Program's photos on Flickr

Arctic Sea Ice Shrinks To New Low In Satellite Era by NASA Goddard Space Flight Center

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This visualization shows the extent of Arctic sea ice on Aug. 26, 2012, the day the sea ice dipped to its smallest extent ever recorded in more than three decades of satellite measurements, according to scientists from NASA and the National Snow and Ice Data Center. The data is from the U.S. Defense Meteorological Satellite Program’s Special Sensor Microwave/Imager. The line on the image shows the average minimum extent from the period covering 1979-2010, as measured by satellites. Every summer the Arctic ice cap melts down to what scientists call its “minimum” before colder weather builds the ice cover back up. The size of this minimum remains in a long-term decline. The extent on Aug. 26. 2012 broke the previous record set on Sept. 18, 2007. But the 2012 melt season could still continue for several weeks.

To read more go to: 1.usa.gov/PkgRuq

Image credit: Scientific Visualization Studio, NASA Goddard Space Flight Center

NASA and the National Snow and Ice Data Center (NSIDC) announced on Aug. 27, 2012, that the ice cap covering the Arctic Ocean is now smaller than ever recorded since consistent satellite measurements of the ice began more than three decades ago. Each year, the ice cap goes through a shrink-and-swell cycle, melting throughout the summer months before expanding through fall and winter. In the past decade in particular the minimum summertime extent of the ice cap has shown a consistent decline in size – a trend closely linked with the Arctic's warming climate. NASA and NSIDC scientists said the extent of Arctic sea ice on Aug. 26 surpassed the previous record minimum extent set in the summer of 2007. The ice cap will continue to melt and get smaller in the coming weeks before temperatures get colder and ice begins to refreeze as fall approaches.

NASA image use policy.

NASA Goddard Space Flight Center enables NASA’s mission through four scientific endeavors: Earth Science, Heliophysics, Solar System Exploration, and Astrophysics. Goddard plays a leading role in NASA’s accomplishments by contributing compelling scientific knowledge to advance the Agency’s mission.

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X-51 Hypersonic final flight by US Air Force

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The X-51A Waverider flew its fourth and final mission May 1 over the Point Mugu Naval Air Warfare Center Sea Range May 1, 2013,during which the test team achieved a record-setting 210 seconds of air-breathing hypersonic flight. Flight testers from Edwards Air Force Base, Cali., played a vital role in the program's success. (U.S. Air Force photo by Bobbi Zapka/Released)

Soon... by Geddy Davis

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We are less than one month away from 611's return to the high iron for Norfolk Southern's 2016 excursion season. With the steam program's uncertain fate, I would get out and see this streamlined beauty while you can.

In this black and white photo, N&W 611 accelerates past the position light at Bowler, Virginia with 'The Cavalier' after a severe thunderstorm. Even at 40 mph, the rain and dark storm clouds took away enough light to blur the nose of the famous locomotive.

1:72 Boeing MV-10H “Super Bronco” a.k.a. “Black Pony”; “IP 002 (s/n 18-2002)”, USAF 919th Special Operations Support Squadron, 919th Special Operations Wing; Duke Field (Eglin Air Force Auxiliary Field 3, Florida), 2020 (Whif/kitbashing) by Dizzyfugu

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+++ DISCLAIMER +++

Nothing you see here is real, even though the conversion or the presented background story might be based on historical facts. BEWARE!

Some background:

The OV-10 Bronco was initially conceived in the early 1960s through an informal collaboration between W. H. Beckett and Colonel K. P. Rice, U.S. Marine Corps, who met at Naval Air Weapons Station China Lake, California, and who also happened to live near each other. The original concept was for a rugged, simple, close air support aircraft integrated with forward ground operations. At the time, the U.S. Army was still experimenting with armed helicopters, and the U.S. Air Force was not interested in close air support.

The concept aircraft was to operate from expedient forward air bases using roads as runways. Speed was to be from very slow to medium subsonic, with much longer loiter times than a pure jet. Efficient turboprop engines would give better performance than piston engines. Weapons were to be mounted on the centerline to get efficient aiming. The inventors favored strafing weapons such as self-loading recoilless rifles, which could deliver aimed explosive shells with less recoil than cannons, and a lower per-round weight than rockets. The airframe was to be designed to avoid the back blast.

Beckett and Rice developed a basic platform meeting these requirements, then attempted to build a fiberglass prototype in a garage. The effort produced enthusiastic supporters and an informal pamphlet describing the concept. W. H. Beckett, who had retired from the Marine Corps, went to work at North American Aviation to sell the aircraft.
The aircraft's design supported effective operations from forward bases. The OV-10 had a central nacelle containing a crew of two in tandem and space for cargo, and twin booms containing twin turboprop engines. The visually distinctive feature of the aircraft is the combination of the twin booms, with the horizontal stabilizer that connected them at the fin tips. The OV-10 could perform short takeoffs and landings, including on aircraft carriers and large-deck amphibious assault ships without using catapults or arresting wires. Further, the OV-10 was designed to take off and land on unimproved sites. Repairs could be made with ordinary tools. No ground equipment was required to start the engines. And, if necessary, the engines would operate on high-octane automobile fuel with only a slight loss of power.

The aircraft had responsive handling and could fly for up to 5½ hours with external fuel tanks. The cockpit had extremely good visibility for both pilot and co-pilot, provided by a wrap-around "greenhouse" that was wider than the fuselage. North American Rockwell custom ejection seats were standard, with many successful ejections during service. With the second seat removed, the OV-10 could carry 3,200 pounds (1,500 kg) of cargo, five paratroopers, or two litter patients and an attendant. Empty weight was 6,969 pounds (3,161 kg). Normal operating fueled weight with two crew was 9,908 pounds (4,494 kg). Maximum takeoff weight was 14,446 pounds (6,553 kg).
The bottom of the fuselage bore sponsons or "stub wings" that improved flight performance by decreasing aerodynamic drag underneath the fuselage. Normally, four 7.62 mm (.308 in) M60C machine guns were carried on the sponsons, accessed through large forward-opening hatches. The sponsons also had four racks to carry bombs, pods, or fuel. The wings outboard of the engines contained two additional hardpoints, one per side. Racked armament in the Vietnam War was usually seven-shot 2.75 in (70 mm) rocket pods with white phosphorus marker rounds or high-explosive rockets, or 5" (127 mm) four-shot Zuni rocket pods. Bombs, ADSIDS air-delivered/para-dropped unattended seismic sensors, Mk-6 battlefield illumination flares, and other stores were also carried.
Operational experience showed some weaknesses in the OV-10's design. It was significantly underpowered, which contributed to crashes in Vietnam in sloping terrain because the pilots could not climb fast enough. While specifications stated that the aircraft could reach 26,000 feet (7,900 m), in Vietnam the aircraft could reach only 18,000 feet (5,500 m). Also, no OV-10 pilot survived ditching the aircraft.

