Modellbau (modelbuilding, modeling, model making)
View allAll Photos Tagged Modellbau
Modell gebaut von / model built by Ernst Eyle. More:
www.wolfgang-kynast.de/foto/dampf/index.html
or my Album www.flickr.com/photos/wolfgang-kynast/sets/72157645393990816
All machines are fully functional!
Modell gebaut von / model built by Ernst Eyle. More:
www.wolfgang-kynast.de/foto/dampf/index.html
or my Album www.flickr.com/photos/wolfgang-kynast/sets/72157645393990816
All machines are fully functional!
Modell gebaut von / model built by Ernst Eyle. More:
www.wolfgang-kynast.de/foto/dampf/index.html
or my Album www.flickr.com/photos/wolfgang-kynast/sets/72157645393990816
Model kit: Revell 04220 1/100th scale, re-release from 2007
Decals: SAS kit decals with Authentic Airliners window decals
Notes: Nose lowered a few degrees to improve its incorrect shape, scratch built new wing strakes. The SAS decals are too dark and the typeface used for the Viking name is incorrect, but decent enough for a quick-build.
Built by Hans Jakobsson 2020
Impressions of a visit at the " INTERMODELLBAU " , Exhibition for model-making and model sport
in Dortmund, Germany
Modell gebaut von / model built by Ernst Eyle. More:
www.wolfgang-kynast.de/foto/dampf/index.html
or my Album www.flickr.com/photos/wolfgang-kynast/sets/72157645393990816
Modell gebaut von / model built by Ernst Eyle. More:
www.wolfgang-kynast.de/foto/dampf/index.html
or my Album www.flickr.com/photos/wolfgang-kynast/sets/72157645393990816
All models are fully functional!
+++ 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.
+++ 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 Cessna Model 336 and 337 “Skymaster” were American twin-engine civil utility aircraft built in a unique push-pull configuration. Their engines were mounted in the nose and rear of its pod-style fuselage. Twin booms extended aft of the wings to the vertical stabilizers, with the rear engine between them. The horizontal stabilizer was aft of the pusher propeller, mounted between and connecting the two booms.
The first Skymaster, Model 336, had fixed landing gear and initially flew on February 28, 1961. It went into production in May 1963 with 195 being produced through mid-1964. In February 1965, Cessna introduced the larger Model 337 Super Skymaster with more powerful engines, retractable landing gear, and a dorsal air scoop for the rear engine (the "Super" prefix was subsequently dropped from the name). In 1966, the turbocharged T337 was introduced, and in 1973, the pressurized P337G entered production.
The type was very prolific and Cessna built 2.993 Skymasters of all variants, including 513 military O-2 (nicknamed "Oscar Deuce") versions from 1967 onwards. The latter featured underwing ordnance hard points to hold unguided rockets, gun pods or flares, and served in the forward air control (FAC) role and psychological operations (PSYOPS) by the US military between 1967 and 2010. Production in America ended in 1982, but was continued by Reims in France, with the FTB337 STOL and the military FTMA “Milirole”.
Both civil and military Cessna 336/337 version had long service careers, and some were considerably modified for new operators and uses. Among the most drastic conversions was the Spectrum SA-550, built by Spectrum Aircraft Corporation of Van Nuys, California, in the mid-1980s: Spectrum took the 336/337 airframe and removed the front engine, lengthened the nose to maintain the center of gravity, and replaced the rear piston engine with a pusher turboprop which offered more power than the combined pair of original petrol engines. The Spectrum SA-550 conversion also came together with an optional modernization package that prolonged the airframes’ service life, so that modified machines could well serve on for 20 years or more.
This drastic conversion was executed for both military and civil operators. The best-known military SA-550s were six former USAF O-2A airframes, which had been transferred to the U.S. Navy in 1983 for use as range controllers with VA-122 at NAS Lemoore, California. These aircraft were operationally nicknamed “Pelican”, due to the characteristic new nose shape, and the name unofficially caught on.
However, the SA-550 package was only adopted sporadically by private operators, but it became quite popular among several major police and fire departments. Typical duties for these machines included border/drug patrol, surveillance/observation duties (e.g. traffic, forest fire) and special tasks, including drug interdiction as well for SAR missions and undercover operations like narcotics and serialized criminal investigations. Some SA-550s were accordingly modified and individually outfitted with suitable sensors, including IR/low light cameras, searchlights, and internal auxiliary tanks. None were armed, even though some aircraft featured underwing hardpoints for external extra tanks, flare dispensers for nocturnal operations or smoke charge dispensers for ground target marking to guide water bombers to hidden forest fires.
The type’s versatility, low noise level, high travel speed and good loitering time in the operational area at low speed proved to be vital assets for these public service operators and justified its relatively high maintenance costs. A handful of the modernized Spectrum SA-550 machines were still in active service after the Millennium, primarily in the USA.
