摘要
目的对民用飞机客舱失压后的供氧能力开展计算研究,为保障飞行中旅客生命安全提供理论依据。方法首先依据CCAR25.1443(c)建立了补氧流量模型、乘客耗氧总量模型、等效生理高度计算模型;然后计算出不同飞行高度层氧气面罩最小补氧流量、不同机型乘客耗氧总量以及不同氧气浓度下的等效生理高度;最后对计算结果进行分析。结果补氧流量模型的计算结果与适航规范要求的补氧量一致;耗氧量模型可用于计算飞机氧气总储备量;氧气品质模型可用于确定面罩内氧气浓度发生变化时的生理等效飞行高度。结论该模型符合民用航空客机适航规范的要求,可依据飞行路线和乘客数量计算氧气储备量,并具备确定飞机生理等效飞行高度的能力。
Objective To provide theoretical reference for oxygen supply during flight,the required oxygen supply capacity of civil aircraft cabin after decompression was calculated and studied.Methods First,the passengers oxygen flow rate model,total oxygen consumption model,and the equivalent physical height calculation model were established based on CCAR25.1443(c).Then the minimum oxygen flow rate of the mask under different flight level,the total oxygen consumption of passengers and the equivalent physical height under different oxygen concentrations were calculated according to these models.In the end,the calculation results were analyzed.Results The results of the oxygen supply flow model were consistent with the requirements of the regulations.The total oxygen reserve of aircraft could be calculated by oxygen consumption model.The equivalent flight altitude could be determined by oxygen quality model when the oxygen concentration in the mask changed.Conclusion The model meets the requirements of regulations.It can calculate oxygen reserves according to flight routes and passenger numbers,and has the ability to determine the equivalent physiological flight altitude of an aircraft.
作者
魏志强
庞西宁
Wei Zhiqiang;Pang Xining(College of Air Traffic Management,Civil Aviation University of China,Tianjin 300300,China)
出处
《航天医学与医学工程》
CAS
CSCD
北大核心
2019年第5期426-431,共6页
Space Medicine & Medical Engineering
关键词
飞行安全
座舱失压
补氧流量
耗氧总量
等效生理高度
flight safety
cabin decompression
supplement oxygen flow rate
total oxygen consumption
equivalent physiological altitude
