The Fisher P-75 Eagle was an American fighter aircraft designed by the Fisher Body Division of General Motors. Development started in September 1942 in response to United States Army Air Forces requirement for a fighter possessing an extremely high rate of climb, using the most powerful liquid-cooled engine then available, the Allison V-3420. The program was cancelled after only a small number of prototypes and production aircraft had been completed, as it was no longer required in its original role, could not be quickly deployed, and possessed no significant advantages over aircraft already in production/

In October 1942, the contract for two prototypes, designated "XP-75", was signed with the Fisher Body Division of GM. The design concept was to use the outer wing panels from the North American P-51 Mustang, the tail assembly from the Douglas A-24 (SBD), and the undercarriage from the Vought F4U Corsair in a general layout much as in the Bell P-39 Airacobra with the engine located amidships with the contra-rotating propellers driven through extension shafts. At an early design stage, however, Curtiss P-40 Warhawk outer wing panels were substituted for the P-51 panels.

In mid-1943, the need for long-range escort fighters became more urgent than fast climbing interceptors so a decision was made to order six more XP-75 airplanes modified for the long-range role. At this time, an order for 2,500 production aircraft was also let, but with the stipulation that if the first P-75A was not satisfactory the complete order might be canceled.

At the time, General Motors was busy in several projects towards the war effort, including the mass production of several different aircraft types, among them the Grumman TBF Avenger. Some sources[2] claim that the P-75 was the result of a scheme to get General Motors out of being forced to build Boeing B-29 Superfortresses; the P-75 project being a "high-priority" project to help GM avoid the added strain of Superfortress production. The "Eagle" was given extensive media coverage prior to its first flight, being trumpeted as a "wonder plane".

Powered by a V-3420-19 24-cylinder engine rated at 2,600 hp (1,900 kW) driving co-axial contra-rotating propellers, the XP-75 flew for the first time on 17 November 1943. The second XP-75 flew shortly thereafter, with all six long-range XP-75s entering the test program by the spring 1944. The test program brought up numerous teething problems, including miscalculation of the fighter's center of mass, failure of the engine to produce its expected power, inadequate engine cooling, high aileron forces at high speed, and poor spin characteristics. Redesigns were introduced into the long-range XP-75s including a modified tail assembly, new "bubble" canopy, and a V-3420-23 engine that corrected most of the deficiencies by the time the first P-75A Eagles entered flight testing in September 1944.

By this time, the Army Air Forces had decided to limit the number of combat aircraft types in production and not enter into large-scale production of new types that might not be available before the war ended. As the twin-engine Lockheed P-38 Lightning and North American P-51 Mustang demonstrated excellent long-range capabilities, the production run of the P-75A Eagle was subsequently terminated on 6 October 1944. It was decided to use the six completed production aircraft for experimental work and development of the V-3420 engine. As a result of those events, the P-75A did not complete formal performance trials due to termination of the production contract. Ultimately, only eight XP-75s and six P-75As were built.

The Flettner Fl 282 Kolibri (Hummingbird) is a single-seat intermeshing rotor helicopter, or synchropter, produced by Anton Flettner of Germany. According to Yves Le Bec, the Flettner Fl 282 was the world's first series production helicopter.

The Fl 282 Kolibri was an improved version of the Flettner Fl 265 announced in July 1940, which pioneered the same intermeshing rotor configuration that the Kolibri used. It had a 7.7 litre displacement, seven-cylinder Siemens-Halske Sh 14 radial engine of 110–120 kW (150–160 hp) mounted in the center of the fuselage, with a transmission mounted on the front of the engine from which a drive shaft ran to an upper gearbox, which then split the power to a pair of opposite-rotation drive shafts to turn the rotors.

The Sh 14 engine was a venerable, tried-and-true design with low specific power output and low power/weight ratio (20.28 hp/L, 0.54 hp/lb) which could (anecdotally) run for up to 400 hours without major servicing, as opposed to the more powerful 27 litre displacement, nine-cylinder BMW/Bramo Fafnir 750 hp radial engine powering the larger Focke Achgelis Fa 223 helicopter, whose higher output (27.78 hp/L, 0.62 hp/lb), more modern design required moderate maintenance as often as every 25 hours (such as changing spark plugs, etc., well within the norm for modern radial engines of that era). While such a heavy and low-powered engine would work well in a very small craft like the Fi 282, to try and scale it up and use an engine of equivalent power/weight ratio in the 700-1000 hp class would result in a massive and heavy engine leaving little excess capacity for cargo or passengers. 750 hp was the lowest rating that the Fafnir was available in - indeed, it was a low-power, low maintenance design compared with many other engines of this era. The Fl 282's fuselage was constructed from steel tube covered with doped fabric, and it was fitted with a fixed tricycle undercarriage.

The German Navy was impressed with the Kolibri and wanted to evaluate it for submarine spotting duties, ordering an initial 15 examples, to be followed by 30 production models. Flight testing of the first two prototypes was carried out through 1941, including repeated takeoffs and landings from a pad mounted on the German cruiser Köln.

The first two "A" series prototypes had enclosed cockpits; all subsequent examples had open cockpits and were designated "B" series.

In case of an engine failure, the switch from helicopter to autorotation was automatic.

Three-bladed rotors were installed on a test bed and found smoother than the vibrating 2-blade rotor, but the concept was not pursued further. The hover efficiency ("Figure of Merit") was 0.72 whereas for modern helicopters it is around 60%.

Intermeshing rotors were not used on a mass production helicopter until after World War II.

For details of operational history and variants, click here.

The Focke-Wulf Ta 152 is a World War II German high-altitude fighter-interceptor designed by Kurt Tank and produced by Focke-Wulf.

The Ta 152 was a development of the Focke-Wulf Fw 190 aircraft. It was intended to be made in at least three versions—the Ta 152H Höhenjäger ("high-altitude fighter"); the Ta 152C designed for medium-altitude operations and ground-attack, using a Daimler-Benz DB 603 and smaller wings; and the Ta 152E fighter-reconnaissance aircraft with the engine of the H model and the wing of the C model.

The first Ta 152H entered service with the Luftwaffe in January 1945. The Ta 152 was produced too late and in insufficient numbers to have a significant role in the war.

The Fw 190's BMW 801 engine was originally designed for bomber and transport aircraft flying at medium altitudes in the 15,000 to 20,000 feet (4,600 to 6,100 m) range. In keeping with this role it used a relatively simple single-stage supercharger that lacked performance above 20,000 feet (6,100 m) altitude. This presented a problem for fighter use, where high-altitude performance was desirable. Through careful tuning, the Fw 190 instead emerged as a powerful medium altitude design. Several experimental models of the 190 with different engines were tested with improved high altitude performance, but these were not high priority projects.