The OV-10 served in the U.S. Air Force, U.S. Marine Corps, and U.S. Navy, as well as in the service of a number of other countries. In U.S. military service, the Bronco was operated until the early Nineties, and obsoleted USAF OV-10s were passed on to the Bureau of Alcohol, Tobacco, and Firearms for anti-drug operations. A number of OV-10As furthermore ended up in the hands of the California Department of Forestry (CDF) and were used for spotting fires and directing fire bombers onto hot spots.

This was not the end of the OV-10 in American military service, though: In 2012, the type gained new attention because of its unique qualities. A $20 million budget was allocated to activate an experimental USAF unit of two airworthy OV-10Gs, acquired from NASA and the State Department. These machines were retrofitted with military equipment and were, starting in May 2015, deployed overseas to support Operation “Inherent Resolve”, flying more than 120 combat sorties over 82 days over Iraq and Syria. Their concrete missions remained unclear, and it is speculated they provided close air support for Special Forces missions, esp. in confined urban environments where the Broncos’ loitering time and high agility at low speed and altitude made them highly effective and less vulnerable than helicopters.
Furthermore, these Broncos reputedly performed strikes with the experimental AGR-20A “Advanced Precision Kill Weapons System (APKWS)”, a Hydra 70-millimeter rocket with a laser-seeking head as guidance - developed for precision strikes against small urban targets with little collateral damage. The experiment ended satisfactorily, but the machines were retired again, and the small unit was dissolved.

However, the machines had shown their worth in asymmetric warfare, and the U.S. Air Force decided to invest in reactivating the OV-10 on a regular basis, despite the overhead cost of operating an additional aircraft type in relatively small numbers – but development and production of a similar new type would have caused much higher costs, with an uncertain time until an operational aircraft would be ready for service. Re-activating a proven design and updating an existing airframe appeared more efficient.
The result became the MV-10H, suitably christened “Super Bronco” but also known as “Black Pony”, after the program's internal name. This aircraft was derived from the official OV-10X proposal by Boeing from 2009 for the USAF's Light Attack/Armed Reconnaissance requirement. Initially, Boeing proposed to re-start OV-10 manufacture, but this was deemed uneconomical, due to the expected small production number of new serial aircraft, so the “Black Pony” program became a modernization project. In consequence, all airframes for the "new" MV-10Hs were recovered OV-10s of various types from the "boneyard" at Davis-Monthan Air Force Base in Arizona.

While the revamped aircraft would maintain much of its 1960s-vintage rugged external design, modernizations included a completely new, armored central fuselage with a highly modified cockpit section, ejection seats and a computerized glass cockpit. The “Black Pony” OV-10 had full dual controls, so that either crewmen could steer the aircraft while the other operated sensors and/or weapons. This feature would also improve survivability in case of incapacitation of a crew member as the result from a hit.
The cockpit armor protected the crew and many vital systems from 23mm shells and shrapnel (e. g. from MANPADS). The crew still sat in tandem under a common, generously glazed canopy with flat, bulletproof panels for reduced sun reflections, with the pilot in the front seat and an observer/WSO behind. The Bronco’s original cargo capacity and the rear door were retained, even though the extra armor and defensive measures like chaff/flare dispensers as well as an additional fuel cell in the central fuselage limited the capacity. However, it was still possible to carry and deploy personnel, e. g. small special ops teams of up to four when the aircraft flew in clean configuration.
Additional updates for the MV-10H included structural reinforcements for a higher AUW and higher g load maneuvers, similar to OV-10D+ standards. The landing gear was also reinforced, and the aircraft kept its ability to operate from short, improvised airstrips. A fixed refueling probe was added to improve range and loiter time.

Intelligence sensors and smart weapon capabilities included a FLIR sensor and a laser range finder/target designator, both mounted in a small turret on the aircraft’s nose. The MV-10H was also outfitted with a data link and the ability to carry an integrated targeting pod such as the Northrop Grumman LITENING or the Lockheed Martin Sniper Advanced Targeting Pod (ATP). Also included was the Remotely Operated Video Enhanced Receiver (ROVER) to provide live sensor data and video recordings to personnel on the ground.

