GATE_AE_2027_MOCK_04_Q23
GATE 2027 Aerospace Engineering All-India Master Mock 04 (Aerospace Structures, Thin-Walled Beams & Aeroelasticity)
MCQ · 1 Mark
Flight Mechanics & Space Dynamics • Static Stability & Control • Longitudinal Static Stability & Neutral Point
The stick-fixed neutral point of an airplane is the longitudinal position of the center of gravity where:
(A) dC_m / dlpha = 0 (neutral longitudinal static stability)
(B) Elevator control power dC_m / d\delta_e = 0
(C) The aircraft enters an uncontrollable spin
(D) Lift coefficient equals zero
Answer Key:
A
Step-by-Step Verified Solution
### Solution: The neutral point is defined as the CG location at which the pitching moment curve slope dC_m/dlpha vanishes, representing the boundary between stability and instability. Correct: A.