サーフェスプロペラ装備高速船の航走シミュレーションの研究

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  • Simulation of Running Attitude and Propulsive Performance of a High Speed Ship with Surface Piercing Propellers
  • サーフェスプロぺラ装備高速船の航走シミュレーションの研究
  • サーフェスプロペラ ソウビ コウソクセン ノ コウソウ シミュレーション ノ ケンキュウ

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Authors have already researched open characteristics of Surface Piercing Propeller (hereinafter SPP), blade stress and bearing forces and cleared that SPP has very high efficiency in the high speed range as a promising propulsive device. In this paper, with the aim of development of the faster and larger SPP ship, following researches were made using two high-speed ship models. 1) Measurements and analysis of three-component hydrodynamic forces (drag, lift and moment) acting on the model by towing test, varying trim and sinkage systematically. 2) Data- base construction of SPP open characteristics at various submerging depth. 3) Formation of computer simulation program of running attitude and estimation of propulsive performance of SPP high speed ship. Following results were obtained from this research. 1) Running attitude and resistance by this simulation have good agreement with free towing test results. Simulation method has various merits from viewpoints of design of high speed SPP ship. 2)According to estimated actual ship performance comparing with conventional propeller, SPP ship begins to improve propulsive performance more than about 40 knots and has drastic improvement for the high-speed range above 50 knots.

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