Originally Posted by Blackrat
if you use an airfoil on your winglets they will be alot more effective ;-)
This is my background..... The 3% to 5% at most in efficiency on our birds do not warrant the extra time in cost for labor to produce and make work well. If we had pressure molded abilities that would be a game changer. I do agree with you 100% they would be better if done right but the current design does have some "tricks" in it found during the CFD.