A Study on the Anti-rolling Effect of Stem Sub-body in the Stepped-Hull Planing Boat |
Kang Byung-Yoon,Park Chung-Hwan |
Leading Boat Development Co. Ltd.,Korea Marine Leisure Department RIMS |
스텝 붙이 활주형 모터보트 선미부가물의 횡요저감효과에 관한 연구 |
강병윤,박충환 |
리딩선박개발(주),중소조선연구원 해양레저산업부 |
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© 2008 The Korean Society of Ocean Engineers
Open access / Under a Creative Commons License
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Keywords:
Planing boat, Stern sub-body, Stepped-hull, At-sea model test, Anti-rolling |
핵심용어:
활주형선, 선미 보조동체, 스텝 붙이선형, 실해역 모형시험, 횡요저감 |
Abstract |
It is hard to find experimental data for a model test of small high-speed planning boats. It is difficult to verify the performance seen in a model test for a high-speed boat because the ship-model scale-ratio is very small and the flow velocity of the circulating water channel and the X-carriage speed of the towing tank are restricted. Therefore most hull-form designs for high-speed small boats depend on the sea-trial test result for similar boats or evaluation through numerical calculations. This study investigated the anti-rolling effect of the stern sub-body in a 50-knot doss planning boat. To carry out this work, new model test procedures were set up in the actual sea. Using this method, the anti-rolling effect of the stern sub-body was investigated. A stern sub-body attached to a planning boat was proved to be effective in reducing the roll and pitch angle. |