基于航空连续供氧系统和呼吸过程，建立了吸入气、气管气各组分计算模型，并依据此模型计算分析了不同乘员供氧标准不同座舱高度所需氧流量。结果表明：所建模型适用于不同乘员类型的连续供氧流量计算，为连续供氧流量标准提供了理论依据。针对大型运输机乘员多的特点，介绍了多乘员连续供氧试验方法、试验原理，并对试验数据进行了分析。试验结果表明：在通气量为15和20 L/min的情况下，12 km及其以下高度各测试点的氧分压均达到100~83.8 mmHg，满足供氧防护生理要求。
Based on the system for aviation continuous oxygen supply and the process of respiration, the sub-calculation models of inhalation air and trachea air were put forward to calculate the necessary oxygen flow at the different altitudes according to different criteria of oxygen supply for aircraft members. Calculation results show that the model is suitable for the calculation of continuous oxygen flows for different types of aircraft member and can provide a theoretical basis for the specification of continuous oxygen supply flow. To address the multi-member characteristic of transport aircraft, the test method for and theory of multi-member continuous oxygen supply are described and the test data are analyzed. The results show that the partial pressure of oxygen at each test point all reaches 100 to 83.8 mmHg under pulmonary ventilation 15 and 20 L/min condition when the cabin altitude is no more than 12 km, meeting the requirement of hypoxia protection.
[1] 中国民用航空局. 中国民用航空规章, 第25部:运输类飞机适航标准:CCAR-25-R4[S]. 北京:中国民用航空局, 2011. China Civil Aviation Administration. China civil aviation regulations, No. 25:Airworthiness standard for transport aircraft:CCAR-25-R4[S]. Beijing:China Civil Aviation Administration, 2011(in Chinese).
[2] 南京航空学院, 北京航空学院. 航空个人防护装备[M]. 北京:国防工业出版社, 1982:97-98. Nanjing Institute of Aeronautics, Beijing Institute of Aeronautics. Aviation personal protection equipment[M]. Beijing:National Defense Industry Press, 1982:97-98(in Chinese).
[3] 易韦未, 张玘, 王跃科, 等. 基于呼吸机的人工呼吸系统力学建模与仿真[J]. 系统仿真学报, 2009, 21(15):4892-4895. YI W W, ZHANG Q, WANG Y K, et al. Mechanics modeling and simulation of artificial respiration system based on ventilator[J]. Journal of System Simulation, 2009, 21(15):4892-4895(in Chinese).
[4] 覃海燕. 自主呼吸跟踪控制的关键技术研究[D]. 长沙:国防科学技术大学, 2008:20-25. QIN H Y. Research on key technologies of autonomous respiratory tracking control[D]. Changsha:University of National Defense Science and Technology, 2008:20-25(in Chinese).
[5] 仇安琪, 白净. 人体呼吸系统数学模型[J]. 北京生物医学工程, 2000, 19(1):6-13. QIU A Q, BAI J. A mathematical model of human respiratory system[J]. Beijing Biomedical Engineering, 2000, 19(1):6-13(in Chinese).
[6] BORRELLO M. Modeling and control system for critical care ventilation[C]//American Control Conference. Piscataway, NJ:IEEE Press, 2005:10-15.
[7] FINCHAM W F, TEHRANI F T. A mathematical model of the human respiratory system[J]. Journal of Biomedical Engineering. 1983, 5(2):125-133.
[8] 屠毅, 林贵平, 李国栋. 基于FlowMaster的运输机供氧系统仿真[J]. 北京航空航天大学学报, 2009, 35(11):1306-1310. TU Y, LIN G P, LI G D. Computer analysis of transport aircraft oxygen system based on FlowMaster[J]. Journal of Beijing University of Aeronautics and Astronautics, 2009, 35(11):1306-1310(in Chinese).
[9] 国防科学技术工业委员会. 飞机气氧系统设计和安装通用规范:GJB 1565-92[S]. 北京:国防科学技术工业委员会, 1992. Defense Industry Technical Committee. General specification of design and installation of gaseous oxygen system in aircraft:GJB 1565-92[S]. Beijing:Defense Industry Technical Committee, 1992(in Chinese).
[10] 肖华军. 航空供氧防护装备生理学[M]. 北京:军事医学科学出版社, 2005:59. XIAO H J. Physiology of aviation oxygen protective equipment[M]. Beijing:Military Medicine Science Press, 2005:59(in Chinese).
[11] 张立藩. 航空生理学[M]. 西安:陕西科学技术出版社, 1989:65. ZHANG L F. Aviation physiology[M]. Xi'an:Shaanxi Science and Technology Press, 1989:65(in Chinese).
[12] SAE International. Continuous flow aviation oxygen mask(for non-transport category aircraft):AS1224B[S]. Warrendale, PA:SAE International, 2011.
[13] SAE International. Passenger oxygen mask:AS8025A[S]. Warrendale, PA:SAE International, 2011.
[14] SAE International. Oxygen mask assembly, demand and pressure breathing, crew:AS452B[S]. Warrendale, PA:SAE International, 2014.
[15] 罗二平, 申广浩, 吴晓明, 等. 高原条件下使用增氧呼吸器对血氧饱和度和心率的影响[J]. 航天医学与医学工程, 2005, 18(4):297-299. LUO E P, SHEN G H, WU X M, et al. Effects of oxygen breathing apparatus on blood oxygen saturation and heart rate at high altitude[J]. Space Medicine and Medical Engineering, 2005, 18(4):297-299(in Chinese).
[16] 朱明善, 刘颖, 林兆庄, 等. 工程热力学[M]. 北京:清华大学出版社, 1995:120. ZHU M S, LIU Y, LIN Z Z, et al. Engineering thermodynamics[M]. Beijing:Tsinghua University Press, 1995:120(in Chinese).
[17] United States Department of Defense. Crew systems oxygen systems handbook:JSSG-2010-10[S]. Arlington, VA:United States Department of Defense, 1998.
[18] Mountain High Equipment & Supply Co. Electronic pulse-demand oxygen delivery systems[EB/OL]. (2017-06-13)[2018-04-17]. http://www.MHoxygen.com.
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