Allied heavy bombers and escort fighters began flying operations at higher altitudes, around 25,000 feet (7,600 m). At these altitudes, the 190 found itself at a disadvantage, becoming acute in early 1944 when the long range P-51 Mustang arrived in quantity. This led to the introduction of the Fw 190D-9, mounting the Junkers Jumo 213E engine. This engine had a two-stage supercharger and much better altitude performance. However, the rest of the aircraft's design, especially the relatively short wings, made it difficult to fly at high altitudes. While the D-9 upgrade was expedient, it was not ideal.

High-altitude fighters

Rumours of the B-29, which would cruise at altitudes at which no German aircraft could comfortably operate, added impetus for a dedicated high-altitude design. The Reichsluftfahrtministerium (German Air Ministry, or "RLM") requested proposals from both Focke-Wulf and Messerschmitt for a high-altitude interceptor. Messerschmitt answered with the Bf 109H, and Focke-Wulf entered a range of designs; the Fw 190 Raffat-1 (Ra-1) fighter would replace the existing 190D series, the Ra-2 was a dedicated high altitude fighter, and the Ra-3 was a ground-attack aircraft.

These designs developed into the Fw 190 V20 (Ta 152A), V21 (Ta 152B) and V30 (Ta 152H) prototypes, all based on the 190D-9 but with varying degrees of improvement. The V20 used the same Jumo 213E engine as the Fw 190D-9, while the V21 used the DB 603E. Neither of these offered any significant improvement over the 190D-9, and further development of the Ta 152A and B was cancelled. The V21 airframe, however, was further modified as the V21/U1 and became the prototype for the Ta 152C.

The Ta 152's fuselage was an extended version of the Fw 190D-9 fuselage with wider-chord fixed vertical tail surfaces (especially the top half), and hydraulic rather than electrically controlled undercarriage and flaps. Due to the changes in the center of gravity and overall balance, the nose was also lengthened.[5][page needed] The D-9 retained the 10.51 metres (34.5 ft) wingspan of the original pre-war Fw 190 models, but this was slightly extended for the C model to 11 metres (36 ft), and greatly extended for the H model to 14.44 metres (47.4 ft), which gave it much better control at high altitudes at the cost of speed at lower altitudes. 

Due to the war's impact on aluminium availability, the wing was built around two steel spars, the front extending from just past the landing gear attachment points, and the rear spar spanning the entire wing. The wing itself was designed with 3° of washout, from the root to the flap-aileron junction, to prevent the ailerons from stalling before the centre section of the wing.

For more details of design and development, operational history and 8 variants, click here. A total of 69 Ta 152's were built.

The Focke-Wulf Fw 189 Uhu ("Eagle Owl") is a German twin-engine, twin-boom, three-seat tactical reconnaissance and army cooperation aircraft. It first flew in 1938 (Fw 189 V1), entered service in 1940 and was produced until mid-1944.

In addition, Focke-Wulf used this airframe in response to a tender request by the RLM for a dedicated ground-attack airplane, and later submitted an armored version for trials. However, the Henschel Hs 129 was selected instead.

In 1937, the German Ministry of Aviation issued a specification for a short-range, three-seat reconnaissance aircraft with a good all-round view to support the German army in the field, replacing the Henschel Hs 126, which had just entered service. A power of about 850–900 hp (630–670 kW) was specified. The specification was issued to Arado and Focke-Wulf. Arado's design, the Ar 198, which was initially the preferred option, was a relatively conventional single-engined high-wing monoplane with a glazed gondola under the fuselage. Focke-Wulf's chief designer Kurt Tank's design, the Fw 189, was a twin-boom design, powered by two Argus As 410 engines instead of the expected single engine. As a "twin-boom" design like the earlier Dutch Fokker G.I, the Fw 189 used a central crew gondola for its crew accommodation, which for the Fw 189 would be designed with a heavily glazed and framed "stepless" cockpit forward section, which used no separate windscreen panels for the pilot (as with many German medium bombers from 1938 onwards). Blohm & Voss proposed as a private venture something even more radical: chief designer Dr. Richard Vogt's unique asymmetric BV 141. Orders were placed for three prototypes each of the Arado and Focke-Wulf designs, in April 1937.

The Fw 189 had as part of its defensive armament, an innovative rear-gun emplacement designed by the Ikaria-Werke: a rotating conical rear "turret" of sorts, manually rotated with a metal-framed, glazed conical fairing streamlining its shape, with the open section providing the firing aperture for either a single or twin-mount machine gun at the unit's circular-section forward mount. The Fw 189 was produced in large numbers, at the Focke-Wulf factory in Bremen, at the Bordeaux-Merignac aircraft factory (Avions Marcel Bloch's factory, which became Dassault Aviation after the war) in occupied France, then in the Aero Vodochody aircraft factory in Prague, occupied Czechoslovakia. Total production was 864 aircraft of all variants.

Called the Fliegende Auge (Flying Eye) of the German Army, the Fw 189 was used extensively on the Eastern Front with great success. It was nicknamed "Rama" ("frame" in the Russian, Ukrainian and Polish languages) by Soviet forces, referring to its distinctive tailboom and stabilizer shapes, giving it a quadrangular appearance. Despite its low speed and fragile looks, the Fw 189's manoeuvrability made it a difficult target for attacking Soviet fighters. The Fw 189 was often able to out-turn attacking fighters by flying in a tight circle into which enemy fighters could not follow.

Night Reconnaissance Group 15, attached to the 4th Panzerarmee in southern Poland during late 1944, carried out nocturnal reconnaissance and light bombing sorties with a handful of 189A-1s. These planes typically lacked the main model's rear dorsal machine gun. Small numbers of A-1s were used as night fighters in the closing weeks of the war - the aircraft were modified by having their reconnaissance equipment removed and then fitted with FuG 212 AI radar in the nose and a single obliquely-firing 20mm MG FF autocannon in the common Schräge Musik upwards/forward-firing offensive fitment also used for heavier-airframed German night fighters, like the Bf 110G. For the Fw 189 the installation was in the crew nacelle in the space where the rear dorsal gun was normally housed.

Number built    864

It was  designed by Kurt Tank at Focke-Wulf in the late 1930s and widely used during World War II. Along with its well-known counterpart, the Messerschmitt Bf 109, the Fw 190 became the backbone of the Luftwaffe's Jagdwaffe (Fighter Force). The twin-row BMW 801 radial engine that powered most operational versions enabled the Fw 190 to lift larger loads than the Bf 109, allowing its use as a day fighter, fighter-bomber, ground-attack aircraft and, to a lesser degree, night fighter.

