Journal of Aerospace System Engineering (항공우주시스템공학회지)

The Society for Aerospace System Engineering (항공우주시스템공학회)
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On-orbit Thermal Characteristic for Multilayered High Damping Yoke Structure Based on Superelastic Shape Memory Alloy for Passive Vibration Control of Solar Panels

태양전지판의 수동형 제진을 위한 초탄성 형상기억합금 기반 적층형 고댐핑 요크 구조의 궤도상 열적 특성 분석

  • Min-Young Son (Department of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Jae-Hyeon Park (Department of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Bong-Geon Chae (STEPLab. Ltd.) ;
  • Sung-Woo Park (LIG Nex1 Co., Ltd.) ;
  • Hyun-Ung Oh (Department of Aerospace and Mechanical Engineering, Korea Aerospace University)
  • 손민영 (한국항공대학교, 항공우주 및 기계공학부) ;
  • 박재현 (한국항공대학교, 항공우주 및 기계공학부) ;
  • 채봉건 ((주)스텝랩) ;
  • 박성우 (엘아이지 넥스원(주)) ;
  • 오현웅 (한국항공대학교, 항공우주 및 기계공학부)
  • Received : 2023.07.15
  • Accepted : 2023.12.28
  • Published : 2024.02.28
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Abstract

In a previous study, a structure of a superplastic yoke consisting of a thin FR4 layer laminated with viscoelastic tape on both sides of a shape memory alloy (SMA) was proposed to reduce residual vibration generated by a deployable solar panel during high motion of a satellite. Damping properties of viscoelastic tapes will change with temperature, which can directly affect vibration reduction performance of the yoke. To check damping performance of the yoke at different temperatures, free damping tests were performed under various temperature conditions to identify the temperature range where the damping performance was maximized. Based on above temperature test results, this paper predicts temperature of the yoke through orbital thermal analysis so that the yoke can have effective damping performance even if it is exposed to an orbital thermal environment. In addition, the thermal design method was described so that the yoke could have optimal vibration reduction performance.

선행연구에서는 위성체의 고기동 시 전개형 태양전지판으로부터 발생하는 잔여진동을 저감시키기 위해 초탄성 형상기억합금 (Shape Memory Alloy, SMA)을 적용한 적층형 태양전지판 요크를 제안하였다. 요크에는 SMA 양면에 구속층을 적층시키기 위해 점탄성 테이프가 적용되며, 점탄성 테이프는 온도 의존성이 높아 온도에 따라 댐핑 특성 변화로 요크의 진동저감 성능에 직접적인 영향을 미친다. 이에 따라, 온도별 요크의 댐핑 성능을 확인하기 위해 다양한 온도조건에서 자유감쇠시험을 수행하여 댐핑 성능이 가장 극대화되는 온도 구간을 식별하였다. 본 논문에서는 상기 온도시험 결과를 토대로, 요크가 궤도 열환경에 노출되더라도 효과적인 댐핑 성능을 유지할 수 있도록 궤도 열해석을 통해 요크의 열적 거동 및 온도를 예측하였으며, 요크가 최적의 진동저감 성능을 낼 수 있도록 열 설계안 도출 방안에 관해 기술하였다.

Keywords

Acknowledgement

본 연구는 LIG넥스원(주)의 「고댐핑 태양 전지판전개구동장치 연구」 사업에 의해 수행되었습니다.

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