인공위성 영상기의 열모델링 방법

THERMAL MODELING TECHNIQUE FOR A SATELLITE IMAGER

  • 김정훈 (한국항공우주연구원 위성기술실) ;
  • 전형열 (한국항공우주연구원 위성기술실) ;
  • 유명종 (한국항공우주연구원 위성기술실) ;
  • 김병수 (충남대학교 항공우주공학과)
  • 발행 : 2010.05.13

초록

Conductive and radiative thermal model configurations of an imager of a geostationary satellite are presented. A two-plane method is introduced for three dimensional conductive coupling which is not able to be treated by thin shell plate thermal modeling technique. Especially the two-plane method is applied to massive matters and PIP(Payload Interface Plate) in the imager model. Some massive matters in the thermal model are modified by adequate correction factors or equivalent thickness in order to obtain the numerical results of thermal modeling to be consistent with the analytic model. More detailed nodal breakdown is specially employed to the object which has the rapid temperature gradient expected by a rule of thumb. This detailed thermal model of the imager is supposed to be used for detailed analyses and test predictions, and be correlated with the thermal vacuum test results before final in-flight predictions.

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