertol, Grumman, Lockheed, and Westland. The DoD pushed for contractors to form teams. Bell partnered with Boeing Vertol. The Bell Boeing team submitted a proposal for a enlarged version of the Bell XV-15 prototype on 17 February 1983. This was the only proposal received and a preliminary design contract was awarded on 26 April 1983.[11][12]
The JVX aircraft was designated V-22 Osprey on 15 January 1985; by March that same year the first six prototypes were being produced, and Boeing Vertol was expanded to deal with the project workload.[13][14] Work has been split evenly between Bell and Boeing. Bell Helicopter manufactures and integrates the wing, nacelles, rotors, drive system, tail surfaces, and aft ramp, as well as integrates the Rolls-Royce engines and performs final assembly. Boeing Helicopters manufactures and integrates the fuselage, cockpit, avionics, and flight controls.[4][15] The USMC variant of the Osprey received the MV-22 designation and the Air Force variant received CV-22; reversed from normal procedure to prevent Marine Ospreys from having a conflicting designation with aircraft carriers (CV).[16] Full-scale development of the V-22 tilt-rotor aircraft began in 1986.[2] On 3 May 1986 the Bell-Boeing partnership was awarded a $1.714 billion contract for V-22 aircraft by the Navy, thus at this point the project had acquisition plans with all four arms of the U.S. military.[17]
The first V-22 was rolled out with significant media attention in May 1988.[18][19] However the project suffered several political blows. Firstly in the same year, the Army left the program, citing a need to focus its budget on more immediate aviation programs.[20] The project also faced considerable dialogue in the Senate, surviving two votes that both could have resulted in cancellation.[21][22] Despite the Senate's decision, the Department of Defense instructed the Navy not to spend more money on the Osprey.[23] At the same time, the Bush administration sought the cancellation of the project.[23]
Flight testing and design changes
The first of six MV-22 prototypes first flew on 19 March 1989 in the helicopter mode,[24] and on 14 September 1989 as a fixed-wing plane.[25] The third and fourth prototypes successfully completed the Osprey's first Sea Trials on the USS Wasp in December 1990.[26] However, the fourth and fifth prototypes crashed in 1991-92.[27] Flight tests were resumed in August 1993 after changes were incorporated in the prototypes.[2] From October 1992 until April 1993, Bell and Boeing redesigned the V-22 to reduce empty weight, simplify manufacture and reduce production costs. This redesigned version became the B-model.[28]
Flight testing of four full-scale development V-22s began in early 1997 when the first pre-production V-22 was delivered to the Naval Air Warfare Test Center, Naval Air Station Patuxent River, Maryland. The first EMD flight took place on 5 February 1997. The first of four low rate initial production aircraft, ordered on 28 April 1997, was delivered on 27 May 1999. Osprey number 10 completed the program's second Sea Trials, this time from the USS Saipan in January 1999.[2] During external load testing in April 1999, Boeing used a V-22 to lift and transport the M777 howitzer.[29] In 2000, Boeing announced that the V-22 would be fitted with a nose-mounted GAU-19 Gatling gun,[30] but the GAU-19 gun was later canceled.[31]
In 2000, there were two further fatal crashes, killing a total of 19 Marines, and the production was again halted while the cause of these crashes was investigated and various parts were redesigned.[32] The V-22 completed its final operational evaluation in June 2005. The evaluation was deemed successful; events included long range deployments, high altitude, desert and shipboard operations. The problems identified in various accidents had been addressed.[33]
Controversy
The V-22's development process has been long and controversial, partly due to its large cost increases.[34] When the development budget, first planned for $2.5 billion in 1986, increased to a projected $30 billion in 1988, then-Defense Secretary Dick Cheney tried to zero out its funding. He was eventually overruled by Congress.[32] As of 2008, $27 billion have been spent on the Osprey program and another $27.2 billion will be required to complete planned production numbers by the end of the program.[2]
The V-22 squadron's former commander at Marine Corps Air Station New River, Lt. Colonel Odin Lieberman, was relieved of duty in 2001 after allegations that he instructed his unit that they needed to falsify maintenance records to make the plane appear more reliable.[2][35] Three officers were later implicated in the falsification scandal.[34]
The aircraft is incapable of autorotation, and is therefore unable to land safely in helicopter mode if both engines fail. A director of the Pentagon's testing office in 2005 said that if the Osprey loses power while flying like a helicopter below 1,600 feet (490 m), emergency landings "are not likely to be survivable". But Captain Justin (Moon) McKinney, a V-22 pilot, says that this will not be a problem, "We can turn it into a plane and glide it down, just like a C-130".[31] A complete loss of power would require the failure of both engines, as a drive shaft connects the nacelles through the wing; one engine can power both proprotors.[36] While vortex ring state (VRS) contributed to a deadly V-22 accident, the aircraft is less susceptible to the condition than conventional helicopters and recovers more quickly.[5] The Marines now train new pilots in the recognition of and recovery from VRS and have instituted operational envelope limits and instrumentation to help pilots avoid VRS conditions.[32][37]
It was planned in 2000 to equip all V-22s with a nose-mounted Gatling gun, to provide "the V-22 with a strong defensive firepower capability to greatly increase the aircraft's survivability in hostile actions."[30] The nose gun project was canceled however, leading to criticism by retired Marine Corps Commandant General James L. Jones, who is not satisfied with the current V-22 armament.[31] A belly-mounted turret was later installed on some of the first V-22s sent to the War in Afghanistan in 2009.[38]
With the first combat deployment of the MV-22 in October 2007, Time Magazine ran an article condemning the aircraft as unsafe, overpriced, and completely inadequate.[31] The Marine Corps, however, responded with the assertion that much of the article's data were dated, obsolete, inaccurate, and reflected expectations that ran too high for any new field of aircraft.[39]
Recent development
On 28 September 2005, the Pentagon formally approved full-rate production for the V-22.[40] The plan is to boost production from 11 a year to between 24 and 48 a year by 2012. Of the 458 total planned, 360 are for the Marine Corps, 48 for the Navy, and 50 for the Air Force at an average cost of $110 million per aircraft, including development costs.[2] The V-22 had an incremental flyaway cost of $70 million per aircraft in 2007,[3] but the Navy hopes to shave about $10 million off that cost after a five-year production contract starts in 2008.[41]
The Bell-Boeing Joint Project Office in Amarillo, Texas will design a new integrated avionics processor to resolve electronics obsolescence issues and add new network capabilities.[42]
Design
The Osprey is the world's first production tiltrotor aircraft, with one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. It is classified as a powered lift aircraft by the Federal Aviation Administration.[43] For takeoff and landing, it typically operates as a helicopter with the nacelles vertical (rotors horizontal). Once airborne, the nacelles rotate forward 90° in as little as 12 seconds for horizontal flight, converting the V-22 to a more fuel-efficient, higher-speed turboprop airplane. STOL rolling-takeoff and landing capability is achieved by having the nacelles tilted forward up to 45°. For compact storage and transport, the V-22's wing rotates to align, front-to-back, with the fuselage. The proprotors can also fold in a sequence taking 90 seconds.[44]
Most Osprey missions will use fixed wing flight 75 percent or more of the time, reducing wear and tear on the aircraft and reducing operational costs.[45] This fixed wing flight is higher than typical helicopter missions allowing longer range line-of-sight communications and so improved command and control.[2] Boeing has stated the V-22 design loses 10% of its vertical lift over a Tiltwing design when operating in helicopter mode because of airflow resistance due to the wings, but that the Tiltrotor design has better short takeoff and landing performance.[46]
The V-22 is equipped with a glass cockpit, which incorporates four Multi-function displays (MFDs) and one shared Central Display Unit (CDU), allowing the pilots to display a variety of images including: digimaps centered or decentered on current position, FLIR imagery, primary flight instruments, navigation (TACAN, VOR, ILS, GPS, INS), and system status. The flight director panel of the Cockpit Management System (CMS) allows for fully-coupled (aka: autopilot) functions which will take the aircraft from forward flight into a 50-foot hover with no pilot interaction other than programming the system.[47] The glass cockpit of the canceled CH-46X was derived from the V-22.[48]
The V-22 is a fly-by-wire aircraft with triple-redundant flight control systems.[49] With the nacelles pointing straight up in conversion mode at 90° the flight computers command the aircraft to fly like a helicopter, with cyclic forces being applied to a conventional swashplate at the rotor hub. With the nacelles in airplane mode (0°) the flaperons, rudder, and elevator fly the aircraft like an airplane. This is a gradual transition and occurs over the rotation range of the nacelles. The lower the nacelles, the greater effect of the airplane-mode control surfaces.[50] The nacelles can rotate past vertical to 97.5° for rearward flight.[51][52]
The Osprey can be armed with one M240 7.62x51mm NATO (.308 in caliber) or M2 .50 in caliber (12.7 mm) machine gun on the loading ramp, that can be fired rearward when the ramp is lowered. A GAU-19 three-barrel .50 in gatling gun mounted below the V-22's nose has also been studied for future upgrade.[31][53] BAE Systems developed a remotely operated turreted weapons system for the V-22,[54] which was installed on half of the first V-22s deployed to Afghanistan in 2009.[38] The 7.62 mm belly gun turret is remotely operated by a gunner inside the aircraft, who acquires targets with a separate pod using color television and forward looking infrared imagery.
U.S. Naval Air Systems Command is working on upgrades to increase the maximum speed from 250 knots (460 km/h; 290 mph) to 270 knots (500 km/h; 310 mph), increase helicopter mode altitude limit from 10,000 feet (3,000 m) to 12,000 feet (3,700 m) or 14,000 feet (4,300 m), and increase lift performance.[55]
Operational history
US Marine Corps
Marine Corps crew training on the Osprey has been conducted by VMMT-204 since March 2000. On 3 June 2005, the Marine Corps helicopter squadron Marine Medium Helicopter 263 (HMM-263), stood down to begin the process of transitioning to the MV-22 Osprey.[56] On 8 December 2005, Lieutenant General Amos, commander of the II MEF, accepted the delivery of the first fleet of MV-22s, delivered to HMM-263. The unit reactivated on 3 March 2006 as the first MV-22 squadron and was redesignated VMM-263. On 31 August 2006, VMM-162 (the former HMM-162) followed suit. On 23 March 2007, HMM-266 became Marine Medium Tiltrotor Squadron 266 (VMM-266) at Marine Corps Air Station New River, North Carolina.[57]
The Osprey has been replacing existing CH-46 Sea Knight squadrons.[58] The MV-22 reached initial operational capability (IOC) with the U.S. Marine Corps on 13 June 2007.[1] On 10 July 2007 an MV-22 Osprey landed aboard the Royal Navy aircraft carrier, HMS Illustrious in the Atlantic Ocean. This marked the first time a V-22 had landed on any non-U.S. vessel.[59]
On 13 April 2007, the U.S. Marine Corps announced that it would be sending ten V-22 aircraft to Iraq, the Osprey's first combat deployment. Marine Corps Commandant, General James Conway, indicated that over 150 Marines would accompany the Osprey set for September deployment to Al-Asad Airfield.[60][61] On 17 September 2007, ten MV-22Bs of VMM-263 left for Iraq aboard the USS Wasp. The decision to use a ship rather than use the Osprey's self-deployment capability was made because of concerns over icing during the North Atlantic portion of the trip, lack of available KC-130s for mid-air refueling, and the availability of the USS Wasp.[62]
The Osprey has provided support in Iraq, racking up some 2,000 flight hours over three months with a mission capable availability rate of 68.1% as of late-January 2008.[63] They are primarily used in Iraq's western Anbar province for routine cargo and troop movements, and also for riskier "aero-scout" missions. General David Petraeus, the top U.S. military commander in Iraq, used one to fly around Iraq on Christmas Day 2007 to visit troops.[64] Then-presidential candidate Barack Obama also flew in Ospreys during his high profile 2008 tour of Iraq.[65]
The only major problem has been obtaining the necessary spare parts to maintain the aircraft.[66] The V-22 had flown 3,000 sorties totaling 5,200 hours in Iraq as of July 2008.[67] USMC leadership expect to deploy MV-22s to Afghanistan in 2009.[66][68] General George J. Trautman, III praised the increased range of the V-22 over the legacy helicopters in Iraq and said that "it turned his battle space from the size of Texas into the size of Rhode Island."[69]
Naval Air Systems Command has devised a temporary fix for sailors to place portable heat shields under Osprey engines to prevent damage to the decks of some of the Navy's smaller amphibious ships, but they determined that a long term solution to the problem would require these decks be redesigned with heat resistant deck coatings, passive thermal barriers and changes in ship structure in order to operate V-22s and F-35Bs.[70]
A Government Accountability Office study reported that by January 2009 the Marines had 12 MV-22s operating in Iraq and they managed to successfully complete all assigned missions. The same report found that the V-22 deployments had mission capable rates averaging 57% to 68% and an overall full mission capable rate of only 6%. It also stated that the aircraft had shown weakness in situational awareness, maintenance, shipboard operations and the ability to transport troops and external cargo.[71] That study also concluded that the "deployments confirmed that the V-22’s enhanced speed and range enable personnel and internal cargo to be transported faster and farther than is possible with the legacy helicopters it is replacing".[71]
The MV-22 saw its first offensive combat mission, Operation Cobra's Anger on 4 December 2009. Ospreys assisted in inserting 1,000 Marines and 150 Afghan troops into the Now Zad Valley of Helmand Province in southern Afghanistan to disrupt communication and supply lines of the Taliban.[38] In January 2010 the MV-22 Osprey is being sent to Haiti as part of Operation Unified Response relief efforts after the earthquake there. This will be the first use the Marine V-22 in a humanitarian mission.[72]
US Air Force
The Air Force's first operational CV-22 Osprey was delivered to the 58th Special Operations Wing (58th SOW) at Kirtland Air Force Base, New Mexico on 20 March 2006. This and subsequent aircraft will become part of the 58th SOW's fleet of aircraft used for training pilots and crew members for special operations use.[73] On 16 November 2006, the Air Force officially accepted the CV-22 in a ceremony conducted at Hurlburt Field, Florida.[74]
The US Air Force's first operational deployment of the Osprey sent four CV-22s to Mali in November 2008 in support of Exercise Flintlock. The CV-22s flew nonstop from Hurlburt Field, Florida with in-flight refueling.[5] AFSOC declared that the 8th Special Operations Squadron reached Initial Operational Capability on 16 March 2009, with six of its planned nine CV-22s operational.[75]
In June 2009, CV-22s of the 8th Special Operations Squadron delivered 43,000 pounds (20,000 kg) of humanitarian supplies to remote villages in Honduras that were not accessible by conventional vehicles.[76] In November 2009, the 8th SO Squadron and its six CV-22s returned from a three-month deployment in Iraq.[77]
The first possible combat loss of an Osprey occurred on 9 April, 2010, as a CV-22 went down near Qalat, Zabul Province, Afghanistan, killing four.[78][79]
Potential operators
In 1999 the V-22 was studied for use in the United Kingdom's Royal Navy,[80] it has been raised several times as a candidate for the role of Maritime Airborne Surveillance and Control (MASC).[81]
Israel had shown interest in the purchase of MV-22s, but no order was placed.[82][83] Flightglobal reported in late 2009 that Israel has decided to wait for the CH-53K instead.[84]
The V-22 Osprey is a candidate for the Norwegian All Weather Search and Rescue Helicopter (NAWSARH) that is planned to replace the Westland Sea King Mk.43B of the Royal Norwegian Air Force in 2015.[85] The other candidates for the NAWSARH contract of 10-12 helicopters are AgustaWestland AW101 Merlin, Eurocopter EC225, NHIndustries NH90 and Sikorsky S-92.[86]
Bell Boeing has made an unsolicited offer of the V-22 for US Army medical evacuation needs.[87] However the Joint Personnel Recovery Agency issued a report that said that a common helicopter design would be needed for both combat recovery and medical evacuation and that the V-22 would not be suitable for recovery missions because of the difficulty of hoist operations and lack of self-defense capabilities.[88]
The US Navy remains a potential user of the V-22, but its role and mission with the Navy remains unclear. The latest proposal is to replace the C-2 Greyhound with the V-22 in the fleet logistics role. The V-22 would have the advantage of being able to land on and support non-carriers with rapid delivery of supplies and people between the ships of a taskforce or to ships on patrol beyond helicopter range.[89] Loren B. Thompson of the Lexington Institute has suggested V-22s for use in combat search and rescue and Marine One VIP transport, which also need replacement aircraft.[90]
Variants
• V-22A
•• Pre-production full-scale development aircraft used for flight testing. These are unofficially considered A-variants after 1993 redesign.[91]
• HV-22
•• The U.S. Navy considered an HV-22 to provide combat search and rescue, delivery and retrieval of special warfare teams along with fleet logistic support transport. However, it chose the MH-60S for this role in 1992.[92]
• SV-22
•• The proposed anti-submarine warfare Navy variant. The Navy studied the SV-22 in the 1980s to replace S-3 and SH-2 aircraft.[93]
• MV-22B
•• Basic U.S. Marine Corps transport; original requirement for 552 (now 360). The Marine Corps is the lead service in the development of the V-22 Osprey. The Marine Corps variant, the MV-22B, is an assault transport for troops, equipment and supplies, capable of operating from ships or from expeditionary airfields ashore. It is replacing the Marine Corps' CH-46E[57] and CH-53D.[94]
• CV-22B
•• Air Force variant for the U.S. Special Operations Command (USSOCOM). It will conduct long-range, special operations missions, and is equipped with extra fuel tanks and terrain-following radar.[95][96]
Operators
•• 8th Special Operations Squadron (8 SOS) at Hurlburt Field, Florida
•• 71st Special Operations Squadron (71 SOS) at Kirtland Air Force Base, New Mexico
•• 20th Special Operations Squadron (20 SOS) at Cannon Air Force Base, New Mexico
•• VMM-161
•• VMM-162
•• VMM-261
•• VMM-263
•• VMM-264
•• VMM-266
•• VMM-365
•• VMMT-204 - Training squadron
•• VMX-22 - Marine Tiltrotor Operational Test and Evaluation Squadron
Notable accidents
Main article: Accidents and incidents involving the V-22 Osprey
From 1991 to 2000 there were four significant crashes, and a total of 30 fatalities, during testing.[32] Since becoming operational in 2007, the V-22 has had one possible combat loss due to an unknown cause, no losses due to accidents, and seven other notable, but minor, incidents.
