Volume 34 Issue 3
May  2014
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Li Rui, Liu Jikui, Xu Yuemin, Wang Youping, Liu Lei, Chang Xiao, Wu Fengshi, Sun Hailong. Study of Surface Charging and Discharging Effects on Solar Array Drive Assembly[J]. Journal of Space Science, 2014, 34(3): 360-366. doi: 10.11728/cjss2014.03.360
Citation: Li Rui, Liu Jikui, Xu Yuemin, Wang Youping, Liu Lei, Chang Xiao, Wu Fengshi, Sun Hailong. Study of Surface Charging and Discharging Effects on Solar Array Drive Assembly[J]. Journal of Space Science, 2014, 34(3): 360-366. doi: 10.11728/cjss2014.03.360

Study of Surface Charging and Discharging Effects on Solar Array Drive Assembly

doi: 10.11728/cjss2014.03.360
  • Received Date: 2013-05-20
  • Rev Recd Date: 2013-07-29
  • Publish Date: 2014-05-15
  • The spacecraft surface charging and discharging resulting from the space plasma environment is one of the main causes of spacecraft abnormity and malfunction. Solar Array Drive Assembly (SADA) is a crucial component of the electrical transfer sub-assembly of the modern long life and large power satellite, which is used to rotate the solar array to follow sunlight for maximum energy acquisition, as well as transfer power and signals from the solar array to satellite. SADA is installed at the interface of spacecraft body and outer space, so it is directly exposed to the space plasma environment and prone to the adverse effects of charging and discharging. When SADA malfunctions, the satellite will lose energy and results a failure of the whole satellite. In order to test the influence of surface charging and discharging by the space plasma environment on SADA, especially its power transfer reliability and safety, a plasma environment simulation device simulating the plasma environment in the GEO orbit, was utilized to conduct experimental test on a SADA. The SADAs utilizing different dielectrics demonstrated similar effects in the space plasma environment. The test result also demonstrated that the surface charging and discharging would not influence the normal functionality of SADA with proper design. The test result will serve as a good foundation for the design of future space mechanisms like SADA for higher reliability and safety.

     

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