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Coffyn's Flying Machine : Testing

The Model B airfoil in the wind tunnel at Wichita State University.
The Model B airfoil in the wind tunnel at Wichita State University

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Both the airfoil of the Model B and the propeller were tested in wind tunnels: at Wichita State University and Old Dominion University, respectively. In the case of the airfoil, both full-scale and models were tested, which resulted in accurate measurements of the lift and drag coefficients to the to angle of attack, which were used to calculate optimum speed of air over the wing. The effect of the fabric 'balooning' was observed on both the full-size and the model airfoils.

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