"steve.t" wrote in message oups.com...
Jim:

I've noticed and have flown C-15x with the exagerated wing tip (folded
down) and I've not really noticed any improvement at low speed (which
is what I think it is for, better handling at low speed for approach).

What I am interested in is increased lift, and better performance (in
terms of fuel usage) which is what the winglets do for the B-747
(something like 30% improvement in fuel economy! if memory serves me
correctly).


Oh, no, not 30%! If that were true then every plane would have them.

http://www.boeing.com/commercial/737...ets/wing2.html