第3部分使用简单的几何结构和基本假设描述了影响航天器表面平衡温度的因素。 考虑到内部和直接环境因素，并结合组成部分的各种配置和尺寸，给出了计算太阳、行星和反照率辐射影响的方法。购买本文件时可获得的所有当前修订均包含在购买本文件中。

Factors affecting the equilibrium temperature of a spacecraft surface are described in this Part 3 using simple geometrical configurations and basic assumptions. Methods for conducting calculations on the affect of Solar, planetary and albedo radiation are given taking into consideration the internal and immediate environmental factors and incorporating the various configurations and dimensions of the constituent parts.All current amendments available at time of purchase are included with the purchase of this document.