Soviet fighters and 4.12

[gaunt1]

Originally Posted by 1984

if you mean my bad english... well... apart my "sorry" in many posts, i think, even perfect english not help you to understand what i'm write, and not help you to start read the right books before writing, if you really not want do all this...

No, I dont have problems with your english. The problem is that you quote lots from russian pages, and its hard to understand those with google translate.

maybe, you want say your opinion for author, techs and pilots of GIAP personally?

Soviet reports from the fields were often quite exaggerated, mainly due to patriotism. And this "115 hours" is another example of this.

About flight performance data, I think TsAGI reports are the most authentic.

Originally Posted by Woke Up Dead

You have a link to those Polish reports?

Unfortunately no, I read it in an old magazine.

But every source states that average engine life was only 25 hours for the WW2 version. Post war improvements extended the engine life by about 10 hours.
http://en.valka.cz/viewtopic.php/t/54647

Another interesting fact:

...impossibility to use the "combat mode" (3200 rpm, the nominal mode was 3000 rpm) of the engine due to its unreliability.

http://mig3.sovietwarplanes.com/yak3...yak3vk107.html
You can read the same here too:
http://www.kamov.net/russian-aircraft/yakovlev-yak-9p/