排水量型超高速船の開発研究(その3) : 抵抗推進性能

概要

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In the previous paper(Part 1) , the authors have showed that a monohull displacement-type vessel of abt. 10,000M. T, can navigate 5,000 nautical miles at 50 knots. This paper presents detailed study on her resistance and propulsive property, As for a displacement-type high speed vessel, it is important how to minimize wave-making resistance and spray resistance. Reforming the Ovoid-Type hull form obtained by semi-submerged ship theory, the Improved-Ovoid-Type hull form has been developed by experimental and theoretical approaches. This sophisticated hull form shows the better performance concerning with the spray drag and the viscous resistance. With regard to high speed propulsion systems, a conventional triple screw system with two pods has been applied. As the results of cavitation tests, it was revealed that the ship speed would be limited to 46 knots due to the thrust break down phenomena. This limitation, however, can be removed by equipping a contra-rotating propeller system.
社団法人日本船舶海洋工学会の論文