3翼可変ピッチプロペラの諸特性

概要

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In order to determine the principal dimensions of three bladed moderately skewed controllable pitch propeller series, comparative tests have been performed in the towing tank and the cavitation tunnel using two conventional CPP and a moderately skewed CPP. As the results of the tests, following conclusions are obtained. (1) Rates of thrust coefficient K_T and torque coefficient K_Q of the moderately skewed CPP to those of the conventional CPP decrease with increasing setting angle of the blades. But differences of propeller efficiencies among three propellers are little. (2) Extent of cavity on the blades of the moderately skewed CPP operating in non-uniform flow is slightly less than that of the conventional CPP. (3) Under cavitating condition, propeller induced pressure fluctuation decreases due to the effect of moderate skew of the propeller blades.
社団法人日本船舶海洋工学会の論文
1981-08-27