Airfoil drag Coefficients

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Mathiyazhagan RJ

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Apr 17, 2024, 8:31:20 AM4/17/24

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Could someone explain the highlighted coefficients to me? And how can they be obtained directly from xfoil?

Cd.png

Cory Goates

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May 23, 2024, 6:47:38 PM5/23/24

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CD,L and CD,L2 come from plotting the drag versus lift and fitting a parabola. CD,L is the linear coefficient for the parabola, and CD,L2 is the quadratic coefficient for the parabola.

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