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← ScienceWhich risk increases when an aircraft exceeds critical speed?
A)Increased turbulent flow over control surfaces✓
B)Elevated static pressure at wingtips
C)Reduced skin friction drag coefficient
D)Decreased induced drag from vortex shedding
💡 Explanation
Increased turbulence occurs because exceeding critical speed amplifies boundary layer separation. Enhanced energy dissipation then affects control surfaces, therefore turbulent flow increases, rather than pressure adjusting, skin optimizing, or induced drag mitigating.
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