Bell p-39 Airacobra V12 Engine

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Uploaded by on Sep 10, 2011

Bell P-39 Airacobra V12 Engine at Fort Nelson Museum. My video says Rolls Royce, but this the Allison V-1710, the only American designed V12 for aircraft in WW2

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  • But when used as a close support, ground attack aircraft, the Airacobra shone, the Russians used them by the thousands as anti-tank aircraft. The Allison worked fine at low level and made the Cobra faster than the feared Focke-Wulf FW 190.

  • The Allison V-1710 was never a satisfactory engine, it had a limited service ceiling and trouble with synchronizing with the supercharger. NACA (Which late became NASA) actually advised the USAAF to not put a turbosupercharger on the Bell P-39 in believe that a more advanced version of the V-1710 was in the latest stages of development. But it took three years before that version was ready: the result was that the Airacobra became a severely under powered plane unfit for air combat.

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