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

  • 제46권11호
  • /
  • Pages.892-901
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  • 2018
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  • 1225-1348(pISSN)
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  • 2287-6871(eISSN)
한국항공우주학회 (The Korean Society for Aeronautical and Space Sciences)
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극초음속 비행체의 구조설계를 위한 공력 열하중 요소 개발

Development of Aerodynamic Thermal Load Element for Structural Design of Hypersonic Vehicle

  • Kang, Yeon Cheol (Department of Aerospace Engineering, Inha University) ;
  • Kim, Gyu Bin (Department of Aerospace Engineering, Inha University) ;
  • Kim, Jeong Ho (Department of Aerospace Engineering, Inha University) ;
  • Cho, Jin Yeon (Department of Aerospace Engineering, Inha University) ;
  • Kim, Heon Ju (Agency for Defense Development)
  • 투고 : 2018.08.30
  • 심사 : 2018.10.02
  • 발행 : 2018.11.01
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초록

본 연구에서는 극초음속 비행체의 공력/열/탄성학적 거동을 반영할 수 있는 효율적인 공력 열하중 요소를 개발하였다. 빈번하게 설계 변경이 이루어지는 초기 설계 단계에서 효율적으로 사용될 수 있도록 준 해석적인 관계식을 적용하여 공력 하중과 열 하중을 구조 변형의 함수로 기술하고, 이를 기반으로 공력 열하중 요소를 정식화하였다. 정식화된 요소는 상용 프로그램의 사용자 서브루틴 형태로 구현하였으며, 이를 이용하여 극초음속 비행체 조종면의 공력/열/탄성학적 유한요소 연계해석을 수행하고 그 유용성을 확인하였다.

An efficient aerodynamic thermal load element is developed to reflect the effect of coupled aero-thermo-elastic behaviors in the early design stage of hypersonic vehicle. To this aim, semi-analytic relationships depending on structural deformation are adopted for pressure and thermal load, and the element is formulated based on the relations. The proposed element is implemented in the form of ABAQUS user subroutine, and coupled finite element analysis is carried out to investigate the aero-thermo-elastic behaviors of control surface of hypersonic vehicle. Through the analysis, usefulness of the proposed aerodynamic thermal load element is identified.

키워드

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