Originally Posted by
Pilot DAR
I observe that the original question was asked in the context of endurance, not range. As I recall, endurance is not at all affected by winds. Range is. Endurance is simply what is the greatest length of time the aircraft can remain airborne, going somewhere is not a part of that, so winds are not either.
I thought it had been answered - but a quick flick through shows - No we have answered many other questions but not the one asked !
I think the answer is
1 - An airspeed very close to Vx (max excess power so we have the maximum possible reduction in power available - however Vx is determined at full power and the thrust vs IAS curve may be slightly different at lower power settings)
2 - Best possible efficiency of the engine/propeller
a - Leaned to 25 degrees or so LOP (Best BSFC)
b - Turning the prop as slow as allowable (Reduced pumping losses and I believe slightly improved propeller efficiency)
3 - MP set to the minimum value consistent with level flight