• On 11 June 1991, a mis-wired flight control system led to two minor injuries when the left nacelle struck the ground while the aircraft was hovering 15 feet (4.6 m) in the air, causing it to bounce and catch fire.[97]
• On 20 July 1992, a leaking gearbox led to a fire in the right nacelle, causing the aircraft to drop into the Potomac River in front of an audience of Congressmen and other government officials at Quantico, killing all seven on board and grounding the aircraft for 11 months.[98]
• On 8 April 2000, a V-22 loaded with Marines to simulate a rescue, attempted to land at Marana Northwest Regional Airport in Arizona, stalled when its right rotor entered vortex ring state, rolled over, crashed, and exploded, killing all 19 on board.[37]
• On 11 December 2000, after a catastrophic hydraulic leak and subsequent software instrument failure, a V-22 fell 1,600 feet (490 m) into a forest in Jacksonville, North Carolina, killing all four aboard. This caused the Marine Corps to ground their fleet of eight V-22s, the second grounding that year.[99][100]
Specifications (MV-22B)
Data from Boeing Integrated Defense Systems,[101] Naval Air Systems Command,[102] US Air Force CV-22 fact sheet,[95] Norton,[103] and Bell[104]
General characteristics
• Crew: Four (pilot, copilot and two flight engineers)
• Capacity: 24 troops (seated), 32 troops (floor loaded) or up to 15,000 lb (6,800 kg) of cargo (dual hook)
• Length: 57 ft 4 in (17.5 m)
• Rotor diameter: 38 ft 0 in (11.6 m)
• Wingspan: 45 ft 10 in (14 m)
• Width with rotors: 84 ft 7 in (25.8 m)
• Height: 22 ft 1 in/6.73 m; overall with nacelles vertical (17 ft 11 in/5.5 m; at top of tailfins)
• Disc area: 2,268 ft² (212 m²)
• Wing area: 301.4 ft² (28 m²)
• Empty weight: 33,140 lb (15,032 kg)
• Loaded weight: 47,500 lb (21,500 kg)
• Max takeoff weight: 60,500 lb (27,400 kg)
• Powerplant: 2× Rolls-Royce Allison T406/AE 1107C-Liberty turboshafts, 6,150 hp (4,590 kW) each
Performance
• Maximum speed: 250 knots (460 km/h, 290 mph) at sea level / 305 kn (565 km/h; 351 mph) at 15,000 ft (4,600 m)[105]
• Cruise speed: 241 knots (277 mph, 446 km/h) at sea level
• Range: 879 nmi (1,011 mi, 1,627 km)
• Combat radius: 370 nmi (426 mi, 685 km)
• Ferry range: 1,940 nmi (with auxiliary internal fuel tanks)
• Service ceiling: 26,000 ft (7,925 m)
• Rate of climb: 2,320 ft/min (11.8 m/s)
• Disc loading: 20.9 lb/ft² at 47,500 lb GW (102.23 kg/m²)
• Power/mass: 0.259 hp/lb (427 W/kg)
Armament
• 1× M240 machine gun on ramp, optional
Notable appearances in media
Main article: Aircraft in fiction#V-22 Osprey
See also
• Elizabeth A. Okoreeh-Baah, USMC - first female to pilot a V-22 Osprey
Related development
Comparable aircraft
Related lists
• List of military aircraft of the United States
References
Bibliography
• Markman, Steve and Bill Holder. "Bell/Boeing V-22 Osprey Tilt-Engine VTOL Transport (U.S.A.)". Straight Up: A History of Vertical Flight. Schiffer Publishing, 2000. ISBN 0-7643-1204-9.
• Norton, Bill. Bell Boeing V-22 Osprey, Tiltrotor Tactical Transport. Midland Publishing, 2004. ISBN 1-85780-165-2.
External links
Wikimedia Commons has media related to: V-22 Osprey
• V-22 Osprey web, and www.history.navy.mil/planes/v-22.html
• CV-22 fact sheet on USAF site
• www.globalsecurity.org/military/systems/aircraft/v-22.htm
• www.airforce-technology.com/projects/osprey/
• "Flight of the Osprey", US Navy video of V-22 operations
Pasted from Wikipedia: Bell-Boeing V-22 Osprey
• • • • •
The Bell-Boeing V-22 Osprey is a multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The V-22 originated from the U.S. Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. It was developed jointly by the Bell Helicopter, and Boeing Helicopters team, known as Bell Boeing, which produce the aircraft.[4] The V-22 first flew in 1989, and began years of flight testing and design alterations.
The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007. The Osprey's other operator, the U.S. Air Force fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed for combat operations in Iraq and Afghanistan.
Contents
•• 1.2 Flight testing and design changes
• 2 Design
• 8 Notable appearances in media
Development
Early development
The failure of the Iran hostage rescue mission in 1980 demonstrated to the United States military a need[5] for "a new type of aircraft, that could not only take off and land vertically but also could carry combat troops, and do so at speed."[6] The U.S. Department of Defense began the Joint-service Vertical take-off/landing Experimental (JVX) aircraft program in 1981, under U.S. Army leadership. Later the U.S. Navy/Marine Corps took the lead.[7][8] The JVX combined requirements from the Marine Corps, Air Force, Army and Navy.[9][10] A request for proposals (RFP) was issued in December 1982 for JVX preliminary design work. Interest in the program was expressed by Aérospatiale, Bell Helicopter, Boeing Vertol, Grumman, Lockheed, and Westland. The DoD pushed for contractors to form teams. Bell partnered with Boeing Vertol. The Bell Boeing team submitted a proposal for a enlarged version of the Bell XV-15 prototype on 17 February 1983. This was the only proposal received and a preliminary design contract was awarded on 26 April 1983.[11][12]
The JVX aircraft was designated V-22 Osprey on 15 January 1985; by March that same year the first six prototypes were being produced, and Boeing Vertol was expanded to deal with the project workload.[13][14] Work has been split evenly between Bell and Boeing. Bell Helicopter manufactures and integrates the wing, nacelles, rotors, drive system, tail surfaces, and aft ramp, as well as integrates the Rolls-Royce engines and performs final assembly. Boeing Helicopters manufactures and integrates the fuselage, cockpit, avionics, and flight controls.[4][15] The USMC variant of the Osprey received the MV-22 designation and the Air Force variant received CV-22; reversed from normal procedure to prevent Marine Ospreys from having a conflicting designation with aircraft carriers (CV).[16] Full-scale development of the V-22 tilt-rotor aircraft began in 1986.[2] On 3 May 1986 the Bell-Boeing partnership was awarded a $1.714 billion contract for V-22 aircraft by the Navy, thus at this point the project had acquisition plans with all four arms of the U.S. military.[17]
The first V-22 was rolled out with significant media attention in May 1988.[18][19] However the project suffered several political blows. Firstly in the same year, the Army left the program, citing a need to focus its budget on more immediate aviation programs.[20] The project also faced considerable dialogue in the Senate, surviving two votes that both could have resulted in cancellation.[21][22] Despite the Senate's decision, the Department of Defense instructed the Navy not to spend more money on the Osprey.[23] At the same time, the Bush administration sought the cancellation of the project.[23]
Flight testing and design changes
The first of six MV-22 prototypes first flew on 19 March 1989 in the helicopter mode,[24] and on 14 September 1989 as a fixed-wing plane.[25] The third and fourth prototypes successfully completed the Osprey's first Sea Trials on the USS Wasp in December 1990.[26] However, the fourth and fifth prototypes crashed in 1991-92.[27] Flight tests were resumed in August 1993 after changes were incorporated in the prototypes.[2] From October 1992 until April 1993, Bell and Boeing redesigned the V-22 to reduce empty weight, simplify manufacture and reduce production costs. This redesigned version became the B-model.[28]
Flight testing of four full-scale development V-22s began in early 1997 when the first pre-production V-22 was delivered to the Naval Air Warfare Test Center, Naval Air Station Patuxent River, Maryland. The first EMD flight took place on 5 February 1997. The first of four low rate initial production aircraft, ordered on 28 April 1997, was delivered on 27 May 1999. Osprey number 10 completed the program's second Sea Trials, this time from the USS Saipan in January 1999.[2] During external load testing in April 1999, Boeing used a V-22 to lift and transport the M777 howitzer.[29] In 2000, Boeing announced that the V-22 would be fitted with a nose-mounted GAU-19 Gatling gun,[30] but the GAU-19 gun was later canceled.[31]
In 2000, there were two further fatal crashes, killing a total of 19 Marines, and the production was again halted while the cause of these crashes was investigated and various parts were redesigned.[32] The V-22 completed its final operational evaluation in June 2005. The evaluation was deemed successful; events included long range deployments, high altitude, desert and shipboard operations. The problems identified in various accidents had been addressed.[33]
Controversy
The V-22's development process has been long and controversial, partly due to its large cost increases.[34] When the development budget, first planned for $2.5 billion in 1986, increased to a projected $30 billion in 1988, then-Defense Secretary Dick Cheney tried to zero out its funding. He was eventually overruled by Congress.[32] As of 2008, $27 billion have been spent on the Osprey program and another $27.2 billion will be required to complete planned production numbers by the end of the program.[2]
The V-22 squadron's former commander at Marine Corps Air Station New River, Lt. Colonel Odin Lieberman, was relieved of duty in 2001 after allegations that he instructed his unit that they needed to falsify maintenance records to make the plane appear more reliable.[2][35] Three officers were later implicated in the falsification scandal.[34]
The aircraft is incapable of autorotation, and is therefore unable to land safely in helicopter mode if both engines fail. A director of the Pentagon's testing office in 2005 said that if the Osprey loses power while flying like a helicopter below 1,600 feet (490 m), emergency landings "are not likely to be survivable". But Captain Justin (Moon) McKinney, a V-22 pilot, says that this will not be a problem, "We can turn it into a plane and glide it down, just like a C-130".[31] A complete loss of power would require the failure of both engines, as a drive shaft connects the nacelles through the wing; one engine can power both proprotors.[36] While vortex ring state (VRS) contributed to a deadly V-22 accident, the aircraft is less susceptible to the condition than conventional helicopters and recovers more quickly.[5] The Marines now train new pilots in the recognition of and recovery from VRS and have instituted operational envelope limits and instrumentation to help pilots avoid VRS conditions.[32][37]
It was planned in 2000 to equip all V-22s with a nose-mounted Gatling gun, to provide "the V-22 with a strong defensive firepower capability to greatly increase the aircraft's survivability in hostile actions."[30] The nose gun project was canceled however, leading to criticism by retired Marine Corps Commandant General James L. Jones, who is not satisfied with the current V-22 armament.[31] A belly-mounted turret was later installed on some of the first V-22s sent to the War in Afghanistan in 2009.[38]
With the first combat deployment of the MV-22 in October 2007, Time Magazine ran an article condemning the aircraft as unsafe, overpriced, and completely inadequate.[31] The Marine Corps, however, responded with the assertion that much of the article's data were dated, obsolete, inaccurate, and reflected expectations that ran too high for any new field of aircraft.[39]
Recent development
On 28 September 2005, the Pentagon formally approved full-rate production for the V-22.[40] The plan is to boost production from 11 a year to between 24 and 48 a year by 2012. Of the 458 total planned, 360 are for the Marine Corps, 48 for the Navy, and 50 for the Air Force at an average cost of $110 million per aircraft, including development costs.[2] The V-22 had an incremental flyaway cost of $70 million per aircraft in 2007,[3] but the Navy hopes to shave about $10 million off that cost after a five-year production contract starts in 2008.[41]
The Bell-Boeing Joint Project Office in Amarillo, Texas will design a new integrated avionics processor to resolve electronics obsolescence issues and add new network capabilities.[42]
Design
The Osprey is the world's first production tiltrotor aircraft, with one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. It is classified as a powered lift aircraft by the Federal Aviation Administration.[43] For takeoff and landing, it typically operates as a helicopter with the nacelles vertical (rotors horizontal). Once airborne, the nacelles rotate forward 90° in as little as 12 seconds for horizontal flight, converting the V-22 to a more fuel-efficient, higher-speed turboprop airplane. STOL rolling-takeoff and landing capability is achieved by having the nacelles tilted forward up to 45°. For compact storage and transport, the V-22's wing rotates to align, front-to-back, with the fuselage. The proprotors can also fold in a sequence taking 90 seconds.[44]
Most Osprey missions will use fixed wing flight 75 percent or more of the time, reducing wear and tear on the aircraft and reducing operational costs.[45] This fixed wing flight is higher than typical helicopter missions allowing longer range line-of-sight communications and so improved command and control.[2] Boeing has stated the V-22 design loses 10% of its vertical lift over a Tiltwing design when operating in helicopter mode because of airflow resistance due to the wings, but that the Tiltrotor design has better short takeoff and landing performance.[46]
The V-22 is equipped with a glass cockpit, which incorporates four Multi-function displays (MFDs) and one shared Central Display Unit (CDU), allowing the pilots to display a variety of images including: digimaps centered or decentered on current position, FLIR imagery, primary flight instruments, navigation (TACAN, VOR, ILS, GPS, INS), and system status. The flight director panel of the Cockpit Management System (CMS) allows for fully-coupled (aka: autopilot) functions which will take the aircraft from forward flight into a 50-foot hover with no pilot interaction other than programming the system.[47] The glass cockpit of the canceled CH-46X was derived from the V-22.[48]
The V-22 is a fly-by-wire aircraft with triple-redundant flight control systems.[49] With the nacelles pointing straight up in conversion mode at 90° the flight computers command the aircraft to fly like a helicopter, with cyclic forces being applied to a conventional swashplate at the rotor hub. With the nacelles in airplane mode (0°) the flaperons, rudder, and elevator fly the aircraft like an airplane. This is a gradual transition and occurs over the rotation range of the nacelles. The lower the nacelles, the greater effect of the airplane-mode control surfaces.[50] The nacelles can rotate past vertical to 97.5° for rearward flight.[51][52]
The Osprey can be armed with one M240 7.62x51mm NATO (.308 in caliber) or M2 .50 in caliber (12.7 mm) machine gun on the loading ramp, that can be fired rearward when the ramp is lowered. A GAU-19 three-barrel .50 in gatling gun mounted below the V-22's nose has also been studied for future upgrade.[31][53] BAE Systems developed a remotely operated turreted weapons system for the V-22,[54] which was installed on half of the first V-22s deployed to Afghanistan in 2009.[38] The 7.62 mm belly gun turret is remotely operated by a gunner inside the aircraft, who acquires targets with a separate pod using color television and forward looking infrared imagery.
U.S. Naval Air Systems Command is working on upgrades to increase the maximum speed from 250 knots (460 km/h; 290 mph) to 270 knots (500 km/h; 310 mph), increase helicopter mode altitude limit from 10,000 feet (3,000 m) to 12,000 feet (3,700 m) or 14,000 feet (4,300 m), and increase lift performance.[55]
Operational history
US Marine Corps
Marine Corps crew training on the Osprey has been conducted by VMMT-204 since March 2000. On 3 June 2005, the Marine Corps helicopter squadron Marine Medium Helicopter 263 (HMM-263), stood down to begin the process of transitioning to the MV-22 Osprey.[56] On 8 December 2005, Lieutenant General Amos, commander of the II MEF, accepted the delivery of the first fleet of MV-22s, delivered to HMM-263. The unit reactivated on 3 March 2006 as the first MV-22 squadron and was redesignated VMM-263. On 31 August 2006, VMM-162 (the former HMM-162) followed suit. On 23 March 2007, HMM-266 became Marine Medium Tiltrotor Squadron 266 (VMM-266) at Marine Corps Air Station New River, North Carolina.[57]
The Osprey has been replacing existing CH-46 Sea Knight squadrons.[58] The MV-22 reached initial operational capability (IOC) with the U.S. Marine Corps on 13 June 2007.[1] On 10 July 2007 an MV-22 Osprey landed aboard the Royal Navy aircraft carrier, HMS Illustrious in the Atlantic Ocean. This marked the first time a V-22 had landed on any non-U.S. vessel.[59]
On 13 April 2007, the U.S. Marine Corps announced that it would be sending ten V-22 aircraft to Iraq, the Osprey's first combat deployment. Marine Corps Commandant, General James Conway, indicated that over 150 Marines would accompany the Osprey set for September deployment to Al-Asad Airfield.[60][61] On 17 September 2007, ten MV-22Bs of VMM-263 left for Iraq aboard the USS Wasp. The decision to use a ship rather than use the Osprey's self-deployment capability was made because of concerns over icing during the North Atlantic portion of the trip, lack of available KC-130s for mid-air refueling, and the availability of the USS Wasp.[62]
The Osprey has provided support in Iraq, racking up some 2,000 flight hours over three months with a mission capable availability rate of 68.1% as of late-January 2008.[63] They are primarily used in Iraq's western Anbar province for routine cargo and troop movements, and also for riskier "aero-scout" missions. General David Petraeus, the top U.S. military commander in Iraq, used one to fly around Iraq on Christmas Day 2007 to visit troops.[64] Then-presidential candidate Barack Obama also flew in Ospreys during his high profile 2008 tour of Iraq.[65]
The only major problem has been obtaining the necessary spare parts to maintain the aircraft.[66] The V-22 had flown 3,000 sorties totaling 5,200 hours in Iraq as of July 2008.[67] USMC leadership expect to deploy MV-22s to Afghanistan in 2009.[66][68] General George J. Trautman, III praised the increased range of the V-22 over the legacy helicopters in Iraq and said that "it turned his battle space from the size of Texas into the size of Rhode Island."[69]
Naval Air Systems Command has devised a temporary fix for sailors to place portable heat shields under Osprey engines to prevent damage to the decks of some of the Navy's smaller amphibious ships, but they determined that a long term solution to the problem would require these decks be redesigned with heat resistant deck coatings, passive thermal barriers and changes in ship structure in order to operate V-22s and F-35Bs.[70]
A Government Accountability Office study reported that by January 2009 the Marines had 12 MV-22s operating in Iraq and they managed to successfully complete all assigned missions. The same report found that the V-22 deployments had mission capable rates averaging 57% to 68% and an overall full mission capable rate of only 6%. It also stated that the aircraft had shown weakness in situational awareness, maintenance, shipboard operations and the ability to transport troops and external cargo.[71] That study also concluded that the "deployments confirmed that the V-22’s enhanced speed and range enable personnel and internal cargo to be transported faster and farther than is possible with the legacy helicopters it is replacing".[71]
The MV-22 saw its first offensive combat mission, Operation Cobra's Anger on 4 December 2009. Ospreys assisted in inserting 1,000 Marines and 150 Afghan troops into the Now Zad Valley of Helmand Province in southern Afghanistan to disrupt communication and supply lines of the Taliban.[38] In January 2010 the MV-22 Osprey is being sent to Haiti as part of Operation Unified Response relief efforts after the earthquake there. This will be the first use the Marine V-22 in a humanitarian mission.[72]
US Air Force
The Air Force's first operational CV-22 Osprey was delivered to the 58th Special Operations Wing (58th SOW) at Kirtland Air Force Base, New Mexico on 20 March 2006. This and subsequent aircraft will become part of the 58th SOW's fleet of aircraft used for training pilots and crew members for special operations use.[73] On 16 November 2006, the Air Force officially accepted the CV-22 in a ceremony conducted at Hurlburt Field, Florida.[74]
The US Air Force's first operational deployment of the Osprey sent four CV-22s to Mali in November 2008 in support of Exercise Flintlock. The CV-22s flew nonstop from Hurlburt Field, Florida with in-flight refueling.[5] AFSOC declared that the 8th Special Operations Squadron reached Initial Operational Capability on 16 March 2009, with six of its planned nine CV-22s operational.[75]
In June 2009, CV-22s of the 8th Special Operations Squadron delivered 43,000 pounds (20,000 kg) of humanitarian supplies to remote villages in Honduras that were not accessible by conventional vehicles.[76] In November 2009, the 8th SO Squadron and its six CV-22s returned from a three-month deployment in Iraq.[77]
The first possible combat loss of an Osprey occurred on 9 April, 2010, as a CV-22 went down near Qalat, Zabul Province, Afghanistan, killing four.[78][79]
Potential operators
In 1999 the V-22 was studied for use in the United Kingdom's Royal Navy,[80] it has been raised several times as a candidate for the role of Maritime Airborne Surveillance and Control (MASC).[81]
Israel had shown interest in the purchase of MV-22s, but no order was placed.[82][83] Flightglobal reported in late 2009 that Israel has decided to wait for the CH-53K instead.[84]
The V-22 Osprey is a candidate for the Norwegian All Weather Search and Rescue Helicopter (NAWSARH) that is planned to replace the Westland Sea King Mk.43B of the Royal Norwegian Air Force in 2015.[85] The other candidates for the NAWSARH contract of 10-12 helicopters are AgustaWestland AW101 Merlin, Eurocopter EC225, NHIndustries NH90 and Sikorsky S-92.[86]
Bell Boeing has made an unsolicited offer of the V-22 for US Army medical evacuation needs.[87] However the Joint Personnel Recovery Agency issued a report that said that a common helicopter design would be needed for both combat recovery and medical evacuation and that the V-22 would not be suitable for recovery missions because of the difficulty of hoist operations and lack of self-defense capabilities.[88]
The US Navy remains a potential user of the V-22, but its role and mission with the Navy remains unclear. The latest proposal is to replace the C-2 Greyhound with the V-22 in the fleet logistics role. The V-22 would have the advantage of being able to land on and support non-carriers with rapid delivery of supplies and people between the ships of a taskforce or to ships on patrol beyond helicopter range.[89] Loren B. Thompson of the Lexington Institute has suggested V-22s for use in combat search and rescue and Marine One VIP transport, which also need replacement aircraft.[90]
Variants
• V-22A
•• Pre-production full-scale development aircraft used for flight testing. These are unofficially considered A-variants after 1993 redesign.[91]
• HV-22
•• The U.S. Navy considered an HV-22 to provide combat search and rescue, delivery and retrieval of special warfare teams along with fleet logistic support transport. However, it chose the MH-60S for this role in 1992.[92]
• SV-22
•• The proposed anti-submarine warfare Navy variant. The Navy studied the SV-22 in the 1980s to replace S-3 and SH-2 aircraft.[93]
• MV-22B
•• Basic U.S. Marine Corps transport; original requirement for 552 (now 360). The Marine Corps is the lead service in the development of the V-22 Osprey. The Marine Corps variant, the MV-22B, is an assault transport for troops, equipment and supplies, capable of operating from ships or from expeditionary airfields ashore. It is replacing the Marine Corps' CH-46E[57] and CH-53D.[94]
• CV-22B
•• Air Force variant for the U.S. Special Operations Command (USSOCOM). It will conduct long-range, special operations missions, and is equipped with extra fuel tanks and terrain-following radar.[95][96]
Operators
•• 8th Special Operations Squadron (8 SOS) at Hurlburt Field, Florida
•• 71st Special Operations Squadron (71 SOS) at Kirtland Air Force Base, New Mexico
•• 20th Special Operations Squadron (20 SOS) at Cannon Air Force Base, New Mexico
•• VMM-161
•• VMM-162
•• VMM-261
•• VMM-263
•• VMM-264
•• VMM-266
•• VMM-365
•• VMMT-204 - Training squadron
•• VMX-22 - Marine Tiltrotor Operational Test and Evaluation Squadron
Notable accidents
Main article: Accidents and incidents involving the V-22 Osprey
From 1991 to 2000 there were four significant crashes, and a total of 30 fatalities, during testing.[32] Since becoming operational in 2007, the V-22 has had one possible combat loss due to an unknown cause, no losses due to accidents, and seven other notable, but minor, incidents.
