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Which consequence results when boundary layers detach in airfoil stall?

A)Increased form drag due to separation
B)Decreased lift due to pressure increase
C)Elevated skin friction due to turbulence
D)Reduced stall angles, maintaining laminar states

💡 Explanation

Increased form drag occurs because boundary layer separation increases the pressure difference between the front and back of object via adverse pressure gradient. Therefore, form drag rises; increased drag, rather than lift reduction or friction variations from sustained attached laminar flow.

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