Cause this model received responses, please read this notice. I’ve not made this model and, I uploaded it under author acceptance. The original author has not created an account on sketchfab, so I decided to promote his creations. Thank you for understand. (ErtYwek 2020)
This aircraft was a “second chance” adaptation of P-36 (Curtiss Hawk 75) to the V12 liquid-cooled Allison V-1710 engine. They created it after the failure of more ambitious P-37 project. The P-37 had a turbo supercharger, which did not work well. P-40 used simple, one-stage mechanical supercharger, delivered by the Allison together with the engine. It was not as good, as the two-stage supercharger in British Merlin. Allison engineers created it as an additional stage after the turbo supercharger. Lockheed used, with a success, such configuration in P-38 Lightning. Using this device alone, Allison engine in P-40 was quickly losing its power above 15000 ft. http://forurl.co/blendp40b
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