The Fw 190A started flying operationally over France in August 1941, and quickly proved superior in all but turn radius to the Royal Air Force's main front-line fighter, the Spitfire Mk. V, particularly at low and medium altitudes. The 190 maintained superiority over Allied fighters until the introduction of the improved Spitfire Mk. IX. In November/December 1942, the Fw 190 made its air combat debut on the Eastern Front, finding much success in fighter wings and specialised ground attack units called Schlachtgeschwader (Battle Wings or Strike Wings) from October 1943 onwards.

The Fw 190A series' performance decreased at high altitudes (usually 6,000 m (20,000 ft) and above), which reduced its effectiveness as a high-altitude interceptor. From the Fw 190's inception, there had been ongoing efforts to address this with a turbosupercharged BMW 801 in the B model, the much longer-nosed C model with efforts to also turbocharge its chosen Daimler-Benz DB 603 inverted V12 powerplant, and the similarly long-nosed D model with the Junkers Jumo 213. Problems with the turbocharger installations on the -B and -C subtypes meant only the D model entered service in September 1944.

For more information on the design concepts and the long list of variants, click here.

The specifications below are for the Fw 190A-8 model.

The Focke-Wulf Fw 200 Condor, also known as Kurier to the Allies (English: Courier), was a German all-metal four-engined monoplane originally developed by Focke-Wulf as a long-range airliner. A Japanese request for a long-range maritime patrol aircraft led to military versions that saw service with the Luftwaffe as long-range reconnaissance and anti-shipping/maritime patrol bomber aircraft. The Luftwaffe also made extensive use of the Fw 200 as a transport aircraft.

It achieved success as a commerce raider until mid-1941, by which time it was being harried by long-range RAF Coastal Command aircraft and the Hurricane fighters being flown from CAM ships.

The Fw 200 resulted from a proposal by Kurt Tank of Focke-Wulf to Dr. Rudolf Stuessel of Deutsche Lufthansa to develop a landplane to carry passengers across the Atlantic Ocean to the US. At the time, it was an unusual concept because airlines used seaplanes on long over-water routes. To fly long distances economically, the Fw 200 was designed to cruise at an altitude of over 3,000 m (9,800 ft) - as high as possible without a pressurized cabin. Existing airliners were designed to cruise at altitudes below 1,500 m (5,000 ft). The Fw 200 was briefly the world's most modern airliner, until other high-altitude airliners started operating: the Boeing 307 in 1940 and the Douglas DC-4 in 1942. The designation "Condor" was chosen because, like the condor bird, the Fw 200 had a very long wingspan relative to other planes of its era, to facilitate then high-altitude flight.

The first prototype, the Fw 200 V1, made its first flight after just over one year of development on 27 July 1937 with Tank at the controls. It was an all-metal, four-engined monoplane powered by four American 875 hp Pratt & Whitney Hornet radial engines, and intended to carry 26 passengers in two cabins for up to 3,000 km (1,860 mi). Two further prototypes were powered by German 720 hp BMW 132G-1 radials.

The Japanese Navy requested a military version of the Fw 200 for search and patrol duties, so Tank designed the Fw 200 V10 with military equipment. This Fw 200 was held in Germany because war had broken out in Europe by that time. This aircraft became the basis for all later military models used by the Luftwaffe.

To adapt it for wartime service, hardpoints were added to the wings for bombs, the fuselage was strengthened and extended to create more space. Fore and aft dorsal gun positions were added, in addition to an extended-length version of the Bola ventral gondola typical of World War II German bomber aircraft; incorporating a central bomb bay (usually used for additional long-range fuel tanks), as well as heavily glazed fore and aft ventral flexible machine gun emplacements at either end. The extra weight introduced by its military equipment meant that some early Fw 200 aircraft broke up on landing, a problem that was never entirely solved. Later models were equipped with Lorenz FuG 200 Hohentwiel low UHF-band ASV radar in the nose. In 1943 a version entered service that could carry the Henschel Hs 293 guided missile, mandating fitment of the associated Funkgerät FuG 203 Kehl radio guidance gear on a Condor to steer them.

At the suggestion of his personal pilot Hans Baur, Adolf Hitler specified a modified and unarmed prototype Condor, the Fw 200 V3, as his personal transport, as a replacement for his Junkers Ju 52. Originally configured as a 26-passenger Lufthansa transport (Works No. 3099), it was reconfigured as a plush two-cabin airliner. Hitler's seat in the cabin was equipped with a wooden table, seat-back armour plating, and an automatic parachute with downward throws. According to Baur, it was never armed. In line with Hitler's aircraft preferences, it carried the markings "D-2600" and was named "Immelmann III" in honour of World War I flying ace Max Immelmann. As the war progressed it changed designation to "WL+2600" and finally "26+00"; it was destroyed at Berlin Tempelhof Airport in an Allied bombing raid on 18 July 1944.

For more details on the operational history and three variants of the Condor, click here.

The Focke-Wulf Ta 154 Moskito was a fast twin-engined German night fighter aircraft designed by Kurt Tank and produced by Focke-Wulf during late World War II. Only a few were produced, proving to have less impressive performance than the prototypes.

Kurt Tank's team at Focke-Wulf had been working for some time on a fast attack-bomber aircraft named Ta 211, so named because it planned to use an uprated Jumo 211R engine. The intended "Ta 211" design was a high-wing twin-engined design, built primarily of plywood, bonded with a special phenolic resin adhesive called Tego film. The only large-scale use of metal was in the pressurized cockpit. 

The project's designation was changed to Reichsluftfahrtministerium (RLM—Ministry of Aviation) airframe number 8-154 (hence Ta 154) when it became apparent that the most suitable engine for the aircraft was the more powerful Jumo 213, and that Junkers could not deliver the Jumo 211R in time due to technical and production problems. The 154 was also allocated the name "Moskito" as a form of recognition of the Royal Air Force's (RAF) de Havilland Mosquito.

It was at about this time that the light and very fast de Havilland Mosquito, also made of wood, arrived over Germany. It quickly racked up an impressive record; in its first 600 bombing missions, only one was shot down, compared to an average of 5% for RAF medium and heavy bombers. Erhard Milch personally requested a purpose-built German answer, and selected the 154. Infighting within German circles started almost immediately, because the RLM and night fighter units — as well as Ernst Heinkel himself — still wanted the Heinkel He 219. Milch took this personally, and spent the better part of the next two years trying to have the 219 program terminated, partly against Ernst Heinkel's wishes.

The Fokker D.XXIII was a Dutch single-seat fighter designed and built by Fokker. Only one aircraft was flown before the country was invaded by the Germans in May 1940.

