卫星系统用激光通信载荷光学终端热控设计与试验验证

Thermal control design and experimental verification of optical terminals for laser communication payloads of a satellite system

某自研项目对于激光通信载荷光学终端的工作温度稳定性要求较高,文章针对该项目开展热控设计与试验验证。结合载荷所处空间环境情况、载荷自身多空间布局结构及热源分布分散等特点,采用分布式局部控温设计以及主动与被动相结合的温控方法,将光学终端的核心部件(主镜、次镜及转台电机等)温度稳定度控制在±1℃/30 min的指标范围内,有效保证了激光通信载荷功能与性能的实现。

A self-developed project requires high thermal stabiblity for optical terminals of laser communication payloads.In this paper,the thermal control design and experimental verification on laser communication payloads of the project was carried out.The temperature of the key optical terminal components such as primary mirror,secondary mirror,and rotary motor was controlled within a stability range of±1℃/30 min by using distributed local thermal control and active&passive thermal control methods,with considerations of space environment of the payloads,multi-space layout structure of the payloads themselves,and dispersed distribution of heat sources.Thus,the function and performance of the laser communication payloads was effectively realized.