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

The Society of Naval Architects of Korea (대한조선학회)
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Experimental Study on Resistance and Running Attitude of an Amphibious Assault Vehicle with a Hydrofoil as a Trim-control Device

상륙돌격장갑차의 수상항주 시 트림조절을 위한 수중익에 의한 저항 및 자세변화에 대한 실험적 연구

  • Lee, Seung-Jae (Research Institiute of Marine Systems Engineering, Seoul National University) ;
  • Lee, Tae-il (Department of Naval Architecture and Ocean Engineering, Seoul National University) ;
  • Lee, Jong-Jin (R&D Center, Hanwha Techwin Co.,Ltd.) ;
  • Nam, Wonki (R&D Center, Hanwha Techwin Co.,Ltd.) ;
  • Suh, Jung-Chun (Research Institiute of Marine Systems Engineering, Seoul National University)
  • 이승재 (서울대학교 해양시스템공학연구소) ;
  • 이태일 (서울대학교 조선해양공학과) ;
  • 이종진 (한화테크윈(주) R&D센터) ;
  • 남원기 (한화테크윈(주) R&D센터) ;
  • 서정천 (서울대학교 해양시스템공학연구소)
  • Received : 2016.09.06
  • Accepted : 2017.02.09
  • Published : 2017.04.20
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Abstract

Amphibious assault vehicles have been used in the Marine Corps. In recent years, their ability to move faster is becoming one of the most important considerations. At high speeds, the vehicle tends to sink at the stern and sometimes the opposite occurs. Such dynamic trim plays a significant role in determining the vehicle's hydrodynamic performance. Furthermore, an excessive trim by stern upsets the viewing angle. We have thus considered a stern hydrofoil to reduce the dynamic trim of the amphibious assault vehicle. Laboratory-scale resistance tests were conducted in a towing tank at the Seoul National University (SNU). This study aims to make a preliminary assessment of the hydrodynamic performance of the vehicle with the stern hydrofoil and to investigate permissible speed range of the vehicle. The experimental results show that the stern hydrofoil can successfully achieve a reduction of both the dynamic trim and the hydrodynamic resistance at running speeds above 20 km/h.

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References

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