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UNSTEADY AERODYNAMIC ANALISES OF SPACE ROCKET CONFIGURATION CONSIDERING PITCHING MOTION

피칭운동을 고려한 우주발사체 형상의 천음속 비정상 유동해석

  • 김동현 (국립경상대학교 항공우주시스템공학부 및 항공기부품 연구소) ;
  • 김요한 (국립경상대학교 항공우주시스템공학부 대학원) ;
  • 김동환 (국립경상대학교 항공우주시스템공학부 대학원) ;
  • 윤세현 (한국항공우주연구원) ;
  • 김광수 (한국항공우주연구원) ;
  • 장영순 (한국항공우주연구원) ;
  • 김수현 (씨에이코리아(주))
  • Received : 2010.11.10
  • Accepted : 2011.03.18
  • Published : 2011.03.31

Abstract

In this study, steady and unsteady aerodynamic analyses of a huge rocket configuration have been conducted in a transonic flow region. The launch vehicle structural response are coupled with the transonic flow state transitions at the nose of the payload fairing. Before performing the coupled fluid-structure transonic aeroealstic simulations transonic aerodynamic characteristics are investigated for the pitching motions of the rocket at finite angle-of-attack. An unsteady CFD analysis method with a moving grid technique based on the Reynolds-averaged Navier-Stokes equations with the k-w SST transition turbulence model is applied to accurately predict the transonic loads of the rocket at pitching motion. It is shown that the fluctuating amplitude of the lateral aerodynamic loads imposed on the rocket due to the pitching motion can be significantly increased in the transonic flow region.

Keywords

References

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