空间站大面积太阳翼热分析

Thermal Analysis of Space Station's Large Solar-Array

本文在一定的假设条件下 ,对空间站大面积太阳翼进行了系统的热流和温度场计算。在计算中利用矢量分析和坐标变换的方法求解出了太阳直接辐射、地球红外辐射和地球反照的辐射角系数 ,再根据传热学理论建立了瞬态热平衡方程。应用有限单元法对热平衡方程进行了求解。本文通过计算给出了各项热流的大小及在总热流中所占的比例和太阳翼的瞬态温度场分布 ,对空间站大面积太阳翼设计及热控制具有一定的参考价值。

This paper investigates the external thermal flux and thermal distribution of space station's solar array under certain assumpted conditions.With the method of vector analysis and coordinate transform,the direct solar radiation angle factor、the earth infra red radiation angle factor and the reflected solar angle factor by earth are calculated.The proportion of every kind of thermal flux of the solar array is presented in this paper.The transient temperature distribution of solar array is also calculated by finite element method.Some conclusions in this paper are important for the design and thermal control.