To improve overall performance and to better cope with the higher empty weight of the modified aircraft as well as with operations under hot-and-high conditions, the engines were beefed up. The new General Electric CT7-9D turboprop engines improved the Bronco's performance considerably: top speed increased by 100 mph (160 km/h), the climb rate was tripled (a weak point of early OV-10s despite the type’s good STOL capability) and both take-off as well as landing run were almost halved. The new engines called for longer nacelles, and their circular diameter markedly differed from the former Garrett T76-G-420/421 turboprop engines. To better exploit the additional power and reduce the aircraft’s audio signature, reversible contraprops, each with eight fiberglass blades, were fitted. These allowed a reduced number of revolutions per minute, resulting in less noise from the blades and their tips, while the engine responsiveness was greatly improved. The CT7-9Ds’ exhausts were fitted with muzzlers/air mixers to further reduce the aircraft's noise and heat signature.
Another novel and striking feature was the addition of so-called “tip sails” to the wings: each wingtip was elongated with a small, cigar-shaped fairing, each carrying three staggered, small “feather blade” winglets. Reputedly, this installation contributed ~10% to the higher climb rate and improved lift/drag ratio by ~6%, improving range and loiter time, too.
Drawing from the Iraq experience as well as from the USMC’s NOGS test program with a converted OV-10D as a night/all-weather gunship/reconnaissance platform, the MV-10H received a heavier gun armament: the original four light machine guns that were only good for strafing unarmored targets were deleted and their space in the sponsons replaced by avionics. Instead, the aircraft was outfitted with a lightweight M197 three-barrel 20mm gatling gun in a chin turret. This could be fixed in a forward position at high speed or when carrying forward-firing ordnance under the stub wings, or it could be deployed to cover a wide field of fire under the aircraft when it was flying slower, being either slaved to the FLIR or to a helmet sighting auto targeting system.
The original seven hardpoints were retained (1x ventral, 2x under each sponson, and another pair under the outer wings), but the total ordnance load was slightly increased and an additional pair of launch rails for AIM-9 Sidewinders or other light AAMs under the wing tips were added – not only as a defensive measure, but also with an anti-helicopter role in mind; four more Sidewinders could be carried on twin launchers under the outer wings against aerial targets. Other guided weapons cleared for the MV-10H were the light laser-guided AGR-20A and AGM-119 Hellfire missiles, the Advanced Precision Kill Weapon System upgrade to the light Hydra 70 rockets, the new Laser Guided Zuni Rocket which had been cleared for service in 2010, TV-/IR-/laser-guided AGM-65 Maverick AGMs and AGM-122 Sidearm anti-radar missiles, plus a wide range of gun and missile pods, iron and cluster bombs, as well as ECM and flare/chaff pods, which were not only carried defensively, but also in order to disrupt enemy ground communication.

In this configuration, a contract for the conversion of twelve mothballed American Broncos to the new MV-10H standard was signed with Boeing in 2016, and the first MV-10H was handed over to the USAF in early 2018, with further deliveries lasting into early 2020. All machines were allocated to the newly founded 919th Special Operations Support Squadron at Duke Field (Florida). This unit was part of the 919th Special Operations Wing, an Air Reserve Component (ARC) of the United States Air Force. It was assigned to the Tenth Air Force of Air Force Reserve Command and an associate unit of the 1st Special Operations Wing, Air Force Special Operations Command (AFSOC). If mobilized the wing was gained by AFSOC (Air Force Special Operations Command) to support Special Tactics, the U.S. Air Force's special operations ground force. Similar in ability and employment to Marine Special Operations Command (MARSOC), U.S. Army Special Forces and U.S. Navy SEALs, Air Force Special Tactics personnel were typically the first to enter combat and often found themselves deep behind enemy lines in demanding, austere conditions, usually with little or no support.

The MV-10Hs are expected to provide support for these ground units in the form of all-weather reconnaissance and observation, close air support and also forward air control duties for supporting ground units. Precision ground strikes and protection from enemy helicopters and low-flying aircraft were other, secondary missions for the modernized Broncos, which are expected to serve well into the 2040s. Exports or conversions of foreign OV-10s to the Black Pony standard are not planned, though.

General characteristics:

Crew: 2

Length: 42 ft 2½ in (12,88 m) incl. pitot

Wingspan: 45 ft 10½ in(14 m) incl. tip sails

Height: 15 ft 2 in (4.62 m)

Wing area: 290.95 sq ft (27.03 m²)

Airfoil: NACA 64A315

Empty weight: 9,090 lb (4,127 kg)

Gross weight: 13,068 lb (5,931 kg)

Max. takeoff weight: 17,318 lb (7,862 kg)

Powerplant:

2× General Electric CT7-9D turboprop engines, 1,305 kW (1,750 hp) each,

driving 8-bladed Hamilton Standard 8 ft 6 in (2.59 m) diameter constant-speed,

fully feathering, reversible contra-rotating propellers with metal hub and composite blades

Performance:

Maximum speed: 390 mph (340 kn, 625 km/h)

Combat range: 198 nmi (228 mi, 367 km)

Ferry range: 1,200 nmi (1,400 mi, 2,200 km) with auxiliary fuel

Maximum loiter time: 5.5 h with auxiliary fuel

Service ceiling: 32.750 ft (10,000 m)

13,500 ft (4.210 m) on one engine

Rate of climb: 17.400 ft/min (48 m/s) at sea level

Take-off run: 480 ft (150 m)

740 ft (227 m) to 50 ft (15 m)

1,870 ft (570 m) to 50 ft (15 m) at MTOW

Landing run: 490 ft (150 m)

785 ft (240 m) at MTOW

1,015 ft (310 m) from 50 ft (15 m)

Armament:

1x M197 3-barreled 20 mm Gatling cannon in a chin turret with 750 rounds ammo capacity

7x hardpoints for a total load of 5.000 lb (2,270 kg)

2x wingtip launch rails for AIM-9 Sidewinder AAMs

The kit and its assembly:

This fictional Bronco update/conversion was simply spawned by the idea: could it be possible to replace the original cockpit section with one from an AH-1 Cobra, for a kind of gunship version?

The basis is the Academy OV-10D kit, mated with the cockpit section from a Fujimi AH-1S TOW Cobra (Revell re-boxing, though), chosen because of its “boxy” cockpit section with flat glass panels – I think that it conveys the idea of an armored cockpit section best. Combining these parts was not easy, though, even though the plan sound simple. Initially, the Bronco’s twin booms, wings and stabilizer were built separately, because this made PSR on these sections easier than trying the same on a completed airframe. One of the initial challenges: the different engines. I wanted something uprated, and a different look, and I had a pair of (excellent!) 1:144 resin engines from the Russian company Kompakt Zip for a Tu-95 bomber at hand, which come together with movable(!) eight-blade contraprops that were an almost perfect size match for the original three-blade props. Biggest problem: the Tu-95 nacelles have a perfectly circular diameter, while the OV-10’s booms are square and rectangular. Combining these parts and shapes was already a messy PST affair, but it worked out quite well – even though the result rather reminds of some Chinese upgrade measure (anyone know the Tu-4 copies with turboprops? This here looks similar!). But while not pretty, I think that the beafier look works well and adds to the idea of a “revived” aircraft. And you can hardly beat the menacing look of contraprops on anything...

