Question: A supersonic airfoil has a parabolic symmetric shape for upper and lower surfaces such that the maximum thickness is t at 12 x = C.

A supersonic airfoil has a parabolic symmetric shape for upper and lower surfaces such that the maximum thickness is t at 12 x = C. Compute the drag coefficient at zero incidence by Ackeret theory, and compare with a symmetric double wedge of the same thickness.

r x

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