The Fokker D.XXIII was designed as a twin-engined single-seat aircraft. To overcome the problems of asymmetric flight it had a tractor engine at the front and a pusher engine at the rear. The D.XXIII was a cantilever monoplane with the twin tail units on booms. The pilot had an enclosed cockpit in between the tractor and pusher engines and it had a retractable tricycle landing gear.

The prototype first flew on 30 May 1939 powered by two Walter Sagitta I-SR air cooled vee piston engines. The trial flights identified problems with the cooling of the rear engine and general engine performance. It was proposed to use Rolls-Royce or Daimler-Benz engines in the production aircraft. Concerns were also raised about the pilot clearing the rear propeller if he had to bail out and an ejector seat was studied. As a provisional solution, rails were put on both sides of the forward fuselage for the Fokker test pilot, Gerben Sonderman, to use to bail out in an emergency. The aircraft was flown 11 times for a total flight time of less than four hours. The rear fuselage paneling was modified significantly before the last few flights in an attempt to address chronic rear engine cooling problems. On the 11th flight in April, the undercarriage was damaged, and the programme was abandoned in May 1940 when the German forces invaded the Netherlands.

The Fokker G.I was a Dutch twin-engined heavy fighter aircraft comparable in size and role to the German Messerschmitt Bf 110. Although in production prior to World War II, its combat introduction came at a time the Netherlands were overrun by the Germans. The few G.Is that were mustered into service were able to score several victories. Some were captured intact after the Germans had occupied the Netherlands. The remainder of the production run was taken over by the Luftwaffe for use as trainers.

The G.I, given the nickname le Faucheur ("The Reaper" in French), was designed as a private venture in 1936 by Fokker chief engineer Dr. Schatzki. Intended for the role of jachtkruiser, "heavy" fighter or air cruiser, able to gain air superiority over the battlefield as well as being a bomber destroyer, the G.1 would fulfill a role seen as important at the time, by advocates of Giulio Douhet's theories on air power. The Fokker G.I utilized a twin-engined, twin-boom layout that featured a central nacelle housing two or three crew members (a pilot, radio operator/navigator/rear gunner or a bombardier) as well as a formidable armament of twin 23 mm (.91 in) Madsen cannon and a pair of 7.9 mm (.31 in) machine guns (later eight machine guns) in the nose and one in a rear turret.

Besides its main mission, the G.1 could be configured for ground attack and light bombing missions (it could carry a bomb load of one 400 kg/882 lb bomb or combinations of two 200 kg/441 lb or 10 26 kg/57 lb bombs).

The design and construction of the prototype (registered as X-2) was completed in just seven months. At its introduction at the Paris Air Show in November 1936, even before its first flight, the G.I was a sensation, appearing in a purple and yellow finish (evocative of the Spanish Republican colors, thought to be Fokker's first export customer).

Like all Fokker aircraft of the period, the G.I was of mixed construction; the front of the central pod were built around a welded frame, covered with aluminium plating. The back of the central pod, however, as well as the wings, were completely constructed with wood.

The G.I prototype, powered by 485 kW (650 hp) Hispano-Suiza 14AB-02/03 engines, had its first flight at Welschap Airfield, near Eindhoven on 16 March 1937 with Karel Mares at the controls. Later, Emil Meinecke took over much of the test flights. The maiden flight went well, but a subsequent test flight in September 1937 ended with a supercharger explosion that nearly caused the loss of the prototype. The accident prompted a replacement of the Hispano-Suiza engines with 559 kW (750 hp) Pratt & Whitney SB4-G Twin Wasp Junior engines.

For details of operational history and variants, click here.

Envisioned as an affordable light fighter in contrast to the rising cost and size of typical combat aircraft, it was procured as a trainer aircraft for the Royal Air Force (RAF) as well as by export customers, who used the Gnat in both combat and training capacities.

Although never used as a fighter by the Royal Air Force (RAF), the Gnat T.1 jet trainer variant was adopted and operated for some time. In the United Kingdom, the Gnat became well known due to its prominent use as the display aircraft of the RAF's Red Arrows aerobatic team. The Gnat F.1 was exported to Finland, Yugoslavia and India. The Indian Air Force became the largest operator and eventually manufactured the aircraft under licence.

The Gnat offered advantages over conventional fighter aircraft in terms of cost, man-hours, handling, serviceability, and portability. Its tricycle landing gear let it operate from austere grass airstrips, thanks to the aircraft's low weight.

The Gnat design used a conventional metal stressed-skin structure, with extensive flush-rivetting. To reduce workload and cost, intensive fabrication methods such as machining, forging, and casting were minimised. The airframe could be constructed using simple jigs without any specialised skills or tooling.[4] The wing (for example) could be produced at a quarter of the cost, with less than one-fifth the labour, required for the wings of other contemporary fighter aircraft. Similarly, the layout and construction techniques used allow the airframe to be rapidly disassembled into its major subsections, without the use of cranes or ladders; the Gnat was vastly easier to service than most other aircraft.

For details of development, operational history and variants, click here.

Specifications below are for the F.1 export fighter variant.

The Fouga CM.10 was an assault glider designed for the French Army shortly after World War II, capable of carrying 35 troops, later converted as a powered transport.

The CM.10 was a high-wing cantilever monoplane of conventional configuration with fixed tricycle undercarriage. Flight trials with the glider prototypes were of mixed results with the first prototype crashing on 5 May 1948 whilst being flown by CEV Brétigny. A production order for 100 was placed with Fouga, but cancelled after only 5 gliders had been built.

CM.100   (Specifications below)

Undaunted, Fouga adapted the design as an airliner, adding two SNECMA 12S piston engines. Two of the production CM.10 gliders were converted to the powered version, CM.100-01, the first prototype (registration F-WFAV), was first flown on 19 January 1949, but no order resulted for this aircraft. It was later tested with Turbomeca Piméné turbojets mounted on the wingtips as the CM.101R-01. The second aircraft, which was converted as CM.101R-02, (registration F-WFAV), was first flown on 23 Aug 1951.

Due to industrial mergers, the aircraft has been variously known as the Fouga CM.170 Magister, Potez (Fouga) CM.170 Magister, Sud Aviation (Fouga) CM.170 Magister and Aérospatiale (Fouga) CM.170 Magister, depending on where and when they were built.

In 1948, development commenced at Fouga on a new primary trainer aircraft design that harnessed newly developed jet propulsion technology. The initial design was evaluated by the French Air Force (Armée de l'Air, AdA) and, in response to its determination that the aircraft lacked sufficient power for its requirements, was enlarged and adopted a pair of Turbomeca Marboré turbojet engines. First flying on 23 July 1952, the first production order for the type was received on 13 January 1954. Export orders for the Magister were received, which included arrangements to produce the type under license in West Germany, Finland and Israel. In addition, the related CM.175 Zéphyr was a carrier-capable version developed and produced for the French Navy.