General characteristics:
Crew: 1 + 3 passengers (up to 5 passengers possible in special seat configuration)
Length: 32 ft 6½ in (9.94 m)
Wingspan: 38 ft ¾ in (11.62 m)
Height: 9 ft 2 in (2.79 m)
Wing area: 201 sq ft (18.81 m²)
Aspect ratio: 7.18:1
Airfoil: NACA 2412 at root, NACA 2409 at tip
Empty weight: 2,655 lb (1,204 kg)
Max takeoff weight: 4,400 lb (1,996 kg)
Fuel capacity: 92 US gal (77 imp gal; 350 l) normal,
128 US gal (107 imp gal; 480 l) with auxiliary tank
in the cabin instead of two passenger seats
Powerplant:
1× Pratt & Whitney PT6A-27 turboprop engine, delivering 550 shp (410 kW) and
driving a four-blade McCauley fully-feathering, constant-speed propeller, 6 ft 4 in (1.93 m) diameter
Performance:
Maximum speed: 199 mph (320 km/h, 173 kn) at sea level
Cruise speed: 144 mph (232 km/h, 125 kn) at 10,000 ft (3,000 m) (econ cruise)
Stall speed: 69 mph (111 km/h, 60 kn)
Range: 1421 mi (2.288 km, 1.243 nmi) at 10.000 ft (3.050 m) altitude and economy cruise
Service ceiling: 19,500 ft (5,900 m)
Rate of climb: 1,200 ft/min (6.1 m/s)
Takeoff distance to 50 ft (15m): 1,545 ft (471 m)
Landing distance from 50 ft (15m): 1,650 ft (500 m)
The kit and its assembly:
This build is the combination of ingredients that had already been stashed away for a long time, and the “Red Lights” Group Build at whatifmodellers.com in early 2021 was a good motivator and occasion to finally put everything together.
The basis is an ARII 1:72 Cessna T337 model kit – I had purchased it long ago with the expectation to create a military Skymaster from it, but I was confused by a fixed landing gear which would make it a 336? Well, without a further concrete plan the kit preliminarily landed in The Stash™…
However, the ARII model features the optional observation windows in the doors on the starboard side, in the form of a complete(!) fuselage half, so that it lends itself to a police or firefighter aircraft of some sort. This idea was furthermore fueled by a decal sheet that I had been given from a friend, left over from a 1:72 Italeri JetRanger, with three optional police helicopter markings.
The final creative element was the real-world “Pelican” conversion of six O-2As for the US Navy, as mentioned in the background above: the front engine was replaced with a longer nose and the engine configuration changed to a pusher-only aircraft with a single powerful turboprop engine. This looked so odd that I wanted to modify the ARII Cessna in a similar fashion, too, and all these factors came together in this model.
My Arii Cessna 337 kit is a re-boxing from 2009, but its origins date back to Eidai in 1972 and that’s just what you get: a vintage thing with some flash and sinkholes, raised (but fine) surface details and pretty crude seams with bulges and gaps. Some PSR is direly necessary, esp. the fit of the fuselage halves is cringeworthy. The clear parts were no source of joy, either; especially the windscreen turned out to be thick, very streaky (to a degree that I’d almost call it opaque!) and even not fully molded! The side glazing was also not very clear. I tried to improve the situation through polishing, but if the basis is already poor, there’s little you can do about it. Hrmpf.
However, the kit was built mostly OOB, including the extra O-2 glazing in the lower doors, but with some mods. One is a (barely visible) extra tank in the cabin’s rear, plus a pilot and an observer figure placed into the tight front seats. The extended “Pelican” nose was a lucky find – I was afraid that I had had to sculpt a nose from scratch with 2C putty. But I found a radome from a Hasegawa RA-5C, left over from a model I built in the Eighties and that has since long fallen apart. However, this nose fitted almost perfectly in size and shape, I just “blunted” the tip a little. Additionally, both the hull in front of the dashboard and the Vigilante radome were filled with as many lead beads as possible to keep the nose down.
The kit’s OOB spatted, fixed landing gear was retained – even though it is dubious for a Cessna 337, because this type had a fully retractable landing gear, and the model has the landing gear covers actually molded into the lower fuselage. On the other side, the Cessna 336’s fixed landing gear looks quite different, too! However, this is a what-if model, and a fixed landing gear might have been a measure to reduce maintenance costs?
The propeller was replaced with a resin four-blade aftermarket piece (from CMK, probably the best-fitting thing on this build!) on my standard metal axis/styrene tube adapter arrangement. The propeller belongs to a Shorts Tucano, but I think that it works well on the converted Cessna and its powerful pusher engine, even though in the real world, the SA-550 is AFAIK driven by a three-blade prop. For the different engine I also enlarged the dorsal air intake with a 1.5 mm piece of styrene sheet added on top of the molded original air scoop and added a pair of ventral exhaust stubs (scratched from sprue material).
Another addition is a pair of winglets, made from 0.5 mm styrene sheet – an upgrade which I found on several late Cessna 337s in various versions. They just add to the modernized look of the aircraft. For the intended observation role, a hemispherical fairing under the nose hides a 180° camera, and I added some antennae around the hull.
However, a final word concerning the model kit itself: nothing fits, be warned! While the kit is a simple affair and looks quite good in the box, assembling it turned out to be a nightmare, with flash, sinkholes, a brittle styrene and gaps everywhere. This includes the clear parts, which are pretty thick and blurry. The worst thing is the windscreen, which is not only EXTRA thick and EXTRA blurry, it was also not completely molded, with gaps on both sides. I tried to get it clearer through manual polishing, but the streaky blurs are integral – no hope for improvement unless you completely replace the parts! If I ever build a Cessna 337/O-2 again, I will give the Airfix kit a try, it can only be better…
Painting and markings:
The choice between the operator options from the JetRanger sheet was hard, it included Sweden and Italy, but I eventually settled for the LAPD because the livery looks cool and this police department not only operates helicopters, but also some fixed-wing aircraft.
