I see now, that the NACA 64-210 actually does have a little bit of double concave towards the TE. very little, but is there.
Thanks for your input. Not easy to find any Liebeck wing profiles that doesn't need serious modification for a windfoil foil section. I guess it...
Can you share the findings on the lastest design ? I want to build a foil for windfoiling, so probably a little higher speed than wingfoil foils....
It is hard to see the double concave - actually hard to see any concave at all !? on the rudder maybe, but that is a symmetrical section.
Supersonic/ super cavitating sections (if that's what you mean ?) offent have a completely opposite geometri, thin leading edge and thick trailing...
Hi Erwan Basically it is still the lift/drag ratio that determines the efficiency, so adding a concave on the top of the profile might increase...
I know this post is quite old. How did it go with the foil design and perfomance ? I'm designing a racing windfoil and looking into what foil...
