Chinese Space Science and Technology ›› 2021, Vol. 41 ›› Issue (1): 22-28.doi: 10.16708/j.cnki.1000-758X.2021.0003

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Dimensional stability analysis of the satellite structure based on in-orbit temperature measurement data

LUO Wenbo, ZHANG Xinwei, QIAN Zhiying, ZHANG Ling, BAI Gang, MO Fan, LU Qingrong,  YIN Yazhou, FU Weichun   

  1. 1 Beijing Institute of Spacecraft System Engineering, Beijing 100094, China
    2 Beijing Institute of Control Engineering, Beijing 100094, China
  • Published:2021-02-25 Online:2021-02-02

Abstract: Aiming at the critical problem of dimensional stability of high precision mapping satellite structure, an inversion algorithm of in-orbit temperature field of satellite structure was proposed by using the analysis model and the variation rule of in-orbit temperature. Furthermore, the predictive methods of the short-term and long-term angle stability of payloads mounting interface were proposed. And then based on the above methods, the predictive values of short-term and long-term structure stability of GF-7 satellite within the first month were presented. Finally, the results of short-term stability were analyzed statistically. The results show that the prediction results of the short-term stability meet the requirements.

Key words: GF-7 satellite, structure, dimensional stability, in-orbit measurement, thermal deformation analysis