• On 11 June 1991, a mis-wired flight control system led to two minor injuries when the left nacelle struck the ground while the aircraft was hovering 15 feet (4.6 m) in the air, causing it to bounce and catch fire.[97]
• On 20 July 1992, a leaking gearbox led to a fire in the right nacelle, causing the aircraft to drop into the Potomac River in front of an audience of Congressmen and other government officials at Quantico, killing all seven on board and grounding the aircraft for 11 months.[98]
• On 8 April 2000, a V-22 loaded with Marines to simulate a rescue, attempted to land at Marana Northwest Regional Airport in Arizona, stalled when its right rotor entered vortex ring state, rolled over, crashed, and exploded, killing all 19 on board.[37]
• On 11 December 2000, after a catastrophic hydraulic leak and subsequent software instrument failure, a V-22 fell 1,600 feet (490 m) into a forest in Jacksonville, North Carolina, killing all four aboard. This caused the Marine Corps to ground their fleet of eight V-22s, the second grounding that year.[99][100]
Specifications (MV-22B)
Data from Boeing Integrated Defense Systems,[101] Naval Air Systems Command,[102] US Air Force CV-22 fact sheet,[95] Norton,[103] and Bell[104]
General characteristics
• Crew: Four (pilot, copilot and two flight engineers)
• Capacity: 24 troops (seated), 32 troops (floor loaded) or up to 15,000 lb (6,800 kg) of cargo (dual hook)
• Length: 57 ft 4 in (17.5 m)
• Rotor diameter: 38 ft 0 in (11.6 m)
• Wingspan: 45 ft 10 in (14 m)
• Width with rotors: 84 ft 7 in (25.8 m)
• Height: 22 ft 1 in/6.73 m; overall with nacelles vertical (17 ft 11 in/5.5 m; at top of tailfins)
• Disc area: 2,268 ft² (212 m²)
• Wing area: 301.4 ft² (28 m²)
• Empty weight: 33,140 lb (15,032 kg)
• Loaded weight: 47,500 lb (21,500 kg)
• Max takeoff weight: 60,500 lb (27,400 kg)
• Powerplant: 2× Rolls-Royce Allison T406/AE 1107C-Liberty turboshafts, 6,150 hp (4,590 kW) each
Performance
• Maximum speed: 250 knots (460 km/h, 290 mph) at sea level / 305 kn (565 km/h; 351 mph) at 15,000 ft (4,600 m)[105]
• Cruise speed: 241 knots (277 mph, 446 km/h) at sea level
• Range: 879 nmi (1,011 mi, 1,627 km)
• Combat radius: 370 nmi (426 mi, 685 km)
• Ferry range: 1,940 nmi (with auxiliary internal fuel tanks)
• Service ceiling: 26,000 ft (7,925 m)
• Rate of climb: 2,320 ft/min (11.8 m/s)
• Disc loading: 20.9 lb/ft² at 47,500 lb GW (102.23 kg/m²)
• Power/mass: 0.259 hp/lb (427 W/kg)
Armament
• 1× M240 machine gun on ramp, optional
Notable appearances in media
Main article: Aircraft in fiction#V-22 Osprey
See also
• Elizabeth A. Okoreeh-Baah, USMC - first female to pilot a V-22 Osprey
Related development
Comparable aircraft
Related lists
• List of military aircraft of the United States
References
Bibliography
• Markman, Steve and Bill Holder. "Bell/Boeing V-22 Osprey Tilt-Engine VTOL Transport (U.S.A.)". Straight Up: A History of Vertical Flight. Schiffer Publishing, 2000. ISBN 0-7643-1204-9.
• Norton, Bill. Bell Boeing V-22 Osprey, Tiltrotor Tactical Transport. Midland Publishing, 2004. ISBN 1-85780-165-2.
External links
Wikimedia Commons has media related to: V-22 Osprey
• V-22 Osprey web, and www.history.navy.mil/planes/v-22.html
• CV-22 fact sheet on USAF site
• www.globalsecurity.org/military/systems/aircraft/v-22.htm
• www.airforce-technology.com/projects/osprey/
• "Flight of the Osprey", US Navy video of V-22 operations
Pasted from Wikipedia: Bell-Boeing V-22 Osprey
• • • • •
The Bell-Boeing V-22 Osprey is a multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The V-22 originated from the U.S. Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. It was developed jointly by the Bell Helicopter, and Boeing Helicopters team, known as Bell Boeing, which produce the aircraft.[4] The V-22 first flew in 1989, and began years of flight testing and design alterations.
The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007. The Osprey's other operator, the U.S. Air Force fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed for combat operations in Iraq and Afghanistan.
Contents
•• 1.2 Flight testing and design changes
• 2 Design
• 8 Notable appearances in media
Development
Early development
The failure of the Iran hostage rescue mission in 1980 demonstrated to the United States military a need[5] for "a new type of aircraft, that could not only take off and land vertically but also could carry combat troops, and do so at speed."[6] The U.S. Department of Defense began the Joint-service Vertical take-off/landing Experimental (JVX) aircraft program in 1981, under U.S. Army leadership. Later the U.S. Navy/Marine Corps took the lead.[7][8] The JVX combined requirements from the Marine Corps, Air Force, Army and Navy.[9][10] A request for proposals (RFP) was issued in December 1982 for JVX preliminary design work. Interest in the program was expressed by Aérospatiale, Bell Helicopter, Boeing Vertol, Grumman, Lockheed, and Westland. The DoD pushed for contractors to form teams. Bell partnered with Boeing Vertol. The Bell Boeing team submitted a proposal for a enlarged version of the Bell XV-15 prototype on 17 February 1983. This was the only proposal received and a preliminary design contract was awarded on 26 April 1983.[11][12]
The JVX aircraft was designated V-22 Osprey on 15 January 1985; by March that same year the first six prototypes were being produced, and Boeing Vertol was expanded to deal with the project workload.[13][14] Work has been split evenly between Bell and Boeing. Bell Helicopter manufactures and integrates the wing, nacelles, rotors, drive system, tail surfaces, and aft ramp, as well as integrates the Rolls-Royce engines and performs final assembly. Boeing Helicopters manufactures and integrates the fuselage, cockpit, avionics, and flight controls.[4][15] The USMC variant of the Osprey received the MV-22 designation and the Air Force variant received CV-22; reversed from normal procedure to prevent Marine Ospreys from having a conflicting designation with aircraft carriers (CV).[16] Full-scale development of the V-22 tilt-rotor aircraft began in 1986.[2] On 3 May 1986 the Bell-Boeing partnership was awarded a $1.714 billion contract for V-22 aircraft by the Navy, thus at this point the project had acquisition plans with all four arms of the U.S. military.[17]
The first V-22 was rolled out with significant media attention in May 1988.[18][19] However the project suffered several political blows. Firstly in the same year, the Army left the program, citing a need to focus its budget on more immediate aviation programs.[20] The project also faced considerable dialogue in the Senate, surviving two votes that both could have resulted in cancellation.[21][22] Despite the Senate's decision, the Department of Defense instructed the Navy not to spend more money on the Osprey.[23] At the same time, the Bush administration sought the cancellation of the project.[23]
Flight testing and design changes
The first of six MV-22 prototypes first flew on 19 March 1989 in the helicopter mode,[24] and on 14 September 1989 as a fixed-wing plane.[25] The third and fourth prototypes successfully completed the Osprey's first Sea Trials on the USS Wasp in December 1990.[26] However, the fourth and fifth prototypes crashed in 1991-92.[27] Flight tests were resumed in August 1993 after changes were incorporated in the prototypes.[2] From October 1992 until April 1993, Bell and Boeing redesigned the V-22 to reduce empty weight, simplify manufacture and reduce production costs. This redesigned version became the B-model.[28]
Flight testing of four full-scale development V-22s began in early 1997 when the first pre-production V-22 was delivered to the Naval Air Warfare Test Center, Naval Air Station Patuxent River, Maryland. The first EMD flight took place on 5 February 1997. The first of four low rate initial production aircraft, ordered on 28 April 1997, was delivered on 27 May 1999. Osprey number 10 completed the program's second Sea Trials, this time from the USS Saipan in January 1999.[2] During external load testing in April 1999, Boeing used a V-22 to lift and transport the M777 howitzer.[29] In 2000, Boeing announced that the V-22 would be fitted with a nose-mounted GAU-19 Gatling gun,[30] but the GAU-19 gun was later canceled.[31]
In 2000, there were two further fatal crashes, killing a total of 19 Marines, and the production was again halted while the cause of these crashes was investigated and various parts were redesigned.[32] The V-22 completed its final operational evaluation in June 2005. The evaluation was deemed successful; events included long range deployments, high altitude, desert and shipboard operations. The problems identified in various accidents had been addressed.[33]
Controversy
The V-22's development process has been long and controversial, partly due to its large cost increases.[34] When the development budget, first planned for $2.5 billion in 1986, increased to a projected $30 billion in 1988, then-Defense Secretary Dick Cheney tried to zero out its funding. He was eventually overruled by Congress.[32] As of 2008, $27 billion have been spent on the Osprey program and another $27.2 billion will be required to complete planned production numbers by the end of the program.[2]
The V-22 squadron's former commander at Marine Corps Air Station New River, Lt. Colonel Odin Lieberman, was relieved of duty in 2001 after allegations that he instructed his unit that they needed to falsify maintenance records to make the plane appear more reliable.[2][35] Three officers were later implicated in the falsification scandal.[34]
The aircraft is incapable of autorotation, and is therefore unable to land safely in helicopter mode if both engines fail. A director of the Pentagon's testing office in 2005 said that if the Osprey loses power while flying like a helicopter below 1,600 feet (490 m), emergency landings "are not likely to be survivable". But Captain Justin (Moon) McKinney, a V-22 pilot, says that this will not be a problem, "We can turn it into a plane and glide it down, just like a C-130".[31] A complete loss of power would require the failure of both engines, as a drive shaft connects the nacelles through the wing; one engine can power both proprotors.[36] While vortex ring state (VRS) contributed to a deadly V-22 accident, the aircraft is less susceptible to the condition than conventional helicopters and recovers more quickly.[5] The Marines now train new pilots in the recognition of and recovery from VRS and have instituted operational envelope limits and instrumentation to help pilots avoid VRS conditions.[32][37]
It was planned in 2000 to equip all V-22s with a nose-mounted Gatling gun, to provide "the V-22 with a strong defensive firepower capability to greatly increase the aircraft's survivability in hostile actions."[30] The nose gun project was canceled however, leading to criticism by retired Marine Corps Commandant General James L. Jones, who is not satisfied with the current V-22 armament.[31] A belly-mounted turret was later installed on some of the first V-22s sent to the War in Afghanistan in 2009.[38]
With the first combat deployment of the MV-22 in October 2007, Time Magazine ran an article condemning the aircraft as unsafe, overpriced, and completely inadequate.[31] The Marine Corps, however, responded with the assertion that much of the article's data were dated, obsolete, inaccurate, and reflected expectations that ran too high for any new field of aircraft.[39]
Recent development
On 28 September 2005, the Pentagon formally approved full-rate production for the V-22.[40] The plan is to boost production from 11 a year to between 24 and 48 a year by 2012. Of the 458 total planned, 360 are for the Marine Corps, 48 for the Navy, and 50 for the Air Force at an average cost of $110 million per aircraft, including development costs.[2] The V-22 had an incremental flyaway cost of $70 million per aircraft in 2007,[3] but the Navy hopes to shave about $10 million off that cost after a five-year production contract starts in 2008.[41]
The Bell-Boeing Joint Project Office in Amarillo, Texas will design a new integrated avionics processor to resolve electronics obsolescence issues and add new network capabilities.[42]
Design
The Osprey is the world's first production tiltrotor aircraft, with one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. It is classified as a powered lift aircraft by the Federal Aviation Administration.[43] For takeoff and landing, it typically operates as a helicopter with the nacelles vertical (rotors horizontal). Once airborne, the nacelles rotate forward 90° in as little as 12 seconds for horizontal flight, converting the V-22 to a more fuel-efficient, higher-speed turboprop airplane. STOL rolling-takeoff and landing capability is achieved by having the nacelles tilted forward up to 45°. For compact storage and transport, the V-22's wing rotates to align, front-to-back, with the fuselage. The proprotors can also fold in a sequence taking 90 seconds.[44]
Most Osprey missions will use fixed wing flight 75 percent or more of the time, reducing wear and tear on the aircraft and reducing operational costs.[45] This fixed wing flight is higher than typical helicopter missions allowing longer range line-of-sight communications and so improved command and control.[2] Boeing has stated the V-22 design loses 10% of its vertical lift over a Tiltwing design when operating in helicopter mode because of airflow resistance due to the wings, but that the Tiltrotor design has better short takeoff and landing performance.[46]
The V-22 is equipped with a glass cockpit, which incorporates four Multi-function displays (MFDs) and one shared Central Display Unit (CDU), allowing the pilots to display a variety of images including: digimaps centered or decentered on current position, FLIR imagery, primary flight instruments, navigation (TACAN, VOR, ILS, GPS, INS), and system status. The flight director panel of the Cockpit Management System (CMS) allows for fully-coupled (aka: autopilot) functions which will take the aircraft from forward flight into a 50-foot hover with no pilot interaction other than programming the system.[47] The glass cockpit of the canceled CH-46X was derived from the V-22.[48]
The V-22 is a fly-by-wire aircraft with triple-redundant flight control systems.[49] With the nacelles pointing straight up in conversion mode at 90° the flight computers command the aircraft to fly like a helicopter, with cyclic forces being applied to a conventional swashplate at the rotor hub. With the nacelles in airplane mode (0°) the flaperons, rudder, and elevator fly the aircraft like an airplane. This is a gradual transition and occurs over the rotation range of the nacelles. The lower the nacelles, the greater effect of the airplane-mode control surfaces.[50] The nacelles can rotate past vertical to 97.5° for rearward flight.[51][52]
The Osprey can be armed with one M240 7.62x51mm NATO (.308 in caliber) or M2 .50 in caliber (12.7 mm) machine gun on the loading ramp, that can be fired rearward when the ramp is lowered. A GAU-19 three-barrel .50 in gatling gun mounted below the V-22's nose has also been studied for future upgrade.[31][53] BAE Systems developed a remotely operated turreted weapons system for the V-22,[54] which was installed on half of the first V-22s deployed to Afghanistan in 2009.[38] The 7.62 mm belly gun turret is remotely operated by a gunner inside the aircraft, who acquires targets with a separate pod using color television and forward looking infrared imagery.
