GATE_AE_2027_MOCK_04_Q40
GATE 2027 Aerospace Engineering All-India Master Mock 04 (Aerospace Structures, Thin-Walled Beams & Aeroelasticity)
NAT · 2 Marks
Aerodynamics & Fluid Mechanics • Airfoil & Wing Theory • Thin Airfoil Theory & Camber Effects
A thin symmetric airfoil at angle of attack lpha generates a section lift coefficient C_l = 0.50. According to thin airfoil theory, what is the section pitching moment coefficient about the quarter-chord point, C_{m,c/4}?
Answer Key:
0
Step-by-Step Verified Solution
### Solution: For a symmetric thin airfoil, the aerodynamic center is located at the quarter chord (c/4), and the pitching moment about the quarter chord is identically zero for all angles of attack. Correct: 0.