New Forum? Plus some Technical Stuff
This subject could be the basis for a new forum. Certainly, there is obviously a lot of interest in the subject.
Back to the subject. I have designed an aerobatic model with a very thick symetrical aerofoil section, with a very rounded leading edge, very light, under three pounds with a wing area of 720 sq in, (48 in x 15 in), with an OS25 powering it. It flies with very little speed differential in all attitudes, since drag builds up as it flies faster. It performs very well.
It has lead me to think- just how thick, and how blunt a leading edge could an aerofoil section be, before it's not capable of lift??