U.S. Naval Air Systems Command is working on upgrades to increase the maximum speed from 250 knots (460 km/h; 290 mph) to 270 knots (500 km/h; 310 mph), increase helicopter mode altitude limit from 10,000 feet (3,000 m) to 12,000 feet (3,700 m) or 14,000 feet (4,300 m), and increase lift performance.[55]
Operational history
US Marine Corps
Marine Corps crew training on the Osprey has been conducted by VMMT-204 since March 2000. On 3 June 2005, the Marine Corps helicopter squadron Marine Medium Helicopter 263 (HMM-263), stood down to begin the process of transitioning to the MV-22 Osprey.[56] On 8 December 2005, Lieutenant General Amos, commander of the II MEF, accepted the delivery of the first fleet of MV-22s, delivered to HMM-263. The unit reactivated on 3 March 2006 as the first MV-22 squadron and was redesignated VMM-263. On 31 August 2006, VMM-162 (the former HMM-162) followed suit. On 23 March 2007, HMM-266 became Marine Medium Tiltrotor Squadron 266 (VMM-266) at Marine Corps Air Station New River, North Carolina.[57]
The Osprey has been replacing existing CH-46 Sea Knight squadrons.[58] The MV-22 reached initial operational capability (IOC) with the U.S. Marine Corps on 13 June 2007.[1] On 10 July 2007 an MV-22 Osprey landed aboard the Royal Navy aircraft carrier, HMS Illustrious in the Atlantic Ocean. This marked the first time a V-22 had landed on any non-U.S. vessel.[59]
On 13 April 2007, the U.S. Marine Corps announced that it would be sending ten V-22 aircraft to Iraq, the Osprey's first combat deployment. Marine Corps Commandant, General James Conway, indicated that over 150 Marines would accompany the Osprey set for September deployment to Al-Asad Airfield.[60][61] On 17 September 2007, ten MV-22Bs of VMM-263 left for Iraq aboard the USS Wasp. The decision to use a ship rather than use the Osprey's self-deployment capability was made because of concerns over icing during the North Atlantic portion of the trip, lack of available KC-130s for mid-air refueling, and the availability of the USS Wasp.[62]
The Osprey has provided support in Iraq, racking up some 2,000 flight hours over three months with a mission capable availability rate of 68.1% as of late-January 2008.[63] They are primarily used in Iraq's western Anbar province for routine cargo and troop movements, and also for riskier "aero-scout" missions. General David Petraeus, the top U.S. military commander in Iraq, used one to fly around Iraq on Christmas Day 2007 to visit troops.[64] Then-presidential candidate Barack Obama also flew in Ospreys during his high profile 2008 tour of Iraq.[65]
The only major problem has been obtaining the necessary spare parts to maintain the aircraft.[66] The V-22 had flown 3,000 sorties totaling 5,200 hours in Iraq as of July 2008.[67] USMC leadership expect to deploy MV-22s to Afghanistan in 2009.[66][68] General George J. Trautman, III praised the increased range of the V-22 over the legacy helicopters in Iraq and said that "it turned his battle space from the size of Texas into the size of Rhode Island."[69]
Naval Air Systems Command has devised a temporary fix for sailors to place portable heat shields under Osprey engines to prevent damage to the decks of some of the Navy's smaller amphibious ships, but they determined that a long term solution to the problem would require these decks be redesigned with heat resistant deck coatings, passive thermal barriers and changes in ship structure in order to operate V-22s and F-35Bs.[70]
A Government Accountability Office study reported that by January 2009 the Marines had 12 MV-22s operating in Iraq and they managed to successfully complete all assigned missions. The same report found that the V-22 deployments had mission capable rates averaging 57% to 68% and an overall full mission capable rate of only 6%. It also stated that the aircraft had shown weakness in situational awareness, maintenance, shipboard operations and the ability to transport troops and external cargo.[71] That study also concluded that the "deployments confirmed that the V-22’s enhanced speed and range enable personnel and internal cargo to be transported faster and farther than is possible with the legacy helicopters it is replacing".[71]
The MV-22 saw its first offensive combat mission, Operation Cobra's Anger on 4 December 2009. Ospreys assisted in inserting 1,000 Marines and 150 Afghan troops into the Now Zad Valley of Helmand Province in southern Afghanistan to disrupt communication and supply lines of the Taliban.[38] In January 2010 the MV-22 Osprey is being sent to Haiti as part of Operation Unified Response relief efforts after the earthquake there. This will be the first use the Marine V-22 in a humanitarian mission.[72]
US Air Force
The Air Force's first operational CV-22 Osprey was delivered to the 58th Special Operations Wing (58th SOW) at Kirtland Air Force Base, New Mexico on 20 March 2006. This and subsequent aircraft will become part of the 58th SOW's fleet of aircraft used for training pilots and crew members for special operations use.[73] On 16 November 2006, the Air Force officially accepted the CV-22 in a ceremony conducted at Hurlburt Field, Florida.[74]
The US Air Force's first operational deployment of the Osprey sent four CV-22s to Mali in November 2008 in support of Exercise Flintlock. The CV-22s flew nonstop from Hurlburt Field, Florida with in-flight refueling.[5] AFSOC declared that the 8th Special Operations Squadron reached Initial Operational Capability on 16 March 2009, with six of its planned nine CV-22s operational.[75]
In June 2009, CV-22s of the 8th Special Operations Squadron delivered 43,000 pounds (20,000 kg) of humanitarian supplies to remote villages in Honduras that were not accessible by conventional vehicles.[76] In November 2009, the 8th SO Squadron and its six CV-22s returned from a three-month deployment in Iraq.[77]
The first possible combat loss of an Osprey occurred on 9 April, 2010, as a CV-22 went down near Qalat, Zabul Province, Afghanistan, killing four.[78][79]
Potential operators
In 1999 the V-22 was studied for use in the United Kingdom's Royal Navy,[80] it has been raised several times as a candidate for the role of Maritime Airborne Surveillance and Control (MASC).[81]
Israel had shown interest in the purchase of MV-22s, but no order was placed.[82][83] Flightglobal reported in late 2009 that Israel has decided to wait for the CH-53K instead.[84]
The V-22 Osprey is a candidate for the Norwegian All Weather Search and Rescue Helicopter (NAWSARH) that is planned to replace the Westland Sea King Mk.43B of the Royal Norwegian Air Force in 2015.[85] The other candidates for the NAWSARH contract of 10-12 helicopters are AgustaWestland AW101 Merlin, Eurocopter EC225, NHIndustries NH90 and Sikorsky S-92.[86]
Bell Boeing has made an unsolicited offer of the V-22 for US Army medical evacuation needs.[87] However the Joint Personnel Recovery Agency issued a report that said that a common helicopter design would be needed for both combat recovery and medical evacuation and that the V-22 would not be suitable for recovery missions because of the difficulty of hoist operations and lack of self-defense capabilities.[88]
The US Navy remains a potential user of the V-22, but its role and mission with the Navy remains unclear. The latest proposal is to replace the C-2 Greyhound with the V-22 in the fleet logistics role. The V-22 would have the advantage of being able to land on and support non-carriers with rapid delivery of supplies and people between the ships of a taskforce or to ships on patrol beyond helicopter range.[89] Loren B. Thompson of the Lexington Institute has suggested V-22s for use in combat search and rescue and Marine One VIP transport, which also need replacement aircraft.[90]
Variants
• V-22A
•• Pre-production full-scale development aircraft used for flight testing. These are unofficially considered A-variants after 1993 redesign.[91]
• HV-22
•• The U.S. Navy considered an HV-22 to provide combat search and rescue, delivery and retrieval of special warfare teams along with fleet logistic support transport. However, it chose the MH-60S for this role in 1992.[92]
• SV-22
•• The proposed anti-submarine warfare Navy variant. The Navy studied the SV-22 in the 1980s to replace S-3 and SH-2 aircraft.[93]
• MV-22B
•• Basic U.S. Marine Corps transport; original requirement for 552 (now 360). The Marine Corps is the lead service in the development of the V-22 Osprey. The Marine Corps variant, the MV-22B, is an assault transport for troops, equipment and supplies, capable of operating from ships or from expeditionary airfields ashore. It is replacing the Marine Corps' CH-46E[57] and CH-53D.[94]
• CV-22B
•• Air Force variant for the U.S. Special Operations Command (USSOCOM). It will conduct long-range, special operations missions, and is equipped with extra fuel tanks and terrain-following radar.[95][96]
Operators
•• 8th Special Operations Squadron (8 SOS) at Hurlburt Field, Florida
•• 71st Special Operations Squadron (71 SOS) at Kirtland Air Force Base, New Mexico
•• 20th Special Operations Squadron (20 SOS) at Cannon Air Force Base, New Mexico
•• VMM-161
•• VMM-162
•• VMM-261
•• VMM-263
•• VMM-264
•• VMM-266
•• VMM-365
•• VMMT-204 - Training squadron
•• VMX-22 - Marine Tiltrotor Operational Test and Evaluation Squadron
Notable accidents
Main article: Accidents and incidents involving the V-22 Osprey
From 1991 to 2000 there were four significant crashes, and a total of 30 fatalities, during testing.[32] Since becoming operational in 2007, the V-22 has had one possible combat loss due to an unknown cause, no losses due to accidents, and seven other notable, but minor, incidents.
• On 11 June 1991, a mis-wired flight control system led to two minor injuries when the left nacelle struck the ground while the aircraft was hovering 15 feet (4.6 m) in the air, causing it to bounce and catch fire.[97]
• On 20 July 1992, a leaking gearbox led to a fire in the right nacelle, causing the aircraft to drop into the Potomac River in front of an audience of Congressmen and other government officials at Quantico, killing all seven on board and grounding the aircraft for 11 months.[98]
• On 8 April 2000, a V-22 loaded with Marines to simulate a rescue, attempted to land at Marana Northwest Regional Airport in Arizona, stalled when its right rotor entered vortex ring state, rolled over, crashed, and exploded, killing all 19 on board.[37]
• On 11 December 2000, after a catastrophic hydraulic leak and subsequent software instrument failure, a V-22 fell 1,600 feet (490 m) into a forest in Jacksonville, North Carolina, killing all four aboard. This caused the Marine Corps to ground their fleet of eight V-22s, the second grounding that year.[99][100]
Specifications (MV-22B)
Data from Boeing Integrated Defense Systems,[101] Naval Air Systems Command,[102] US Air Force CV-22 fact sheet,[95] Norton,[103] and Bell[104]
General characteristics
• Crew: Four (pilot, copilot and two flight engineers)
• Capacity: 24 troops (seated), 32 troops (floor loaded) or up to 15,000 lb (6,800 kg) of cargo (dual hook)
• Length: 57 ft 4 in (17.5 m)
• Rotor diameter: 38 ft 0 in (11.6 m)
• Wingspan: 45 ft 10 in (14 m)
• Width with rotors: 84 ft 7 in (25.8 m)
• Height: 22 ft 1 in/6.73 m; overall with nacelles vertical (17 ft 11 in/5.5 m; at top of tailfins)
• Disc area: 2,268 ft² (212 m²)
• Wing area: 301.4 ft² (28 m²)
• Empty weight: 33,140 lb (15,032 kg)
• Loaded weight: 47,500 lb (21,500 kg)
• Max takeoff weight: 60,500 lb (27,400 kg)
• Powerplant: 2× Rolls-Royce Allison T406/AE 1107C-Liberty turboshafts, 6,150 hp (4,590 kW) each
Performance
• Maximum speed: 250 knots (460 km/h, 290 mph) at sea level / 305 kn (565 km/h; 351 mph) at 15,000 ft (4,600 m)[105]
• Cruise speed: 241 knots (277 mph, 446 km/h) at sea level
• Range: 879 nmi (1,011 mi, 1,627 km)
• Combat radius: 370 nmi (426 mi, 685 km)
• Ferry range: 1,940 nmi (with auxiliary internal fuel tanks)
• Service ceiling: 26,000 ft (7,925 m)
• Rate of climb: 2,320 ft/min (11.8 m/s)
• Disc loading: 20.9 lb/ft² at 47,500 lb GW (102.23 kg/m²)
• Power/mass: 0.259 hp/lb (427 W/kg)
Armament
• 1× M240 machine gun on ramp, optional
Notable appearances in media
Main article: Aircraft in fiction#V-22 Osprey
See also
• Elizabeth A. Okoreeh-Baah, USMC - first female to pilot a V-22 Osprey
Related development
Comparable aircraft
Related lists
• List of military aircraft of the United States
References
Bibliography
• Markman, Steve and Bill Holder. "Bell/Boeing V-22 Osprey Tilt-Engine VTOL Transport (U.S.A.)". Straight Up: A History of Vertical Flight. Schiffer Publishing, 2000. ISBN 0-7643-1204-9.
• Norton, Bill. Bell Boeing V-22 Osprey, Tiltrotor Tactical Transport. Midland Publishing, 2004. ISBN 1-85780-165-2.
External links
Wikimedia Commons has media related to: V-22 Osprey
• V-22 Osprey web, and www.history.navy.mil/planes/v-22.html
• CV-22 fact sheet on USAF site
• www.globalsecurity.org/military/systems/aircraft/v-22.htm
• www.airforce-technology.com/projects/osprey/
• "Flight of the Osprey", US Navy video of V-22 operations
Pasted from Wikipedia: Bell-Boeing V-22 Osprey
• • • • •
The Bell-Boeing V-22 Osprey is a multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The V-22 originated from the U.S. Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. It was developed jointly by the Bell Helicopter, and Boeing Helicopters team, known as Bell Boeing, which produce the aircraft.[4] The V-22 first flew in 1989, and began years of flight testing and design alterations.
The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007. The Osprey's other operator, the U.S. Air Force fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed for combat operations in Iraq and Afghanistan.
Contents
•• 1.2 Flight testing and design changes
• 2 Design
• 8 Notable appearances in media
Development
Early development
The failure of the Iran hostage rescue mission in 1980 demonstrated to the United States military a need[5] for "a new type of aircraft, that could not only take off and land vertically but also could carry combat troops, and do so at speed."[6] The U.S. Department of Defense began the Joint-service Vertical take-off/landing Experimental (JVX) aircraft program in 1981, under U.S. Army leadership. Later the U.S. Navy/Marine Corps took the lead.[7][8] The JVX combined requirements from the Marine Corps, Air Force, Army and Navy.[9][10] A request for proposals (RFP) was issued in December 1982 for JVX preliminary design work. Interest in the program was expressed by Aérospatiale, Bell Helicopter, Boeing Vertol, Grumman, Lockheed, and Westland. The DoD pushed for contractors to form teams. Bell partnered with Boeing Vertol. The Bell Boeing team submitted a proposal for a enlarged version of the Bell XV-15 prototype on 17 February 1983. This was the only proposal received and a preliminary design contract was awarded on 26 April 1983.[11][12]
The JVX aircraft was designated V-22 Osprey on 15 January 1985; by March that same year the first six prototypes were being produced, and Boeing Vertol was expanded to deal with the project workload.[13][14] Work has been split evenly between Bell and Boeing. Bell Helicopter manufactures and integrates the wing, nacelles, rotors, drive system, tail surfaces, and aft ramp, as well as integrates the Rolls-Royce engines and performs final assembly. Boeing Helicopters manufactures and integrates the fuselage, cockpit, avionics, and flight controls.[4][15] The USMC variant of the Osprey received the MV-22 designation and the Air Force variant received CV-22; reversed from normal procedure to prevent Marine Ospreys from having a conflicting designation with aircraft carriers (CV).[16] Full-scale development of the V-22 tilt-rotor aircraft began in 1986.[2] On 3 May 1986 the Bell-Boeing partnership was awarded a $1.714 billion contract for V-22 aircraft by the Navy, thus at this point the project had acquisition plans with all four arms of the U.S. military.[17]
The first V-22 was rolled out with significant media attention in May 1988.[18][19] However the project suffered several political blows. Firstly in the same year, the Army left the program, citing a need to focus its budget on more immediate aviation programs.[20] The project also faced considerable dialogue in the Senate, surviving two votes that both could have resulted in cancellation.[21][22] Despite the Senate's decision, the Department of Defense instructed the Navy not to spend more money on the Osprey.[23] At the same time, the Bush administration sought the cancellation of the project.[23]
Flight testing and design changes
The first of six MV-22 prototypes first flew on 19 March 1989 in the helicopter mode,[24] and on 14 September 1989 as a fixed-wing plane.[25] The third and fourth prototypes successfully completed the Osprey's first Sea Trials on the USS Wasp in December 1990.[26] However, the fourth and fifth prototypes crashed in 1991-92.[27] Flight tests were resumed in August 1993 after changes were incorporated in the prototypes.[2] From October 1992 until April 1993, Bell and Boeing redesigned the V-22 to reduce empty weight, simplify manufacture and reduce production costs. This redesigned version became the B-model.[28]
Flight testing of four full-scale development V-22s began in early 1997 when the first pre-production V-22 was delivered to the Naval Air Warfare Test Center, Naval Air Station Patuxent River, Maryland. The first EMD flight took place on 5 February 1997. The first of four low rate initial production aircraft, ordered on 28 April 1997, was delivered on 27 May 1999. Osprey number 10 completed the program's second Sea Trials, this time from the USS Saipan in January 1999.[2] During external load testing in April 1999, Boeing used a V-22 to lift and transport the M777 howitzer.[29] In 2000, Boeing announced that the V-22 would be fitted with a nose-mounted GAU-19 Gatling gun,[30] but the GAU-19 gun was later canceled.[31]
In 2000, there were two further fatal crashes, killing a total of 19 Marines, and the production was again halted while the cause of these crashes was investigated and various parts were redesigned.[32] The V-22 completed its final operational evaluation in June 2005. The evaluation was deemed successful; events included long range deployments, high altitude, desert and shipboard operations. The problems identified in various accidents had been addressed.[33]
Controversy
The V-22's development process has been long and controversial, partly due to its large cost increases.[34] When the development budget, first planned for $2.5 billion in 1986, increased to a projected $30 billion in 1988, then-Defense Secretary Dick Cheney tried to zero out its funding. He was eventually overruled by Congress.[32] As of 2008, $27 billion have been spent on the Osprey program and another $27.2 billion will be required to complete planned production numbers by the end of the program.[2]
The V-22 squadron's former commander at Marine Corps Air Station New River, Lt. Colonel Odin Lieberman, was relieved of duty in 2001 after allegations that he instructed his unit that they needed to falsify maintenance records to make the plane appear more reliable.[2][35] Three officers were later implicated in the falsification scandal.[34]
The aircraft is incapable of autorotation, and is therefore unable to land safely in helicopter mode if both engines fail. A director of the Pentagon's testing office in 2005 said that if the Osprey loses power while flying like a helicopter below 1,600 feet (490 m), emergency landings "are not likely to be survivable". But Captain Justin (Moon) McKinney, a V-22 pilot, says that this will not be a problem, "We can turn it into a plane and glide it down, just like a C-130".[31] A complete loss of power would require the failure of both engines, as a drive shaft connects the nacelles through the wing; one engine can power both proprotors.[36] While vortex ring state (VRS) contributed to a deadly V-22 accident, the aircraft is less susceptible to the condition than conventional helicopters and recovers more quickly.[5] The Marines now train new pilots in the recognition of and recovery from VRS and have instituted operational envelope limits and instrumentation to help pilots avoid VRS conditions.[32][37]
It was planned in 2000 to equip all V-22s with a nose-mounted Gatling gun, to provide "the V-22 with a strong defensive firepower capability to greatly increase the aircraft's survivability in hostile actions."[30] The nose gun project was canceled however, leading to criticism by retired Marine Corps Commandant General James L. Jones, who is not satisfied with the current V-22 armament.[31] A belly-mounted turret was later installed on some of the first V-22s sent to the War in Afghanistan in 2009.[38]
With the first combat deployment of the MV-22 in October 2007, Time Magazine ran an article condemning the aircraft as unsafe, overpriced, and completely inadequate.[31] The Marine Corps, however, responded with the assertion that much of the article's data were dated, obsolete, inaccurate, and reflected expectations that ran too high for any new field of aircraft.[39]
Recent development
On 28 September 2005, the Pentagon formally approved full-rate production for the V-22.[40] The plan is to boost production from 11 a year to between 24 and 48 a year by 2012. Of the 458 total planned, 360 are for the Marine Corps, 48 for the Navy, and 50 for the Air Force at an average cost of $110 million per aircraft, including development costs.[2] The V-22 had an incremental flyaway cost of $70 million per aircraft in 2007,[3] but the Navy hopes to shave about $10 million off that cost after a five-year production contract starts in 2008.[41]
The Bell-Boeing Joint Project Office in Amarillo, Texas will design a new integrated avionics processor to resolve electronics obsolescence issues and add new network capabilities.[42]
Design
The Osprey is the world's first production tiltrotor aircraft, with one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. It is classified as a powered lift aircraft by the Federal Aviation Administration.[43] For takeoff and landing, it typically operates as a helicopter with the nacelles vertical (rotors horizontal). Once airborne, the nacelles rotate forward 90° in as little as 12 seconds for horizontal flight, converting the V-22 to a more fuel-efficient, higher-speed turboprop airplane. STOL rolling-takeoff and landing capability is achieved by having the nacelles tilted forward up to 45°. For compact storage and transport, the V-22's wing rotates to align, front-to-back, with the fuselage. The proprotors can also fold in a sequence taking 90 seconds.[44]
Most Osprey missions will use fixed wing flight 75 percent or more of the time, reducing wear and tear on the aircraft and reducing operational costs.[45] This fixed wing flight is higher than typical helicopter missions allowing longer range line-of-sight communications and so improved command and control.[2] Boeing has stated the V-22 design loses 10% of its vertical lift over a Tiltwing design when operating in helicopter mode because of airflow resistance due to the wings, but that the Tiltrotor design has better short takeoff and landing performance.[46]
The V-22 is equipped with a glass cockpit, which incorporates four Multi-function displays (MFDs) and one shared Central Display Unit (CDU), allowing the pilots to display a variety of images including: digimaps centered or decentered on current position, FLIR imagery, primary flight instruments, navigation (TACAN, VOR, ILS, GPS, INS), and system status. The flight director panel of the Cockpit Management System (CMS) allows for fully-coupled (aka: autopilot) functions which will take the aircraft from forward flight into a 50-foot hover with no pilot interaction other than programming the system.[47] The glass cockpit of the canceled CH-46X was derived from the V-22.[48]
The V-22 is a fly-by-wire aircraft with triple-redundant flight control systems.[49] With the nacelles pointing straight up in conversion mode at 90° the flight computers command the aircraft to fly like a helicopter, with cyclic forces being applied to a conventional swashplate at the rotor hub. With the nacelles in airplane mode (0°) the flaperons, rudder, and elevator fly the aircraft like an airplane. This is a gradual transition and occurs over the rotation range of the nacelles. The lower the nacelles, the greater effect of the airplane-mode control surfaces.[50] The nacelles can rotate past vertical to 97.5° for rearward flight.[51][52]
The Osprey can be armed with one M240 7.62x51mm NATO (.308 in caliber) or M2 .50 in caliber (12.7 mm) machine gun on the loading ramp, that can be fired rearward when the ramp is lowered. A GAU-19 three-barrel .50 in gatling gun mounted below the V-22's nose has also been studied for future upgrade.[31][53] BAE Systems developed a remotely operated turreted weapons system for the V-22,[54] which was installed on half of the first V-22s deployed to Afghanistan in 2009.[38] The 7.62 mm belly gun turret is remotely operated by a gunner inside the aircraft, who acquires targets with a separate pod using color television and forward looking infrared imagery.
