对地探测航天器舷窗热门技术的应用与传热简析

针对舷窗热门的应用背景进行了概述,以首次在我国某型号卫星上应用的舷窗热门为例,介绍了对地探测舷窗热门的典型结构设计和热设计。当热门处于不同的工作状态时,分别对舷窗玻璃和热门盖板建立微分方程,利用数值方法进行求解,并将求解结果与试验结果进行比较。由分析可知,采用舷窗热门可以有效降低空间恶劣热环境对于舷窗玻璃温度场的影响。

The Application and Simplified Thermal Analysis of the Porthole Thermal Cover Technique for Earth Observation Spacecraft

The application background of the porthole thermal cover was summarized firstly in this paper, and then the porthole thermal cover, which was the first time to be used in the satellite of our country, was taken as an example to introduce the typical structural and thermal design of a thermal cover for earth observation spacecraft. According to different operational states of the thermal cover, the differential equation sets of the thermal cover and the porthole glass were established and solved numerically, and the comparison was made between the numerical solution and the experimental data. By the analysis, it can be known that, the application of the thermal cover can reduce the negative thermal effects of the deep space on the temperature field of the porthole.