プロペラの回転方向変化が推進性能におよぼす影響について

概要

論文の詳細を見る
Almost all of twin screw ships have been propelled by outward-rotating propellers for a long time. Bat there is not definite reason to show the superiority of the outward-turning propellers to the inward-turning propellers. Therefore, in order to know the effect of direction of propeller rotation upon the propulsive performance, several experiments have been carried out, with varying the principal particulars of the model ships, bossing angles to the hull surface, and bossing shapes. The main results obtained from the tests are as follows: 1) Bossing shape symmetrical to the bossing center line shows the better propulsive performance. 2) Proper angles of bossing center line to the hull center plane seems to be about 20° for the inward rotating propellers, and about 60° for the outward rotating propellers. 3) In the range of the tests, inward rotation of propellers showed the better propulsive performance, independent of principal particulars of model ships. 4) Superiority of inwardly rotating propellers was clarifyed from the wake survey by 5-hole pitot tubes.
独立行政法人海上技術安全研究所の論文
1974-06-30