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Volume 41 Issue 8
Aug.  2015
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(8): 1409-1415.
JIN Jian, XU Jin, HOU Yongqinget al. Simulation analysis on oxygen partial pressure control of multi-cabin manned spacecraft[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(8): 1409-1415. doi: 10.13700/j.bh.1001-5965.2014.0565(in Chinese)
Citation: JIN Jian, XU Jin, HOU Yongqinget al. Simulation analysis on oxygen partial pressure control of multi-cabin manned spacecraft[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(8): 1409-1415. doi: 10.13700/j.bh.1001-5965.2014.0565(in Chinese)
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Simulation analysis on oxygen partial pressure control of multi-cabin manned spacecraft

doi: 10.13700/j.bh.1001-5965.2014.0565

  • Institute of Manned Space System Engineering, China Academy of Space Technology, Beijing 100094, China

  • Received Date: 15 Sep 2014
  • Publish Date: 20 Aug 2015
    Abstract
  • In order to ensure crew security, oxygen partial pressure of pressurized cabin should be controlled within index range using oxygen partial pressure control system. A mathematical model about oxygen partial pressure control system of multi-cabin manned spacecraft was proposed, including pressurized cabin, crew, oxygen makeup assemble, inter module ventilation (IMV) and other sub-modules. Through comparing with experiment results, veracity of the model was proved. Using this model, influence of different factors to oxygen partial pressure of manned spacecraft with two pressurized cabins all with the volume of 60 m3 was analyzed, including crew location, inter module ventilation and oxygen partial pressure monitoring mode. According to results, oxygen partial pressure peak value difference between two cabins could reach 2.2 kPa when crew of 6 stay in un-control cabin and IMV flux is 0.5 m3/min. Oxygen partial pressure difference between two cabins keep reducing as the inter module ventilation flux increasing. Monitoring mode has little effect to oxygen partial pressure of two cabins. When IMV flux is beyond 1.5 m3/min, the difference between one-cabin monitoring mode and two-cabin monitoring mode could be ignored.

     

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