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The quarter-chord is the aerodynamic center for a cambered airfoil.

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The quarter-chord is the aerodynamic center for a cambered airfoil.

(a) True

(b) False

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I'd like to ask this question from The Cambered Airfoil topic in division Incompressible Flow over Airfoils of Aerodynamics

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The correct choice is (a) True

The explanation: The coefficient of moment about the quarter chord (cm,l/4=\(\frac {\pi }{4}\)(A2-A1)) is independent of angle of attack α, thereby making it the aerodynamic center (moment coefficient independent of angle of attack) for a thin cambered airfoil.

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