Comment Mark Drela (Score 2, Insightful) 71
Dr. Mark Drela @ MIT is a great resource for these things. He is also an RC Sailplane enthusiast, so that is where I know him from. He is one of the most knowledgeable, helpful guys around, and makes all of his airfoils available to the public.
http://raphael.mit.edu/DRELA.bio.html
http://ww w.monkeytumble.com/dnc/supergee.htm
http://raphael.mit.edu/DRELA.bio.html
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