Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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An Experimental Study on the Vertical Motion of a High-Speed Planing Craft in Regular Following Waves

선미 규칙파 중 고속 활주선의 연직면 운동에 대한 실험적 연구

  • Kim, Dong-Jin (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Rhee, Key-Pyo (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • You, Young-Jun (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Park, Han-Sol (Department of Naval Architecture and Ocean Engineering, Seoul National University)
  • 김동진 (서울대학교 조선해양공학과) ;
  • 이기표 (서울대학교 조선해양공학과) ;
  • 유영준 (서울대학교 조선해양공학과) ;
  • 박한솔 (서울대학교 조선해양공학과)
  • Received : 2009.11.09
  • Accepted : 2010.06.21
  • Published : 2010.08.20
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Abstract

It is well known that when a high-speed planing craft travels in following seas it experiences long-periodic motions due to low encounter frequency, and it often loses its course keeping stability. Therefore, it is necessary to study the sea-keeping performance and stability of it in the following seas. In this paper, the vertical motions of a planing craft were measured in following regular waves, and the test results were compared with the theoretical results. In the case of the same encounter frequency, non-dimensionalized motion amplitudes become larger as Froude number is higher, and non-dimensionalized motion amplitudes in head waves are larger than those in following waves. The mean values of the motions in following waves are similar to the running attitudes of a craft in calm water at the same Froude number.

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References

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