While primarily operated as a trainer aircraft, the Magister was also frequently used in combat as a close air support platform by various operators. In the latter capacity, it saw action during the Six-Day War, the Salvadoran Civil War, the Western Sahara War, and the Congo Crisis. In French service, the Magister was eventually replaced by the Dassault/Dornier Alpha Jet. After its retirement by the French Air Force, Magisters were purchased by several private-owner pilots in the US and have since been operated in the experimental category.

The Fouga CM.170 Magister was developed to perform both basic and intermediate training activities. It is a compact, tandem seat aircraft with performance akin to larger, more powerful aircraft. Comparatively, it was a higher performance aircraft than the rival British-built BAC Jet Provost, and was considered by the Aviation magazine Flight International to be comparable to Fokker S.14 Machtrainer. It featured a distinctive butterfly tail configuration; a conventional tail was tried but found to be aerodynamically inferior at higher speeds. A keel fitted under the rear fuselage functions to reduce the negative dihedral effect of the butterfly tail during rudder applications.

The Magister was powered by a pair of Turbomeca Marbore turbojet engines, which provided 880 lb of thrust each; it was promoted as offering "twin-engine safety with single-engined flying characteristics". The two engines, which were placed close to the centre line, produced very little asymmetric thrust as a consequence; this was viewed as a valuable safety feature for a trainer aircraft. While viewed as an uncommon instance, in the event of a single-engine flameout the relighting procedure was relatively quick and easy to perform. The rate of acceleration and rate of climb were less than contemporary frontline jet fighters, such as the de Havilland Vampire and Gloster Meteor, but was in excess of many of the previous generation of piston-engined trainer aircraft. The engines shared a common fuel system, but had independent oil systems; for extended range, tip tanks were provided as standard equipment.

For more details of the development, design, operational history and variants, click here.

The XCG-16 was a military transport/assault glider ordered by the United States Army Air Forces (USAAF), from General Airborne Transport Co., for competition against the Waco CG-13A at Wright Field. The XCG-16’s preferred tow aircraft was the Lockheed Model 18 Lodestar.

Design of the CG-16 evolved from the lifting fuselage theories of Vincent Burnelli laid out in U.S. Patent No. 1,758,498, issued on 13 May 1930, which advocated the use of "lifting fuselages" providing a high proportion of the total lift. To enter a competition at Wright Field for a new assault glider for the USAAF, Hawley Bowlus and Albert Criz designed a Burnelli style lifting fuselage assault glider as the Bowlus-Criz MC-1.

To prove the concept and aerodynamic qualities Bowlus designed a 1:2 scale prototype, which flew successfully. The flight tests of the 1:2 scale MC-1 maintained confidence in the full-sized glider.

A contract for three MC-1 gliders, two flyable and one for static testing, was given to the Airborne and General aircraft company, which had been formed by Bowlus and Criz. This company soon transformed into the General Airborne Transport company, which built the full sized MC-1 gliders with the military designation XCG-16.

Flight tests of the full sized MC-1, registered to the Albert Criz company on 19 July 1943 as NX21757, commenced at March Field, California, on 11 September 1943, but tragedy struck on a demonstration flight with Richard Chichester du Pont, special assistant to Gen. Hap Arnold; Col. Ernest Gabel, another glider specialist on the staff of the Chief of Staff of the Air Force, and C. C. Chandler, thrice soaring champion aboard. Inadequately secured ballast came loose when the glider flew through the Lockheed C-60 tow plane's propwash, causing a catastrophic rearward shift in the center of gravity. The now uncontrollable MC-1A released from tow and entered an unrecoverable flat spin. Three of the crew and passengers jumped out, but only two survived the parachute jump.

In spite of all the design problems and the MC-1 crash, a contract was approved on 13 November 1943 for two test flight articles and one static test article of the MC-1 glider designated as the USAAF XCG-16. Only one XCG-16, (44-76193), was manufactured and tested, demonstrating good flying qualities, but major issues with military equipment and procedures precluded the CG-16 from a production contract, as it did not meet military expectations as a combat glider. The contract for all remaining work on the CG-16 was cancelled on 30 November 1944.

Variants

Bowlus-Criz MC-1 half-scale
A flying 1:2 scale model of the MC-1/XCG-16. Successful flight trials proved the aerodynamic qualities of the MC-1. After completion of CG-16 related flying the 1:2 scale MC-1 was converted to a flying wing by Don Mitchell, one of Hawley Bowlus' friends and a colleague at Bowlus Sailplanes.
Airborne and General MC-1
The full-scale civilian prototype of the CG-16, destroyed on its second flight during a demonstration flight.
General Airborne Transport XCG-16
Three prototypes of the military XCG-16 were ordered, but only one was completed as 44-76193. Trials revealed major deficiencies in the ability of the CG-16 to fulfill the intended mission, despite good flying qualities.

The General Aircraft Limited GAL.49 Hamilcar or Hamilcar Mark I was a large British military glider produced during the Second World War, which was designed to carry heavy cargo, such as the Tetrarch or M22 Locust light tank. When the British airborne establishment was formed in 1940 by the order of Prime Minister Winston Churchill it was decided to develop a large glider which would be able to transport heavy equipment in support of airborne troops. General Aircraft Limited were chosen in January 1941 to develop this glider, which they designated the GAL.49 'Hamilcar'. It was designed to transport a light tank or two Universal Carriers. A number of problems, which included vacillation by the War Office on the number of gliders it wanted and poor management by GAL, led to delays in the production of the Hamilcar and it was not until mid-1943 that the first production glider was assembled. These problems were only partially solved and production of the glider continued to be slow, hampered by difficulties in finding suitable locations to store and construct them once their parts were produced. A total of 344 Hamilcars had been built when production ended in 1946.

Hamilcars were used on three occasions,and only in support of British airborne forces. They first saw action in June 1944, when approximately thirty were used to carry Ordnance QF 17 pounder anti-tank guns, transport vehicles and Tetrarch light tanks into Normandy in support of British airborne forces during Operation Tonga. In September 1944 a similar number of Hamilcars were used to transport anti-tank guns, transport vehicles and supplies for airborne troops as part of Operation Market Garden. They were used a third and final time in March 1945 during Operation Varsity when they transported M22 Locust light tanks and other supplies. The gliders proved to be successful in all three operations, although their slow speed and large size made them easy targets for anti-aircraft fire, which resulted in a number of gliders being damaged or destroyed. A powered variant of the Hamilcar was produced, the Hamilcar Mark X, to extend the range of the Hamilcar so it could serve in the Pacific War; the conflict in the Pacific ended before the design could see combat.

