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← TechnologyWhich mechanism causes flutter in aircraft wings specifically near the speed called Vc, design maneuvering speed?
A)Aeroelastic instability due to modal coupling✓
B)Boundary layer transition to turbulence
C)Buffet from shock wave oscillation
D)Control surface reversal at high-speed
💡 Explanation
Flutter arises because aeroelastic instability (modal coupling), causing vibration amplitude to increase until structural failure. This occurs due to interactions of aerodynamic forces and elastic deformation, resulting in destructive oscillations rather than merely turbulent flow, therefore flutter.
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