An Extension of Multhopp’s Lifting Surface Theory to Include the Effect of Flaps, Ailerons, etc.

摘要

The subsonic lifting surface theory due to PI, Multhqpp (Ref. 1) has been extended to include a chordwise discontinuity in the slope of the lifting surface, i.e. to include the effect of flaps, or ailerons. By representing the chordwise loading of a two-dimensional flapped flat plate in closed form, a new loading function is used in the representation of the chordwise loading, and a new influence function k is defined. This function is dependent on the parameter 0, which describes the hinge position, and so the tabulation which has been done for the influence functions, i and j, in Multhopp1 s original method have to be repeated for values of øh.