The Hamilcar was constructed primarily from wood, mainly birch and spruce, with fabric-covered plywood forming the skin, and high grade steel reinforcement beams in critical areas. It had a wingspan of 110 feet (34 m), a length of 68 feet (21 m) and a height of 20 feet (6.1 m) to the top of the fin with the tail down. It weighed 18,400 pounds (8,300 kg) when empty, and could transport a military load of 17,600 pounds (8,000 kg) to give a total weight of 36,000 pounds (16,000 kg). The whole aircraft was broken down into smaller sections for transport. It was so large and heavy that it required the largest and most powerful aircraft to pull it off the airfield and subsequently tow it; four-engined bombers were used, most frequently the Handley Page Halifax. Both wing and cockpit were set above the fuselage to provide the greatest amount of room for the cargo compartment, and to ensure that they did not interfere with the loading of vehicles; the compartment measured approximately 32 feet 31.5 inches (10.554 m), 7 feet 10.5 inches (2.400 m) inches wide and between 6 feet (1.8 m) and 7 feet 7 inches (2.31 m) inches in height. The nose of the glider was hinged and opened to the side for ease of loading vehicles and cargo, and the crew of two pilots were seated in tandem in a cockpit on the top of the fuselage, which was accessed via an internal ladder and was fifteen feet above ground; they were eventually protected by a bullet-proof windscreen and a plate of armour behind the second pilot. An intercom was also added to provide communication between the pilots and the personnel below them. An initial design feature, which was eventually removed prior to full-scale production, was the installation of an under-fuselage hatch which would allow the prone firing of a Bren light machine gun as the glider approached the landing zone.

When the parts for a Hamilcar were completed and the glider was erected, it was flown to RAF North Luffenham in Rutland to have its specific cargo placed on board, and it was then flown to RAF Tarrant Rushton, which had been selected as the Hamilcar training and operational base in November 1943. It was not possible to tow the glider empty, so any empty gliders usually carried Universal Carriers or concrete blocks as ballast.

For more information on the development, design, operational history and variants of the Hamilcar, click here.

The Gloster Gladiator was a British-built biplane fighter. It was used by the Royal Air Force (RAF) and the Fleet Air Arm (FAA) (as the Sea Gladiator variant) and was exported to a number of other air forces during the late 1930s.

Developed privately as the Gloster SS.37, it was the RAF's last biplane fighter aircraft and was rendered obsolete by newer monoplane designs even as it was being introduced. Though often pitted against more formidable foes during the early days of the Second World War, it acquitted itself reasonably well in combat.

The Gladiator saw action in almost all theatres during the Second World War, with a large number of air forces, some of them on the Axis side. The RAF used it in France, Norway, Greece, the defence of Malta, the Middle East, and the brief Anglo-Iraqi War (during which the Royal Iraqi Air Force was similarly equipped). Other countries deploying the Gladiator included China against Japan, beginning in 1938; Finland (along with Swedish volunteers) against the Soviet Union in the Winter War and the Continuation War; Sweden as a neutral non-combatant (although Swedish volunteers fought for Finland against USSR as stated above); and Norway, Belgium, and Greece resisting Axis invasion of their respective lands.

The South African pilot Marmaduke "Pat" Pattle was the top Gladiator ace with 15 victories with the type.

Quotation

Those old Gladiators aren't made of stressed steel like a Hurricane or a Spit. They have taut canvas wings, covered with magnificently inflammable dope, and underneath there are hundreds of small thin sticks, the kind you put under the logs for kindling, only these are drier and thinner. If a clever man said, 'I am going to build a big thing that will burn better and quicker than anything else in the world,' and if he applied himself diligently to his task, he would probably finish up by building something very like a Gladiator.

— Roald Dahl, "A Piece of Cake", from the short story collection The Wonderful Story of Henry Sugar

For extensive details on the development and design, and the vast operational history of the Gladiator, 

click here.

The Gloster Grebe was developed by the Gloster Aircraft Company from the Gloster Grouse (an experimental aircraft later developed as a trainer), and was the Royal Air Force's first post-First World War fighter aircraft, entering service in 1923.

In 1923, Gloster modified a Gloster Sparrowhawk fighter trainer with new wings to test a layout proposed by chief designer Henry Folland, combining a thick, high-lift section upper wing and a thinner, medium-lift lower wing, with the intention of combining high lift for takeoff with low drag. After the Grouse demonstrated that the new layout was a success, the British Air Ministry placed an order for three prototype fighters based on the Grouse (and therefore derived ultimately from Folland's Nieuport Nighthawk fighter of 1919), but powered by a 350 horsepower (260 kW) Armstrong Siddeley Jaguar III radial engine, as the "Nighthawk (thick-winged)".

The first of the prototypes (Gloster built a fourth machine as a company-owned demonstrator), by now known as the Grebe I, flew during May 1923. The performance of these prototypes during testing at RAF Martlesham Heath was good, and the Air Ministry decided to order the type into production as the Grebe II, this having a 400 horsepower (300 kW) Jaguar IV engine.

Like the Sopwith Snipe it replaced, the Grebe was a single-seat, single-engined biplane of fabric-covered wood construction. The fuselage had ash longerons and spruce stringers joined to plywood formers, while the single-bay wings (which had a considerable overhang outboard of the struts), had fabric-covered spruce spars and ribs. Two synchronised .303 in (7.7 mm) Vickers machine guns were mounted on the fuselage top decking.

Variants

Gloster Grouse
Experimental aircraft.
Grebe Mk I
Single-seat fighter prototype, 4 built.
Grebe Mk II    (Specifications below)
Production single-seat fighter variant with a 400 hp Armstrong Siddeley Jaguar IV engine, oleo-type landing gear and other modifications, 129 built.
Grebe (Dual)
Following a trial modification to Grebe II J7519 a small number of the Grebe II production aircraft were completed as two-seat training aircraft in 1925.

The Meteor's development was heavily reliant on its ground-breaking turbojet engines, pioneered by Sir Frank Whittle and his company, Power Jets Ltd. Development of the aircraft began in 1940, although work on the engines had been under way since 1936. The Meteor first flew in 1943 and commenced operations on 27 July 1944 with No. 616 Squadron RAF. The Meteor was not a sophisticated aircraft in its aerodynamics, but proved to be a successful combat fighter. Gloster's 1946 civil Meteor F.4 demonstrator G-AIDC was the first civilian-registered jet aircraft in the world.

Meteors of the Royal Australian Air Force (RAAF) fought in the Korean War. Several other operators such as Argentina, Egypt and Israel flew Meteors in later regional conflicts. Specialised variants of the Meteor were developed for use in photographic aerial reconnaissance and as night fighters.

