title: [Analytic solution and experimental verification of pressure control function of the sealed module of manned space vehicle].
abstract: OBJECTIVE
  The analytic solution of the overall pressure and oxygen partial pressure in the scaled module of manned space vehicle was deduced, it can be used by ECLSS overall engineering designer to predict the pressure control parameters when space flight or ground test is operating.
  
  
  METHODS
  According to different gas supply situations and the role of pressure control zone prescribed by ECLSS, the flight duration was divided into several segments under the role of pressure control zone, and the differential equations were solved.
  
  
  RESULTS
  The analytic solutions of the total pressure and partial pressure of oxygen were obtained, and the theoretical curve corresponds well to the test value.
  
  
  CONCLUSIONS
  The analytic solutions obtained were valid, and satisfied the requirement of engineering accuracy.
authors.affiliation: Institute of Space Medico-Engineering, Beijing 100094, China.
authors.forename: J B
authors.initials: JB
authors.lastname: Rui
authors.forename: C X
authors.initials: CX
authors.lastname: Zheng
authors.forename: P X
authors.initials: PX
authors.lastname: Wang
mesh_terms: D000389:Air Conditioning / Q000379:methods; D001274:Atmospheric Pressure; D018504:Ecological Systems, Closed; D005740:Gases / Q000737:chemistry; D006801:Humans; D008021:Life Support Systems / Q000295:instrumentation*; D008433:Mathematics; D008962:Models, Theoretical; D010100:Oxygen / Q000737:chemistry*; D010313:Partial Pressure; D013026:Space Flight / Q000295:instrumentation*; D018531:Spacecraft / Q000295:instrumentation; D014893:Weightlessness
chemical_list: D005740:Gases; D010100:Oxygen