Show the flap effectiveness

Reference no: EM131515210

Question: A thin two-dimensional flat-plate airfoil is fitted with a trailing-edge flap of chord 100e% of the airfoil chord. Show that the flap effectiveness,

where α is the angle of incidence and η is the flap angle, is approximately 4 √e/π for flaps of small chord.

Reference no: EM131515210

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