Quote:
Originally Posted by Z1024
Junkers allowed max power setting for 30min and MW50 for 10min at a time and La7 pilots were allowed to use max power for 5min.
|
you not right...
m-82a have 5-7 min "forsazh" (in fact, sometimes, pilots used forsazh 10 and more min if this was need and sometimes kill engine, of course
)...
forsazh for m-82a = nominal power m-82f, so la-5f's have good perfomance with 550-560 km/h at SL for good plane and without any really hard time limits (in tests F have some problems with cooling cylinders, but if you see "problems", this not mean problems not solved)...
m-82fn can work on forsazh 10-15 min - this have in ALL la-5fn and la-7 manuals and you can see this here -
"Взлетный режим - не более 10 мин" and "Температура головок цилиндров - 250° (не более 15 мин)"...
EDIT
after all i read FN-manual again, some things remembered, do some little research and what can say now - m-82fn, like m-82f, can work on forsazh all time of flight if aircraft have good cooling of engine (like with full or just open all "radiators" or in winter)... all veterans talk about this too...
10 min max for critical oil T and 15 min max for critical cylinders T from manual, with or without some cooling, this is limits for one use without serious after-effects...
and phrase "Взлетный режим - не более 10 мин" - maybe this is what i write about temperatures, maybe it's + and next thing - resource of m-82fn was 100 hours (or something like this), and engine only 6 hours from 100 can work on forsazh... of course, can more, but in this case engine need to be repaired or he not work good all 100 hours... so, this is cautions for long life of engine and cautions for one sort of pilots ("культура эксплуатации двигателя")...
so, something like this... maybe i somewhere little wrong, maybe no (i think no), sorry for mistake if what...