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On wings, the sharper the leading edge the more violent the stall. Very bad juju high speed close to the ground. Worse on laminar wings profiles. Nasa recommended a 2" radius on full size profiles and a bit of semi symmetrical offset towards the upper surface. Otoh, no severe penalty if a car looses lift due to stall.
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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