engine failure and vacuum system
i was wondering if anyone could tell me what, if any effect an engine failure would have on vacuum driven instruments. having never had an engine failure i dont really know how well the prop continues to spin with no power. so even at low airspeeds does the prop continue to windmill aat a sufficiant speed to drive the vacuum pump? or are the instruments considered to be unrelaible? would it be the same for fixeed and variable pitch props?