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

The Korea Institute of Military Science and Technology (한국군사과학기술학회)
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Prediction of Aerodynamic Characteristics of the Grid Fins using Low/High Fidelity Methods

저/고 충실도 기법을 이용한 그리드핀 공력 특성 예측

  • Ki-Hoon Hur (Missile Research Institute, Agency for Defense Development) ;
  • Hyunjae Nam (Missile Research Institute, Agency for Defense Development) ;
  • Kyungjin Lim (Missile Research Institute, Agency for Defense Development) ;
  • Yeongbin Lee (Missile Research Institute, Agency for Defense Development)
  • 허기훈 (국방과학연구소 미사일연구원) ;
  • 남현재 (국방과학연구소 미사일연구원) ;
  • 임경진 (국방과학연구소 미사일연구원) ;
  • 이영빈 (국방과학연구소 미사일연구원)
  • Received : 2022.12.16
  • Accepted : 2023.03.10
  • Published : 2023.04.05
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Abstract

To predict the aerodynamic characteristics of the grid fins from subsonic to supersonic speeds, low fidelity SW as well as CFD SW were applied. VLM(Vortex Lattice Method) and SE(Shock-Expansion) method were used at subsonic and supersonic speed domain respectively for the rapid prediction of low fidelity SW. For 2 configurations of the grid fins, the CFD computations and tests using the trisonic wind tunnel were also performed to compare the results of the grid fins. The results of low fidelity SW, CFD SW and the wind tunnel tests data were agreed well each other. Through further research on the grid fins, the effective parameters of the grid fin configurations according to the speed regime will be investigated.

Keywords

Acknowledgement

이 논문은 2022년 정부의 재원으로 수행된 연구결과임(912757101).

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