载人航天器大气环境控制系统性能集成分析

考虑到载人航天器大气环境控制系统设计参数和控制参数众多，文章建立了一种载人航天器大气环境控制系统性能集成仿真分析模型，包括舱体模块、航天员模块、舱压控制模块、温湿度控制模块和二氧化碳净化模块。利用该模型对载人航天器常规工作模式下大气环境控制系统性能进行了计算分析，得到了在不同热负荷水平下载人航天器密封舱空气各个参数随在轨时间的变化趋势，结果表明:氧分压控制、二氧化碳净化和人区温湿度控制之间存在着密切的相互影响关系，不可孤立地进行分析。此外，文章还分析确定了非常规工作模式下热负荷水平允许上限，为载人航天器工作模式的确定提供了依据。研究结果有助于载人航天器大气环境控制系统的设计和流程改进。

Integrated analysis of characteristics of the air environment control system of manned spacecraft

The design of the air environment control system for a manned spacecraft is related to many parameters, In this paper, an integrated simulation model of the air environment control system is built, including the cabin sub module, the crew sub module, the pressure control sub module, the temperature/humidity control sub module, and the carbon dioxide removal sub module. Using this simulation model, the air environment control system is analyzed. According to the results, it is shown that the parameters of different sub modules of the air environment control system are coupled and their mutual effects can not be ignored, The variations of different parameters of the air environment control system under different heat load of air are analyzed. The upper limit of heat load of air is obtained, which could be used to determine the working pattern of the manned spacecraft. The work in this paper can be used in the design and improvement of the air environment control system of manned spacecraft.