Hi. I'm not sure if this has been discussed before, but i didn't had much luck finding information on the subject.
Basically.. following a "by the book" startup procedure that is described in the manual of the Ka-50, the anti-ice systems are to be tested before the engine power tests (GG & PT contour).
That said.. if the outside temperature conditions require the anti-ice system to be on, when does one activates them? Once the anti-ice tests are complete, just leave them on? Or would that interfere with the engine power tests? Given the fact that the engine will bleed air for the anti-ice system, i assume that it will.
Or just perform the anti-ice tests, turn them off (as the procedures in the manual indicates), then proceed with the engine power tests and activate the anti-ice systems just before takeoff during the final checks?
Also, during the startup procedure of first engine, the last thing mentioned in the procedure is to check rotor rpm at idle power. Does anyone knows what "official" value the rotor rpm should be at with only one engine @ idle power?
From my experience, it stabilizes @ 53% rpm most of the times.. but without an official value given, i cannot tell if that is correct or not.
Note that the manual states that with both engines on, rotor rpm should be between 62-70%
Thanks in advance,
DJK