스텝 붙이 활주형 모터보트 선미부가물의 횡요저감효과에 관한 연구
A Study on the Anti-rolling Effect of Stern Sub-body in the Stepped-Hull Planing Boat
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초록
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 ahigh-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 results for similar boats or evaluation through numerical calculations. This study investigated the anti-rolling effect of the stern sub-body in a 50-knot class 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.
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 ahigh-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 results for similar boats or evaluation through numerical calculations. This study investigated the anti-rolling effect of the stern sub-body in a 50-knot class 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.
참고문헌 (10)
- 남해안시대 해양레저스포츠 활성화 기본구상, "경남발전연구원", 경남발전연구원, 122~135 (2007)
- 박충환, "실해역 모형시험기법을 이용한 소형고속 활주형선의 선형개발에 관한 연구", 박사, pp.2008
- 박충환, "활주형선의 Spray Strip 부착에 따른 저항특성연구", 대한조선학회 춘계학술발표대회, pp.60~65 (2004)
- 이춘주, "반활주형 선형의 저항특성 연구", 대한조선학회 추계학술발표대회, pp.211~215 (2003)
- Katayama, T., "A Study on Unstable Rolling Induced by Pitching of Planing Crafts at High Advance Speed", Journal of the Kansai Society of Naval Architectects, (225), pp.141~148 (1996)
- Larsson, L., "Principal of Yacht Design (Third Edition)", pp.203~207 (2007), Mc Graw Hill
- Niwa, S., "High-speed Craft Engineering", 115~119 (1977)
- Savitsky, D., "Hydrodynamic Design of Planing Hulls", Marine Technology, pp.71~95 (1964)
- Status of Hydrodynamic Technology as Related to Model Tests of High-Speed Marine Vehicles, "Savitsky, D.", ~, pp.DTNSRDC-81 (1981), 026
- Tanaka, H., "Cooperative Resistance Tests with Geosim Models of a High-Speed Semi-Displacements Craft", Journal of the Society of Naval Architects of Japan, 169, pp.55~64 (1991)