The exotic, so-called “tip sails” on the wings, mounted on short booms, are a detail borrowed from the Shijiazhuang Y-5B-100, an updated Chinese variant/copy of the Antonov An-2 biplane transporter. The booms are simple pieces of sprue from the Bronco kit, the winglets were cut from 0.5mm styrene sheet.

For the cockpit donor, the AH-1’s front section was roughly built, including the engine section (which is a separate module, so that the basic kit can be sold with different engine sections), and then the helicopter hull was cut and trimmed down to match the original Bronco pod and to fit under the wing. This became more complicated than expected, because a) the AH-1 cockpit and the nose are considerably shorter than the OV-10s, b) the AH-1 fuselage is markedly taller than the Bronco’s and c) the engine section, which would end up in the area of the wing, features major recesses, making the surface very uneven – calling for massive PSR to even this out. PSR was also necessary to hide the openings for the Fujimi AH-1’s stub wings. Other issues: the front landing gear (and its well) had to be added, as well as the OV-10 wing stubs. Furthermore, the new cockpit pod’s rear section needed an aerodynamical end/fairing, but I found a leftover Academy OV-10 section from a build/kitbashing many moons ago. Perfect match!

All these challenges could be tackled, even though the AH-1 cockpit looks surprisingly stout and massive on the Bronco’s airframe - the result looks stockier than expected, but it works well for the "Gunship" theme. Lots of PSR went into the new central fuselage section, though, even before it was mated with the OV-10 wing and the rest of the model.

Once cockpit and wing were finally mated, the seams had to disappear under even more PSR and a spinal extension of the canopy had to be sculpted across the upper wing surface, which would meld with the pod’s tail in a (more or less) harmonious shape. Not an easy task, and the fairing was eventually sculpted with 2C putty, plus even more PSR… Looks quite homogenous, though.

After this massive body work, other hardware challenges appeared like small distractions. The landing gear was another major issue because the deeper AH-1 section lowered the ground clearance, also because of the chin turret. To counter this, I raised the OV-10’s main landing gear by ~2mm – not much, but it was enough to create a credible stance, together with the front landing gear transplant under the cockpit, which received an internal console to match the main landing gear’s length. Due to the chin turret and the shorter nose, the front wheel retracts backwards now. But this looks quite plausible, thanks to the additional space under the cockpit tub, which also made a belt feed for the gun’s ammunition supply believable.

To enhance the menacing look I gave the model a fixed refueling boom, made from 1mm steel wire and a receptor adapter sculpted with white glue. The latter stuff was also used add some antenna fairings around the hull. Some antennae, chaff dispensers and an IR decoy were taken from the Academy kit.

The ordnance came from various sources. The Sidewinders under the wing tips were taken from an Italeri F-16C/D kit, they look better than the missiles from the Academy Bronco kit. Their launch rails came from an Italeri Bae Hawk 200. The quadruple Hellfire launchers on the underwing hardpoints were left over from an Italeri AH-1W, and they are a perfect load for this aircraft and its role. The LAU-10 and -19 missile pods on the stub wings were taken from the OV-10 kit.

Painting and markings:

Finding a suitable and somewhat interesting – but still plausible – paint scheme was not easy. Taking the A-10 as benchmark, an overall light grey livery (with focus on low contrast against the sky as protection against ground fire) would have been a likely choice – and in fact the last operational American OV-10s were painted in this fashion. But in order to provide a different look I used the contemporary USAF V-22Bs and Special Operations MC-130s as benchmark, which typically carry a darker paint scheme consisting of FS 36118 (suitably “Gunship Gray” :D) from above, FS 36375 underneath, with a low, wavy waterline, plus low-viz markings. Not spectacular, but plausible – and very similar to the late r/w Colombian OV-10s.

The cockpit tub became Dark Gull Grey (FS 36231, Humbrol 140) and the landing gear white (Revell 301).

The model received an overall black ink washing and some post-panel-shading, to liven up the dull all-grey livery. The decals were gathered from various sources, and I settled for black USAF low-viz markings. The “stars and bars” come from a late USAF F-4, the “IP” tail code was tailored from F-16 markings and the shark mouth was taken from an Academy AH-64. Most stencils came from another Academy OV-10 sheet and some other sources.

Decals were also used to create the trim on the propeller blades and markings on the ordnance.

Finally, the model was sealed with a coat of matt acrylic varnish (Italeri) and some exhaust soot stains were added with graphite along the tail boom flanks.

A successful transplantation – but is this still a modified Bronco or already a kitbashing? The result looks quite plausible and menacing, even though the TOW Cobra front section appears relatively massive. But thanks to the bigger engines and extended wing tips the proportions still work. The large low-pressure tires look a bit goofy under the aircraft, but they are original. The grey livery works IMHO well, too – a more colorful or garish scheme would certainly have distracted from the modified technical basis.

Trash Trawl in the Chesapeake Bay by Chesapeake Bay Program

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A manta trawl skims the surface of the Chesapeake Bay in Maryland on Sept. 4, 2015. Julie Lawson of Trash Free Maryland and Stiv Wilson of The Story of Stuff Project invited advocates, educators, journalists, officials and others onboard for 13 days of sampling for microplastic, which animals can accidentally consume and which can release chemical pollutants. (Photo by Will Parson/Chesapeake Bay Program)

USAGE REQUEST INFORMATION

The Chesapeake Bay Program's photographic archive is available for media and non-commercial use at no charge. To request permission, send an email briefly describing the proposed use to requests@chesapeakebay.net. Please do not attach jpegs. Instead, reference the corresponding Flickr URL of the image.

A photo credit mentioning the Chesapeake Bay Program is mandatory. The photograph may not be manipulated in any way or used in any way that suggests approval or endorsement of the Chesapeake Bay Program. Requestors should also respect the publicity rights of individuals photographed, and seek their consent if necessary.

Florence Shelly Preserve in Susquehanna County, Pennsylvania by Chesapeake Bay Program

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Florence Shelly Preserve in Susquehanna County, Pa., on Aug. 2, 2016. The 357-acre preserve is owned by the Nature Conservancy and features forest, fields, a stream, and glacial pond surrounded by a floating bog. (Photo by Will Parson/Chesapeake Bay Program)

USAGE REQUEST INFORMATION

The Chesapeake Bay Program's photographic archive is available for media and non-commercial use at no charge. To request permission, send an email briefly describing the proposed use to requests@chesapeakebay.net. Please do not attach jpegs. Instead, reference the corresponding Flickr URL of the image.

