SRI・aプロペラの諸特性および設計図表

概要

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The purpose of this paper is to develop screw propellers suitable for high speed container ship, especially from a view point of cavitation. Optimum shape of blade section from a view point of cavitation characteristics was discussed by means of calculation of pressure distributions over the chord of two dimensional wings. Systematic tests on the six bladed high pitch propellers, of which shape of blade section was obtained from the above mentioned consideration, have been carried out both in open water and under cavitating condition. Cavitation tests in a uniform flow were performed and the cavitation patterns were compared with the pressure distributions on the corresponding two dimensional wings calculated by the lifting surface theory. Also the curves for cavitation inception were obtained, and the influence of cavitation on thrust and torque of the propeller was discussed. From the results of open water tests, both √<Bp>-σ and √<Bu>-σ design diagram were presented. It was clarified that cavitation characteristics of the SRI・a-propellers were superior comparing with that of MAU propellers, by means of cavitation tests in a non-uniform flow.
独立行政法人海上技術安全研究所の論文
1976-03-20