プロペラ揚力面理論の新展開(第2報)

概要

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In the 1st Report, the author has introduced the new lifting surface theory to screw poropellers and presented a two-dimensional integral equation for obtaining the circulation distributions on propeller blades. In this paper, the integral equation is slightly reformed, and the circulation distributions are represented by the stepwise functions in the radial direction, although these are continuous functions in the chord direction, in order to avoid the difficulties on the numerical integration in the neighborhood of the singularity. In the result, the integral equation is solved and the circulation distributions on the blade are obtained in relation to the working conditions of the popeller. From the circulation distributions, the corresponding camber lines of the two-dimensional wing are calculated and a new conception which is different from so-called camber and pitch corrections is introduced by the present theory.