多舱段载人航天器空气环境控制系统性能分析

建立了一种多舱段载人航天器空气环境控制系统性能集成仿真分析模型，包括舱体模块、乘员模块、舱压控制模块、温湿度控制模块和CO2净化模块，并对两舱段载人航天器空气环境控制系统性能进行了计算分析。结果表明，舱间通风传热能力较差，造成组合体温湿度水平超出指标范围，而舱间通风传质能力较强，可实现氧分压水平和CO2分压水平的集中控制。提出了一种控制系统改进方案，在非主控舱段增设控温系统改善组合体空气温度水平，仿真结果表明，控制系统改进后组合体各空气环境参数均满足设计要求。该工作有助于加快载人航天器空气环境控制系统的设计和改进流程。

Analysis on Characteristics of Air Environment Control System of Multi Cabin Manned Spacecraft

In this paper, an integrated simulation model of air environment control system of manned spacecraft with multi cabin including a cabin sub module, a crew sub module, a pressure control sub module, a temperature/humidity control sub module and a CO2 removal sub module are developed. Using this simulation model, the characteristics of air environment control system are analyzed. According to results, because of the weak heat transfer performance of inter cabin ventilation, both temperature and relative humidity of cabin are beyond limits, whereas centralized control of O2 and CO2 partial pressures of different cabins can be implemented due to well mass transfer performance of inter cabin ventilation. In this paper, an improved air environment control system is developed, in which an air temperature control system is added to the noncore cabin to control air temperature. The results show that air environment conditions meet requirement after improvement of the control system. The work in this paper is helpful to accelerate the process of design and improvement of air environment control system of manned spacecraft.