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Which outcome results when strong adverse pressure gradients overcome laminar viscous forces in boundary layer flow around an airplane wing?

A)Increased lift vector magnitude develops
B)Flow separation and stall occurs
C)Reduced skin friction drag develops
D)Attached turbulent flow stays laminar

💡 Explanation

Flow separation and stall occurs because the adverse pressure gradient causes deceleration of the boundary layer, leading to transition to turbulence. Separation causes a stall in lift, therefore pressure drags increase exponentially, rather than laminar or turbulent flows being present otherwise.

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