PropsRule wrote:
You answered my question, thank you for that! I always thought four bladed propellers automatically meant it was a P-63, but I noticed the aircraft in the photo had the P-39 style vertical stabilizer. I was wondering what type they were, but now I know...P-39'Q'.
Both -21 and -25 of the P-39Q series mounted four-bladed Aeroproducts props. Most went to the Russian VVS; a lesser number provided to the French.
Overall, it would seem that the four-bladed experience was not an overwhelming success story for the P-39.