Question: A very wide NACA 4412 airfoil, with a chord of 75 cm, is tested in a sea-level wind tunnel at 45 m/s and found to

A very wide NACA 4412 airfoil, with a chord of 75 cm, is tested in a sea-level wind tunnel at 45 m/s and found to have a lift of 65 lbf per foot of span. Estimate the angle of attack for this condition.

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