真空低温环境下红外笼移动装置设计及调试验证

Design and validation of an infrared heating cage translator used in the simulated space cryogenic vacuum environment

为在航天器真空热试验中方便快捷地实现高、低温工况的转换,设计了红外笼移动装置,高温工况时,将红外笼移至航天器加热面的上方;低温工况时,将红外笼移开。文章以红外笼移动装置的功能、性能需求分析为基础,确定了移动装置的功能模块及设计要求,通过特殊设计使得该移动装置能够克服低温传动失稳或失效问题,并满足真空润滑、电机热控等要求,实际应用表明其具备在真空低温特殊环境下可靠、安全工作的能力。文章最后根据装置的工程应用情况给出了后续改进建议。

The infrared heating cage translator is designed for the high or low heat flux simulation in the spacecraft thermal vacuum test. With it, the infrared cage can be moved to the top of the heating surface of the spacecraft under high heat flux conditions, or removed under low flux conditions. This paper, based on the analysis of the requirement of the system functions and properties, describes the functional blocks and the design requirements of the translator of the infrared heating cage. The translation device of the infrared heating cage, by a special design, works well without the risks of losing stability or failing in the cryogenic environment, or leading to poor lubrication under vacuum, or overheating of the electric motor. In practical applications, this system is shown to enjoy enough safety and reliability in the simulated space environment.. Some suggestions for improvement in further applications are presented lastly.