Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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NUMERICAL INVESTIGATION OF AERODYNAMIC INTERACTION OF AIR-LAUNCHED ROCKETS FROM A HELICOPTER

헬리콥터로부터 발사된 로켓의 공력 간섭 현상에 대한 수치적 연구

  • 이범석 (LIG 넥스원 PGM 연구센터 2팀) ;
  • 김유진 (카이스트 항공우주공학과) ;
  • 강경태 (국방과학연구소 1본부 2부) ;
  • 권오준 (카이스트 항공우주공학과)
  • Received : 2010.10.26
  • Accepted : 2011.02.10
  • Published : 2011.03.31
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Abstract

Numerical simulation of air-launched rockets from a helicopter was conducted to investigate the aerodynamic interference between air-launched rocket and helicopter. For this purpose, a three-dimensional inviscid flow solver has been developed based on unstructured meshes. An overset mesh technique was used to describe the relative motion between rocket and rocket launcher. The flow solver was coupled with six degree-of-freedom equation to predict the trajectory of free-flight rockets. For the validation, calculations were made for the impinging jet with inclined plate. The rotor downwash of helicopter was calculated and applied to simulation of air-launched rocket. It is shown that the rotor downwash has non-negligible effect on the air-launched rocket and its plume development.

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References

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