Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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Structural Safety Evaluation of Electro-Optical Camera Controller Box of CAS500 Satellite under Launch Environments

발사환경에 대한 차세대 중형위성 전자광학 카메라 제어용 전장품의 구조건전성 평가

  • Lee, Myeong-Jae (Space Technology Synthesis Lab, Dept. of Aerospace Engineering, Chosun University) ;
  • Kim, Hyun-Soo (Hanwha Systems) ;
  • Lee, Duk-Kyu (Korea Aerospace Research Institute) ;
  • Oh, Hyun-Ung (Space Technology Synthesis Lab, Dept. of Aerospace Engineering, Chosun University)
  • 이명재 (조선대학교 항공우주공학과 우주기술융합연구실) ;
  • 김현수 (한화 시스템) ;
  • 이덕규 (한국항공우주연구원) ;
  • 오현웅 (조선대학교 항공우주공학과 우주기술융합연구실)
  • Received : 2017.12.04
  • Accepted : 2018.07.18
  • Published : 2018.08.31
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Abstract

The satellite is exposed to various launch environments such as random vibrations and shock. Accordingly, structural design of electronic equipment mounted on satellite must meet reliability requirements at the box level. In addition, it is essential to secure the reliability of the solder joint applied to electronic equipment. In this paper, we performed a modal and quasi-static analysis for the purpose of satisfaction of the design requirements of the CCB (Camera Controller Box) present on the 500 kg-class compact advanced satellite (CAS500). In addition, structural safety of electronic components was verified by the Steinberg's method and random equivalent static analysis.

위성에 탑재되는 전장품의 경우 발사 진동환경에 대한 신뢰성 확보가 필수적이기 때문에 인증모델 제작 전 박스 레벨에서 설계요구조건에 대한 해석적 검증이 요구된다. 또한, 위성 전장품에는 다양한 실장 형태의 고집적 소자가 적용되기 때문에 솔더 접합부(Solder Joint)의 구조건전성 분석을 통한 신뢰성 확보가 필수적이다. 본 논문에서는 차세대 중형위성 광학 탑재체 제어기의 일부인 CCB(Camera Controller Box)에 대한 구조 설계 요구조건을 만족하기 위하여, 박스 레벨에서 모드 해석 및 준정적 해석을 수행하였다. 아울러, CCB 주요 소자의 안전성 분석을 위해 피로파괴 예측 이론에 기반한 구조 해석을 수행하였으며, 주요 소자 유한 요소 상세 모델 구축을 통한 랜덤 등가 정적 해석을 실시하여 전장품의 구조 건전성을 평가하였다.

Keywords

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