Originally Posted by PBL
it is defined as the "point on the airfoil upper surface to which the freestream is tangent".
So, yes, it seems to be a common term, but it means the second of my proposed definitions, not the first!
Not exactly. Shevell's depends on the angle of attack. Thinking of the airfoil as such, I think your (and your aerodynamics guru's) definition is better than Shevell's.
regards,
HN39
Last edited by HazelNuts39; 7th Jan 2011 at 09:41.