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Summary: Bell P-39 Airacobra aircraft Airplane blueprint for the Bell, P-39, Airacobra ... Aviation history and aircraft blueprints/plans. Bell P-39D Aircobra - Unique in its design and power plant the P-39 Air Cobra was the first US Army fighter to be fitted with a try-cycle type landing gear. These features were imposed by a desire at the time of the middle and late 1930s to mount heavy armament in the nose.
The first large order for 369 P-39Ds was placed in September 1940, and the initial deliveries of these began several months later. A total of 675 aircraft ordered by a British purchasing commission were exported to Great Britain arriving in April of 1941. These differed only in armament as the 37-mm cannon was replaces with a 20-mm, and the six-.30-cal. Machine guns were replaced by 0.303-in caliber. In September that year No. 601 squadron exchanged its Hawker Hurricanes for these new aircraft. Immediately they were introduced into service, the full implication of the decision to delete the turbo charger was appreciated for the first time, for the aircraft had an inadequate rate of climb and its high altitude performance was completely unacceptable for deployment in the European theatre. Only about 80 of the total order entered service with the RAF, equipping only No. 601 Squadron, which exchanged them for Super Marine Spitfires in March of 1942. A total of 250 aircraft were supplied to Russia, 200 to the USAAF in Britain and the remainder back to the USAAF in America.
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