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为确保某飞行器设备舱外活动稳定可靠地进行,暴露在器外真空环境中的设备应具备良好的热控措施。针对飞行器整体结构及热控设计,器外设备采用被动热控措施控温。使用热分析软件Thermal-Desktop仿真计算不同结构状态及环境工况下的设备表面温度,详细分析了对应热控效果,提出了优化设计方案。在仿真计算基础上,通过飞行器热真空试验,完成了局部被动热设计方案验证。试验结果表明:以飞行器局部边框为等温散热体,两侧设备安装面与底板全面接触且中间填充导热硅脂,设备表面最高温度低于40℃,热控措施能够较好地满足设备正常工作的温度要求。
Abstract:To ensure the equipment of aircraft works stably and reliably during extravehicular activities, the equipment exposed to vacuum requires appropriate thermal control measures. Aiming at the overall structure and thermal design of aircraft, passive thermal control measures are used to regulate the temperature of the equipment outside the aircraft. The surface temperature of the equipment under different structural and environmental conditions is calculated by simulation using thermal analysis software Thermal-Desktop, the corresponding thermal control effect is analyzed in detail, and the optimal thermal design scheme is proposed. Based on the simulation calculation, the partial passive thermal design scheme has been tested and verified through the thermal vacuum experiment. The test results show that the bottom plate of backpack is used as an isothermal radiator, the equipment mounting surface is completely in contact with the bottom plate and the thermal grease is filled between them, the maximum temperature on the equipment surface is lower than 40℃, the thermal control can provide well temperature control for the equipment.
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基本信息:
DOI:10.16289/j.cnki.1002-0837.2025.02009
中图分类号:V42
引用信息:
[1]李金林,范庆梅,丁凌艳等.某飞行器局部被动热设计与验证[J].航天医学与医学工程,2025,36(02):137-142.DOI:10.16289/j.cnki.1002-0837.2025.02009.
基金信息:
人因工程全国重点实验室稳定支持科研项目(HFNK L2023WN05)