月面采样相机的热设计与热分析

月面采样相机安装于月球无人采样返回探测器的机械臂上,其质量小,热耗较大,长期工作在高温环境中,故温度水平成为影响相机能否正常工作的重要因素,须予以分析。文章根据相机工作模式和机械臂的姿态运动特性,构建出适应机械臂运动的热分析模型,提出几种实现相机高温散热的方法,通过对比分析,分别确定了基于OSR涂层和白漆的热控方案,并推演了散热窗口的临界模型,为后续器外设备热设计提供借鉴思路。

Thermal design and thermal analysis for lunar surface sampling cameras

The lunar sampling cameras are installed on the robot arm of the lunar robotic sampling and return mission explorer. The cameras have a very small quality, but a very large heat rate. Both of the cameras required long-term work in high-temperature environment, thus the temperature level becomes an important factor to ensure normal work of the cameras. According to the working mode of the camera and the motion attitude of the manipulator, a thermal analysis model for adaptive motion is constructed, and several schemes to realize the high-temperature heat dissipation of the camera are presented. Through the comparative analysis, based on the OSR coating and white paint, the thermal control design of the cameras is determined, and the critical heat dissipation model of the cooling coating is selected. The research could provide reference for the thermal design of above deck equipment.