I adapted the LAPD’s classic black-and-white police helicopter livery (Gloss White and Black, Humbrol 22 and 21, respectively) to the Cessna and extended it to the wings. At this point – already upset because of the poor fit of the hardware – disaster struck in the form of Humbrol’s 22 turning into a pinkish ivory upon curing! In the tin, the paint and its pigments looked pretty white and “clean”, and I assume that it’s the thinner that caused this change. What a crap! It’s probably the third tin with 22 that causes trouble, even though in different peculiarities!
The result was total rubbish, though, and I tried to rub the paint off as good as possible on the small model with its many windows, the fixed, delicate landing gear and the wing support struts. Then I overpainted the areas with Revell 301 (Semi-matt White). While this enamel yielded the intended pure white tone, the paint itself is rather gooey and not easy to work with, so that the overall finish turned out worse than desired. At least the black paint worked properly. The demarcations were created with black decal stripes (TL Modellbau), because the tiny model left little room for complex masking measures – and I did not risk any more painting accidents.
Since the aircraft would be kept shiny and clean, I just did a light black ink washing to emphasize surface details and did a light panel post-shading on the black areas, not for weathering but rather to accent surface structures. No further weathering was done (and necessary).
The markings/decals come – as mentioned above – from an Italeri 1:72 JetRanger, but they were augmented with some additional markings, e. g. grey walkways on the wings and “L-A-P-D” in large black letters under the wings, to distract from the poor finish of the white paint around them…
Finally, the kit was sealed overall with Italeri semi-gloss acrylic varnish, just with a matt anti-glare shield in front of the windscreen, which received thin white trim lines (generic decal stripes).
A challenging build due to the Arii kit’s rather poor basis, the massive rhinoplasty and the crisp paint scheme. However, I like the result – what-if models do not always have to be armed military vehicles, there’s potential in other genres, too. And this mono-engine “Pelican” Skymaster plays its role as a “flying eye” in police service credibly and well. However, this was my first and last Eidai kit…
New pics form an old kit - and a special one it is. Even though there are Valkyrie kits with the FAST packages for deep space use available, this is a self-made conversion with many extra parts from various Valkyrie kits and some extra "functions".
The basis originally wa a normal amd rather simple 1:100 ARII Battroid mode VF-1A kit. But legs, arms and especially the torso were modified, or replaced with "better" donation parts.
Besides the FAST pack additions, the legs received additional joints in the thighs. The hip mounting was totally mofidied to allow 3D movement of the legs - it is a completely different lower body part from a transformable IMAI 1:100 Valkyrie.
The lower arms also received FAST pack additions (which include more detailed missiles, from the Valkyrie fighter mode kits) and further additional joints in the upper arms as well as new, more delicate hands to give a more agile impression. The latter come from leftover Dorvack PA-58 Powered Armors kits, actually they are 1:24th scale!
In order to keep the proportions of the more slender lower body from the transformable kit in tune with the upper torso, the latter had to be elongated.
The upper body's back side was totally modified to hold moveable wings, also from a transformable Valkyire kit in 1:100. Thorugh this huge modification the wings can now actually be swung into landing position, and even seperate rocket pods can be added in 4 vinyl caps! On the downside, the wings in forward position prevent free movement of the arms... one of the mysteries that surround the VF-1's construction. ;)
The FAST rocket boosters on the back* are leftover standard pieces from a 1:100 scale Bandai VF-1 Gerwalk kit, but also modified in detail.
Finally, the color scheme: it is a standard pattern of Roy Fokker's "Skull" squadron, just displaying a Valkyrie "from the lot", nothing specific.
Basis is an overall satin white, and almost all squadron markings in black and blue were applied with paint and by hand, since no decals for this "version" were available at the time of making.
* For the die-hard fans: this depicted weapon/Battroid arrangement is not authentic. The Rö-X2A shoulder laser can (according to Macross folklore) only be mounted on VF-1S Valkyries, the A, J and D versions only take the "simple" rocket pods. But it looks cool...! ;)
+++ 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.
+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
Some background:
In December 1953, NATO Supreme Command issued specifications for a new light tactical support aircraft. European manufacturers were invited to submit their designs for this requested Light Weight Strike Fighter role. The G.91 was one contender and designed to this specification by the Italian engineer Giuseppe Gabrielli, hence the "G" designation.
The competition was intended to produce an aircraft that was light, small, expendable, equipped with basic weapons and avionics and capable of operating with minimal ground support. These specifications were developed for two reasons: the first was the nuclear threat to large air bases, many cheaper aircraft could be better dispersed, and the other was to counter the trend towards larger and more expensive aircraft.
The technical requirements were:
• 1,100 m (3,610 ft) takeoff distance over a 15 m (49 ft) obstacle
• Capability to operate from grass strips and roads
• Maximum speed of Mach 0.95
• Range of 280 km (170 mi) with 10 minutes over the target
• Armoured protection for the pilot and the fuel tanks
• 4 × 12.7 mm (.5 in) or 2 × 20 mm or 30 mm guns
• A maximum of 2,200 kg (4,850 lb) empty weight and 4,700 kg (10,360 lb) max. weight
The challenge of providing an engine that matched the requirements of lightness and power, reliability and ease of maintenance was solved by using the Bristol Siddeley Orpheus turbojet.