A photo credit mentioning the Chesapeake Bay Program is mandatory. The photograph may not be manipulated in any way or used in any way that suggests approval or endorsement of the Chesapeake Bay Program. Requestors should also respect the publicity rights of individuals photographed, and seek their consent if necessary.

Messerschmitt Me 163B-1a Komet by Skip Plitt

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This photo may not be used in any form without permission from the photographer. None of my images are in the Creative Commons. If you wish to use one of my images please contact me at: skipplittphotography@gmail.com

One of the most remarkable of the Wunderwaffen (wonder weapons) produced by the Nazi Germany during World War II, the Messerschmitt Me 163 Komet holds the distinction of being the first and only tailless rocket-powered interceptor to see operational service. Like the other advanced weapons fielded by Germany during the final year of World War II, the Me 163 had little actual effect on the outcome of the war. Considering the conditions under which it was developed and deployed, however, the Me 163 can be rightly considered a significant technological accomplishment.

The concept for the Komet originated during the late thirties, when rocket propulsion for aircraft became increasingly attractive to a number of air planners in Nazi Germany. Although rockets potentially offered astounding performance advantages for an interceptor, their high fuel consumption posed seemingly insurmountable design difficulties. In spite of this, the Reichsluftfahrtministerium or RLM (Reich Air Ministry) supported the work of rocket engine designer Hellmuth Walter, issuing a contract in 1936 for the development of an 882 lb. thrust motor designated the R I-203. The engine was to be fueled by a mixture of T-Stoff (80 percent hydrogen peroxide with oxyquinoline or phosphate as a stabilizer and 20 percent water) and Z-Stoff (an aqueous solution of calcium permanganate) and intended to power the Heinkel He 176 aircraft then under development. Because the He 176, which had been designed solely as a high-speed aircraft with no military potential, the RLM ordered the Deutsches Forschungsinsitut für Segelflug (German Research Institute for Gliding Flight or DFS) to produce a second prototype of the DFS 39, a tailless aircraft designed by Dr. Alexander Lippisch. It was also to be a rocket-powered design under a top-secret program designated Project X. DFS was to build the aircraft's wings while Heinkel, which was already working on the He 176, was to manufacture the rest of the airframe. It soon became apparent to Lippisch, however, that the DFS 39's wingtip-mounted rudders would likely cause unacceptable flutter and that a central fin and rudder would offer better control. It was replaced by a new design, designated the DFS 194, with a single large vertical stabilizer mounted on the fuselage. Like the DFS 39, it was initially intended only to be a conventionally powered flying test bed for later rocket-powered designs.

Difficulties arising from the division of work between DFS and Heinkel and the secrecy surrounding the project led Lippisch to request that he be allowed to leave DFS and join Messerschmitt AG. The RLM granted his request on January 2, 1939, and shortly after Lippisch, his design team, and the partially completed DFS 194 arrived at the Messerschmitt works in Augsburg, it was decided to adopt rocket power for the aircraft. The airframe was completed at the Messerschmitt works in Augsburg and shipped to Pennemünde West early in 1940 for installation of a Walter R I-203. Flight-testing revealed that despite the unreliability its motor, the aircraft had excellent performance characteristics, reaching a speed of 342 mph in level flight during one test.

The move to Messerschmitt brought a change in the program's designation to Me 163. The success of the DFS 194 spurred development of the first prototype Me 163, designated the Me 163 V1, which was completed during early 1941. Flight testing commenced in the spring of 1941, comprising a series of unpowered flights before the Me 163 V1 was shipped to Peenemünde West for installation of a 1,653 lb. thrust Walter RII-203 rocket motor and its first powered flights. Despite a series of accidents and explosions involving the unreliable motor, on October 2, 1941, the Me 163 V1 set a new world speed record of 1,004.5 kph (623.8 mph). Impressed by the aircraft's performance, the RLM instructed Lippisch was to design an improved version of the Me 163 around a more powerful rocket motor under development by Walter. The new design, designated Me 163 B, was to be an operational interceptor and represented an almost complete redesign of the aircraft. Its landing gear remained similar to the earlier design, employing a wheeled trolley that was jettisoned after takeoff and an extendable skid for landing. Additional prototypes based on the Me 163 V1 configuration were designated Me 163 A.

The first Me 163 B prototype, the Me 163 V3, was completed in April 1942, but it was not until early fall that the first Walter 109-509A motors were ready for installation. The new motor used a more volatile fuel mixture of T-Stoff (80 percent hydrogen peroxide and 20 percent water) and C-Stoff (hydrazine hydrate, methyl alcohol, and water), which provided a maximum thrust of 1,500 kg (3,300 lb.). Unlike the earlier cold principle motor which directed all of the oxygen and water vapor produced by the decomposition of the hydrogen peroxide out of the engine's nozzle, the new motor employed a hot system in which the oxygen was ignited for additional thrust and better fuel efficiency. Flight testing of the first series of Me 163 B-0 preproduction aircraft proceeded through 1942 and demonstrated the dangers of the Me 163's unproven propulsion system. As fuel passed through the Walter motor's pumps, areas of vacuum sometimes formed in the liquid. This cavitation often caused a catastrophic explosion when the motor was started. Once in the air, the aircraft's climb rate proved remarkable, but compressibility problems limited its safe speed in a dive to below Mach 0.82. The Komet's landing gear also proved troublesome, with numerous pilots suffering back injuries as a result of the skid failing to extend properly or failing upon touchdown. Even when the skid operated properly, landings were always without power and at high speed, requiring the utmost care on the part of the pilot to prevent the aircraft from overturning on soft ground. Such mishaps often led to an explosion or the pilot being severely burned by leaking fuel.