U.S. Naval Air Systems Command is working on upgrades to increase the maximum speed from 250 knots (460 km/h; 290 mph) to 270 knots (500 km/h; 310 mph), increase helicopter mode altitude limit from 10,000 feet (3,000 m) to 12,000 feet (3,700 m) or 14,000 feet (4,300 m), and increase lift performance.[55]
Operational history
US Marine Corps
Marine Corps crew training on the Osprey has been conducted by VMMT-204 since March 2000. On 3 June 2005, the Marine Corps helicopter squadron Marine Medium Helicopter 263 (HMM-263), stood down to begin the process of transitioning to the MV-22 Osprey.[56] On 8 December 2005, Lieutenant General Amos, commander of the II MEF, accepted the delivery of the first fleet of MV-22s, delivered to HMM-263. The unit reactivated on 3 March 2006 as the first MV-22 squadron and was redesignated VMM-263. On 31 August 2006, VMM-162 (the former HMM-162) followed suit. On 23 March 2007, HMM-266 became Marine Medium Tiltrotor Squadron 266 (VMM-266) at Marine Corps Air Station New River, North Carolina.[57]
The Osprey has been replacing existing CH-46 Sea Knight squadrons.[58] The MV-22 reached initial operational capability (IOC) with the U.S. Marine Corps on 13 June 2007.[1] On 10 July 2007 an MV-22 Osprey landed aboard the Royal Navy aircraft carrier, HMS Illustrious in the Atlantic Ocean. This marked the first time a V-22 had landed on any non-U.S. vessel.[59]
On 13 April 2007, the U.S. Marine Corps announced that it would be sending ten V-22 aircraft to Iraq, the Osprey's first combat deployment. Marine Corps Commandant, General James Conway, indicated that over 150 Marines would accompany the Osprey set for September deployment to Al-Asad Airfield.[60][61] On 17 September 2007, ten MV-22Bs of VMM-263 left for Iraq aboard the USS Wasp. The decision to use a ship rather than use the Osprey's self-deployment capability was made because of concerns over icing during the North Atlantic portion of the trip, lack of available KC-130s for mid-air refueling, and the availability of the USS Wasp.[62]
The Osprey has provided support in Iraq, racking up some 2,000 flight hours over three months with a mission capable availability rate of 68.1% as of late-January 2008.[63] They are primarily used in Iraq's western Anbar province for routine cargo and troop movements, and also for riskier "aero-scout" missions. General David Petraeus, the top U.S. military commander in Iraq, used one to fly around Iraq on Christmas Day 2007 to visit troops.[64] Then-presidential candidate Barack Obama also flew in Ospreys during his high profile 2008 tour of Iraq.[65]
The only major problem has been obtaining the necessary spare parts to maintain the aircraft.[66] The V-22 had flown 3,000 sorties totaling 5,200 hours in Iraq as of July 2008.[67] USMC leadership expect to deploy MV-22s to Afghanistan in 2009.[66][68] General George J. Trautman, III praised the increased range of the V-22 over the legacy helicopters in Iraq and said that "it turned his battle space from the size of Texas into the size of Rhode Island."[69]
Naval Air Systems Command has devised a temporary fix for sailors to place portable heat shields under Osprey engines to prevent damage to the decks of some of the Navy's smaller amphibious ships, but they determined that a long term solution to the problem would require these decks be redesigned with heat resistant deck coatings, passive thermal barriers and changes in ship structure in order to operate V-22s and F-35Bs.[70]
A Government Accountability Office study reported that by January 2009 the Marines had 12 MV-22s operating in Iraq and they managed to successfully complete all assigned missions. The same report found that the V-22 deployments had mission capable rates averaging 57% to 68% and an overall full mission capable rate of only 6%. It also stated that the aircraft had shown weakness in situational awareness, maintenance, shipboard operations and the ability to transport troops and external cargo.[71] That study also concluded that the "deployments confirmed that the V-22’s enhanced speed and range enable personnel and internal cargo to be transported faster and farther than is possible with the legacy helicopters it is replacing".[71]
The MV-22 saw its first offensive combat mission, Operation Cobra's Anger on 4 December 2009. Ospreys assisted in inserting 1,000 Marines and 150 Afghan troops into the Now Zad Valley of Helmand Province in southern Afghanistan to disrupt communication and supply lines of the Taliban.[38] In January 2010 the MV-22 Osprey is being sent to Haiti as part of Operation Unified Response relief efforts after the earthquake there. This will be the first use the Marine V-22 in a humanitarian mission.[72]
US Air Force
The Air Force's first operational CV-22 Osprey was delivered to the 58th Special Operations Wing (58th SOW) at Kirtland Air Force Base, New Mexico on 20 March 2006. This and subsequent aircraft will become part of the 58th SOW's fleet of aircraft used for training pilots and crew members for special operations use.[73] On 16 November 2006, the Air Force officially accepted the CV-22 in a ceremony conducted at Hurlburt Field, Florida.[74]
The US Air Force's first operational deployment of the Osprey sent four CV-22s to Mali in November 2008 in support of Exercise Flintlock. The CV-22s flew nonstop from Hurlburt Field, Florida with in-flight refueling.[5] AFSOC declared that the 8th Special Operations Squadron reached Initial Operational Capability on 16 March 2009, with six of its planned nine CV-22s operational.[75]
In June 2009, CV-22s of the 8th Special Operations Squadron delivered 43,000 pounds (20,000 kg) of humanitarian supplies to remote villages in Honduras that were not accessible by conventional vehicles.[76] In November 2009, the 8th SO Squadron and its six CV-22s returned from a three-month deployment in Iraq.[77]
The first possible combat loss of an Osprey occurred on 9 April, 2010, as a CV-22 went down near Qalat, Zabul Province, Afghanistan, killing four.[78][79]
Potential operators
In 1999 the V-22 was studied for use in the United Kingdom's Royal Navy,[80] it has been raised several times as a candidate for the role of Maritime Airborne Surveillance and Control (MASC).[81]
Israel had shown interest in the purchase of MV-22s, but no order was placed.[82][83] Flightglobal reported in late 2009 that Israel has decided to wait for the CH-53K instead.[84]
The V-22 Osprey is a candidate for the Norwegian All Weather Search and Rescue Helicopter (NAWSARH) that is planned to replace the Westland Sea King Mk.43B of the Royal Norwegian Air Force in 2015.[85] The other candidates for the NAWSARH contract of 10-12 helicopters are AgustaWestland AW101 Merlin, Eurocopter EC225, NHIndustries NH90 and Sikorsky S-92.[86]
Bell Boeing has made an unsolicited offer of the V-22 for US Army medical evacuation needs.[87] However the Joint Personnel Recovery Agency issued a report that said that a common helicopter design would be needed for both combat recovery and medical evacuation and that the V-22 would not be suitable for recovery missions because of the difficulty of hoist operations and lack of self-defense capabilities.[88]
The US Navy remains a potential user of the V-22, but its role and mission with the Navy remains unclear. The latest proposal is to replace the C-2 Greyhound with the V-22 in the fleet logistics role. The V-22 would have the advantage of being able to land on and support non-carriers with rapid delivery of supplies and people between the ships of a taskforce or to ships on patrol beyond helicopter range.[89] Loren B. Thompson of the Lexington Institute has suggested V-22s for use in combat search and rescue and Marine One VIP transport, which also need replacement aircraft.[90]
Variants
• V-22A
•• Pre-production full-scale development aircraft used for flight testing. These are unofficially considered A-variants after 1993 redesign.[91]
• HV-22
•• The U.S. Navy considered an HV-22 to provide combat search and rescue, delivery and retrieval of special warfare teams along with fleet logistic support transport. However, it chose the MH-60S for this role in 1992.[92]
• SV-22
•• The proposed anti-submarine warfare Navy variant. The Navy studied the SV-22 in the 1980s to replace S-3 and SH-2 aircraft.[93]
• MV-22B
•• Basic U.S. Marine Corps transport; original requirement for 552 (now 360). The Marine Corps is the lead service in the development of the V-22 Osprey. The Marine Corps variant, the MV-22B, is an assault transport for troops, equipment and supplies, capable of operating from ships or from expeditionary airfields ashore. It is replacing the Marine Corps' CH-46E[57] and CH-53D.[94]
• CV-22B
•• Air Force variant for the U.S. Special Operations Command (USSOCOM). It will conduct long-range, special operations missions, and is equipped with extra fuel tanks and terrain-following radar.[95][96]
Operators
•• 8th Special Operations Squadron (8 SOS) at Hurlburt Field, Florida
•• 71st Special Operations Squadron (71 SOS) at Kirtland Air Force Base, New Mexico
•• 20th Special Operations Squadron (20 SOS) at Cannon Air Force Base, New Mexico
•• VMM-161
•• VMM-162
•• VMM-261
•• VMM-263
•• VMM-264
•• VMM-266
•• VMM-365
•• VMMT-204 - Training squadron
•• VMX-22 - Marine Tiltrotor Operational Test and Evaluation Squadron
Notable accidents
Main article: Accidents and incidents involving the V-22 Osprey
From 1991 to 2000 there were four significant crashes, and a total of 30 fatalities, during testing.[32] Since becoming operational in 2007, the V-22 has had one possible combat loss due to an unknown cause, no losses due to accidents, and seven other notable, but minor, incidents.
• On 11 June 1991, a mis-wired flight control system led to two minor injuries when the left nacelle struck the ground while the aircraft was hovering 15 feet (4.6 m) in the air, causing it to bounce and catch fire.[97]
• On 20 July 1992, a leaking gearbox led to a fire in the right nacelle, causing the aircraft to drop into the Potomac River in front of an audience of Congressmen and other government officials at Quantico, killing all seven on board and grounding the aircraft for 11 months.[98]
• On 8 April 2000, a V-22 loaded with Marines to simulate a rescue, attempted to land at Marana Northwest Regional Airport in Arizona, stalled when its right rotor entered vortex ring state, rolled over, crashed, and exploded, killing all 19 on board.[37]
• On 11 December 2000, after a catastrophic hydraulic leak and subsequent software instrument failure, a V-22 fell 1,600 feet (490 m) into a forest in Jacksonville, North Carolina, killing all four aboard. This caused the Marine Corps to ground their fleet of eight V-22s, the second grounding that year.[99][100]
Specifications (MV-22B)
Data from Boeing Integrated Defense Systems,[101] Naval Air Systems Command,[102] US Air Force CV-22 fact sheet,[95] Norton,[103] and Bell[104]
General characteristics
• Crew: Four (pilot, copilot and two flight engineers)
• Capacity: 24 troops (seated), 32 troops (floor loaded) or up to 15,000 lb (6,800 kg) of cargo (dual hook)
• Length: 57 ft 4 in (17.5 m)
• Rotor diameter: 38 ft 0 in (11.6 m)
• Wingspan: 45 ft 10 in (14 m)
• Width with rotors: 84 ft 7 in (25.8 m)
• Height: 22 ft 1 in/6.73 m; overall with nacelles vertical (17 ft 11 in/5.5 m; at top of tailfins)
• Disc area: 2,268 ft² (212 m²)
• Wing area: 301.4 ft² (28 m²)
• Empty weight: 33,140 lb (15,032 kg)
• Loaded weight: 47,500 lb (21,500 kg)
• Max takeoff weight: 60,500 lb (27,400 kg)
• Powerplant: 2× Rolls-Royce Allison T406/AE 1107C-Liberty turboshafts, 6,150 hp (4,590 kW) each
Performance
• Maximum speed: 250 knots (460 km/h, 290 mph) at sea level / 305 kn (565 km/h; 351 mph) at 15,000 ft (4,600 m)[105]
• Cruise speed: 241 knots (277 mph, 446 km/h) at sea level
• Range: 879 nmi (1,011 mi, 1,627 km)
• Combat radius: 370 nmi (426 mi, 685 km)
• Ferry range: 1,940 nmi (with auxiliary internal fuel tanks)
• Service ceiling: 26,000 ft (7,925 m)
• Rate of climb: 2,320 ft/min (11.8 m/s)
• Disc loading: 20.9 lb/ft² at 47,500 lb GW (102.23 kg/m²)
• Power/mass: 0.259 hp/lb (427 W/kg)
Armament
• 1× M240 machine gun on ramp, optional
Notable appearances in media
Main article: Aircraft in fiction#V-22 Osprey
See also
• Elizabeth A. Okoreeh-Baah, USMC - first female to pilot a V-22 Osprey
Related development
Comparable aircraft
Related lists
• List of military aircraft of the United States
References
Bibliography
• Markman, Steve and Bill Holder. "Bell/Boeing V-22 Osprey Tilt-Engine VTOL Transport (U.S.A.)". Straight Up: A History of Vertical Flight. Schiffer Publishing, 2000. ISBN 0-7643-1204-9.
• Norton, Bill. Bell Boeing V-22 Osprey, Tiltrotor Tactical Transport. Midland Publishing, 2004. ISBN 1-85780-165-2.
External links
Wikimedia Commons has media related to: V-22 Osprey
• V-22 Osprey web, and www.history.navy.mil/planes/v-22.html
• CV-22 fact sheet on USAF site
• www.globalsecurity.org/military/systems/aircraft/v-22.htm
• www.airforce-technology.com/projects/osprey/
• "Flight of the Osprey", US Navy video of V-22 operations
Pasted from Wikipedia: Bell-Boeing V-22 Osprey
• • • • •
The Bell-Boeing V-22 Osprey is a multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft.
The V-22 originated from the U.S. Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. It was developed jointly by the Bell Helicopter, and Boeing Helicopters team, known as Bell Boeing, which produce the aircraft.[4] The V-22 first flew in 1989, and began years of flight testing and design alterations.
The United States Marine Corps began crew training for the Osprey in 2000, and fielded it in 2007. The Osprey's other operator, the U.S. Air Force fielded their version of the tiltrotor in 2009. Since entering service with the U.S. Marine Corps and Air Force, the Osprey has been deployed for combat operations in Iraq and Afghanistan.
Contents
•• 1.2 Flight testing and design changes
• 2 Design
• 8 Notable appearances in media
Development
Early development
The failure of the Iran hostage rescue mission in 1980 demonstrated to the United States military a need[5] for "a new type of aircraft, that could not only take off and land vertically but also could carry combat troops, and do so at speed."[6] The U.S. Department of Defense began the Joint-service Vertical take-off/landing Experimental (JVX) aircraft program in 1981, under U.S. Army leadership. Later the U.S. Navy/Marine Corps took the lead.[7][8] The JVX combined requirements from the Marine Corps, Air Force, Army and Navy.[9][10] A request for proposals (RFP) was issued in December 1982 for JVX preliminary design work. Interest in the program was expressed by Aérospatiale, Bell Helicopter, Boeing Vertol, Grumman, Lockheed, and Westland. The DoD pushed for contractors to form teams. Bell partnered with Boeing Vertol. The Bell Boeing team submitted a proposal for a enlarged version of the Bell XV-15 prototype on 17 February 1983. This was the only proposal received and a preliminary design contract was awarded on 26 April 1983.[11][12]
The JVX aircraft was designated V-22 Osprey on 15 January 1985; by March that same year the first six prototypes were being produced, and Boeing Vertol was expanded to deal with the project workload.[13][14] Work has been split evenly between Bell and Boeing. Bell Helicopter manufactures and integrates the wing, nacelles, rotors, drive system, tail surfaces, and aft ramp, as well as integrates the Rolls-Royce engines and performs final assembly. Boeing Helicopters manufactures and integrates the fuselage, cockpit, avionics, and flight controls.[4][15] The USMC variant of the Osprey received the MV-22 designation and the Air Force variant received CV-22; reversed from normal procedure to prevent Marine Ospreys from having a conflicting designation with aircraft carriers (CV).[16] Full-scale development of the V-22 tilt-rotor aircraft began in 1986.[2] On 3 May 1986 the Bell-Boeing partnership was awarded a $1.714 billion contract for V-22 aircraft by the Navy, thus at this point the project had acquisition plans with all four arms of the U.S. military.[17]
The first V-22 was rolled out with significant media attention in May 1988.[18][19] However the project suffered several political blows. Firstly in the same year, the Army left the program, citing a need to focus its budget on more immediate aviation programs.[20] The project also faced considerable dialogue in the Senate, surviving two votes that both could have resulted in cancellation.[21][22] Despite the Senate's decision, the Department of Defense instructed the Navy not to spend more money on the Osprey.[23] At the same time, the Bush administration sought the cancellation of the project.[23]
Flight testing and design changes
The first of six MV-22 prototypes first flew on 19 March 1989 in the helicopter mode,[24] and on 14 September 1989 as a fixed-wing plane.[25] The third and fourth prototypes successfully completed the Osprey's first Sea Trials on the USS Wasp in December 1990.[26] However, the fourth and fifth prototypes crashed in 1991-92.[27] Flight tests were resumed in August 1993 after changes were incorporated in the prototypes.[2] From October 1992 until April 1993, Bell and Boeing redesigned the V-22 to reduce empty weight, simplify manufacture and reduce production costs. This redesigned version became the B-model.[28]
Flight testing of four full-scale development V-22s began in early 1997 when the first pre-production V-22 was delivered to the Naval Air Warfare Test Center, Naval Air Station Patuxent River, Maryland. The first EMD flight took place on 5 February 1997. The first of four low rate initial production aircraft, ordered on 28 April 1997, was delivered on 27 May 1999. Osprey number 10 completed the program's second Sea Trials, this time from the USS Saipan in January 1999.[2] During external load testing in April 1999, Boeing used a V-22 to lift and transport the M777 howitzer.[29] In 2000, Boeing announced that the V-22 would be fitted with a nose-mounted GAU-19 Gatling gun,[30] but the GAU-19 gun was later canceled.[31]
In 2000, there were two further fatal crashes, killing a total of 19 Marines, and the production was again halted while the cause of these crashes was investigated and various parts were redesigned.[32] The V-22 completed its final operational evaluation in June 2005. The evaluation was deemed successful; events included long range deployments, high altitude, desert and shipboard operations. The problems identified in various accidents had been addressed.[33]
Controversy
The V-22's development process has been long and controversial, partly due to its large cost increases.[34] When the development budget, first planned for $2.5 billion in 1986, increased to a projected $30 billion in 1988, then-Defense Secretary Dick Cheney tried to zero out its funding. He was eventually overruled by Congress.[32] As of 2008, $27 billion have been spent on the Osprey program and another $27.2 billion will be required to complete planned production numbers by the end of the program.[2]
The V-22 squadron's former commander at Marine Corps Air Station New River, Lt. Colonel Odin Lieberman, was relieved of duty in 2001 after allegations that he instructed his unit that they needed to falsify maintenance records to make the plane appear more reliable.[2][35] Three officers were later implicated in the falsification scandal.[34]
The aircraft is incapable of autorotation, and is therefore unable to land safely in helicopter mode if both engines fail. A director of the Pentagon's testing office in 2005 said that if the Osprey loses power while flying like a helicopter below 1,600 feet (490 m), emergency landings "are not likely to be survivable". But Captain Justin (Moon) McKinney, a V-22 pilot, says that this will not be a problem, "We can turn it into a plane and glide it down, just like a C-130".[31] A complete loss of power would require the failure of both engines, as a drive shaft connects the nacelles through the wing; one engine can power both proprotors.[36] While vortex ring state (VRS) contributed to a deadly V-22 accident, the aircraft is less susceptible to the condition than conventional helicopters and recovers more quickly.[5] The Marines now train new pilots in the recognition of and recovery from VRS and have instituted operational envelope limits and instrumentation to help pilots avoid VRS conditions.[32][37]
It was planned in 2000 to equip all V-22s with a nose-mounted Gatling gun, to provide "the V-22 with a strong defensive firepower capability to greatly increase the aircraft's survivability in hostile actions."[30] The nose gun project was canceled however, leading to criticism by retired Marine Corps Commandant General James L. Jones, who is not satisfied with the current V-22 armament.[31] A belly-mounted turret was later installed on some of the first V-22s sent to the War in Afghanistan in 2009.[38]
With the first combat deployment of the MV-22 in October 2007, Time Magazine ran an article condemning the aircraft as unsafe, overpriced, and completely inadequate.[31] The Marine Corps, however, responded with the assertion that much of the article's data were dated, obsolete, inaccurate, and reflected expectations that ran too high for any new field of aircraft.[39]
Recent development
On 28 September 2005, the Pentagon formally approved full-rate production for the V-22.[40] The plan is to boost production from 11 a year to between 24 and 48 a year by 2012. Of the 458 total planned, 360 are for the Marine Corps, 48 for the Navy, and 50 for the Air Force at an average cost of $110 million per aircraft, including development costs.[2] The V-22 had an incremental flyaway cost of $70 million per aircraft in 2007,[3] but the Navy hopes to shave about $10 million off that cost after a five-year production contract starts in 2008.[41]
The Bell-Boeing Joint Project Office in Amarillo, Texas will design a new integrated avionics processor to resolve electronics obsolescence issues and add new network capabilities.[42]
Design
The Osprey is the world's first production tiltrotor aircraft, with one three-bladed proprotor, turboprop engine, and transmission nacelle mounted on each wingtip. It is classified as a powered lift aircraft by the Federal Aviation Administration.[43] For takeoff and landing, it typically operates as a helicopter with the nacelles vertical (rotors horizontal). Once airborne, the nacelles rotate forward 90° in as little as 12 seconds for horizontal flight, converting the V-22 to a more fuel-efficient, higher-speed turboprop airplane. STOL rolling-takeoff and landing capability is achieved by having the nacelles tilted forward up to 45°. For compact storage and transport, the V-22's wing rotates to align, front-to-back, with the fuselage. The proprotors can also fold in a sequence taking 90 seconds.[44]
Most Osprey missions will use fixed wing flight 75 percent or more of the time, reducing wear and tear on the aircraft and reducing operational costs.[45] This fixed wing flight is higher than typical helicopter missions allowing longer range line-of-sight communications and so improved command and control.[2] Boeing has stated the V-22 design loses 10% of its vertical lift over a Tiltwing design when operating in helicopter mode because of airflow resistance due to the wings, but that the Tiltrotor design has better short takeoff and landing performance.[46]
The V-22 is equipped with a glass cockpit, which incorporates four Multi-function displays (MFDs) and one shared Central Display Unit (CDU), allowing the pilots to display a variety of images including: digimaps centered or decentered on current position, FLIR imagery, primary flight instruments, navigation (TACAN, VOR, ILS, GPS, INS), and system status. The flight director panel of the Cockpit Management System (CMS) allows for fully-coupled (aka: autopilot) functions which will take the aircraft from forward flight into a 50-foot hover with no pilot interaction other than programming the system.[47] The glass cockpit of the canceled CH-46X was derived from the V-22.[48]
The V-22 is a fly-by-wire aircraft with triple-redundant flight control systems.[49] With the nacelles pointing straight up in conversion mode at 90° the flight computers command the aircraft to fly like a helicopter, with cyclic forces being applied to a conventional swashplate at the rotor hub. With the nacelles in airplane mode (0°) the flaperons, rudder, and elevator fly the aircraft like an airplane. This is a gradual transition and occurs over the rotation range of the nacelles. The lower the nacelles, the greater effect of the airplane-mode control surfaces.[50] The nacelles can rotate past vertical to 97.5° for rearward flight.[51][52]
The Osprey can be armed with one M240 7.62x51mm NATO (.308 in caliber) or M2 .50 in caliber (12.7 mm) machine gun on the loading ramp, that can be fired rearward when the ramp is lowered. A GAU-19 three-barrel .50 in gatling gun mounted below the V-22's nose has also been studied for future upgrade.[31][53] BAE Systems developed a remotely operated turreted weapons system for the V-22,[54] which was installed on half of the first V-22s deployed to Afghanistan in 2009.[38] The 7.62 mm belly gun turret is remotely operated by a gunner inside the aircraft, who acquires targets with a separate pod using color television and forward looking infrared imagery.
