GATE_AE_2027_MOCK_02_Q06
GATE 2027 Aerospace Engineering All-India Master Mock 02 (Compressible Aerodynamics & High-Speed Propulsion)
MCQ · 2 Marks
General Aptitude • Verbal Aptitude • Reading Comprehension & Critical Reasoning
Read the passage and answer: "Aeroelastic flutter is an unstable self-excited oscillation where aerodynamic forces couple with structural elastic modes. If damping becomes negative above a critical flutter speed, violent catastrophic failure can occur within seconds." What is the primary factor that leads to aeroelastic divergence and flutter at critical dynamic pressure?
(A) Viscous heating of the boundary layer
(B) Net negative structural-aerodynamic damping and modal coupling
(C) Complete laminar detachment across the whole wing
(D) Turbine inlet flow distortion
Answer Key:
B
Step-by-Step Verified Solution
### Solution: Flutter occurs when aerodynamic and elastic forces interact such that the net damping becomes negative, leading to unstable self-excited oscillations. Correct: B.