The NACA 64(l)412 airfoil has a lift-to-drag ratio of 50 at 08 angle of attack, as shown
Chapter 11, Problem 11-93(choose chapter or problem)
The NACA 64(l)412 airfoil has a lift-to-drag ratio of 50 at 08 angle of attack, as shown in Fig. 1143. At what angle of attack does this ratio increase to 80?
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