极月轨道上太阳电池阵外热流规律分析

准确的月球表面温度分布模型对于开展月球探测具有重要意义. 目前有关月球表面温 度模型还缺乏对完整月球表面温度分布的计算方法研究. 本文建立了一套计算完整月球表面温度的方法, 其中月球阳面温度采用Racca模型直接计算得到; 对于月球阴面, 将其沿纬度方向划分为若干区域, 每个区域的地表土壤采用一维非稳态热传导模型, 根据嫦娥三号着陆器太阳电池阵在轨环月阶段的温度数据, 修正得到月球表面土壤导热系数、密度及比热容, 通过数值计算求解一维非稳态热传导方程, 得出任意时刻月球阴面表面温度随时间的变化. 嫦娥三号着陆器太阳电池阵环月阶段热分析结果与在轨温度符合较好, 初步说明本文建立的完整月球表面温度计算方法正确可行. 基于本文方法计算得到整个月球表面温度分布, 进一步研究了极月轨道太阳电池阵外热流变化规律. 

External Heat Flux of the Solar Array on the Polar Lunar Orbit

Accurate lunar surface temperature distribution model is important for human lunar exploration. But there is a lack of research on how to calculate the temperature distribution of the entire lunar surface. In this paper, an entire lunar surface temperature model has been established which uses Racca model to calculate temperature of the lunar sunny side. For lunar shady side, the lunar surface is divided into several zones along the latitudinal direction whose temperature is solved by one-dimensional non-steady heat conduction equation. According to Chang'E-3 solar array temperature data, parameter values of the heat conduction equation are amended. Thermal analysis results of Chang'E-3 solar array temperature are in good agreement with the measuring data, which preliminary proves that this model is sound and feasible. Based on lunar temperature distribution calculated by this model, heat flux characteristic of the solar array on polar lunar orbit has been researched.