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工作在真空罐内的平行光管的工作环境特点决定了其与空间光学遥感器相同的热设计原则,光管的结构形式对工作温度提出了严格要求。首先,确定光管结构表面的热控涂层和多层隔热材料的包覆方式;其次,光管热设计的关键是加热区设计,设计了两种加热方案,从可实施性和加热功耗大小对两种方案进行了比较;最后,对最终的热设计方案进行仿真分析。结果表明:平行光管光机结构的温度水平可控在19.3~20.8℃,主镜温度为19.5℃,满足设计要求,验证了热设计方案的可行性,可对其他同类型的地面光机结构的热设计提供借鉴。
The working environment characteristic of the collimator working in the vacuum tank determines the same thermal design principle as the space optical remote sensor. The structure of the light pipe poses strict requirements on the working temperature. First of all, the thermal control coating and multi-layer thermal insulation coating are determined on the surface of the light pipe structure. Secondly, the key of heat pipe design is heating zone design. Two heating schemes are designed, The size of the two programs were compared; Finally, the final thermal design simulation program. The results show that the temperature of parallel light pipe is controlled at 19.3 ~ 20.8 ℃ and the temperature of main mirror is 19.5 ℃, which meets the design requirements and verifies the feasibility of thermal design. The thermal design to provide reference.