月表地形环境对着陆器热控系统的影响分析

月球着陆器着陆月表之后的外热流环境与地球轨道卫星外热流环境的最大区别在于月表红外热流的影响.分析月表地形特征是确定月表红外热流影响范围的基础.文章根据调研分析选择了月海地区可能存在的平坦月表、斜坡、石块和撞击坑4种典型地形特征以及月表的热物性参数,并通过计算分析得出了月表地形对着陆器热控系统的一些影响规律--其中平坦月表和斜坡的影响最大,石块和小型撞击坑的影响可以忽略,大型撞击坑可以等效为斜坡的影响.

Analysis of the effects of different lunar landform on lunar landing vehicle's thermal control systems

The essential difference between the thermal environment on the lunar surface and that in the earth-orbit is the influence of lunar infrared heat flow. The analysis of the lunar topographical characteristics is the basis for determination of the infrared influence of the lunar surface. Four kinds of typical lunar landforms are selected in the lunar maria, together with the corresponding thermo-physical parameters. Conclusions are drawn through calculation and analysis on the effects of the lunar landforms on the thermal control systems of lunar landing vehicles. It is shown that flat lunar surfaces and slopes have the largest influence; the influence of rocks and small craters can be ignored while large craters behave similar to the slopes.