Many thanks for everybody's answers...
Quote:
Originally Posted by Jens
But these are bad perfomances, a Yak-9D run ~540 @ SL and a Yak-3 567 @ SL. Even a Yak-7B with PF2 was faster.
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An so did late series LaGG-3s.
Indeed, It doesn't seem very high, I wonder whether the example tested was a M-105PF or M-105PF2-engined one...
Anyway, the Yak-9U had better aerodynamics, even with a M-105 engine, it would probably have been a better solution, I wonder whether they didn't produce it more because of industrial problems or lack of metals, or because they were simply waiting for the VK-107...