Project selections took 18 months to complete and the final selection of the three remaining competing designs was planned for late 1957. In September 1957, at the Centre d'Essais en Vol at Brétigny-sur-Orge, in France, the three rival aircraft types met for evaluation trials. During the trials the Italian aircraft performed impressively and, in January 1958, the Fiat G.91 was officially declared the winner.
Following a meeting of NATO Defence Ministers in April 1958 it was agreed that the G.91 would be the first NATO lightweight strike fighter. A production meeting was planned for May 1958 to discuss the production of the aircraft with financial support from the United States, the Americans would provide some of the finance for the French, German and Italian aircraft and pay for the Turkish aircraft. Other NATO states were supposed to buy the G.91, too., and the defence ministers reached agreement to order 50 aircraft for each country.
Given the large economic and commercial interests at stake, there was a certain amount of controversy surrounding this decision. After the loss of the G.91 prototype, the French government preferred to pursue development of the locally-designed Étendard. The British government similarly ignored the competition to concentrate on Hawker Hunter production for the same role.
The Italian government ordered the G.91 for the Italian Air Force before the results of the competition were known. An initial pre-production batch of machines would later go on to serve for many years with the Italian aerobatic team, the Frecce Tricolori as the G.91 PAN.
The G.91 was also considered by Austria, Norway, Spain, Greece, Switzerland, and even the United States Army, which briefly evaluated the type as a possible Forward Air Control aircraft before relinquishing all fixed-wing aircraft operations to the Air Force.
Spain bought the intended 50 aircraft (42 single seaters called G.91R/2, outfitting two fighter bomber squadrons, plus 8 trainers with tandem seats, comparable with the Italian G.91T/1 trainers), which were produced in Italy from early 1961 onwards and became operational with the Ejército del Aire in late 1962, replacing the F-86 and HA-220 Super Saetas in the ground attack/CAS role.
The G.91R/2 was a hybrid between the simple Italian G.91R/1 and the later, more sophisticated G.91R/4 for Greece and Turkey. It used the R/1's airframe with the modified nose housing three cameras, but already had four underwing hardpoints, structural reinforcements and improved avionics, including a Doppler radar and a revised instrumentation that was also introduced with the Italian R/1A.
The G.91 in Spanish service was already phased out from the mid 70ies onwards and completely retired in 1986, being replaced by F-5 and Mirage F.1.
General characteristics:
Crew: 1
Length: 10.3 m (33 ft 9 in)
Wingspan: 8.56 m (28 ft 1 in)
Height: 4.0 m (13 ft 1 in)
Wing area: 16.4 m² (177 ft²)
Empty weight: 3,100 kg (6,830 lb)
Loaded weight: 5,440 kg (11,990 lb)
Max. takeoff weight: 5,500 kg (12,100 lb)
Powerplant:
1× Bristol Siddeley Orpheus 803 turbojet, 22.2 kN (5,000 lbf)
Performance:
Maximum speed: 1,075 km/h (580 kn, 668 mph)
Range: 1,150 km (621 nmi, 715 mi)
Service ceiling: 13,100 m (43,000 ft)
Rate of climb: 30 m/s (6,000 ft/min)
Wing loading: 331 kg/m² (67.8 lb/ft²)
Thrust/weight: 0.42
Armament:
4× 12.7 mm (0.50 in) M2 Browning machine guns,
4× under-wing pylon stations holding up to 680 kg/1.500 lb of payload
The kit and its assembly:
Second entry for the "1 Week group Build" at whatifmodelers.com, since my first model was finished in just three days... This one struck me recently when I browsed through the F-5 book of the "Planes and Pilots" series, and came across the Spanish machines. What if Spain had bought the G.91...?
The resulting aircraft would surely have looked pretty in the three-tone "Small Asia" paint scheme, so the idea landed on the list and now entered the hardware stage.
...not until I got hands on a G.91 kit. Not easy, at least if you do not want to sink a fortune. I was lucky to find a pair of Airfix G.91s - from Japanese production, the boxes are dated 1981! And the kit is accordingly rather basic, especially anything concerning the interior is primitive, the wheels are a joke and the ordnance better ignored.
However, the fuselage lines are not bad, and since I had some leftover sprues from the more modern Revell G.91 in store I decided to pimp the Airfix kit with some donation parts and build an Ejércite del Aire whif.
It's not a true kitbashing, but a lot of Revell parts went into the vintage Airfix kit:
• The cockpit tub (which includes an upper wall for the air intake) was implanted
• The ejection seat and the dashboard, too
• An improvised jet nozzle was added - the Airfix kit just offers a bare hole(!)
• From the landing gear only the main struts were taken
• Even the landing gear covers were taken from the Revell kit
• The outer pylons are donations, too, while the inner ones were modified
• Ordnance is new, too, all from the spares box
The kit needed some putty work, but fit was surprisingly good.
Painting and markings:
Well, Spain is the theme and so I gave this Gina a "typical" livery, borrowed from export F-5s (e .g. for Spain, Iran, Jordania), the “Small Asia” paint scheme.
