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How do you define the lift coefficient?

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in Aircraft Design by (701k points)
How do you define the lift coefficient?

(a) Ratio of aerodynamic lift to the dynamic lift

(b) Lift to drag

(c) Wing lift to weight of aircraft

(d) Thrust to weight

The question was asked during an internship interview.

This intriguing question comes from Aerodynamic Coefficients in portion Aerodynamics of Aircraft Design

1 Answer

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The correct answer is (a) Ratio of aerodynamic lift to the dynamic lift

Easy explanation: Lift coefficient is defined as aerodynamic lift divided by Dynamic lift. Dynamic lift is defined as product of dynamic pressure and reference area. Lift coefficient of airfoil and wing will be different.

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