Quote:
Originally Posted by kach22i
Not to argue, but they look pretty flat to me, at least most of them. Does it have to be all of of the Tuffs laying flat?
EDIT: I do see that none of the Tuffs in the last 18" to the rear point are flat. Is this what you were pointing out? |
"Flat" is a relative term, but they all have to be laying against the surface, not lifting up (moving left right is ok, lifting up is not). You can see in the picture that shortly after the extension, tufts are lifting off the surface, first a little, then more and more and more. Tufts lifting off the surface is detached flow, detached flow means no further aero improvement, thus the very little gain by adding the extension (in my humble aerodynamic opinion).