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Structural test of KSLV-I Payload fairing

KSLV-I 페이로드 페어링 구조시험

  • Lee, Jong-Woong (Launcher structure & Materials team, Korea Aerospace Research Institute) ;
  • Kong, Cheol-Won (Launcher structure & Materials team, Korea Aerospace Research Institute) ;
  • Eun, Se-Won (Launcher structure & Materials team, Korea Aerospace Research Institute) ;
  • Nam, Gi-Won (Launcher structure & Materials team, Korea Aerospace Research Institute) ;
  • Jang, Young-Soon (Launcher structure & Materials team, Korea Aerospace Research Institute) ;
  • Shim, Jae-Yeul (Aircraft Structures Team, Korea Aerospace Research Institute) ;
  • Lee, Young-Shin (Mechanical Design Lab., Chungnam National University)
  • Received : 2013.07.10
  • Accepted : 2013.10.28
  • Published : 2013.11.01

Abstract

Payload fairing(PLF) protects satellites and related equipment from the external environment. They are separated before the satellite separation. Payload fairing made of composite sandwich materials due to their considerable bending stiffness and strength-to-weight ratio. Payload fairing have compression, shear and bending load during the flight. In this study, To check the strength of PLF and connected part, structural test of PLF accomplished using an actuator and a fixture. Purpose of structural test is to verify the strength of PLF in force of separation spring and combination structural load applied. Test result shows that the PLF have an acceptable margin of safety for the combination structural load and force of separation spring.

페이로드 페어링은 위성과 부품들을 외부환경으로부터 보호하며, 위성분리 전에 페이로드 페어링은 분리된다. 페이로드 페어링은 굽힘 강성과 무게에 비해 강도 비율이 우수한 복합재 샌드위치 재료로 제작 되었다. 페이로드 페어링은 비행 중에 압축, 굽힘 그리고 전단하중을 받게 된다. 본 연구에서는 PLF와 연결구조물의 강도를 확인하기 위하여 액추에이터와 치구를 사용하여 PLF 구조시험을 수행하였다. 구조시험의 목적은 분리 스프링의 힘이 PLF에 가해진 상태에서 조합하중이 PLF에 작용할 때 PLF의 건전성을 확인하는 것이다. 구조시험 결과에서는 분리 스프링 하중과 조합하중에 의한 PLF의 구조 건전성을 확인하였다.

Keywords

References

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