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目的机载分子筛是当代和未来飞机氧源的必然发展趋势。根据分子筛制氧技术和我军装备的特点，开展了有针对性供氧防护应用生理理论问题的系列研究。方法笔者通过理论分析、模型计算和实验研究，分析了不同飞行科目和环境对飞行员呼吸生理通气需求的影响极其与分子筛供氧能力之间的关系；观察了预先吸入模拟分子筛不同富氧气体对高空应急减压瞬间的生理影响和肺泡氧分压的变化特点；探讨了富氧（６０％～９０％）气体的排氮效果。结果①飞行综合环境因素对通气和瞬间吸气流量有显著的影响，通过设计直接式平衡活门的呼吸调节器和从环控系统引气的措施，使机载分子筛配套装备满足生理学要求成为可能；②在迅速减压后短时间内，预先呼吸＞７０％富氧与纯氧组间的血氧饱和度及静脉氧分压无明显差别（Ｐ＞０．０５），其生理效应是等效的；③高空飞行前呼吸不同富氧气体均能降低氮气的饱和比率。说明分子筛氧源给飞行员提供的呼吸环境，能减少体内氮气成分，降低高空减压病发生率。结论分子筛供氧防护生理学系列研究为分子筛装备的工程设计、制定防护生理学规范和部队应用提供了科学理论依据。
The purpose of airborne molecular sieve is the inevitable development trend of the contemporary and future aircraft oxygen source. According to the oxygen molecular sieve technology and the characteristics of our military equipment, carried out a series of theoretical studies on the application of physiology to the targeted oxygen protection. Methods By theoretical analysis, model calculation and experimental study, the author analyzed the relationship between the different aeronautic subjects and the environment on the pilot physiological respiratory ventilation demand and the oxygen supply capacity of the molecular sieve. The effects of pre-inhalation of different molecular oxygen-enriched gases on altitude The instantaneous physiological effects of emergency decompression and alveolar oxygen partial pressure characteristics; discussed oxygen enrichment (60% ~ 90%) of the nitrogen effect of nitrogen. Results ① The comprehensive environmental factors of flight had a significant impact on ventilation and instantaneous inspiratory flow. It was possible to meet the physiological requirements by designing the breathing regulator of the direct balance valve and the air bleed from the control system. ② In a short period of time after rapid decompression, there was no significant difference (P> 0.05) between the oxygen saturation of pre-breathing> 70% oxygen-enriched and pure oxygen group and the partial pressure of venous oxygen, the physiological effect was equivalent ; ③ high altitude flight before breathing different oxygen-rich gas can reduce the nitrogen saturation rate. This shows that the molecular sieve oxygen source to the pilot to provide respiratory environment, can reduce the body of nitrogen composition, reduce the incidence of altitude decompression sickness. Conclusion The series of studies on molecular sieve oxygen protection physiology provide a scientific basis for the engineering design of molecular sieve equipment, formulation of protective physiology norms and military applications.