Fullwings - question was posed to engineer that has access to the L/D data for different configurations - "Vapp (Vref+5) is close enough to not worry about the difference."
I don't have the exact data, just the word of an expert.
This could be researched in a sim. Level flight(to increase fuel flow/N1's, and flight test various speeds and configurations. Lowest power required wins.
1.2 Vso? Have to double check my manuals but I think we always have 1.3Vso protection on arrival, 1.2Vso protection on departure.
Best glide is for clean(ie, best glide configuration). Agree that configurated would be much worse. If my math is correct BA038 did 6:1 at Vref -27 kts. I'll see if I can figure out glide ratio closer to Vapp in my next sim session.
Last edited by misd-agin; 20th January 2009 at 16:27.
Reason: 1.2/1.3 Vso text and configured glide discussion.