U.S. Naval Air Systems Command is working on upgrades to increase the maximum speed from 250 knots (460 km/h; 290 mph) to 270 knots (500 km/h; 310 mph), increase helicopter mode altitude limit from 10,000 feet (3,000 m) to 12,000 feet (3,700 m) or 14,000 feet (4,300 m), and increase lift performance.[55]
Operational history
US Marine Corps
Marine Corps crew training on the Osprey has been conducted by VMMT-204 since March 2000. On 3 June 2005, the Marine Corps helicopter squadron Marine Medium Helicopter 263 (HMM-263), stood down to begin the process of transitioning to the MV-22 Osprey.[56] On 8 December 2005, Lieutenant General Amos, commander of the II MEF, accepted the delivery of the first fleet of MV-22s, delivered to HMM-263. The unit reactivated on 3 March 2006 as the first MV-22 squadron and was redesignated VMM-263. On 31 August 2006, VMM-162 (the former HMM-162) followed suit. On 23 March 2007, HMM-266 became Marine Medium Tiltrotor Squadron 266 (VMM-266) at Marine Corps Air Station New River, North Carolina.[57]
The Osprey has been replacing existing CH-46 Sea Knight squadrons.[58] The MV-22 reached initial operational capability (IOC) with the U.S. Marine Corps on 13 June 2007.[1] On 10 July 2007 an MV-22 Osprey landed aboard the Royal Navy aircraft carrier, HMS Illustrious in the Atlantic Ocean. This marked the first time a V-22 had landed on any non-U.S. vessel.[59]
On 13 April 2007, the U.S. Marine Corps announced that it would be sending ten V-22 aircraft to Iraq, the Osprey's first combat deployment. Marine Corps Commandant, General James Conway, indicated that over 150 Marines would accompany the Osprey set for September deployment to Al-Asad Airfield.[60][61] On 17 September 2007, ten MV-22Bs of VMM-263 left for Iraq aboard the USS Wasp. The decision to use a ship rather than use the Osprey's self-deployment capability was made because of concerns over icing during the North Atlantic portion of the trip, lack of available KC-130s for mid-air refueling, and the availability of the USS Wasp.[62]
The Osprey has provided support in Iraq, racking up some 2,000 flight hours over three months with a mission capable availability rate of 68.1% as of late-January 2008.[63] They are primarily used in Iraq's western Anbar province for routine cargo and troop movements, and also for riskier "aero-scout" missions. General David Petraeus, the top U.S. military commander in Iraq, used one to fly around Iraq on Christmas Day 2007 to visit troops.[64] Then-presidential candidate Barack Obama also flew in Ospreys during his high profile 2008 tour of Iraq.[65]
The only major problem has been obtaining the necessary spare parts to maintain the aircraft.[66] The V-22 had flown 3,000 sorties totaling 5,200 hours in Iraq as of July 2008.[67] USMC leadership expect to deploy MV-22s to Afghanistan in 2009.[66][68] General George J. Trautman, III praised the increased range of the V-22 over the legacy helicopters in Iraq and said that "it turned his battle space from the size of Texas into the size of Rhode Island."[69]
Naval Air Systems Command has devised a temporary fix for sailors to place portable heat shields under Osprey engines to prevent damage to the decks of some of the Navy's smaller amphibious ships, but they determined that a long term solution to the problem would require these decks be redesigned with heat resistant deck coatings, passive thermal barriers and changes in ship structure in order to operate V-22s and F-35Bs.[70]
A Government Accountability Office study reported that by January 2009 the Marines had 12 MV-22s operating in Iraq and they managed to successfully complete all assigned missions. The same report found that the V-22 deployments had mission capable rates averaging 57% to 68% and an overall full mission capable rate of only 6%. It also stated that the aircraft had shown weakness in situational awareness, maintenance, shipboard operations and the ability to transport troops and external cargo.[71] That study also concluded that the "deployments confirmed that the V-22’s enhanced speed and range enable personnel and internal cargo to be transported faster and farther than is possible with the legacy helicopters it is replacing".[71]
The MV-22 saw its first offensive combat mission, Operation Cobra's Anger on 4 December 2009. Ospreys assisted in inserting 1,000 Marines and 150 Afghan troops into the Now Zad Valley of Helmand Province in southern Afghanistan to disrupt communication and supply lines of the Taliban.[38] In January 2010 the MV-22 Osprey is being sent to Haiti as part of Operation Unified Response relief efforts after the earthquake there. This will be the first use the Marine V-22 in a humanitarian mission.[72]
US Air Force
The Air Force's first operational CV-22 Osprey was delivered to the 58th Special Operations Wing (58th SOW) at Kirtland Air Force Base, New Mexico on 20 March 2006. This and subsequent aircraft will become part of the 58th SOW's fleet of aircraft used for training pilots and crew members for special operations use.[73] On 16 November 2006, the Air Force officially accepted the CV-22 in a ceremony conducted at Hurlburt Field, Florida.[74]
The US Air Force's first operational deployment of the Osprey sent four CV-22s to Mali in November 2008 in support of Exercise Flintlock. The CV-22s flew nonstop from Hurlburt Field, Florida with in-flight refueling.[5] AFSOC declared that the 8th Special Operations Squadron reached Initial Operational Capability on 16 March 2009, with six of its planned nine CV-22s operational.[75]
In June 2009, CV-22s of the 8th Special Operations Squadron delivered 43,000 pounds (20,000 kg) of humanitarian supplies to remote villages in Honduras that were not accessible by conventional vehicles.[76] In November 2009, the 8th SO Squadron and its six CV-22s returned from a three-month deployment in Iraq.[77]
The first possible combat loss of an Osprey occurred on 9 April, 2010, as a CV-22 went down near Qalat, Zabul Province, Afghanistan, killing four.[78][79]
Potential operators
In 1999 the V-22 was studied for use in the United Kingdom's Royal Navy,[80] it has been raised several times as a candidate for the role of Maritime Airborne Surveillance and Control (MASC).[81]
Israel had shown interest in the purchase of MV-22s, but no order was placed.[82][83] Flightglobal reported in late 2009 that Israel has decided to wait for the CH-53K instead.[84]
The V-22 Osprey is a candidate for the Norwegian All Weather Search and Rescue Helicopter (NAWSARH) that is planned to replace the Westland Sea King Mk.43B of the Royal Norwegian Air Force in 2015.[85] The other candidates for the NAWSARH contract of 10-12 helicopters are AgustaWestland AW101 Merlin, Eurocopter EC225, NHIndustries NH90 and Sikorsky S-92.[86]
Bell Boeing has made an unsolicited offer of the V-22 for US Army medical evacuation needs.[87] However the Joint Personnel Recovery Agency issued a report that said that a common helicopter design would be needed for both combat recovery and medical evacuation and that the V-22 would not be suitable for recovery missions because of the difficulty of hoist operations and lack of self-defense capabilities.[88]
The US Navy remains a potential user of the V-22, but its role and mission with the Navy remains unclear. The latest proposal is to replace the C-2 Greyhound with the V-22 in the fleet logistics role. The V-22 would have the advantage of being able to land on and support non-carriers with rapid delivery of supplies and people between the ships of a taskforce or to ships on patrol beyond helicopter range.[89] Loren B. Thompson of the Lexington Institute has suggested V-22s for use in combat search and rescue and Marine One VIP transport, which also need replacement aircraft.[90]
Variants
• V-22A
•• Pre-production full-scale development aircraft used for flight testing. These are unofficially considered A-variants after 1993 redesign.[91]
• HV-22
•• The U.S. Navy considered an HV-22 to provide combat search and rescue, delivery and retrieval of special warfare teams along with fleet logistic support transport. However, it chose the MH-60S for this role in 1992.[92]
• SV-22
•• The proposed anti-submarine warfare Navy variant. The Navy studied the SV-22 in the 1980s to replace S-3 and SH-2 aircraft.[93]
• MV-22B
•• Basic U.S. Marine Corps transport; original requirement for 552 (now 360). The Marine Corps is the lead service in the development of the V-22 Osprey. The Marine Corps variant, the MV-22B, is an assault transport for troops, equipment and supplies, capable of operating from ships or from expeditionary airfields ashore. It is replacing the Marine Corps' CH-46E[57] and CH-53D.[94]
• CV-22B
•• Air Force variant for the U.S. Special Operations Command (USSOCOM). It will conduct long-range, special operations missions, and is equipped with extra fuel tanks and terrain-following radar.[95][96]
Operators
•• 8th Special Operations Squadron (8 SOS) at Hurlburt Field, Florida
•• 71st Special Operations Squadron (71 SOS) at Kirtland Air Force Base, New Mexico
•• 20th Special Operations Squadron (20 SOS) at Cannon Air Force Base, New Mexico
•• VMM-161
•• VMM-162
•• VMM-261
•• VMM-263
•• VMM-264
•• VMM-266
•• VMM-365
•• VMMT-204 - Training squadron
•• VMX-22 - Marine Tiltrotor Operational Test and Evaluation Squadron
Notable accidents
Main article: Accidents and incidents involving the V-22 Osprey
From 1991 to 2000 there were four significant crashes, and a total of 30 fatalities, during testing.[32] Since becoming operational in 2007, the V-22 has had one possible combat loss due to an unknown cause, no losses due to accidents, and seven other notable, but minor, incidents.
• On 11 June 1991, a mis-wired flight control system led to two minor injuries when the left nacelle struck the ground while the aircraft was hovering 15 feet (4.6 m) in the air, causing it to bounce and catch fire.[97]
• On 20 July 1992, a leaking gearbox led to a fire in the right nacelle, causing the aircraft to drop into the Potomac River in front of an audience of Congressmen and other government officials at Quantico, killing all seven on board and grounding the aircraft for 11 months.[98]
• On 8 April 2000, a V-22 loaded with Marines to simulate a rescue, attempted to land at Marana Northwest Regional Airport in Arizona, stalled when its right rotor entered vortex ring state, rolled over, crashed, and exploded, killing all 19 on board.[37]
• On 11 December 2000, after a catastrophic hydraulic leak and subsequent software instrument failure, a V-22 fell 1,600 feet (490 m) into a forest in Jacksonville, North Carolina, killing all four aboard. This caused the Marine Corps to ground their fleet of eight V-22s, the second grounding that year.[99][100]
Specifications (MV-22B)
Data from Boeing Integrated Defense Systems,[101] Naval Air Systems Command,[102] US Air Force CV-22 fact sheet,[95] Norton,[103] and Bell[104]
General characteristics
• Crew: Four (pilot, copilot and two flight engineers)
• Capacity: 24 troops (seated), 32 troops (floor loaded) or up to 15,000 lb (6,800 kg) of cargo (dual hook)
• Length: 57 ft 4 in (17.5 m)
• Rotor diameter: 38 ft 0 in (11.6 m)
• Wingspan: 45 ft 10 in (14 m)
• Width with rotors: 84 ft 7 in (25.8 m)
• Height: 22 ft 1 in/6.73 m; overall with nacelles vertical (17 ft 11 in/5.5 m; at top of tailfins)
• Disc area: 2,268 ft² (212 m²)
• Wing area: 301.4 ft² (28 m²)
• Empty weight: 33,140 lb (15,032 kg)
• Loaded weight: 47,500 lb (21,500 kg)
• Max takeoff weight: 60,500 lb (27,400 kg)
• Powerplant: 2× Rolls-Royce Allison T406/AE 1107C-Liberty turboshafts, 6,150 hp (4,590 kW) each
Performance
• Maximum speed: 250 knots (460 km/h, 290 mph) at sea level / 305 kn (565 km/h; 351 mph) at 15,000 ft (4,600 m)[105]
• Cruise speed: 241 knots (277 mph, 446 km/h) at sea level
• Range: 879 nmi (1,011 mi, 1,627 km)
• Combat radius: 370 nmi (426 mi, 685 km)
• Ferry range: 1,940 nmi (with auxiliary internal fuel tanks)
• Service ceiling: 26,000 ft (7,925 m)
• Rate of climb: 2,320 ft/min (11.8 m/s)
• Disc loading: 20.9 lb/ft² at 47,500 lb GW (102.23 kg/m²)
• Power/mass: 0.259 hp/lb (427 W/kg)
Armament
• 1× M240 machine gun on ramp, optional
Notable appearances in media
Main article: Aircraft in fiction#V-22 Osprey
See also
• Elizabeth A. Okoreeh-Baah, USMC - first female to pilot a V-22 Osprey
Related development
Comparable aircraft
Related lists
• List of military aircraft of the United States
References
Bibliography
• Markman, Steve and Bill Holder. "Bell/Boeing V-22 Osprey Tilt-Engine VTOL Transport (U.S.A.)". Straight Up: A History of Vertical Flight. Schiffer Publishing, 2000. ISBN 0-7643-1204-9.
• Norton, Bill. Bell Boeing V-22 Osprey, Tiltrotor Tactical Transport. Midland Publishing, 2004. ISBN 1-85780-165-2.
External links
Wikimedia Commons has media related to: V-22 Osprey
• V-22 Osprey web, and www.history.navy.mil/planes/v-22.html
• CV-22 fact sheet on USAF site
• www.globalsecurity.org/military/systems/aircraft/v-22.htm
• www.airforce-technology.com/projects/osprey/
• "Flight of the Osprey", US Navy video of V-22 operations
Prior Park Landscape Garden, designed by Capability Brown and Alexander Pope. The Palladian Bridge added by Richard Jones to the original plans of John Wood designer of Prior Park (far in the distance.)
Bath, Somerset, UK.
All rights reserved. No use & distribution without express written permission. Strictly enforced.
Temple Newsam (historically Temple Newsham), (grid reference SE357322) is a Tudor-Jacobean house in Leeds, West Yorkshire, England, with grounds landscaped by Capability Brown.
The estate lends its name to the Temple Newsam ward of Leeds City Council, in which it is situated, and lies to the east of the city, just south of Halton Moor, Halton, Whitkirk and Colton. It is one of nine sites in the Leeds Museums & Galleries group.
