载人航天器出舱活动氧气分压控制研究（英文）

Oxygen concentration control in extra-vehicular activity (EVA) of manned spacecraft

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

摘要: 载人航天器出舱活动期间氧气分压控制是保证航天员安全和完成出舱任务的重要因素。文章通过对出舱过程中引起氧气分压变化的因素分析，进行了出舱活动低压情况下的氧气分压安全限的试验验证研究，建立了出舱活动氧气分压变化趋势仿真模型，并在此基础上确定了出舱活动阶段舱压和氧气分压的调控方案。
- 载人航天器；出舱活动；氧气分压；控制；可燃性试验；飞行安全
Abstract: The oxygen concentration control in the extra-vehicular activity is important for the safety of astronauts and the success of the extra-vehicular mission. This paper analyzes the influencing factors of the oxygen concentration, and the proposes verification test methods on the oxygen concentration limits at a low pressure. A model is built to simulate the variation of the oxygen concentration, and the partial pressure of the oxygen and the module pressure control scheme during the extra-vehicular activity are designed.
- manned spacecraft