Despite the problems encountered during testing, plans proceeded during 1943 to equip the first operational units with the operational version of the Komet, designated the Me 163 B-1a. Production began at dispersed facilities by the Klemm concern, but was later transferred to Junkers as the result of quality control problems. An operational training unit, Erprobungskommando 16 or EK 16 was formed during July 1943 at Pennemünde West, but moved to Bad Zwischenahn before the first group of pilot trainees arrived as the result of allied bombing of Pennemünde. The unit finally received its first group of 30 pilot trainees in the fall of 1943. By May 1944, organization of Jagdgeschwader 400 or JG 400, the first operational Me 163 wing, began in earnest with the formation of the unit's first group (I./JG 400) under the command of Hauptmann Wolfgang Späte. Späte planned to deploy Me 163s from a string of bases, each close enough that the short range of the Me 163 overlapped. The plan was never realized, owing in part to the special facilities needed for the aircraft. Instead, I./JG 400 was to provide protection for the synthetic oil refineries at Leuna, some 90 km (55 miles) from its base at Brandis. Two additional Me 163 groups, II. And III./JG 400 were formed before the end of the war, but saw limited combat.

The unit made its first interception of Allied bombers on August 16, 1944 without success. Early combat experiences demonstrated a number of problems that prevented the Me 163 from ever becoming an effective weapon. Although the aircraft's two MK 108 30mm cannons were capable of downing a four-engine bomber with only three or four hits, the Komet's high speed, coupled with the cannons' slow rate of fire and short range made effective gunnery nearly impossible against the slow moving bombers. As a result, Me 163 pilots recorded a total of only nine kills. Although capable of reaching its service ceiling of 12,100 m (39,690 ft) in just under three-and-a-half minutes, the Me 163 carried only enough fuel for eight minutes of powered flight. After one or two firing passes, the pilot had to glide back to base with no means of escaping Allied escort fighters. In response to pilots' combat reports, alternative weapons, including vertically firing 50mm cannons triggered by a photocell as the Me 163 passed through a bomber's shadow were tested but not produced in quantity. An improved variant of the aircraft with a greater endurance and a tricycle landing gear, designated the Me 163 C, was also produced in small numbers before the war's end, but was not flown operationally.

The operational history of the National Air and Space Museum's Me 163 B-1a, Werk-Nummer (serial number) 191301, remains obscure. One of five Me 163s brought to the United States after the war, it arrived at Freeman Field, Indiana, during the summer of 1945. There it received the foreign equipment code FE-500. On April 12, 1946, it was flown aboard a cargo aircraft to the U.S. Army Air Forces facility at Muroc dry lake in California for flight testing. Testing began there on May 3, 1946 in the presence of Dr. Alexander Lippisch and involved towing the unfueled Komet behind a B-29 to an altitude of 9,000 to 10,500 m (30,000 to 35,000 ft) before it was released for a glide back to earth under the control of test pilot Major Gus Lundquist. Powered tests were planned, but not carried out after delamination of the aircraft's wooden wings was discovered. It was then stored at Norton AFB, California until 1954, when it was transferred to the Smithsonian Institution. The aircraft remained on display in an unrestored condition at the museum's Paul E. Garber Restoration and Storage Facility in Suitland, Maryland, until 1996, when it was lent to the Mighty Eighth Air Force Heritage Museum in Savannah, Georgia. It is currently displayed at the Museum's Steven F. Udvar-Hazy Center in Chantilly, VA.

airandspace.si.edu/collection-objects/messerschmitt-me-16...

F-35A Completes First Trans-Atlantic Crossing by Lockheed Martin

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F-35A aircraft AL-1 and an Italian Air Force KC-767 tanker come in for a landing at Naval Air Station Patuxent River, Maryland to complete the F-35 program’s first trans-Atlantic flight on Feb. 5, 2016. Learn more: bit.ly/1S Ecue0

Florence Shelly Preserve in Susquehanna County, Pennsylvania by Chesapeake Bay Program

Florence Shelly Preserve in Susquehanna County, Pa., on Aug. 2, 2016. The 357-acre preserve is owned by the Nature Conservancy and features forest, fields, a stream, and glacial pond surrounded by a floating bog. (Photo by Will Parson/Chesapeake Bay Program)

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Ares I-X Rocket Takes Off (NASA, 10/28/09) by NASA's Marshall Space Flight Center

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With more than 23 times the power output of the Hoover Dam, the Constellation Program's Ares I-X test rocket zooms off Launch Complex 39B at NASA's Kennedy Space Center in Florida. The rocket produces 2.96 million pounds of thrust at liftoff and reaches a speed of 100 mph in eight seconds. Liftoff of the 6-minute flight test was at 11:30 a.m. EDT Oct. 28. This was the first launch from Kennedy's pads of a vehicle other than the space shuttle since the Apollo Program's Saturn rockets were retired. The parts used to make the Ares I-X booster flew on 30 different shuttle missions ranging from STS-29 in 1989 to STS-106 in 2000. The data returned from more than 700 sensors throughout the rocket will be used to refine the design of future launch vehicles and bring NASA one step closer to reaching its exploration goals.

Image credit: Scott Andrews, Canon

Original image:

mediaarchive.ksc.nasa.gov/detail.cfm?mediaid=43940

More about Ares I-X: www.nasa.gov/aresIX

p.s. You can see all of the Ares photos in the Ares Group in Flickr at: www.flickr.com/groups/ares/ We'd love to have you as a member!

Ares I-X Rocket: Power, Power, Power (NASA, 10/28/09) by NASA's Marshall Space Flight Center

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With more than 23 times the power output of the Hoover Dam, the Constellation Program's Ares I-X test rocket zooms off Launch Complex 39B at NASA's Kennedy Space Center in Florida. The rocket produces 2.96 million pounds of thrust at liftoff and reaches a speed of 100 mph in eight seconds. Liftoff of the 6-minute flight test was at 11:30 a.m. EDT Oct. 28. This was the first launch from Kennedy's pads of a vehicle other than the space shuttle since the Apollo Program's Saturn rockets were retired. The parts used to make the Ares I-X booster flew on 30 different shuttle missions ranging from STS-29 in 1989 to STS-106 in 2000. The data returned from more than 700 sensors throughout the rocket will be used to refine the design of future launch vehicles and bring NASA one step closer to reaching its exploration goals.

