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Estimation of Hydrodynamic Derivatives of Submarine Model by Using VPMM Test

VPMM 시험을 이용한 잠수함 모형의 유체력 미계수 추정

  • Jung, Jin-Woo (Dept. of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Jeong, Jae-Hun (Dept. of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Kim, In-Gyu (Dept. of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Lee, Seung-Keon (Dept. of Naval Architecture and Ocean Engineering, Pusan National University)
  • 정진우 (부산대학교 조선해양공학과 대학원) ;
  • 정재훈 (부산대학교 조선해양공학과 대학원) ;
  • 김인규 (부산대학교 조선해양공학과 대학원) ;
  • 이승건 (부산대학교 조선해양공학과)
  • Received : 2013.11.11
  • Accepted : 2014.04.08
  • Published : 2014.04.30

Abstract

In these days, the world has been increasing navy forces such as aircraft carriers and high-tech destroyers etc. and the importance of submarines is being emphasized. Therefore, accurate values of the derivatives in equations of motion are required to control motion of the submarines. Hydrodynamic derivatives were measured by the vertical planar motion mechanism(VPMM) model test. VPMM equipment gave pure heave and pitch motion respectively to the submarine model and the forces and moments were acquired by load cells. As a result, the hydrodynamic derivatives of the submarine are provided through the Fourier analysis of the forces and moments in this paper.

최근 들어 전 세계적으로 항공모함과 첨단 구축함 등 대규모의 최신 함정위주의 해상전력을 강화하는 상황에서 잠수함의 중요성이 더욱 부각되고 있다. 이에 따른 잠수함의 조종성능 향상을 위한 정밀한 동유체력 미계수 값이 요구된다. 본 논문에서는 VPMM(Vertical Planar Motion Mechanism) 실험을 위하여 연직 강제 동요시험(VPMM)장비를 이용하였고, 이를 통해 동유체력을 측정하였다. 심도, 주기, 속도 등을 변화시키며 다양한 환경에서 실험을 실시하였다. 잠수함 모형을 속도 U로 예인하면서 동시에 순수 상하동요(Pure heave), 순수 종동요(Pure pitch) 운동을 각각 주었고, 이때 부가되는 힘과 모멘트를 잠수함 모형의 선수 선미 부분에 장착된 로드셀을 이용하여 각각 획득하였다. 그 결과, 푸리에 해석을 통한 잠수함 모형의 선형 유체력 미계수들을 추정할 수 있었다.

Keywords

References

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