航天器环境工程
航天器環境工程
항천기배경공정
SPACECRAFT ENVIRONMENT ENGINEERING
2008年
1期
59-63
,共5页
环境控制%空间环境模拟%KM6水平舱
環境控製%空間環境模擬%KM6水平艙
배경공제%공간배경모의%KM6수평창
environment control%space environment simulation%KM6 horizontal chamber
为满足中国载人航天的需求,研制了可进行人-船-服联合试验的大型空间环境模拟设备-KM6水平舱.文章介绍了该模拟设备的环境控制系统.它有两大功能:一是为舱内参试人员提供气体和应急救生用气;二是控制试验环境,包括对各种环境参数的控制,如控制舱内温度、湿度、压力、局部氧气压力,清除舱内气态污染物.在对水平舱减压时,不仅要注意每一项参数的控制稳定性,还要注意对所有参数的整体控制,因为这些参数是互相关联的.为了研究这些参数之间的关系,对该舱建立了数学模型,得出了不同边界条件下的最优控制方案.
為滿足中國載人航天的需求,研製瞭可進行人-船-服聯閤試驗的大型空間環境模擬設備-KM6水平艙.文章介紹瞭該模擬設備的環境控製繫統.它有兩大功能:一是為艙內參試人員提供氣體和應急救生用氣;二是控製試驗環境,包括對各種環境參數的控製,如控製艙內溫度、濕度、壓力、跼部氧氣壓力,清除艙內氣態汙染物.在對水平艙減壓時,不僅要註意每一項參數的控製穩定性,還要註意對所有參數的整體控製,因為這些參數是互相關聯的.為瞭研究這些參數之間的關繫,對該艙建立瞭數學模型,得齣瞭不同邊界條件下的最優控製方案.
위만족중국재인항천적수구,연제료가진행인-선-복연합시험적대형공간배경모의설비-KM6수평창.문장개소료해모의설비적배경공제계통.타유량대공능:일시위창내삼시인원제공기체화응급구생용기;이시공제시험배경,포괄대각충배경삼수적공제,여공제창내온도、습도、압력、국부양기압력,청제창내기태오염물.재대수평창감압시,불부요주의매일항삼수적공제은정성,환요주의대소유삼수적정체공제,인위저사삼수시호상관련적.위료연구저사삼수지간적관계,대해창건립료수학모형,득출료불동변계조건하적최우공제방안.
With the improvement of the manned space technology in China,a large space environment simulation test facility,the KM6 horizontal chamber,is under development,in which integrated tests of man,suit.and vehicle can be conducted.111is paper will describe the environmentcontrol system(ECS) of the test facility.According to the requircment of the proposed tests,the ECS should firstly supply desired gases,namely,oxygen,nitrogen,or the oxygen-nitrogen mixture,for the test crew and the test vehicle in the chamber,and than take charge of the eovironmant control for the test chamber and the test space vehicle under specific circumstances.For the function of supplying gases,the ECS should consider the emergency oxygen supply for the test clew inside the test chamber in case that the backpack life support system fails,besides the normal air supply according to the proposed ends.The functionof the environmont control covers the control of varlous parametersof the chamber environment such as temperature,humidity,chamber pressure,oxygen partial pressure,and the removal of the gaseous contaminant.Not only one has to pay attentions to the stable control of each parameter,but also one should put special emphasis on the overall control of all above parameters during the depressurization of the test chamber because these parmneters are closely coupled.In order to study the relationship between them,a mathematical model for the controlled chamberis built up.From results obtained under different boundary conditions,the optimum control schame is mapped out.
