载人航天器空气环境参数控制非定常仿真分析
收稿日期: 2013-12-30
修回日期: 2014-03-26
网络出版日期: 2014-04-18
基金资助
中国载人航天工程专项
Unsteady Simulation Analysis on Air Environment Parameters Control of Manned Spacecraft
Received date: 2013-12-30
Revised date: 2014-03-26
Online published: 2014-04-18
Supported by
China Manned Space Engineering Special Project
为支持乘员在轨驻留,载人航天器需通过空气环境控制系统将众多设计参数和空气环境参数控制在指标范围内.文章建立了一种载人航天器空气环境非定常控制仿真分析模型,包括舱体模块、航天员模块、舱压控制模块、温湿度控制模块以及CO2净化模块.利用该模型分析了载人航天器空气环境参数随乘员代谢水平的非定常变化趋势,并评估了控制系统的工作性能.结果表明:乘员代谢水平变化对空气环境参数有显著影响,通过调节控制系统运行参数可将各空气参数控制在有效指标范围内.人区温度与O2分压、CO2分压和人区湿度有密切的影响关系,不可孤立地进行分析.为载人航天器空气环境参数控制系统的设计和流程改进提供了依据.
靳健 , 侯永青 . 载人航天器空气环境参数控制非定常仿真分析[J]. 航空学报, 2014 , 35(11) : 2970 -2978 . DOI: 10.7527/S1000-6893.2014.0032
In order to support crew reside, key air environment parameters of manned spacecraft should be controlled with index range using air environment control system which involves a number of design and operational parameters. In this paper, an unsteady simulation model of manned spacecraft air environment control is developed, including cabin sub module, crew sub module, pressure control sub module, temperature/humidity control sub module and CO2 removal sub module. Using this unsteady simulation model, air environment parameters varying trend as the crew metabolic level variation has been analyzed and performance of control system has been evaluated. According to the results, crew metabolic level could influence air environment parameters dramatically. Air environment parameters could be maintained within index range through regulating control system operational parameters. Furthermore, air environment parameters could not be analyzed separately due to non-negligible effects of air temperature to O2 partial pressure, CO2 partial pressure and relative humidity. The work in this paper is helpful to promote the process of design and improvement of the air environment control system of manned spacecraft.
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