Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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On-orbit Thermal Environment Characteristic according to Launch Time of CubeSat STEP Cube Lab-II

초소형위성 STEP Cube Lab-II의 발사시간 변화에 따른 궤도 열환경 특성 분석

  • Son, Min-Young (Department of Smart Vehicle System Engineering, Chosun University) ;
  • Oh, Hyun-Ung (Department of Smart Vehicle System Engineering, Chosun University)
  • 손민영 (조선대학교 스마트이동체융합시스템공학부) ;
  • 오현웅 (조선대학교 스마트이동체융합시스템공학부)
  • Received : 2021.03.09
  • Accepted : 2021.07.30
  • Published : 2021.10.31
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Abstract

STEP Cube Lab-II (Cube Laboratory for Space Technology Experimental Project-II) is a 6U Cube satellite equipped with optical and infrared cameras for monitoring Mt. Paektu volcanic eruption signs and earth observation in the Korean peninsula. To guarantee successful mission operation of the cube satellite in orbit, thermal design is essential for the electronic equipment, and must be kept within the allowable temperature range during the mission period. Thus, it is necessary to analyze the predictable orbital thermal environment. The STEP Cube Lab-II is launched through the KSLV-II, however, the operation orbit has not been determined due to the unknown launch time. In this study, we performed a thermal analysis of the satellite and investigated the heat flux according to launch time to analyze the worst orbital conditions that could occur.

현재 백두산의 분화 징후 및 지구관측을 목적으로 광학 및 중·장적외선 카메라를 탑재한 6U 규격의 초소형위성 STEP Cube Lab-II (Cube Laboratory for Space Technology Experimental Project-II)가 개발되고 있다. 궤도상에서의 위성을 안정적으로 운용하기 위해서는 전 임무기간 동안 위성에 탑재된 장비가 허용온도범위 내 만족이 가능한 열설계가 필수적이며, 이에 앞서 위성이 겪을 수 있는 궤도 열환경에 대한 분석이 선행되어야 한다. STEP Cube Lab-II는 향후 한국형발사체 (KSLV-II)를 통해 발사될 예정이나, 현재 발사시간 미정으로 궤도가 정해지지 않은 상태이다. 따라서 본 논문에서는 큐브위성이 겪을 수 있는 최악의 궤도 조건 분석을 위해 예상되는 발사시간 이력을 토대로 위성의 열 유입량 분석을 수행하여 발사시간에 따른 열적 영향성 분석을 수행하였다.

Keywords

Acknowledgement

본 연구는 과학기술정보통신부 주최 한국항공우주연구원 주관 2019 큐브위성경연대회의 일환으로 수행되었으며, 이에 관계 기관의 지원에 감사를 드립니다.

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