摘要
为研究卫星热平衡试验误差,建立"希望一号"卫星热试验的联合热数学模型,对热平衡试验进行模拟,并与理想状态进行比较,发现仪器试验温度值在低温工况中偏低13～20℃,高温工况中偏低11～17℃;高温工况中-Y舱板表面到达热流不均匀度高达27.3%。此外,分析了热试验中热沉的温度、表面发射率、与卫星的表面积比,支架的导热、辐射漏热,电缆的导热、辐射漏热,以及热流计温度测量误差对卫星温度场的影响。
This paper analyzes the errors in satellites＇ thermal balance test, based on a combined thermal model of the Xiwang-1 satellite thermal balance test （TBT） and the analysis results are compared with the data in the ideal state. The thermal balance test error of Xiwang-1 is 13-20℃ in the low temperature case and 12-17℃ in the high temperature case; the non-uniformity of the received heat flux on -y cabin panel may reach 27.3% in the high temperature case. Besides, the influences of the temperature, the surface emissivity of the heat sink and the heat sink-satellite surface area ratio, the conduction and radiation heat leak of the bracket and the cable, and the radiometer temperature measurement error on the satellite temperature distributions are analvzed.
出处
《航天器环境工程》
2012年第5期514-521,共8页
Spacecraft Environment Engineering
关键词
卫星
热平衡试验
红外加热笼
温度
误差分析
数值模拟
satellite
thermal balance test
infrared heating cage
temperature
error analysis
numerical simulation
