The Bell P-63 Kingcobra (Model 24) was a United States fighter aircraft developed in World War II from the Bell P-39 Airacobra in an attempt to correct that aircraft's deficiencies. Although the aircraft was not accepted for combat use by the United States Army Air Forces, it was successfully adopted by the Voienno Vosduscni Sili (VVS-Soviet Air Force).
Deliveries of production P-63As began in October 1943. The USAAF concluded the Kingcobra was inferior to the Mustang, and declined to order larger quantities. American allies, particularly the Soviet Union, had a great need for fighter aircraft, however, and the Soviets were already the largest users of the Airacobra. Therefore, the Kingcobra was ordered into production to be delivered under Lend-Lease. In February 1944, the Soviet government sent a highly experienced test pilot, Andrey G. Kochetkov, and an aviation engineer, Fyodor P. Suprun, to the Bell factories to participate in the development of the first production variant, the P-63A. Initially ignored by Bell engineers, Kochetkov's expert testing of the machine's spin characteristics (which led to airframe buckling) eventually led to a significant Soviet role in the development. After flat spin recovery proved impossible, and upon Kochetkov's making a final recommendation that pilots should bail out upon entering such a spin, he received a commendation from the Irving Parachute Company. The Kingcobras maximum aft CG was moved forward to facilitate recovery from spins.
P-63A-8, SN 269261, was extensively tested at TsAGI in what was then the world's largest wind tunnel. Soviet input was significant. With the Soviet Union being the largest buyer of the aircraft, Bell was quick to implement their suggestions. The vast majority of the changes in the A sub-variants were a direct result of Soviet input, e.g. increased pilot armor and fuselage hardpoint on the A-5, underwing hardpoints and extra fuel tanks on the A-6, etc. The Soviet Union even experimented with ski landing gear for the P-63A-6, but this never reached production. Most significantly, Soviet input resulted in moving the main cannon forward, favorably changing the center of gravity, and increasing its ammo load from 30 to 58 rounds for the A-9 variant. The P-63 had an impressive roll rate, besting the P-47, P-40, N1K2 and P-51 with a rate of 110° per second at 275 mph (443 km/h).
The first version to be supplied in quantity to the USSR was the P-63A-7 with a higher vertical tail, and reinforced wings and fuselage. The fuselage proved to require strengthening, consequently in October 1944, a reinforcement kit for operational P-63s was developed.
Air Transport Command ferry pilots, including U.S. women pilots of the WASP program, picked up the planes at the Bell factory at Niagara Falls, New York, and flew them to Great Falls, Montana and then onward via the Alaska-Siberia Route (ALSIB), through Canada, over Alaska where Russian ferry pilots, many of them women, would take delivery of the aircraft at Nome and fly them to the Soviet Union over the Bering Strait. A total of 2,397 (2,672, according to other sources) such aircraft were delivered to USSR, out of the overall 3,303 production aircraft (72.6%).
By a 1943 agreement, P-63s were disallowed for Soviet use against Germany and were supposed to be concentrated in the Soviet Far East for an eventual attack on Japan. However, there are many unconfirmed reports from both the Soviet and German side that P-63s did indeed see service against the Luftwaffe. Most notably, one of Pokryshkin's pilots reports in his memoirs published in the 1990s that the entire 4th GvIAP was secretly converted to P-63s in 1944, while officially still flying P-39s. One account states they were in action at Königsberg, in Poland and in the final assault on Berlin. There are German reports of P-63s shot down by both fighters and flak. Nevertheless, all Soviet records show nothing but P-39s used against Germany.
In general, official Soviet histories played down the role of Lend-Lease supplied aircraft in favor of local designs, but it is known that the P-63 was a successful ground attack aircraft in Soviet service. The Soviets developed successful group aerial fighting tactics for the Bell fighters and P-39s scored a surprising number of aerial victories over German aircraft, mostly Junkers Ju-87 Stukas and bombers but including many advanced fighters as well. Low ceilings, short missions, good radios, a sealed and warm cockpit and ruggedness contributed to their effectiveness. To pilots who had once flown the tricky Polikarpov I-16, the aerodynamic quirks of the mid-engined aircraft were unimportant. In the Far East, P-63 and P-39 aircraft were used in the Soviet invasion of Manchukoku and northern Korea.
In the Pacific theatre, the Kingcobras flew escort, close air support and ground attack missions. The Soviet P-63s achieved their first air victory on 15 August 1945, when Lejtenant I. F. Miroshnichenko from 17th IAP/190 IAD, shot down a Nakajima Ki-43 Hayabusa Army fighter off the coast of North Korea.
Sufficient aircraft continued in use after the war for them to be given the NATO reporting name of Fred. By 9 May 1945, operational units had still 1,148 Kingcobras on strength.
On 8 October 1950, two USAF F-80Cs from 49 FG breached the USSR's border and attacked Sukhaya Rechka airfield, making two strafing runs before returning to their home base. Although Soviet sources claim the attack was intentional, the pilots claimed it was a result of a navigational error. The airfield belonged to the VVS TOF, but it was occupied by the 821 IAP / 190 IAD. Mostly aircraft of the 1st Squadron of 821 IAP were hit with 12 P-63s damaged, one P-63 burned to the ground while the other damaged aircraft were able to be repaired. No human losses were suffered.
In 1945, 114 later models were delivered to the French Armée de l'Air, but they arrived too late to see service in World War II. They however saw service during the First Indochina War before being replaced in 1951.
(Source: Wikipedia on line)
General characteristics
Crew: 1
Length: 32 ft 8 in (10.0 m)
Wingspan: 38 ft 4 in (11.7 m)
Height: 12 ft 7 in (3.8 m)
Wing area: 248 sq?ft (23 m²)
Empty weight: 6,800 lb (3,100 kg)
Loaded weight: 8,800 lb (4,000 kg)
Max. takeoff weight: 10,700 lb (4,900 kg)
Powerplant: 1 × Allison V-1710-117 liquid-cooled V-12, 1,800 hp (1,340 kW)
Performance
Maximum speed: 410 mph (660 km/h) at 25,000 ft (7,620 m)
Range: 450 mi[35] (725 km)
Ferry range: 2200 mi (3,540 km)
Service ceiling: 43,000 ft (13,100 m)
Rate of climb: 2,500 ft/min (12.7 m/s)
Wing loading: 35.48 lb/sq?ft (173.91 kg/m²)
Power/mass: 0.20 hp/lb (0.34 kW/kg)
Armament
1× 37 mm M4 cannon firing through the propeller hub
4× 0.50 in (12.7mm) M2 Browning machine guns (two in the nose, two in the wings)
1,500 lb (680 kg) bomb load on wing and fuselage.
Based on FS98 Eric Johnson/Bruno Duffort original.
P-39 Panel by Chuck Dome.
All reworked to CFS, with new air file, up-scaled, damage profile, moving parts and new textures by Edmundo Abad, 2012.
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This virtual model represent a P-63A Kingcobra of VVS - Soviet Air Force, with a cyrillic text in the nose, which says that the plane was devoted to Lenin by the people of Vitebsk. (Source: Historia de la aviacion, Edit.Viscontea-Argentina 1980).
I have included new textures, moving parts and damage profile for use with CFS1.
This virtual model is up-scaled to obtain a better view in Combat Flight Simulator.
(for accurate scale in FS98, replace the file P-63a.mdl by P-63a.old.mdl and rename this as P-63a.mdl)
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Installation FS98/CFS
1. Unzip to Temporaly directory "P-63a.zip".
2. Copy "P-63a" folder to X:\CFS\aircraft directory.