As basic colors I used Humbrol 74 (Linen), 29 (RAF Dark Earth) and 116 (FS34079), with pale grey undersides in Humbrol 129 (FS36440). The landing gear, its wells and the air intake were painted in Aluminum (Modelmaster), while the cockpit was kept in Dark Sea Grey (Humbrol 164) with a light blue dashboard - confirmed by real life pics.
As per usual the kit received a light black ink wash, light panel shading (also adding to a sun-bleached look) and some dry painting with light grey. No OOB decal was and could be used - 35 years took their toll!
Anyway, the decals come primarily from a Heller Mirage III, as well as some additional stencils e .g. from a BAC Lightning (Xtradecal sheet) and many red stripes or the camera ports, which were cut from TL Modellbau decal stripes.
Soot/exhaust stains were created with grinded graphite and around the nozzle and the gun ports. Finally, everything was sealed under a coat of matt acrylic varnish.
This Hispanic Gina is not a great piece of work, but the paint scheme changes IMHO the total look of the small aircraft, very different from what you usually see? And it's a second proud addition to whatifmodelers.com's "1 Week Group Build", created in the leftover five day timeframe after the first whif kit.
And does anybody doubt that Spain flew the G.91...?
+++ DISCLAIMER +++
Nothing you see here is real, even though the conversion or the presented background story might be based historical facts. BEWARE!
The Westland Whirlwind (Whirly or Whirlibomber in RAF slang) was a British twin-engined heavy fighter developed by Westland Aircraft. It was the Royal Air Force's first single-seat, twin-engined, cannon-armed fighter, and a contemporary of the Supermarine Spitfire and Hawker Hurricane. It was one of the fastest aircraft in service when it flew in the late 1930s, and was much more heavily armed than any other.
However, protracted development problems with its Rolls-Royce Peregrine engines delayed the entire project and only a relatively small number were ever built. During the Second World War only two RAF squadrons were equipped with the Whirlwind, and despite successful use as a fighter-bomber it was withdrawn from service in 1943.
After retirement in December 1943, the surviving Whirlwinds were sent to 18 Maintenance Unit at Dumfries, Scotland, where they were to be scrapped - but this was halted in early 1944 when the remaining airframes were modified for a completely new role: as radar-equipped pathfinders with the new, American H2X radar.
The H2X radar ("Mickey set", AN/APS-15) was an American development of the British H2S radar, the first ground mapping radar to be used in combat. It was used by the USAAF during World War II as a navigation system for daylight overcast and nighttime operations. It used a shorter 3 cm wavelength (10 GHz frequency) than the H2S, giving a sharper picture (H2S subsequently adopted 3 cm in the Mark III version entering operational service on November 18, 1943, for “Battle of Berlin”) and not known to have ever been spotted by the German Naxos radar detector, due to that receiving device's specific purpose being to spot the original British H2S equipment's lower frequency, 3 GHz emissions.
The hemispherical radome for the H2X's rotating dish antenna replaced the much bigger ball turret of the H2S, which was e. g. installed under Avro Lancaster bombers. The first H2X-equipped aircraft, B-17s, arrived in England in early February 1944, and were first used in combat later that month, and the first use of the "Mickey" was against Ploesti on April 5, 1944.
Availability of the new radar systems was scarse, so the idea of special aircraft guiding groups of bombers was born. Furthermore, due to the absence of radar maps as guidance, respective reconnaissance and radar mapping missions had to be conducted.
Consequently six PR Mk.XVI de Havilland Mosquito aircraft in the 482nd Bomb Group were equipped with H2X equipment in April 1944. The idea was to produce photographs of the radar screen during flights over Germany allowing easy interpretation of these radar images in later bombing runs. Three aircraft were subsequently lost in training, and the project was discontinued, but the idea was kept up.
Twenty Westland Whirlwind airframes as well as further twelve PR Mk.XVI de Havilland Mosquito aircraft were fitted with H2X. The Whirlwinds saw major modification: first of all, the complete nose section was redesigned. The cannon armament was replaced by a more spacious, deeper compartment that carried the H2X in the nose section behind an opaque perspex cover, as well as the technical equipment for the radar and a work station for a radar operator right in front of the cockpit.
The Whirlwind's original Peregrine engines were replaced by bigger, more powerful Merlin 76, which were optimized for high altitude operation. The engines also featured cabin pressure blowers that supported a pressurized crew compartment . Wet hardpoints under the wings were added, so that drop tanks extended the range. Theoretically, two 1.000 lb (454 kg) bombs could be carried, but the Whirlwind PR.3, how the aircraft was officially designated, normally flew unarmed.
The new machines were allocated to RAF No. 627 Squadron. This squadron had been formed on 12 November 1943 at RAF Oakington from part of 139 Squadron, and it was originally equipped with the de Havilland Mosquito. It flew operations as part of No. 8 Group's light bomber force. Beyond normal bombing missions it also carried out Pathfinder duties and was involved in attacks on Berlin in early 1944. In April 1944 it was transferred to No. 5 Group as a specialised target marking squadron, although it also carried out amend reconnaissance and normal bombing duties.
Beginning in May 1944 the Whirlwinds were, together with some radar-equipped Mosquitos, integrated into American Bomber Groups and joined by American aircraft, e .g. modified P-38Ls. Nicknamed "Pelican" by the crews, the retrofitted Whirlwinds flew bomber guidance and radar mapping night missions until February 1945. The sets tended to overload the aircraft's electrical system and occasionally exploded, and Mickey aircraft had the highest loss, abort and mission failure rates, so that service was severely curtailed after February 19, 1945, but the machines were kept in service and flew photo and weather reconnaissance missions until the end of the hostilities.
