I have a pre-designed airfoil. It is designed to make 50lbs of lift at 100 mph at 7deg at sea level. It is not a high camber wing. It measures roughly 22 wide with 17" chord 5% camber and 125 chord thickness. I want to install a gourney flap and am wondering how much extra lift I can expect with what size of gourney flap?
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