Re: 737NG emergency descent procedure...
Can anyone explain why adding winglets to 737's would require them to use gear down to meet emerg descent certification?
I'd have thought the added profile drag of winglets was more than the reduced induced drag, at the typical speeds of a high-speed emergency descent. Perhaps with the initial descent made near MMO, but still at a comparably low IAS, the rate of descent for the initial portion is less than without winglets.
Thoughts?
Hawk