Volume 1956 (1956) Issue 91 Pages 9-16
In order to know the pressure distribution on the bottom of the hydroplane, it is necessary to solve an integral equation of two independent variables x and y. However it is almost impossible to solve this equation for the three dimensional motion, the author has found rigorous solutions for the two dimensional case, and, using these solutions with a consideration which resembles to that of Prandtl's lifting line theory, he has reduced the general equation to an integral equation of only one variable y. This simplified equation seems to be soluble by a comparatively simple manner.