View Single Post
Old 02-06-2016, 12:52 PM   #1869 (permalink)
Master EcoModder
aerohead's Avatar
Join Date: Jan 2008
Location: Sanger,Texas,U.S.A.
Posts: 11,224
Thanks: 17,991
Thanked 5,971 Times in 3,629 Posts

Originally Posted by ennored View Post
Don't know that I'd go so far as to say coincidence. While plan taper would certainly help, the roofline is surely buying something.

Seems to be working for Don Bur:

They claim 11.3% fuel savings. Even if it's half that, the roofline is doing quite a bit.
With 'Kamm's' research at the FKFS,the roofline camber as the only variable,was responsible for reducing the drag of a wing-like body from Cd 0.70,to Cd 0.21,a 70% drag reduction.
Photobucket album:
  Reply With Quote