Image credit: NASA/Kim Shiflett

Original image:

mediaarchive.ksc.nasa.gov/detail.cfm?mediaid=43944

More about Ares I-X: www.nasa.gov/aresIX

p.s. You can see all of the Ares photos in the Ares Group in Flickr at: www.flickr.com/groups/ares/ We'd love to have you as a member!

141205-N-GO855-110 by U.S. Pacific Fleet

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PACIFIC OCEAN (Dec. 5, 2014) NASA’s Orion Crew Module descends to the Pacific Ocean under its three main parachutes as part of the Orion Program’s first exploration flight test. USS Anchorage (LPD 23) is supporting the first exploration test flight for the NASA Orion Program. EFT-1 is the fifth at sea testing of the Orion Crew Module using a Navy well deck recovery method. (U.S. Navy Photo by Mass Communication Specialist 1st Class Charles White/Released)

F-35 Netherlands Arrival by Lockheed Martin

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Two F-35s completed the program's first East-bound trans-Atlantic crossing on May 23, 2016. The jets, the first two for the Netherlands, known as AN-1 and AN-2, departed NAS Patuxent River, Maryland, and were greeted by an eager crowd at Leeuwarden Air Base in the Netherlands. Photo credit: Frank Crebas. Learn more: bit.ly/27QRvdp

Lockheed Martin F-35B Lightning II fighter jets on board HMS Queen Elizabeth by Robert Sullivan

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BF-4 Flt 508 Mr. Peter Wilson and BF-5 Flt 370 Sqn Ldr Andy Adgell fly from HMS Queen Elizabeth on 27 Sep 2018

From Wikipedia, the free encyclopedia

The Lockheed Martin F-35 Lightning II is a family of single-seat, single-engine, all-weather, stealth, fifth-generation, multirole combat aircraft, designed for ground-attack and air-superiority missions. It is built by Lockheed Martin and many subcontractors, including Northrop Grumman, Pratt & Whitney, and BAE Systems.

The F-35 has three main models: the conventional takeoff and landing F-35A (CTOL), the short take-off and vertical-landing F-35B (STOVL), and the catapult-assisted take-off but arrested recovery, carrier-based F-35C (CATOBAR). The F-35 descends from the Lockheed Martin X-35, the design that was awarded the Joint Strike Fighter (JSF) program over the competing Boeing X-32. The official Lightning II name has proven deeply unpopular and USAF pilots have nicknamed it Panther, instead.

The United States principally funds F-35 development, with additional funding from other NATO members and close U.S. allies, including the United Kingdom, Italy, Australia, Canada, Norway, Denmark, the Netherlands, and formerly Turkey. These funders generally receive subcontracts to manufacture components for the aircraft; for example, Turkey was the sole supplier of several F-35 parts until its removal from the program in July 2019. Several other countries have ordered, or are considering ordering, the aircraft.

As the largest and most expensive military program ever, the F-35 became the subject of much scrutiny and criticism in the U.S. and in other countries. In 2013 and 2014, critics argued that the plane was "plagued with design flaws", with many blaming the procurement process in which Lockheed was allowed "to design, test, and produce the F-35 all at the same time," instead of identifying and fixing "defects before firing up its production line". By 2014, the program was "$163 billion over budget [and] seven years behind schedule". Critics also contend that the program's high sunk costs and political momentum make it "too big to kill".

The F-35 first flew on 15 December 2006. In July 2015, the United States Marines declared its first squadron of F-35B fighters ready for deployment. However, the DOD-based durability testing indicated the service life of early-production F-35B aircraft is well under the expected 8,000 flight hours, and may be as low as 2,100 flight hours. Lot 9 and later aircraft include design changes but service life testing has yet to occur. The U.S. Air Force declared its first squadron of F-35As ready for deployment in August 2016. The U.S. Navy declared its first F-35Cs ready in February 2019. In 2018, the F-35 made its combat debut with the Israeli Air Force.

The U.S. stated plan is to buy 2,663 F-35s, which will provide the bulk of the crewed tactical airpower of the U.S. Air Force, Navy, and Marine Corps in coming decades. Deliveries of the F-35 for the U.S. military are scheduled until 2037 with a projected service life up to 2070.

Development

F-35 development started in 1992 with the origins of the Joint Strike Fighter (JSF) program and was to culminate in full production by 2018. The X-35 first flew on 24 October 2000 and the F-35A on 15 December 2006.

The F-35 was developed to replace most US fighter jets with the variants of a single design that would be common to all branches of the military. It was developed in co-operation with a number of foreign partners, and, unlike the F-22 Raptor, intended to be available for export. Three variants were designed: the F-35A (CTOL), the F-35B (STOVL), and the F-35C (CATOBAR). Despite being intended to share most of their parts to reduce costs and improve maintenance logistics, by 2017, the effective commonality was only 20%. The program received considerable criticism for cost overruns during development and for the total projected cost of the program over the lifetime of the jets.

By 2017, the program was expected to cost $406.5 billion over its lifetime (i.e. until 2070) for acquisition of the jets, and an additional $1.1 trillion for operations and maintenance. A number of design deficiencies were alleged, such as: carrying a small internal payload; performance inferior to the aircraft being replaced, particularly the F-16; lack of safety in relying on a single engine; and flaws such as the vulnerability of the fuel tank to fire and the propensity for transonic roll-off (wing drop). The possible obsolescence of stealth technology was also criticized.

Design

Overview

Although several experimental designs have been developed since the 1960s, such as the unsuccessful Rockwell XFV-12, the F-35B is to be the first operational supersonic STOVL stealth fighter. The single-engine F-35 resembles the larger twin-engined Lockheed Martin F-22 Raptor, drawing design elements from it. The exhaust duct design was inspired by the General Dynamics Model 200, proposed for a 1972 supersonic VTOL fighter requirement for the Sea Control Ship.

Lockheed Martin has suggested that the F-35 could replace the USAF's F-15C/D fighters in the air-superiority role and the F-15E Strike Eagle in the ground-attack role. It has also stated the F-35 is intended to have close- and long-range air-to-air capability second only to that of the F-22 Raptor, and that the F-35 has an advantage over the F-22 in basing flexibility and possesses "advanced sensors and information fusion".