For the full Meteor story, click here.

The Grumman F2F was a single-engine, biplane fighter aircraft with retractable undercarriage, serving as the standard fighter for the United States Navy between 1936 and 1940. It was designed for both carrier- and land-based operations.

Grumman's success with the two-seat FF-1, which was significantly faster than even the single-seat fighters of its time, resulted in a contract for the single-seat XF2F-1. Armed with two 0.30 in (7.62 mm) machine guns above the cowl, the new design also incorporated watertight compartments to reduce weight and improve survivability in the event of a water landing. The prototype first flew on 18 October 1933, equipped with the experimental 625 hp (466 kW) XR-1534-44 Twin Wasp Junior radial engine, and reached a top speed of 229 mph (369 km/h) at 8,400 ft (2,600 m) – 22 mph (35 km/h) faster than the FF-1 at the same altitude. Maneuverability also proved superior to the earlier two-seat aircraft.

The Navy ordered 54 F2F-1 fighters on 17 May 1934, with the first aircraft delivered 19 January 1935.[citation needed] One additional aircraft (BuNo 9997) was ordered to replace one which crashed on 16 March 1935, bringing the total to 55, with the final F2F-1 delivered on 2 August 1935.[citation needed] The F2F-1 had a relatively long service life for the time, serving in front-line squadrons from 1935 to late 1939, when squadrons began to receive the F3F-3 as a replacement. By September 1940, the F2F had been completely replaced in fighter squadrons and was relegated to training and utility duties. The last F2F-1s were stricken from the list of naval aircraft in early 1943.

Variants

XF2F-1
United States Navy designation for the Grumman Model G-8 prototype with a 625 hp (466 kW) XR-1534-44 Twin Wasp Junior radial engine, one built
F2F-1
Production variant with a 700 hp (522 kW) R-1535-72 Twin Wasp Junior radial engine, 55 built.

The Grumman F4F Wildcat is an American carrier-based fighter aircraft that entered service in 1940 with the United States Navy, and the British Royal Navy where it was initially known as the Martlet. First used by the British in the North Atlantic, the Wildcat was the only effective fighter available to the United States Navy and Marine Corps in the Pacific Theater during the early part of the Second World War. The disappointing Brewster Buffalo was withdrawn in favor of the Wildcat and replaced as aircraft became available.

With a top speed of 318 mph (512 km/h), the Wildcat was outperformed by the faster 331 mph (533 km/h), more maneuverable, and longer-ranged Mitsubishi A6M Zero. US Navy pilots, including John "Jimmy" Thach, a pioneer of fighter tactics to deal with the A6M Zero, were greatly dissatisfied with the Wildcat's inferior performance against the Zero in the battles of the Coral Sea and Midway. The Wildcat has a claimed air combat kill-to-loss ratio of 5.9:1 in 1942 and 6.9:1 for the war.

Lessons learned from the Wildcat were later applied to the faster F6F Hellcat. While the Wildcat had better range and maneuverability at low speed, the Hellcat could rely on superior power and high speed performance to outperform the Zero. Wildcat production continued throughout the remainder of the war, with Wildcats serving on escort carriers, where the larger and much heavier Hellcat could not be used.

Grumman fighter development began with the two-seat Grumman FF biplane. The FF was the first U.S. naval fighter with a retractable landing gear. The wheels retracted into the fuselage, leaving the tires visibly exposed, flush with the sides of the fuselage. Two single-seat biplane designs followed, the F2F and F3F, which established the general fuselage outlines of what would become the F4F Wildcat. In 1935, while the F3F was still undergoing flight testing, Grumman started work on its next biplane fighter, the G-16. At the time, the U.S. Navy favored a monoplane design, the Brewster F2A-1, ordering production early in 1936. However, an order was also placed for Grumman's G-16 (given the navy designation XF4F-1) as a backup in case the Brewster monoplane proved to be unsatisfactory.

It was clear to Grumman that the XF4F-1 would be inferior to the Brewster monoplane, so Grumman abandoned the XF4F-1, designing instead a new monoplane fighter, the XF4F-2. The XF4F-2 would retain the same, fuselage-mounted, hand-cranked main landing gear as the F3F, with its relatively narrow track. The unusual manually-retractable main landing gear design for all of Grumman's U.S. Navy fighters up to and through the F4F, as well as for the amphibious Grumman J2F utility biplane, was originally created in the 1920s by Leroy Grumman for Grover Loening. Landing accidents caused by failure of the main gear to fully lock into place were distressingly common.

Note: All photos show the RN Marlett variant.

For more details on development, operational history and 15 variants, click here.

The Grumman F6F Hellcat is an American carrier-based fighter aircraft of World War II. Designed to replace the earlier F4F Wildcat and to counter the Japanese Mitsubishi A6M Zero, it was the United States Navy's dominant fighter in the second half of the Pacific War, outdueling the faster Vought F4U Corsair, which had problems with carrier landings.

Powered by a 2,000 hp (1,500 kW) Pratt & Whitney R-2800 Double Wasp, the same powerplant used for both the Corsair and the United States Army Air Forces (USAAF) Republic P-47 Thunderbolt fighters, the F6F was an entirely new design, but it still resembled the Wildcat in many ways. Some military observers tagged the Hellcat as the "Wildcat's big brother".

The F6F made its combat debut in September 1943, and was best known for its role as a rugged, well-designed carrier fighter, which was able to outperform the A6M Zero and help secure air superiority over the Pacific theater. In total, 12,275 were built in just over two years.

Hellcats were credited with destroying a total of 5,223 enemy aircraft while in service with the U.S. Navy, U.S. Marine Corps, and Royal Navy Fleet Air Arm. This was more than any other Allied naval aircraft. After the war, Hellcats were phased out of front-line service in the US, but radar-equipped F6F-5Ns remained in service as late as 1954 as night fighters.

For details of developmment and design, operational history, the 5 prototypes and 9 variants, click here.

The Grumman F7F Tigercat is a heavy fighter aircraft that served with the United States Navy (USN) and United States Marine Corps (USMC) from late in World War II until 1954. It was the first twin-engine fighter to be deployed by the USN. While the Tigercat was delivered too late to see combat in World War II, it saw action as a night fighter and attack aircraft during the Korean War. 

Designed initially for service on Midway-class aircraft carriers, early production F7Fs were land-based variants. The type was too large to operate from older and smaller carriers, and only a late variant (F7F-4N) was certified for carrier service.