The house is a Grade I listed building, defined as a "building of outstanding or national architectural or historic interest". The stables are Grade II* listed ("particularly significant buildings of more than local interest"), and ten separate features of the estate are Grade II listed ("buildings of special architectural or historic interest"), including the Sphinx Gates and the Barn.[1] Temple Newsam House is one of Leeds Museums and Galleries sites.[2] It is also part of the research group, Yorkshire Country House Partnership.[3]
History
1066 to 1520
In the Domesday Book of 1086 the manor is listed as Neuhusam (meaning new houses) and was held by Ilbert de Lacy and his sons.[4] Before the Norman Conquest of 1066 it had been held by Dunstan and Glunier, Anglo-Saxon thanes.[4] In about 1155, Henry de Lacy gave it to the Knights Templar, who built Temple Newsam Preceptory on a site near the present house.[5] The Templars farmed the estate very efficiently, with 1100 animals.[6] In 1307 the Templars were suppressed, and Edward II granted the manor to Sir Robert Holland who held it until 1323 when he was deprived of his estates.[6] The Templars tried to retake the estate but they were forced to surrender and in 1327 it was granted to Mary de St Pol, the Countess of Pembroke, who held the manor for 50 years.[6] In 1377 by royal decree the estate reverted to Philip Darcy, 4th Baron Darcy de Knayth (1341–1398).[6] It then passed through several members of the Darcy family, until it was inherited by the 21-year old Thomas, Lord Darcy in 1488.[7] Between 1500 and 1520 a Tudor manor house, known as Temple Newsam House, was built on the site.[8] It has also been spelled "Newsham" in the past.[9]
An oil on panel painting by Hans Eworth of Henry Stuart and his brother Charles Stuart in a grand interior based on a print by Hans Vreedman de Vries
An oil on panel painting from 1563 by Hans Eworth of Henry Stuart and his brother Charles Stuart in a grand interior based on a print by Hans Vreedman de Vries which may reflect Temple Newsam's Great Chamber
1500 to 1650
In 1537 Thomas, Lord Darcy was executed for the part he played in the Pilgrimage of Grace and the property was seized by the Crown.[7] In 1544 Henry VIII gave it to his niece Lady Margaret Douglas (Countess of Lennox), and she lived there with her husband Matthew Stewart, 4th Earl of Lennox.[7] Their son Henry Stuart, Lord Darnley, who was born in the house in 1545 and educated there, married Mary, Queen of Scots, by whom he was the father of King James VI of Scotland and I of England.[10] A portrait of Henry and his brother was probably intended to represent the interior of Temple Newsam despite being based on a print of an ideal interior.[11] Following the marriage in 1565, Temple Newsam was seized by Queen Elizabeth I and was managed by an agent.[12]
In 1609 King James I, successor to Elizabeth, granted the estate to his Franco-Scottish second cousin Ludovic Stewart, 2nd Duke of Lennox (1574–1624), who was a favourite of the King and given many titles and estates, including farmland and coalmines in the local area.[13] Despite his opportunities, Ludovic was in constant debt and he mortgaged the estate in 1614 for the sum of £9,000 (around £860,000 in today's money).[14] In 1622 Lennox began the sale of the estate to Sir Arthur Ingram (c. 1565 – 1642), a Yorkshire-born London merchant, civil servant, investor in colonial ventures and arms dealer, for £12,000, which he paid in two instalments, the last in July 1624, after Lennox's death.[14] During the next 20 years the mansion was rebuilt, incorporating some of the previous house in the west wing.[8] The north and south wings were rebuilt and the east wing was demolished after a bad fire in 1635.[15] Arthur's son, also called Arthur, inherited the estate with its debts and continued the building and renovation work.[16] Six months after Charles I was beheaded in 1649, Arthur Ingram the younger was declared delinquent and he compounded his estates and retired to Temple Newsam.[17]
1650 to 1900
After the death of Arthur the younger's eldest son, Thomas, in 1660, Temple Newsam was inherited by Arthur's second son, Henry Ingram, 1st Viscount of Irvine (created a peer of Scotland as Baron Ingram and Viscount of Irvine in 1661 - although the family used the English form "Irwin").[18] In 1661, Henry married Lady Essex Montagu, daughter of Edward Montagu, 2nd Earl of Manchester, a favourite of Charles II.[18] The estate then passed through Henry's two sons and five grandsons, the last being Henry Ingram, 7th Viscount of Irvine.[18] The 4th Viscount brought back paintings from his Grand Tour of 1704-7.[19] Extant receipts from 1692 show women as well as men were employed to work the estate in haymaking.[20] In 1712, William Etty designed a new approach to the house, with a bridge and ponds.[21][22] In 1714, Temple Newsam was inherited by Rich Ingram, the 5th Viscount, and his wife Ann who spent a vast fortune furnishing the house and creating the East Avenue.[19] Between 1738 and 1746, Henry Ingram, 7th Viscount of Irvine remodelled the west and north wings of the house, creating new bedrooms and dressing rooms and the picture gallery.[23] A painting in Leeds City Art Gallery by Philippe Mercier of c. 1745 shows Henry and his wife standing in front of Temple Newsam House.[24]
A coloured engraving made in 1699 by J Kip after a drawing by Leonard Knyff showing an aerial view of the house and estate at Temple Newsam
1699 Engraving by J Kip after a drawing by Leonard Knyff
In the 1760s, Charles Ingram, 9th Viscount of Irvine, employed Capability Brown to re-landscape the park on the insistence of his wife, Frances Shepheard, daughter of Samuel Shepheard.[25] Reflecting her interest in pastoral landscape design, Frances is depicted as a shepherdess in a portrait by Benjamin Wilson at Temple Newsam.[25] Both Frances and Charles were actively involved in the design and implementation.[26] Some aspects of Brown's plan depicted in paintings by James Chapman and Michael Angelo Rooker were never completed such as a large lake near the house.[26] Extant financial records show that in 1759 women as well as men were employed as garden labourers.[20] After Charles died in 1778, Frances rebuilt the south wing in 1796; she lived at Temple Newsam until her death in 1807.[27] Charles and Frances's eldest daughter Isabella Ingram, (Marchioness of Hertford) (d.1834) who inherited Temple Newsam, was the mistress of the Prince of Wales (later King George IV) from 1806 to 1819. In 1806, George visited Temple Newsam and presented Isabella with Chinese wallpaper, which she hung in the small Drawing Room next to the Great Hall in around 1820, embellished with cut out birds from Audubon's The Birds of America (now worth £7.5 million).[28] Lady Hertford inherited the house in 1807; after her husband died in 1822 she spent the season in London, and the rest of the time at Temple Newsam where she involved herself in charitable works including distributing food and clothing to the local people.[29] She allowed the servants to hold an annual supper and ball at Temple Newsam.[29] Reports of poachers were made during 1826 and 1827.[30] During the last years of Isabella's life, the canal, railway and roads encroached on the estate as well as coal mining; and she dealt with the companies setting these up.[29] In 1820 the novelist Sir Walter Scott published Ivanhoe featuring a Templar preceptory named Temple Stowe, believed to have been modelled on Temple Newsam; the name is preserved in local road names such as Templestowe Crescent.[31] At her death in 1834, Isabella left Temple Newsam to her widowed sister, Frances Ingram Shepheard, wife of Lord William Gordon, who died in 1841.[32]
Temple Newsam House from Morris's Country Seats (1880)
In 1841 the estate was inherited by Hugo Charles Meynell Ingram (d. 1869), son of Elizabeth Ingram, sister of Frances Ingram (Lady Gordon), who made no alterations to the estate.[33] In 1868, the Prince of Wales stayed at Temple Newsam during his visit to Leeds to open the Fine Art Exhibition in the New Infirmary; temporary triumphal arches were erected on the estate.[34] Following Hugo Charles's death, his son Hugo Meynell-Ingram (d.1871) inherited Temple Newsam; two years later, at his death, his wife Emily Meynell Ingram (d.1904) inherited the estate.[33] Emily spent a large part of her widowhood at Temple Newsam; she developed it considerably by replacing the sash windows and remodelling the dining room, great staircase and Lord Darnley's room.[33] Emily bequeathed Temple Newsam to her nephew Edward Wood, 1st Earl of Halifax.[8]
20th century
In 1909, 610 acres (2.5 km2) of the estate at Knostrop were compulsorily purchased by Leeds Corporation to build a sewage plant.[35] During the First World War (1914–17) the south wing of the house was turned into a hospital by Edward Wood and his wife Dorothy. Edward Wood fought in France as part of the Yorkshire Hussars, whilst Dorothy oversaw the running of the hospital as part of the Mayors War Committee.[36] In 1922 Edward Wood sold the park and house to Leeds Corporation for a nominal sum, placing covenants over them to ensure their preservation for the future.[35]
On 19 October 1923, Temple Newsam was opened to the public along with a golf course.[37] In the Derby Daily Telegraph newspaper, Temple Newsam was compared to Hampton Court.[37] Despite many people visiting the house and using the golf course, the Corporation lost money during the first decade mostly due to poor farming practices.[37] In July 1932, the Great Yorkshire Show was held at Temple Newsam and was a great success.[37] Preparations for war were made as early as April 1939, and in August, small items were being packed up for storage.[37] In September 1939, Temple Newsam was closed to the public and items were moved there for storage from Leeds City Art Gallery.[37] It was decided that objects would be displayed, and the house was officially reopened in November 1939, when it was again likened to Hampton Court in the press.[37]
Architecture
Photograph of entrance porch of Temple Newsam House, Leeds, showing at top the word 'FATHER', below a mullioned window, below a raised portico with coat of arms above a doorway flanked by two Ionic columns on each side.
Entrance Porch 17th century
Photograph of the west front of Temple Newsam
Centre of Temple Newsam west front
Remains of the early 16th century house were retained in the new building, including the brickwork and bay windows in the centre of the west front.[38] The plan of the new house was a conservative E-shape.[38] The Long Gallery and entrance hall in the south wing followed Elizabethan and early Jacobean styles.[38] The entrance porch has Classical columns but they are of Flemish design, rather than following correct Italian design.[38] There are Tudor doorways and timberwork in the cellars, which are largely Tudor in date.[39] Tudor features have also been discovered beneath later layers of decoration, including Lord Darcy's crest scratched into the plaster in the Blue Damask room.[40] An inventory of 1565 indicates that the hall, great chamber (later the dining room), gallery and chapel (later the kitchen) were probably where they are now.[40] There is a Tudor doorway in the north wing which was probably the entrance to the original chapel.[41]
In the 17th century, the south and north wings were rebuilt and the east wing demolished, replaced by a low wall with an arched gateway, giving the house a fashionable 'half-H' appearance.[39] It is possible that the man who made plans for the alteration was Bernard Dinninghof of York.[41] There is also some resemblance to designs by Inigo Jones.[42] Round the top of the house, letters appear in a balustrade, declaring the piety and loyalty of Sir Arthur Ingram: 'ALL GLORY AND PRAISE BE GIVEN TO GOD THE FATHER THE SON AND HOLY GHOST ON HIGH PEACE ON EARTH GOOD WILL TOWARDS MEN HONOUR AND TRUE ALLEGIANCE TO OUR GRACIOUS KING LOVING AFFECTION AMONGST HIS SUBJECTS HEALTH AND PLENTY BE WITHIN THIS HOUSE.'[38] The chapel in the north wing retains some 17th century features, such as armorial stained glass, probably by Henry Gyles and a carved wooden pulpit by Thomas Ventris, made around 1636, with geometric patterns, pilasters and friezes.[38] The walls had panels of Old Testament figures, painted by John Carleton.[38] An inventory dated 1667 records that the House had 66 rooms and 11 outhouses.[39] An engraving by Kip and Knyff dated 1699 is an accurate representation of the house, showing the varying height of the house and some buildings that were later demolished, including the arched gateway flanked by two small lodges and a detached garden building dating from the mid 1670s.[23]
Photograph of stone and brick Sphinx gate piers at Temple Newsam, c. 1760 by Lancelot Brown based on designs published by Lord Burlington in 1738 and used at Chiswick
Sphinx gate piers, c. 1760
Photograph of the mid-18th century stable block at Temple Newsam showing the pediment
Stable Block at Temple Newsam, added by Henry, 7th Lord Irwin
In 1718, the steward of Temple Newsam suggested an underground service passage to link the north and south wings to the 5th Viscount, who agreed.[43] This tunnel linked the original kitchens in the south wing to the rest of the house.[44] In 1738, Henry, 7th Viscount Irwin wrote to his mother describing the neglected state of the house with windows coming away and cracked brickwork.[23] The house was almost entirely remodelled by Henry.[38] He wanted to follow Palladian design and used craftsmen from York to do so.[45] He widened the gallery, improved the ceiling and windows and created additional rooms.[23] The gallery, completed around 1746, has fine Rococo carvings with overmantle paintings of classical scenes by Antonio Joli.[19] There are also elaborate gilded Rococo ornamental candle holders.[19] The gallery ceiling has detailed stucco work including a medallion of King George I.[19] The ceilings in the new Saloon and Library, made from the old Long Gallery, were decorated by Thomas Perritt and Joseph Rose.[45] The doorcases are elaborately carved, probably by Richard Fisher.[45] Two chimney pieces in the Saloon were based on designs by William Kent.[45] The distinctive sphinx gate piers by Lancelot Brown constructed in 1768 were based on designs published by Lord Burlington in 1738 and used at Chiswick.[45][1] The main rooms in the west wing were redecorated and the windows were replaced with sliding sash windows.[45] A large pedimented stable block was built to the north of the house, in 1742 and probably designed by Daniel Garratt, also in the Palladian style.[45][46] A painting by Mercier of around 1749, also shows a planned block to the south and a low wall connecting the north and south wings which were never completed.[23][21]
In 1796, Frances Shepheard employed a Mr Johnson to alter and reface the south wing in a style which tried to copy that of Sir Arthur Ingram's original house.[45] Her approach was a departure from the designs for the wing commissioned by her dead husband from John Carr and Robert Adam, as well as the landscaping by Capability Brown who was also consulted about rebuilding the south wing.[45] The wing was made two storeys high throughout with a suite of reception rooms on the ground floor with state bedchambers above.[27] In the 1790s, the kitchens were moved to the north wing and the original kitchen became a brushing room where servants brushed down nobles returning from hunting parties.[44]
At the end of the 19th century, Emily Meynell Ingram replaced the sash windows with stone mullions and leaded lights and rebuilt the north porch adding the Meynell Ingram coat of arms over the doorway.[27] She redecorated several rooms and had the great oak staircase installed.[27] The dining room, great staircase and Lord Darnley's room were remodelled in Elizabethan style.[33] In 1877, Emily converted the library at the east end of the gallery into a chapel.[47]
Coalmining on the estate
Estate records show the existence of coal pits in and around the park in the seventeenth century and Bell Wood to the south of the house would have had bell pits for coal extraction. A colliery at Halton village was leased to a number of different individuals from 1660 through to at least the 1790s. The leases generally required the leaseholder to supply coals to Temple Newsam house.[48]
In 1815, William Fenton, one of the 'Coal Kings' of Yorkshire,[49] began the sinking of a mine shaft on the estate at Thorpe Stapleton. The colliery was named Waterloo to commemorate the famous battle of that year.[50] Waterloo Colliery was operated as a royalty concession with contracted 'rents' for coal extracted going to the Temple Newsam landowner. Fenton also had a village built for his workers on land between the River Aire and the Aire and Calder navigation. The village was initially called Newmarket but then became Irwin Square on ordnance survey maps[51] and Ingram Place on census lists, but it was commonly simply known as Waterloo. The Yorkshire, Lancashire and England cricketer Albert Ward was born here in 1865. The village had two rows of cottages and a school building. It was connected to the colliery by a wooden footbridge over the river.[52] Deep coal mining on the estate ended with the closure of the Temple Pit of Waterloo Main Colliery in 1968.
Temple Newsam House
Opencast mining on the estate began in May 1942. Seven sites were exploited to the south of the house almost entirely destroying Capability Brown's landscape. One site reached within 330 feet (100 m) of the South Terrace. It continued at the Gamblethorpe site as far as Dawson's Wood, in full view of the house, until 1987.[53] No trace of the opencast remains now as the parkland was re-landscaped.
In 2019 there was a temporary exhibition about coal mining at Temple Newsam which was called 'Blot on the Landscape'.[54]
House and estate today
The house and estate are owned by Leeds City Council and open to the public. The house has undergone substantial restoration to its exterior. There is an established programme of restoring rooms back to known previous configurations, reversing the numerous intrusive installations and modifications that took place during the building's "art museum" phase.
The wider estate is made up of woods (the second largest part of the Forest of Leeds).[55] There are sporting facilities for football, golf, running, cycling, horse-riding and orienteering. There is an innovative children's playground opened in 2011 which caters for both disabled and able-bodied children.[56] Pegasus Wood, to the south of the house, commemorates veterans of the Normandy Landing at Pegasus Bridge in 1944.[57]
Photograph of brick barn at the Home Farm, Temple Newsam
Great Barn, Home Farm, Temple Newsam
The Home Farm, open to the public, has a barn built in 1694 and is the largest working rare breeds farm in Europe, and only one of 16 nationally approved by the Rare Breeds Survival Trust. Breeds include Gloucester, Kerry, Irish Moiled, Red Poll, White Park, British White, Beef Shorthorn, Vaynol and Belted Galloway cattle; Kerry Hill; Whitefaced Woodland and Portland sheep, and Golden Guernsey goats.[58] The farm was targeted by arsonists twice in 2011 with damage caused to buildings, and some animals killed.[59]
There are extensive gardens, with a celebrated rhododendron walk and six national plant collections: Aster novi-belgii (Michaelmas daisies), Phlox paniculata, Delphinium elatum (Cultivars), Solenostemon scutellarioides (sys. Coleus blumei), Primula auricula and Chrysanthemum (Charm and Cascade cultivars).[60] Within the Walled Garden there are 800 yards of herbaceous borders.[61]
Collections
There are substantial holdings of fine and decorative art which are designated by the Department of Culture, Media and Sport (DCMS) as being of national significance.[62]
Of most significant historical and cultural interest is the Chippendale Society collection of Chippendale works that are on permanent loan.[63] In his book "Britain's Best Museums and Galleries", Mark Fisher (a former DCMS minister) gave the museum an excellent review. When interviewed on Front Row, Radio 4, November 2004 Fisher placed Temple Newsam House in the top three non-national museums in the country, along with Birmingham's Barber Institute and the Dulwich Picture Gallery.[64]
Highclere Castle /ˈhaɪklɪər/ is a country house in the Jacobethan style, with a park designed by Capability Brown. The 5,000-acre (2,000 ha) estate is in Hampshire, England, United Kingdom, about 5 miles (8.0 km) south of Newbury, Berkshire. It is the county seat of the Earl of Carnarvon, a branch of the Anglo-Welsh Herbert family.[2]
Highclere Castle was a filming location for the British comedy series Jeeves and Wooster, which starred Hugh Laurie and Stephen Fry, and award-winning period drama Downton Abbey.[3] The castle and gardens are open to the public during July and August and at times during the rest of the year.
A visit to Charlecote Park for an afternoon visit to this National Trust property in Warwickshire. Near Stratford-upon-Avon. A deer park with a country house in the middle of it.
Charlecote Park (grid reference SP263564) is a grand 16th-century country house, surrounded by its own deer park, on the banks of the River Avon near Wellesbourne, about 4 miles (6 km) east of Stratford-upon-Avon and 5.5 miles (9 km) south of Warwick, Warwickshire, England. It has been administered by the National Trust since 1946 and is open to the public. It is a Grade I listed building.
The Lucy family owned the land since 1247. Charlecote Park was built in 1558 by Sir Thomas Lucy, and Queen Elizabeth I stayed in the room that is now the drawing room. Although the general outline of the Elizabethan house remains, nowadays it is in fact mostly Victorian. Successive generations of the Lucy family had modified Charlecote Park over the centuries, but in 1823, George Hammond Lucy (High Sheriff of Warwickshire in 1831) inherited the house and set about recreating the house in its original style.
Charlecote Park covers 185 acres (75 ha), backing on to the River Avon. William Shakespeare has been alleged to have poached rabbits and deer in the park as a young man and been brought before magistrates as a result.
From 1605 to 1640 the house was organised by Sir Thomas Lucy. He had twelve children with Lady Alice Lucy who ran the house after he died. She was known for her piety and distributing alms to the poor each Christmas. Her eldest three sons inherited the house in turn and it then fell to her grandchild Sir Davenport Lucy.
In the Tudor great hall, the 1680 painting Charlecote Park by Sir Godfrey Kneller, is said to be one of the earliest depictions of a black presence in the West Midlands (excluding Roman legionnaires). The painting, of Captain Thomas Lucy, shows a black boy in the background dressed in a blue livery coat and red stockings and wearing a gleaming, metal collar around his neck. The National Trust's Charlecote brochure describes the boy as a "black page boy". In 1735 a black child called Philip Lucy was baptised at Charlecote.
The lands immediately adjoining the house were further landscaped by Capability Brown in about 1760. This resulted in Charlecote becoming a hostelry destination for notable tourists to Stratford from the late 17th to mid-18th century, including Washington Irving (1818), Sir Walter Scott (1828) and Nathaniel Hawthorn (c 1850).
