soviet planes and 4.1x...

[gaunt1]

Originally Posted by 1984

and interesting quote with control test of serial la-5fn -

here can be error, but 641 kph at 6000 (prototype had 648 kph) shows what no or it's small error, plus even with 1180 mm rk speed can be around 590 kph, and in fact nothing strange what la-5fn have this speed...

Its definitely a rather big error, because its the performance of an early La-7! According to NII VVS tests, the max speed of the La-5FN varies between 610-626. Anyway, its quite unlikely that the speed of plane "39 210 375" is so much better than later ones, like the "39 210 495" or "39 211 257"

Regarding the weight, I agree, 3320-3340 kg is too much, but in my opinion, it should be between 3300-3320, like all examples in NII VVS tests.