低总压非加压供氧装备生理试验评价  

The physiological assessment of the non pressure oxygen supply system with lower absolute pressure.

作　　者：肖华军[1] 王维山[1] 朱健[1] 陈晓勤[1] 高瑞霞[1] 

机构地区：[1]空军航空医学研究所

出　　处：《中华航空航天医学杂志》1997年第1期38-42,共5页Chinese Journal of Aerospace Medicine

摘　　要：目的验证提高普通供氧装备使用升限高度的可能性，旨在为新型喷气式教练飞机采用低总压制度，实现简化装备提供生理试验依据。方法在完成系统装备动态供氧性能试验的基础上，６名健康男性受试者使用ＹＸ－６氧气系统装备，在低压舱内分别上升６．２ｋｍ、５．３ｋｍ和１３．１ｋｍ，测试各生理指标的变化。结果ＹＸ－６氧气系统可满足飞行员在巡航高度上长时间飞行的供氧要求。在最大升限高度１３．１ｋｍ上供纯氧可以为飞行员提供０．５ｍｉｎ～１ｍｉｎ，降至１２．０ｋｍ以下高度，共有不少于２ｍｉｎ的应急供氧救生时间。满足了新型喷气式教练飞机战术技术要求。在高空１３．１ｋｍ试验中，受试者出现了明显的缺氧反应，如呼吸加深加快，肺通气量增加，心率增快，心电Ｔ波幅度降低，脑电出现７ｃ／ｓ慢波，血氧饱和度骤然下降至７０％，与预研及国外报道一致。结论非加压供氧装备在１３．１ｋｍ高度上的肺总压是１６．３ｋＰａ，属于低总压供氧制度，只能作为飞机从升限高度紧急下降的应急措施，不能作为继续飞行的保证措施。Objective To verify the possibility of raising the ceiling altitude to 13 km using non pressure oxygen system in order to provide the physiological basis for simplifying the oxygen equipment for a new type of jet trainer at ceiling altitude 13 km. Methods Six healthy subjects with YX 6 oxygen system underwent test in the altitude chamber at 6.2 km, 5.3 km and 13.1 km separately and related physiological indexes were collected. Results During the test at cruising altitude for 60￣240 min, the physiological indexes were essentially remained unchanged. The subject completed the test at ceiling altitude 13.1 km for 1 min and then descend to 12.0 km for 2 min, but some obvious symptoms and signs such as short and deep breath, increased pulmonary ventilation,heart rate lowered T wave of ECG and slow wave of EEG (7c/s) were observed. At the same time oxyhemoglobin saturation decreased to 70% abruptly. Conclusion YX 6 oxygen system can meet the requirements to fly hours at cruising altitude, and can be used as the emergency life sustaining measurement for the new type of jet trainer at ceiling altitude.

关 键 词：供氧装备 非加压供氧 生理试验评价 

分 类 号：R852.81[医药卫生—航空、航天与航海医学]