A 110th scale model of an airplane is to be tested in a, Mechanical Engineering

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A 110th scale model of an airplane is to be tested in a

A 1/10th scale model of an airplane is to be tested in a wind tunnel that operates with air at a pressure of 20 atmospheres. The plane is expected to fly at a speed of 500 [km/hr]. (a) What speed should the wind tunnel be run? (b) If the drag measured on the model is 337.5 [N], what is the corresponding drag on the full size airplane? Recall that the viscosity is effectively independent upon pressure changes.

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