空间相机的热分析和热设计

Thermal Analysis and Design for High Resolution Space Telescope

空间飞行器在轨道运行过程中,除空间热沉影响外,还会受到太阳辐射、地球红外辐射和地球阳光反照等热因素作用,同时相机内部热源也会影响相机的温度.温度的变化对高分辨率航天相机光学系统成像质量影响很大·热控系统的目的是保证相机的各部分保持在各自的温度范围内·本文对相机整体进行了详细热分析计算,得出了低温、高温初期、高温末期工况以及其他一些情况下相机各部分的温度水平,为相机热控实施提供依据·

There are several different sources of thermal energy acting on a spacecraft as it flying on heat dreariness orbit ; solar radiation, albedo, earth emitted infrared, and heat generated by camera equipment itself. Temperature fluctuating is a bad influence on imaging quality of high resolution camera. Purpose of thermal control is to maintain all the components of a spacebased camera within their respective temperature limits. Detailed thermal analysis and temperature calculation in different work status is put in practice on a spacebased high resolution camera as a whole in the paper, the result can supply references to thermal control for spacebased high resolution camera.