With its almost unique configuration, the Bell P-39 Airacobra was an unmistakable shape in the sky. Somewhat unloved in its original guise, it was to find its true value in the hands of the Russians, who used them to great effect in their struggle to repel German advances. Initially seen as heavy and cumbersome with difficult handling qualities, later versions were greatly improved and the design led to the P-63 Kingcobra, which again gave sterling service to the Soviets. Together, they comprised the most successful fixed-wing aircraft ever produced by Bell. Although its mid-engine placement was innovative, the Airacobra was ultimately unable to compete with its rivals at high altitude, limiting it to low level duties. This did not deter the Russians, who preferred to use the majority of their aircraft as 'flying artillery', defending the skies while concentrating their attacks on German ground movements. At this, the P-39 proved a capable and popular machine, as did its successor.
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