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VACUUM ›› 2022, Vol. 59 ›› Issue (4): 80-85.doi: 10.13385/j.cnki.vacuum.2022.04.15

• Vacuum Technology Application • Previous Articles     Next Articles

Simulation on Thermal Comfort of Astronaut Wearing Space Suit Under the Condition of Cabin Pressure Loss

FANG Ming-yuan, WU Yue, ZHANG Yang, XU Zhong-xu   

  1. Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China
  • Received:2021-10-11 Online:2022-07-25 Published:2022-08-09

Abstract: The intravehicular activity space suit is an important guarantee for astronauts to sustain life in the case of pressure loss in the cabin. The thermal comfort of astronauts is one of the important factors to be considered in the long time pressure loss condition. Based on the lumped parameter method, the thermal model of the spacesuit in the cabin is established, and the human-spacesuit thermal model is established with the Fiala model. The correctness of the simulation is verified by the domestic experimental data. Based on the simulation, the change rules of thermal comfort and humidity of ventilation gas under different pressure loss conditions were obtained, and the system optimization scheme was put forward, which provided reference for the design of emergency cabin pressure protection system and the formulation of life protection scheme in China.

Key words: human thermal model, space suit thermal model, numerical simulation, thermal comfort, cabin pressure loss

CLC Number: 

  • V445.1
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