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← ScienceWhich consequence results when supersonic airflow undergoes shock-induced stall?
A)Boundary layer turbulence significantly increases drag✓
B)Skin friction drag decreases noticeably
C)Lift coefficient linearly decreases gradually
D)Overall pressure reduces behind control surfaces
💡 Explanation
Separation increases drag because adverse pressure gradients instigate boundary layer transition to turbulence via the adverse pressure gradient mechanism; therefore increased skin friction drag is expected rather than a decreasing factor, given the stall and the pressure changes.
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