The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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System Level Space Environment Testing of Satellite Digital Transponder

디지털 위성중계기에 대한 시스템 단위의 우주환경 검증 시험

  • Received : 2013.08.08
  • Accepted : 2013.11.22
  • Published : 2013.12.31
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Abstract

EQM Model Digital transponder applying the Korean's own designing and manufacturing technology has gone through a series of trials and errors during the development. In particular, lack of thermal designs expedience for the vacuum causes variety of errors in designing, assembling transponder and setting up the test at the first thermal vacuum test (TVAC). Since the first TVAC test could not accomplished its aims successfully, so the second TVAC should be performed as make up test with revised Digital transponder. In this paper, the defects that identified in the first TVAC are analyzed and applied solutions and its results at the second TVAC are presented. Using the lessons from the first and second TVAC, we will be able to make more reliable digital transponders in the next phase of project. In addition it also be useful as a reference when we design another satellite payloads.

국내기술을 적용하여 설계 및 제작한 디지털중계기 우주인증모델 개발은 개발과정중 사전에 예측하지 못한 다양한 시행착오를 겪었다. 특히 진공이라는 특수환경에 대한 열설계 경험 부족으로 인하여 1차 진행된 열진공 시험시 설계/조립/시험구성 오류사항들을 식별하게 되었고 중계기에 대한 성능검증을 성공적으로 수행할 수 없었기 때문에 사전에 계획되지 않은 2차 열진공 시험을 수행하게 되었다. 본 논문은 디지털 중계기의 1차 열진공 시험 시 발생한 오류사항에 대한 분석과 2차 시험시 적용한 해결방법과 그 결과를 제시한다. 이를 통하여 본 과제의 2차 우주인증모델 개발시 열적 성능이 개선된 디지털중계기를 얻을 수 있을 것이다. 또한 추후 국내외에서 개발될 중계기 탑제체의 열진공 시험시 참고자료로서 활용될 수 있을 것이다.

Keywords

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