Journal of the Korea Institute of Military Science and Technology (한국군사과학기술학회지)

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Effect of Command Signal of Flow Control Valve on Performance of Underwater Discharge System using Linear Pump - Numerical Investigation

유량제어밸브 인가신호 형태가 선형펌프 방식 수중사출 시스템의 성능에 미치는 영향에 관한 수치적 연구

  • Lee, Sunjoo (Maritime Technology Research Institute, Agency for Defense Development) ;
  • Choi, Wonshik (Maritime Technology Research Institute, Agency for Defense Development)
  • 이선주 (국방과학연구소 해양기술연구원) ;
  • 최원식 (국방과학연구소 해양기술연구원)
  • Received : 2021.01.05
  • Accepted : 2021.03.12
  • Published : 2021.04.05
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Abstract

In the present study, the effect of command signals of the flow control valve on performance of underwater discharge systems using a linear pump was investigated numerically. For that, the improved mathematical model was developed. The improvement is to calculate the flow leakage between the water cylinder and the piston. Also the model of the hydraulic cylinder is simplified. To validate the improved model, calculation results were compared with experiment results. The results of the study is as follows: Double ramp command signals of the flow control valve had an advantage over single ramp signals. The parametric study on the effect of double ramp command signals on performance of the system was performed. In case of using double ramp signals, the maximum acceleration of the underwater vehicle was reduced by approximately 50 % compared with using single ramp signals.

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References

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