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← ScienceWhich outcome occurs when an aircraft's airspeed approaches critical Mach, violating compressibility corrections within the Euler equations?
A)Aileron reversal effectiveness diminishes rapidly
B)Elevator control becomes highly unstable
C)Shock induced airflow separation results✓
D)Rudder effectiveness increases unexpectedly
💡 Explanation
Shock induced airflow separation results because exceeding critical Mach causes the pressure gradient to amplify via the Prandtl-Glauert singularity, triggering boundary layer turbulence. Therefore, separation appears rather than increased control authority, because turbulence modifies lift.
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