Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Validity of the Concept of the Unit Grid Fin by 3-D Calculation of Supersonic Grid Fin Flows

초음속 그리드핀 3차원 유동해석을 통한 단위 그리드핀 개념의 타당성 연구

  • Lee, Hyeong Jin (Dept. of Aerospace and Mechanical Engineering, Graduate School, Korea Aerospace University) ;
  • Ko, Sang Ho (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kang, Tae Gon (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Lee, Yeol (School of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • Received : 2021.04.05
  • Accepted : 2021.06.01
  • Published : 2021.08.01
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Abstract

Three-dimensional numerical study was carried out to evaluate the aerodynamic characteristics of the supersonic grid fins installed on SpaceX Falcon 9. The present three-dimensional flow results were compared to the results by the concept of the unit grid fin previously introduced for more efficient and simpler flow calculations, and the validity of the approach of the unit grid fin were evaluated. The aerodynamic characteristics in supersonic flights Mach 2.8 of SpaceX Falcon 9 with various angle of attacks were also obtained.

SpaceX Falcon 9에 탑재된 초음속 그리드핀 유동 특성에 관한 3차원 수치해석이 수행되었다. 3차원 수치해석 결과를 기준으로 관련 수치해석 과정의 단순화와 효율성 향상을 위하여 과거 도입된 단위 그리드핀 접근의 타당성이 평가되었다. 아울러 마하수 2.8 초음속 비행조건에서 다양한 받음각을 갖는 SpaceX Falcon 9 그리드핀의 공력특성이 평가되었다.

Keywords

Acknowledgement

이 논문은 2020년도 한국항공대학교 교비연구비에 의하여 지원된 연구의 결과입니다.

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