General characteristics:
Crew: One pilot
Length: 35 ft 4 1/2 in (10.80 m)
Wingspan: 45 ft 0 in (13.72 m)
Height: 11 ft 0 in (3.35 m)
Wing area: 250 ft² (23.2 m²)
Airfoil: NACA 23017-08
Empty weight: 8.800 lb (3.,995 kg)
Loaded weight: 11.467 lb (5.206 kg)
Max. take-off weight: 12.665 lb (5,750 kg)
Powerplant:
2× Rolls-Royce Merlin 76 liquid-cooled V-12 and fitted with a two-speed, two-stage supercharger and a Bendix Stromberg anti-g carburettor, rated at 1.233 hp (919 kW) at 35,000 ft (10,668 m) and driving de Havilland constant speed propellers with a diameter of 9 ft 10 in (3.00 m)
Performance:
Maximum speed: 415 mph (361 kn, 668 km/h)) at 28,000 ft (8,500 m)
Stall speed: 95 mph (83 knots, 153 km/h) (flaps down)
Range: 900 mi (782 nmi, 1.400 km))
Service ceiling: 37.000 ft (11.000 m)
Armament:
None. Two underwing hardpoints, normally occupied with a pair of 62 imp. gal (450l) slipper tanks. Alternatively a pair of bombs of up to 1.000 lb (454 kg) caliber could be carried, or racks with target indicator bombs, inclusing various candles and No. 1 Mk 1 TI Bombs, No. 7 Mk 1 Multi-flash Bombs or No. 8 Mk 1 Spotfire Bomb
The kit and its assembly:
This is another (kind of) tribute build, inspired by one of many Westland Whirlwind profiles created by fellow user Franclab at flickr.com.
Among the many great and creative ideas was a Pathfinder Whirlwind with a glass nose (reminiscent of the D.H, Mosquito bombers and also similar to the P-38L pathfinders with an optical bomb sight), finished in classic PRU Blue livery with USAAF insignia.
I liked this two seater idea, so I decided to make a contemporary hardware aircraft, loosely based on Franclab's creative input.
The kit is the venerable Airfix kit, and it saw some modifications. After my earlier Whirlwind FB.2 with implanted Mosquito engine nacelles resulted in a slightly overpowered ('Popeye style') bird, I tried something different this time: just an engine swap.
In this case I implanted resin Merlins from Pavla, which are replacements for the Tamiya kit and depict high altitude 72/73 versions. What sound simple was just as tedious as changing the complete nacelles: the Merllins are bigger than the Peregrines, in any dimension, so mounting them and blending them with the nacelles took some serious sculpting and putty work.
Another issue were the propellers: the Mosquito spinner is considerably larger than the Whilrwind's (including the propeller itself!), and in order to mount the OOB propellers I added a spacer, carved from spare wheels from the scrap box, so that a fluid, overall line was kept. Lots of work!
The new nose was taken wholesale from the Dragon P-38L Pathfinder kit, the one with the solid H2X nose. The alternative 'Droop Snoop' version with the glass nose is also available, but I found the radar-equipped version more interesting, and it is more voluminous so that the second crew member (a bomb aimer from an Airfix B-17) could rather sit than lay prone in the Whirlwind's nose.
As a drawback, the deeper new front had to be blended with the slender rest of the aircraft. I bridged this section with the half of a vintage Matchbox EA-6B drop tank, resulting in a kangaroo-like shape which could be justified through a ventral camera compartment, since the nose is occupied with the H2X equipment. Looks odd, as intended, but interesting, and the nose arrangement could also work for a night fighter - even though I have no idea where potential guns should be mounted?
Cockpit and landing gear were taken OOB, I just added the bulbous slipper tanks which were scratched from a Hawker Sea Fury's (PM Models) drop tanks, and also a lot of putty to blend them under the wings.
Painting and markings:
Simple and classic, with USAAF Mosquitos (ex RAF photo reconnaissance aircraft) as benchmark. All over PRU Blue sounds a bit boring, but the typical red tail for the pathfinder aircraft makes a massive contrast, and I decided to take the blue livery further: towards late 1944 the Invasion Stripes were about to disappear on Allied aircraft, painted over and in many cases the fuselage bands (or just the ventral section) were visible.
That's what I wanted to recreate: an almost all blue aircraft, but with the stripes dimly shining through. This was achieved in the same fashion as it would have been done in real life: the stripes were roughly painted with acrylics on wings and fuselage. Then the normal PRU Blue (Modelmaster) was added all around, and as final step the same PRU Blue was thinned and washed with a big, soft brush over the stripes, controlling the pigments' thickness and adding some slight streaks from front to back.
While not perfect, I am happy with the result - you can tell that there is "something" on and below the wings, as well as on the spine, but it is not clear at all.
Some dry-brushing with shades of blue-gray (e .g. revell 57 and Humbrol 230 and 147) completed the basic paint work.
The tail was painted in Humbrol 60 and shaded with 174 - the tone turns out to be orangic, a perfect match, as far as I can tell.
The radome was first primed with Humbrol 168 (Hemp) and then dry-brushed with 71 an 166 (Beige and RAF Light Aircraft Grey).
