Flow of Infinite Width Past a Trailing Edge with a Flap

This problem is connected with the aerodynamics of the cruise regime when (in stretched coordinates) the flow around the trailing edge is semi-infinite. The corresponding pattern of the flow and the auxiliary plane £ are depicted in Fig. 8.11, where Y = y//i, X = x/h, Of is the angle of the deflection of the flap (Of = 7гп, 0 < n < 1), and bf is the chord of the flap, normalized by the ground clearance.

Using the method of singular points, we find the derivatives of the complex potential in form of the expressions