Testifying before the House Appropriations Committee on 25 March 2009, acquisition deputy to the assistant secretary of the Air Force, Lt. Gen. Mark D. "Shack" Shackelford, stated that the F-35 is designed to be America's "premier surface-to-air missile killer, and is uniquely equipped for this mission with cutting-edge processing power, synthetic aperture radar integration techniques, and advanced target recognition".

Improvements

Ostensible improvements over past-generation fighter aircraft include:

Durable, low-maintenance stealth technology, using structural fiber mat instead of the high-maintenance coatings of legacy stealth platforms

Integrated avionics and sensor fusion that combine information from off- and on-board sensors to increase the pilot's situational awareness and improve target identification and weapon delivery, and to relay information quickly to other command and control (C2) nodes

High-speed data networking including IEEE 1394b and Fibre Channel (Fibre Channel is also used on Boeing's Super Hornet.

The Autonomic Logistics Global Sustainment, Autonomic Logistics Information System (ALIS), and Computerized maintenance management system to help ensure the aircraft can remain operational with minimal maintenance manpower The Pentagon has moved to open up the competitive bidding by other companies. This was after Lockheed Martin stated that instead of costing 20% less than the F-16 per flight hour, the F-35 would actually cost 12% more. Though the ALGS is intended to reduce maintenance costs, the company disagrees with including the cost of this system in the aircraft ownership calculations. The USMC has implemented a workaround for a cyber vulnerability in the system. The ALIS system currently requires a shipping-container load of servers to run, but Lockheed is working on a more portable version to support the Marines' expeditionary operations.

Electro-hydrostatic actuators run by a power-by-wire flight-control system

A modern and updated flight simulator, which may be used for a greater fraction of pilot training to reduce the costly flight hours of the actual aircraft

Lightweight, powerful lithium-ion batteries to provide power to run the control surfaces in an emergency

Structural composites in the F-35 are 35% of the airframe weight (up from 25% in the F-22). The majority of these are bismaleimide and composite epoxy materials. The F-35 will be the first mass-produced aircraft to include structural nanocomposites, namely carbon nanotube-reinforced epoxy. Experience of the F-22's problems with corrosion led to the F-35 using a gap filler that causes less galvanic corrosion to the airframe's skin, designed with fewer gaps requiring filler and implementing better drainage. The relatively short 35-foot wingspan of the A and B variants is set by the F-35B's requirement to fit inside the Navy's current amphibious assault ship parking area and elevators; the F-35C's longer wing is considered to be more fuel efficient.

Costs

A U.S. Navy study found that the F-35 will cost 30 to 40% more to maintain than current jet fighters, not accounting for inflation over the F-35's operational lifetime. A Pentagon study concluded a $1 trillion maintenance cost for the entire fleet over its lifespan, not accounting for inflation. The F-35 program office found that as of January 2014, costs for the F-35 fleet over a 53-year lifecycle was $857 billion. Costs for the fighter have been dropping and accounted for the 22 percent life cycle drop since 2010. Lockheed stated that by 2019, pricing for the fifth-generation aircraft will be less than fourth-generation fighters. An F-35A in 2019 is expected to cost $85 million per unit complete with engines and full mission systems, inflation adjusted from $75 million in December 2013.

Croce di Casale (AP): una vista sul Monte Vettore (2016) by Orarossa

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Ph.: Orarossa - Ascoli Piceno, Italy

Make: NIKON

Model: D810

Data Time: 10/01/2016 - 14:09

Shutter Speed: 1/250 sec

Exposure Program: S

F-Stop: f/16

ISO Speed Ratings: 80

Focal Length: 85 mm

Flash: OFF

Light at the end of the tunnel by Gavin Woolnough

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A grafitti and rubble strewn corridor in an abandoned hotel.

Two Xenia hotels were built within the walls of Acronafplia, overlooking the Palamidi in Nafplio Greece. One of these hotels is still operating, the other is abandoned and dilapidated. With an easy climb of a fence, you can wander round what's left of the hotel.

The Xenia (Ξενία) was a nationwide hotel construction program initiated by the Hellenic Tourism Organisation (Ελληνικός Οργανισμός Τουρισμού, E.O.T.) to improve the country's tourism infrastructure in the 1960s and 1970s. It constitutes one of the largest infrastructure projects in modern Greek history.

Until the 1950s, Greece featured only a few major hotels, mostly situated in the country's great cities, and a few smaller ones in islands like Corfu or Rhodes. In 1950, EOT began a program to construct and operate hotels across the country, especially in the less-travelled areas. Locations were specially selected and the architecture combined local knowledge with standardized elements. The buildings were embedded in the landscape, but at the same time followed a modernist style.

The first manager of the project was the architect Charalambos Sfaellos (from 1950 to 1958) and from 1957 the buildings were designed by a team under Aris Konstantinidis. Many private hotel projects in Greece were inspired by the Xenia hotels and the program had reached its aims in the early 1970s. In 1974 the construction program was complete. The Xenia program itself was officially terminated in 1983, and the hotels were given over to private operators or eventually sold off.

Some hotels are still operated privately under the Xenia name. Many of the program's hotels have been designated as historic monuments for their architectural value. Three have been demolished, while other surviving examples have been substantially altered or are in a dilapidated state.

Lockheed Martin F-35B "Lightning II" fighter jet. by Robert Sullivan

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Two Lockheed Martin F-35B "Lightning II" fighter jets have successfully landed on board HMS Queen Elizabeth for the first time, laying the foundations for the next 50 years of fixed wing aviation in support of the UK’s Carrier Strike Capability.

Royal Navy Commander, Nathan Gray, 41, made history by being the first to land on board HMS Queen Elizabeth, carefully maneuvering his stealth jet onto the thermal coated deck. He was followed by Squadron Leader Andy Edgell, RAF, both of whom are test pilots, operating with the Integrated Test Force (ITF) based at Naval Air Station Patuxent River, Maryland.

Shortly afterwards, once a deck inspection has been conducted and the all-clear given, Cmdr Gray became the first pilot to take off using the ship’s ski-ramp.