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An airfoil is such that the drag produced by airfoil is 25N. Airfoil has chord of 2m and is experiencing dynamic pressure of 10Pa. Find the value of drag co-efficient for airfoil.

An airfoil is such that the drag produced by airfoil is 25N. Airfoil has chord of 2m and is experiencing dynamic pressure of 10Pa. Find the value of drag co-efficient for airfoil. Correct Answer 1.25

Given, Drag = 25N, dynamic pressure q = 10Pa, chord c = 2m. Now, drag co-efficient Cd = Drag / (q*c) = 25 / (10*2) = 1.25.

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