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← ScienceWhich 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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