Charlecote was inherited in 1823 by George Hammond Lucy (d 1845), who married Mary Elizabeth Williams of Bodelwyddan Castle, from who's extensive diaries the current "behind the scenes of Victorian Charlecote" are based upon. GH Lucy's second son Henry inherited the estate from his elder brother in 1847. After the deaths of both Mary Elizabeth and Henry in 1890, the house was rented out by Henry's eldest daughter and heiress, Ada Christina (d 1943). She had married Sir Henry Ramsay-Fairfax, (d 1944), a line of the Fairfax Baronets, who on marriage assumed the name Fairfax-Lucy.
From this point onwards, the family began selling off parts of the outlying estate to fund their extensive lifestyle, and post-World War II in 1946, Sir Montgomerie Fairfax-Lucy, who had inherited the residual estate from his mother Ada, presented Charlecote to the National Trust in-lieu of death duties. Sir Montgomerie was succeeded in 1965 by his brother, Sir Brian, whose wife, Lady Alice, researched the history of Charlecote, and assisted the National Trust with the restoration of the house.
Charlecote Park House is a Grade I Listed Building
Listing Text
CHARLECOTE
SP2556 CHARLECOTE PARK
1901-1/10/19 Charlecote Park
06/02/52
(Formerly Listed as:
Charlecote Park House)
GV I
Formerly known as: Charlecote Hall.
Country house. Begun 1558; extended C19. Partly restored and
extended, including east range, 1829-34 by CS Smith;
north-east wing rebuilt and south wing extended 1847-67 by
John Gibson. For George and Mary Elizabeth Lucy.
MATERIALS: brick, that remaining from original building has
diapering in vitrified headers, but much has been replaced in
C19; ashlar dressings; tile roof with brick stacks with
octagonal ashlar shafts and caps.
PLAN: U-plan facing east, with later west range and south
wing.
EXTERIOR: east entrance front of 2 storeys with attic;
3-window range with long gabled projecting wings. Ashlar
plinth, continuous drip courses and coped gables with finials,
sections of strapwork balustrading between gables; quoins.
2-storey ashlar porch has round-headed entrance with flanking
pairs of Ionic pilasters and entablature, round-headed
entrance has panelled jambs, impost course and arch with lion
mask to key and 2 voussoirs, strapwork spandrels and stained
glass to fanlight over paired 4-panel doors; first floor has
Arms of Elizabeth I below projecting ovolo-moulded
cross-mullion window, with flanking pairs of Composite
detached columns; top balustrade with symmetrical balusters
supports Catherine wheel and heraldic beasts holding spears;
original diapered brick to returns.
3-light mullioned and transomed window to each floor to left,
that to first floor with strapwork apron. Large canted bay
window to right of 1:3:1 transomed lights with pierced
rosettes to parapet modelled on that to gatehouse (qv) and
flanked by cross-mullioned windows, all with moulded reveals
and small-paned sashes; C19 gables have 3-light
ovolo-mullioned windows with leaded glazing.
Wings similar, with 2 gables to 5-window inner returns,
ovolo-moulded cross-mullioned windows. Wing to south has much
diaper brickwork and stair window with strapwork apron.
East gable ends have 2-storey canted bay windows dated 1852 to
strapwork panels with Lucy Arms between 1:3:1-light transomed
windows; 3-light attic windows, that to north has patch of
reconstructed diaper brickwork to left.
Octagonal stair turrets to outer angles with 2-light windows,
top entablatures and ogival caps with wind vanes, that to
south mostly original, that to north with round-headed
entrance with enriched key block over studded plank door.
North side has turret to each end, that to west is wholly C19;
3 gables with external stacks with clustered shafts between;
cross-mullioned windows and 3-light transomed stair window on
strapwork apron; 2-light single-chamfered mullioned windows to
turrets.
Single-storey east range of blue brick has 2 bay windows with
octagonal pinnacles with pepper-pot finials and arcaded
balustrades over 1:4:1-light transomed windows; central panel
with Lucy Arms in strapwork setting has date 1833; coped
parapet with 3 gables with lights; returns similar with
3-light transomed windows.
Range behind has 3 renewed central gables and 2 lateral stacks
each with 6 shafts; gable to each end, that to south over
Tudor-arched verandah with arcaded balustrade to central arch
and above, entrance behind arch to left with half-glazed door,
blocked arch to right; first floor with cross-mullioned window
and blocked window, turret to right is wholly C19. South
return has cross-mullioned window to each floor and external
stack with clustered shafts.
South-west wing of 2 storeys; west side is a 7-window range;
recessed block to north end has window to each floor, the next
4 windows between octagonal pinnacles; gabled end breaks
forward under gable with turret to angle; rosette balustrade;
stacks have diagonal brick shafts, gable has lozenge with Lucy
Arms impaling Williams Arms (for Mary Elizabeth Lucy).
Cross-mullioned windows, but 2 southern ground-floor windows
are 3-light and transomed.
South end 4-window range between turrets has cross-mullioned
windows, but each end of first floor has bracketed oriel with
strapwork apron with Lucy/Williams Arms in lozenge and dated
1866, rosette balustrade with to each end a gable with 2-light
single-chamfered mullioned window with label, and 3 similar
windows to each turret, one to each floor.
East side has 3-window range with recessed range to right.
South end has Tudor-arched entrance and 3-light transomed
window, cross-mullioned window and 3-light transomed window to
first floor and gable with lozenge to south end; gable to
full-height kitchen to north has octagonal pinnacles flanking
4-light transomed window and gable above with square panel
with Lucy/Williams Arms to shield; recessed part to north has
loggia with entrance and flanking windows, to left a
single-storey re-entrant block with cross-mullioned windows;
first floor has 5 small sashed windows. South side of
south-east wing has varied brickwork with mullioned and
transomed windows, 2 external stacks and 2 gables with 3-light
windows.
INTERIOR: great hall remodelled by Willement with wood-grained
plaster ceiling with 4-centred ribs and Tudor rose bosses;
armorial glass attributed to Eiffler, restored and extended by
Willement; wainscoting and panelled doors; ashlar fireplace
with paired reeded pilasters and strapwork to entablature, and
fire-dogs; white and pink marble floor, Italian, 1845.
Dining room and library in west wing have rich wood panelling
by JM Willcox of Warwick and strapwork cornices, and strapwork
ceilings with pendants; wallpaper by Willement; dining room
has richly carved buffet, 1858, by Willcox and simple coloured
marble fireplace, the latter with bookshelves and fireplace
with paired pilasters and motto to frieze of fireplace, paired
columns and strapwork frieze to overmantel with armorial
bearings; painted arabesques to shutter backs.
Main staircase, c1700, but probably extensively reconstructed
in C19, open-well with cut string, 3 twisted balusters to a
tread, carved tread ends and ramped handrail;
bolection-moulded panelling in 2 heights, the upper panels and
panelled ceiling probably C19.
Morning room to south of hall has Willement decoration: white
marble Tudor-arched fireplace with cusped panels; plaster
ceiling with bands.
Ebony bedroom, originally billiard room, and drawing room to
north-east wing have 1856 scheme with cornices and
Jacobean-style plaster ceilings; white marble C18-style
fireplaces, that to Ebony Bedroom with Italian inserts with
Lucy crest. Drawing room has gilded and painted cornice and
ceiling, and large pier glasses.
Rooms to first floor originally guest bedrooms: doors with
egg-and-dart and eared architraves; C18-style fireplaces, that
to end room, originally Ebony Bedroom, has wood Rococo-style
fireplace with Chinoiserie panel; 1950s stair to attic.
South-east wing has c1700 stair, probably altered in C19, with
symmetrical balusters with acanthus, closed string; first
floor has wall and ceiling paintings: land and sea battle
scenes painted on canvas, male and female grisaille busts.
First floor has to west the Green Room, with Willement
wallpaper and simple Tudor-arched fireplace with
wallpaper-covered chimney board; adjacent room has marble
fireplace.
Death Room and its dressing room to east end have wallpaper of
gold motifs on white, painted 6-panel doors and architraves,
papier-mache ceilings; bedroom has fireplace with marble
architrave. Adjacent room has bolection-moulded panelling with
c1700 Dutch embossed leather. Stair to attic has c1700
balusters with club-form on acorn. Attics over great hall and
north-east and south-east wings have lime-ash floors and
servants' rooms, each with small annex and corner fireplace;
some bells.
South wing has kitchen with high ceiling and 2
segmental-arched recesses for C19 ranges; Tudor-arched recess
with latticed chamber for smoked meats over door.
Servants' hall has dark marble bolection-moulded fireplace and
cornice; scullery has bread oven, small range, pump and former
south window retaining glass.
First floor has to south end a pair of rooms added for Mary
Elizabeth Lucy in her widowhood; bedroom to east with deep
coved cornice and Adam-style fireplace, sitting room to west
similar, with gold on white wallpaper, white marble fireplace
with painted glass armorial panels and 1830s-40s carpet; door
to spiral timber turret staircase.
Nursery has fireplace with faceted panels and C19 Delft tiles;
probably 1920s wallpaper.
Other rooms with similar fireplaces and coloured glazed tiles.
While dating back to the C16, the house is one of the best
examples of the early C19 Elizabethan Revival style. Property
of National Trust.
(The Buildings of England: Pevsner, N & Wedgwood, A:
Warwickshire: Harmondsworth: 1966-: 227-9; The National Trust
Guide to Charlecote Park: 1991-; Wainwright C: The Romantic
Interior).
Listing NGR: SP2590656425
This text is from the original listing, and may not necessarily reflect the current setting of the building.
A look around the inside of the house / hall.
spiral staircase - goes upstairs.
SAC 01 Strategic Airlift Capability Boeing C-17A Globemaster III - cn F-207 landing @TRD/ENVA 27.02.16
Croome Court is a mid 18th century Neo-Palladian mansion surrounded by an extensive landscaped parkland at Croome D'Abitot, near Pershore in south Worcestershire. The mansion and park were designed by Lancelot "Capability" Brown for George Coventry, 6th Earl of Coventry, and was Brown's first landscape design and first major architectural project. Some of the internal rooms of the mansion were designed by Robert Adam.
The mansion house is owned by Croome Heritage Trust, and is leased to the National Trust who operate it, along with the surrounding parkland, as a tourist attraction. The National Trust own the surrounding parkland, which is also open to the public.
Stuxnet: The Computer Code Which Crippled Iran's Nuclear Capability
BY ED BARNES AP
In the 20th century, this would have been a job for James Bond.
... for some of my scientist friends ... is this possible? (It's a long read, so if you start out bored, it probably won't get any better.)
The mission: Infiltrate the highly advanced, securely guarded enemy headquarters where scientists in the clutches of an evil master are secretly building a weapon that can destroy the world. Then render that weapon harmless and escape undetected.
But in the 21st century, Bond doesn't get the call. Instead, the job is handled by a suave and very sophisticated secret computer worm, a jumble of code called Stuxnet, which in the last year has not only crippled Iran's nuclear program but has caused a major rethinking of computer security around the globe.
Intelligence agencies, computer security companies and the nuclear industry have been trying to analyze the worm since it was discovered in June by a Belarus-based company that was doing business in Iran. And what they've all found, says Sean McGurk, the Homeland Security Department's acting director of national cyber security and communications integration, is a “game changer.”
The construction of the worm was so advanced, it was “like the arrival of an F-35 into a World War I battlefield,” says Ralph Langner, the computer expert who was the first to sound the alarm about Stuxnet. Others have called it the first “weaponized” computer virus.
Simply put, Stuxnet is an incredibly advanced, undetectable computer worm that took years to construct and was designed to jump from computer to computer until it found the specific, protected control system that it aimed to destroy: Iran’s nuclear enrichment program.
The target was seemingly impenetrable; for security reasons, it lay several stories underground and was not connected to the World Wide Web. And that meant Stuxnet had to act as sort of a computer cruise missile: As it made its passage through a set of unconnected computers, it had to grow and adapt to security measures and other changes until it reached one that could bring it into the nuclear facility.
When it ultimately found its target, it would have to secretly manipulate it until it was so compromised it ceased normal functions.
And finally, after the job was done, the worm would have to destroy itself without leaving a trace.
That is what we are learning happened at Iran's nuclear facilities -- both at Natanz, which houses the centrifuge arrays used for processing uranium into nuclear fuel, and, to a lesser extent, at Bushehr, Iran's nuclear power plant.
At Natanz, for almost 17 months, Stuxnet quietly worked its way into the system and targeted a specific component -- the frequency converters made by the German equipment manufacturer Siemens that regulated the speed of the spinning centrifuges used to create nuclear fuel. The worm then took control of the speed at which the centrifuges spun, making them turn so fast in a quick burst that they would be damaged but not destroyed. And at the same time, the worm masked that change in speed from being discovered at the centrifuges' control panel.
At Bushehr, meanwhile, a second secret set of codes, which Langner called “digital warheads,” targeted the Russian-built power plant's massive steam turbine.
Here's how it worked, according to experts who have examined the worm:
--The nuclear facility in Iran runs an “air gap” security system, meaning it has no connections to the Web, making it secure from outside penetration. Stuxnet was designed and sent into the area around Iran's Natanz nuclear power plant -- just how may never be known -- to infect a number of computers on the assumption that someone working in the plant would take work home on a flash drive, acquire the worm and then bring it back to the plant.
--Once the worm was inside the plant, the next step was to get the computer system there to trust it and allow it into the system. That was accomplished because the worm contained a “digital certificate” stolen from JMicron, a large company in an industrial park in Taiwan. (When the worm was later discovered it quickly replaced the original digital certificate with another certificate, also stolen from another company, Realtek, a few doors down in the same industrial park in Taiwan.)
--Once allowed entry, the worm contained four “Zero Day” elements in its first target, the Windows 7 operating system that controlled the overall operation of the plant. Zero Day elements are rare and extremely valuable vulnerabilities in a computer system that can be exploited only once. Two of the vulnerabilities were known, but the other two had never been discovered. Experts say no hacker would waste Zero Days in that manner.
--After penetrating the Windows operating system, the code then targeted the siemens operating system that controlled the plant. Once that was in its grip it then took over the “frequency converters” that ran the centrifuges. To do that it used specifications from the manufacturers of the converters. One was Vacon, a Finnish Company, and the other Fararo Paya, an Iranian company. What surprises experts at this step is that the Iranian company was so secret that not even the IAEA knew about it.
--The worm also knew that the complex control system that ran the centrifuges was built by Siemens, the German manufacturer, and -- remarkably -- how that system worked as well and how to mask its activities from it.
--Masking itself from the plant's security and other systems, the worm then ordered the centrifuges to rotate extremely fast, and then to slow down precipitously. This damaged the converter, the centrifuges and the bearings, and it corrupted the uranium in the tubes. It also left Iranian nuclear engineers wondering what was wrong, as computer checks showed no malfunctions in the operating system.
Estimates are that this went on for more than a year, leaving the Iranian program in chaos. And as it did, the worm grew and adapted throughout the system. As new worms entered the system, they would meet and adapt and become increasingly sophisticated.
During this time the worms reported back to two mysterious servers that had to be run by intelligence agencies, one in Denmark and one in Malaysia. The servers monitored the worms as they infiltrated Natanz. Efforts to find those servers since then have yielded no results.
This went on until June of last year, when a Belarusan company working on the Iranian power plant in Beshehr discovered it in one of its machines. It quickly put out a notice on a Web network monitored by computer security experts around the world. Ordinarily these experts would immediately begin tracing the worm and dissecting it, looking for clues about its origin and other details.
But that didn’t happen, because within minutes all the alert sites came under attack and were inoperative for 24 hours.
“I had to use e-mail to send notices but I couldn’t reach everyone. Whoever made the worm had a full day to eliminate all traces of the worm that might lead us them,” Eric Byres, a computer security expert who has examined the Stuxnet. “No hacker could have done that.”
Experts, including inspectors from the International Atomic Energy Agency(IAEA,) say that, despite Iran's claims to the contrary, the worm was successful in its goal: causing confusion among Iran’s nuclear engineers and disabling their nuclear program.
Because of the secrecy surrounding the Iranian program, no one can be certain of the full extent of the damage. But sources inside Iran and elsewhere say that the Iranian centrifuge program has been operating far below its capacity and that the uranium enrichment program had “stagnated” during the time the worm penetrated the underground facility. Only 4,000 of the 9,000 centrifuges Iran was known to have were put into use. Some suspect that is because of the critical need to replace ones that were damaged.
And the limited number of those in use dwindled to an estimated 3,700 as problems engulfed their operation. IAEA inspectors say the sabotage better explains the slowness of the program, which they had earlier attributed to poor equipment manufacturing and management problems. As Iranians struggled with the setbacks, they began searching for signs of sabotage. From inside Iran there have been unconfirmed reports that the head of the plant was fired shortly after the worm wended its way into the system and began creating technical problems, and that some scientists who were suspected of espionage disappeared or were executed. And counter intelligence agents began monitoring all communications between scientists at the site, creating a climate of fear and paranoia.
Iran has adamantly stated that its nuclear program has not been hit by the bug. But in doing so it has backhandedly confirmed that its nuclear facilities were compromised. When Hamid Alipour, head of the nation’s Information Technology Company, announced in September that 30,000 Iranian computers had been hit by the worm but the nuclear facilities were safe, he added that among those hit were the personal computers of the scientists at the nuclear facilities. Experts say that Natanz and Bushehr could not have escaped the worm if it was in their engineers’ computers.
“We brought it into our lab to study it and even with precautions it spread everywhere at incredible speed,” Byres said.
“The worm was designed not to destroy the plants but to make them ineffective. By changing the rotation speeds, the bearings quickly wear out and the equipment has to be replaced and repaired. The speed changes also impact the quality of the uranium processed in the centrifuges creating technical problems that make the plant ineffective,” he explained.
In other words the worm was designed to allow the Iranian program to continue but never succeed, and never to know why.
One additional impact that can be attributed to the worm, according to David Albright of the Institute for Science and International Studies, is that “the lives of the scientists working in the facility have become a living hell because of counter-intelligence agents brought into the plant” to battle the breach. Ironically, even after its discovery, the worm has succeeded in slowing down Iran's reputed effort to build an atomic weapon. And Langer says that the efforts by the Iranians to cleanse Stuxnet from their system “will probably take another year to complete,” and during that time the plant will not be able to function anywhere normally.
But as the extent of the worm’s capabilities is being understood, its genius and complexity has created another perplexing question: Who did it?
Speculation on the worm’s origin initially focused on hackers or even companies trying to disrupt competitors. But as engineers tore apart the virus they learned not only the depth of the code, its complex targeting mechanism, (despite infecting more than 100,000 computers it has only done damage at Natanz,) the enormous amount of work that went into it—Microsoft estimated that it consumed 10,000 man days of labor-- and about what the worm knew, the clues narrowed the number of players that have the capabilities to create it to a handful.
security expert wrote.
Byres is more certain. “It is a military weapon,” he said.
And much of what the worm “knew” could only have come from a consortium of Western intelligence agencies, experts who have examined the code now believe.
Originally, all eyes turned toward Israel’s intelligence agencies. Engineers examining the worm found “clues” that hinted at Israel’s involvement. In one case they found the word “Myrtus” embedded in the code and argued that it was a reference to Esther, the biblical figure who saved the ancient Jewish state from the Persians. But computer experts say "Myrtus" is more likely a common reference to “My RTUS,” or remote terminal units.
Langer argues that no single Western intelligence agency had the skills to pull this off alone. The most likely answer, he says, is that a consortium of intelligence agencies worked together to build the cyber bomb. And he says the most likely confederates are the United States, because it has the technical skills to make the virus, Germany, because reverse-engineering Siemen’s product would have taken years without it, and Russia, because of its familiarity with both the Iranian nuclear plant and Siemen’s systems.
There is one clue that was left in the code that may tell us all we need to know.
Embedded in different section of the code is another common computer language reference, but this one is misspelled. Instead of saying “DEADFOOT,” a term stolen from pilots meaning a failed engine, this one reads “DEADFOO7.”
Yes, OO7 has returned -- as a computer worm.
Stuxnet. Shaken, not stirred