Based on the earlier Grumman XP-50 that was eventually canceled, the company developed the XP-65 (Model 51) further for a future "convoy fighter" concept. In 1943, work on the XP-65 was terminated in favor of the design that would eventually become the F7F. The contract for the prototype XF7F-1 was signed on 30 June 1941. Grumman's aim was to produce a fighter that outperformed and outgunned all existing fighter aircraft, and that had an auxiliary ground attack capability.

Performance of the prototype and initial production aircraft met expectations; the F7F was one of the fastest piston-engine fighters, with a top speed significantly greater than single-engine USN aircraft — 71 mph faster than a Grumman F6F Hellcat at sea level. Captain Fred Trapnell, one of the premier USN test pilots of the era, stated: "It's the best damn fighter I've ever flown." The F7F was to be heavily-armed — four 20 mm cannon and four 50 caliber (0.50 in; 12.7 mm) machine guns, as well as underwing and under-fuselage hardpoints for bombs and torpedoes. This speed and firepower was bought at the cost of heavy weight and a high landing speed, but what caused the aircraft to fail carrier suitability trials was poor directional stability with only one engine operational, as well as problems with the tailhook design. The initial production series was, therefore, used only from land bases by the USMC, as night fighters with APS-6 radar.  

While the F7F was initially also known as the Grumman Tomcat, this name was abandoned, because it was considered at the time to have excessively sexual overtones; (from the 1970s, the name Tomcat became commonly associated with, and officially used by the Navy for, another Grumman design, the F-14 twin-jet carrier-based interceptor). The first production variant was the single-seat F7F-1N aircraft; after the 34th production aircraft, a second seat for a radar operator was added and these aircraft were designated F7F-2N.

A second production version, the F7F-3, was modified to correct the issues that caused the aircraft to fail carrier acceptance, and this version was again trialled on the USS Shangri-La. A wing failure on a heavy landing caused the failure of this carrier qualification as well. F7F-3 aircraft were produced in day fighter, night fighter, and photo-reconnaissance versions.

The final production version, the F7F-4N, was extensively rebuilt for additional strength and stability, and did pass carrier qualification, but only 12 were built.

For operational history and variants, click here.

It served during the mid-20th century in the United States Navy, the United States Marine Corps, and the air forces of other nations. It was Grumman Aircraft's last piston engined fighter aircraft.

Modified versions of the Bearcat have broken speed records for piston-engined aircraft. Today, the Bearcat is popular among warbird owners and air racers.

In 1943, Grumman was in the process of introducing the F6F Hellcat, powered by the Pratt & Whitney R-2800 engine which provided 2,000 horsepower (1,500 kW). The R-2800 was the most powerful American engine available at that time, so it would be retained for the G-58. This meant that improved performance would have to come from a lighter airframe.

To meet this goal, the Bearcat's fuselage was about 5 feet (1.5 m) shorter than the Hellcat, and was cut down vertically behind the cockpit area. This allowed the use of a bubble canopy, the first to be fitted to a US Navy fighter. The vertical stabilizer was the same height as the Hellcat's, but increased aspect ratio, giving it a thinner look. The wingspan was 7 feet less than the Hellcat's. Structurally the fuselage used flush riveting as well as spot welding, with a heavy gauge 302W aluminum alloy skin suitable for carrier landings. Armor protection was provided for the pilot, engine and oil cooler.

The Hellcat used a 13 ft 1 in three-bladed Hamilton Standard propeller. A slight reduction in size was made by moving to a 12 ft 7 in Aeroproducts four-bladed propeller. Keeping the prop clear of the deck required long landing gear, which, combined with the shortened fuselage, gave the Bearcat a significant "nose-up" profile on land. The hydraulically operated undercarriage used an articulated trunnion which extended the length of the oleo legs when lowered; as the undercarriage retracted the legs were shortened, enabling them to fit into a wheel well which was entirely in the wing. An additional benefit of the inward retracting units was a wide track, which helped counter propeller torque on takeoff and gave the F8F good ground and carrier deck handling.

For more details of the development, design,operational history and 18 variants, click here.

The Grumman F9F Panther is one of the United States Navy's first successful carrier-based jet fighters, as well as Grumman’s first jet fighter. A single-engined, straight-winged day fighter, it was armed with four 20 mm (0.79 in) cannons and could carry a wide assortment of air-to-ground munitions.

The Panther was used extensively by the U.S. Navy and Marine Corps in the Korean War. It was also the first jet aircraft used by the Blue Angels aerobatics demonstration team, from 1949 through late 1954. The aircraft was exported to Argentina and was the first jet used by the Argentine Naval Aviation.

Total F9F production was 1,382. The design evolved into the swept wing Grumman F-9 Cougar.

Development studies at Grumman for jet-powered fighter aircraft began near the end of World War II as the first jet engines emerged. In a competition for a jet-powered night fighter for the United States Navy, on 3 April 1946 the Douglas F3D Skyknight was selected over Grumman's G-75, a two-seater powered by four Westinghouse J30s. The Navy's Bureau of Aeronautics (BuAer) also issued a contract to Grumman for two G-75 prototype aircraft on 11 April 1946, being given the Navy designation XF9F-1, in case the Skyknight ran into problems.

Grumman soon realized the G-75 was a dead end, but had been working on a completely different, single-engine day fighter, the G-79. In a bureaucratic maneuver, BuAer did not cancel the G-75 contract, but changed the wording to include three prototypes of the entirely different G-79. It became the Panther.

For more details of development, operational history in US and Argentinian navies, and 12 variants, click here.

The Douglas TBD Devastator, the U.S. Navy's main torpedo bomber introduced in 1935, was obsolete by 1939. Bids were accepted from several companies, but Grumman's TBF design was selected as the replacement for the TBD and in April 1940 two prototypes were ordered by the Navy. Designed by Leroy Grumman, the first prototype was called the XTBF-1. It was first flown on 7 August 1941. Although one of the first two prototypes crashed near Brentwood, New York, rapid production continued.

The Avenger was the heaviest single-engined aircraft of World War II, and only the USAAF's P-47 Thunderbolt came close to equalling it in maximum loaded weight among all single-engined fighters, being only some 400 pounds (180 kg) lighter than the TBF, by the end of World War II. To ease carrier storage concerns, simultaneously with the F4F-4 model of its Wildcat carrier fighter, Grumman designed the Avenger to also use the new Sto-Wing patented "compound angle" wing-folding mechanism, intended to maximize storage space on an aircraft carrier; the Wildcat's replacement the F6F Hellcat also employed this mechanism. The engine used was the twin-row Wright R-2600-20 Twin Cyclone fourteen-cylinder radial engine, which produced 1,900 horsepower (1,420 kW).

Primary users:   United States Navy, Royal Navy, Royal Canadian Navy, Royal New Zealand Air Force. Total Number Built:      9,839.

For more information on design and development, operational history and variants, click here.