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← ScienceWhich outcome results when an aircraft exceeds its designed Mach number?
A)Increased skin friction drag occurs✓
B)Lift coefficient becomes more stable
C)Parasite drag will be minimized
D)Improved fuel efficiency is achievable
💡 Explanation
Exceeding the designed Mach number results in increased skin friction drag because the kinetic energy dissipation from aerodynamic heating drastically increases. Therefore drag increases rather than decreasing lift or improving efficiency due to shock-induced boundary layer separation.
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