The markings were a bit tricky, and I used a real life, ex-RAF PR Spitfire in US service as benchmark: it received Stars and Bars, but retained its former RAF aircraft code, as well as its former RAF squadron code - but the latter were placed on the fin. I copied this concept, and since the high stabilizer blocks good view, the individual aircraft code letter (on Mosquitos it was frequently placed on the fin) was moved on a black contrast circle onto the flanks, while the RAF No. 627 Squadron. code "AZ" was painted in yellow digits above the three last digits of the RAF aircraft number. Totally odd, but plausible, and in the end more colorful than expected!
A small nose art completed the job, before the exhausts received some soot stains and the kit a coat with matt acrylic varnish.
A pretty aircraft/conversion - it looks a bit odd on the ground, due to the longer nose and engines, but the overall lines look very good, especially on the flight pics.
So, with best regards to Canada, thanks a lot for the inspiration. ^^
+++ 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 Temco Model 63 "Buckskin" trainer was designed by Texas Engineering & Manufacturing Company (TEMCO) as a private venture to replace the US Navy's piston-engine, land-based Beech Model B45 'Mentor' primary trainers in the mid 1960ies, but with better performance and more likeliness to modern jet fighters.
The Model 63’s forerunner, the Temco Model 51, had been initially proposed to the US Air Force in response to an Air Force competition for a jet-powered primary trainer, which was eventually won by the Cessna T-37 Tweet. A small number of the Model 51 were built and put into service, powered by a Continental Motors J69-T-9 (a license-built Turbomeca Marboré) jet engine and officially designated TT-1 ‘Pinto, but only saw a limited career.
Like the Pinto, the Model 63 was a mid-wing, tricycle landing gear trainer with an enclosed cockpit. What made the Model 63 unusual was a pull/push tandem engine arrangement, similar to the Cessna 336/337 that was under development at the same time. The Temco Model 63 was driven by two small Turbomeca Bastan IV turboprop engines, each developing 650 shp (485 kW).
The rationale behind this layout were the compact dimensions, actually, the aircraft was not bigger than the single engine TT-1. Studies undertaken during the early design stages had shown that a classic layout with wing-mounted engines would have necessitated a considerably higher wing span and a longer fuselage, too. Another benefit was the improved safety of two engines, esp. during envisioned long navigation flights over the open sea, and the Bastan engines gave the Model 63 the ability to fly safely even with one of the engines shut down.
Compared with the TT-1’s small jet engine, the propellers gave the Model 63 a better responsiveness to pilot input and the turboprop engines offered a very good fuel economy, while enabling almost the same performance as the single jet precursor. Furthermore, the two engines gave instructors the option to simulate different flight regimes, while the tandem arrangement helped avoid torque and asymmetrical thrust issues. Besides, the T2T was equipped with many of the same features found in contemporary operational jets, including ejection seats, liquid oxygen equipment, speed brakes, along with typical flight controls and instrument panels.
Anyway, the unusual layout came at a price: it necessitated a totally different tail section with twin tail booms and a single, high stabilizer connecting them at the tips of the fins. Despite familiar outlines, only parts of the TT's outer wings and the cockpit could be used on the Model 63 - the rest had to be re-designed and/or strengthened, so that the aircraft's overall weight became markedly higher than the TT's. Despite this drawback, officials became interested enough in the turboprop trainer program to procure a pre-series for trials and direct comparison with jet- and piston-engine alternatives.
The aircraft received the official designation T2T. Like the Pinto, the T2T was intended as a primary trainer, so it carried no internal armament but could be outfitted with wing tip tanks and had two underwing hardpoints for 500 lb each, placed outside of the strengthened landing gear. These hardpoints were reserved for auxiliary tanks, cargo boxes, smoke generators or camera pods.
The first XT2T maiden flight took place in summer 1959. Flight characteristics were considered good, and, compared with the earlier TT-1, the machine was not as underpowered (which was a problem during landing abortions and touch-and-go manoeuvers). After initial tests with two more prototypes in summer 1960, a batch of five YT2T-1 pre-production aircraft, which were updated to the intended serial production standard and incorporated some minor modifications, was ordered and directly sent to the Naval Air Test Center (NATC) Patuxent River.
Results were generally positive, so that a further batch of 24 aircraft were produced as T2T-1s between 1962 and 1963. These aircraft served in the Air Training Command at Pensacola, Florida and used in a training program demonstration testing the feasibility of using jet- and turboprop-powered trainer for primary flight training.
The tests were not conclusive, though, and no further T2Ts ordered. The 'Buckskin', how the aircraft was christened unofficially, was pleasant to fly and offered very good performance. But the aircraft was – esp. for its limited role – complex. Maintenance costs were high, and the authorities were never really happy about the French engines on board of the home-grown trainer type.
The US Navy liked the turboprop engine, though, but wanted a less complex aircraft. This eventually materialized in the early Seventies with the T-34C Turbo-Mentor. After a production hiatus of almost 15 years, the Beech Model 45 returned, powered by a Pratt & Whitney Canada PT6A-25 turboprop engine. Mentor production restarted in 1975 for deliveries of T-34Cs to the USN and of the T-34C-1 armed version for export customers in 1977, this version featuring four underwing hardpoints. Since the late 1970s, T-34Cs have been used by the Naval Air Training Command to train numerous Naval Aviators and Naval Flight Officers for the U.S. Navy, U.S. Marine Corps, U.S. Coast Guard, and numerous NATO and Allied nations - and the small T2T fleet was phased out by 1979.
