抄録
Two disputable points in the spanwise integral are discussed in a MULTHOPP-type method for solution of the integral equation of subsonic lifting-surface theory. The first point is the coincidence of each collocation section with one of the spanwise integration points. This makes necessary the evaluation of regularized influence function at the coincident points which is very time consuming except in the case of steady wing. The second point is the relatively small but undesirable sharp variation of the regularized influence functions near the collocation sections which is the cause of the necessity of taking a large number of spanwise integration points. Devices for improvement to cope with these dificulties are proposed. Numerical examinations of the proposed method will be given in Part 2.
