The temperature model of the thermal re-radiation model in multilayer insulation systems

Open Astronomy

Sun Zhenyu¹  Cui Wenhui¹  Yang Jian² 

[1] State Key Laboratory of Astronautic Dynamics, Xi’an710043, China;Xi’an Institute of High Technology, Xi’an710025, China;

关键词: thermal re-radiation (trr);    multilayer insulation (mli);    temperature calculation;   

DOI  :  10.1515/astro-2020-0002

来源: DOAJ

【 摘 要 】

In this manuscript, the temperature model of multilayer insulation (MLI) on a spacecraft solar panel in thermal radiation is considered. The thermal insulation performance of MLI and the stress of the spacecraft are also considered. The thermal equilibrium equation of the surface temperature of MLI spacecraft in the presence of current transfer, and the iterative temperature acquisition algorithm of the front and back surface of solar panel MLI are derived. The Gaussian elimination method is used to invert the high order sparse matrix composed of error coefficients, thus realizing the real-time calculation of thermal re-radiation(TRR). The thermodynamic model was applied to the motion simulation of GPS Block IIR satellites, and the theoretical model was verified based on the actual temperature measurement data of several GPS Block IIR satellites. The simulation results have certain reference value for studying the thermodynamic modeling of MLI spacecraft and TRR perturbation calculation.

【 授权许可】

Unknown