Derive an expression for lift co-efficient of a Van de Vooren Airfoil having chord length =2l,thickness parameter E and trailing angle tau. Discuss the effects of E and tau on the lift of Van De Vooren Airfoil.
Radius a = 2l(1+E)^k-1/(2^k)
z =(ztilt-a)6k/
(ztilt-aE)^k-1)+ l.