General characteristics:
Crew: two
Length: 32 ft 7 in (9.93 m)
Wingspan (incl. tip tanks): 29 ft 10 in (9.09 m)
Height: 8 ft 1 1/2 in (2.48 m)
Wing area: 150 sq ft (13.9 m2)
Empty weight: 2,848 lb (1,292 kg)
Loaded weight: 5,400 lb (2,448 kg)
Powerplant:
2× Turbomeca Bastan IV turboprop engines, rated at 650 shp (485 kW) each
Performance:
Maximum speed: 345 mph (300 knots, 556 km/h) at 15,000 ft (4,600 m)
Never exceed speed: 518 mph (450 knots, 834 km/h)
Cruise speed: 247 mph (215 knots, 398 km/h) at 25,000 ft (7,600 m)
Stall speed: 69 mph (60 knots, 111 km/hr)
Endurance: 2.5 hr
Service ceiling: 30,000 ft (9,145 m)
Rate of climb: 1,900 ft/min (9.7 m/s)
Armament:
2x underwing hardpoints for a total load of up to 1.000 lb (454 kg)
2x optional wing tip tanks
The kit and its assembly:
The final entry for the 2016 "In the Navy" Group Build at whatifmodelers.com, and a close call since I started work on this conversion only 5 days before the GB's deadline!
The original inspiration was the photoshopped picture of a private TT-1 in all-blue USN markings, created by artist "Stéphane Beaumort" in 2010 (check this illustration originally posted at AviaDesign: aviadesign.online.fr/images/temco-buckskin2.jpg).
A slightly bizarre aircraft with the tandem propellers and the twin tail booms, and IMHO with some fishy details in the CG rendition, e.g. including the idea of driving both propellers with a single engine through shafts and gearboxes. But the concept looked overall feasible and Special Hobby offers a very nice TT-1 Pinto kit, which I was able to procure from Poland an short notice. As a bonus, this kit comes with markings for this specific, blue aircraft (“13/S”), actually a re-constructed, privately owned machine.
The Special Hobby kit became the basis for my personal interpretation of the T2T, and it underwent some conversions, being outfitted with a variety of donation parts:
- The front engine once was a cut-away Merlin from a Hobby Boss Hawker Hurricane
- The tail booms and fins come from a Revell Focke Wulf Flitzer
- The stabilizer was created from two Hobby Boss He 162 tail elements
- Propellers come from a vintage, box scale Revell Convair Tradewind
- In order to attach them, styrene tubes were implanted and the props mounted on metal axis’
- The front wheel also belongs to a Hobby Boss He 162, longer than the OOB parts
- The main wheels are bigger, from a Matchbox Folland Gnat
Work started with the central fuselage, the added front engine and conversions for the rear pusher engine. Once the wings were in place and the propeller diameter clear, attachment points for the tail booms were scratched from styrene tube and added to the wings' upper sides (leaving the lower surface free, so that the OOB landing gear could be used). Then the tail booms and the tailored stabilizer were mounted, as well as the wing tip tanks.
The landing gear came next; the main struts and covers were used, but slightly bigger wheels chosen from the scrap box. For the front wheel well, a "hole" had to be dug out of the massive new nose section (consisting of 2C putty and lead beads) - the OOB covers were used, though, and a longer and more massive front wheel was mounted.
Sounds simple and conclusive, but things evolved gradually and the job involved a lot of body work - under dire time pressure. The fact that the kit fell from my workbench after day #2 and hit the floor in a nasty angle, so that the tails suffered severely and needed repair, did not help either...
Another issue became the canopy. I am not certain where the problem lies, but the canopy turned out to be 2mm too short for the fuselage? Could be the result of the massive rhinoplasty with the added front engine, but I am also a bit worried about the position of the cockpit tubs – when I mounted them, the appeared to be in the correct position, but once the fuselage was closed both seat positions appear to be too far to the back – even though the dashboards seem to be correct?
Painting and markings:
I used the CG drawing as benchmark, also because the Special Hobby kit came with the right decal set for an all-blue USN livery, which historically was about to be changed in the late Fifties to brighter schemes.
The interior surfaces, both cockpit and the landing gear, were painted in a very light gray (FS 36495, Humbrol 147), just as on the real world TT-1. All outside surfaces became Sea Blue FS 35042 (ModelMaster). Very simple, and some panel shading with was done for a more dramatic look on the otherwise uniform airframe.
The silver leading edges on wings and stabilizer, as well as the yellow canopy framing, were created from decal strips. The propeller spinners became, as a small highlight, bright red, and some of the OOB sheet’s red trim for “13/S” were used, too. No more weathering was done, and, finally, everything sealed under a coat of gloss acrylic varnish, except for the propeller blades and the black anti-glare panel, which became matt.
An odd creation, and taking into account the four and a half days time frame from sprues to beauty pics (including background research and text), as well as the body work involved in the building process with the new front engine and the tail booms, I am quite happy with the result. Could have been better, sure, but it was finished in time, just as planned/hoped for. ;)
Anyway, the T2T looks interesting; my build slightly differs from the benchmark CG renditions, but remains true to Stéphane Beaumort’s basic idea. Cheers!