摘要
非正常情况下,民机座舱压力控制系统难以进行地面验证,为了解决该问题,从工程实际出发,建立系统数学模型,开展全飞行包线内系统性能仿真分析;同时,针对非正常情况(包括单空调组件故障、应急卸压、爆炸减压)下的系统性能进行仿真分析。结果表明:单组件故障时对座舱压力影响较小;飞机应急卸压时满足适航要求;爆炸减压时卸压很快,不同破孔面积对应的减压时间差别很小。
Under abnormal conditions,the civil aircraft cabin pressurization system is difficult to take the ground verification.In order to solve the problem a system mathematical model is established from the engineering practice.Based on this model,the system performance under flight envelope,as well as its performance under abnormal conditions,such as single failure of air conditioning pack,emergency depressurization and burst depressurization is simulated and analyzed.The result shows that single failure of air conditioning pack is of little influence on system performance,and emergency depressurization can meet the requirement of airworthiness standards.For burst depressurization,cabin depressurizes quickly and the pressure dump time is nearly the same with different leak area.
作者
杨文强
郭涛
成杰
Yang Wenqiang;Guo Tao;Cheng Jie(Department of Mechanical and Electrical System, The First Aircraft Institute, Xi’an 710089, China)
出处
《航空工程进展》
CSCD
2017年第4期471-478,485,共9页
Advances in Aeronautical Science and Engineering
关键词
飞机座舱
压力控制
单空调组件故障
应急卸压
爆炸减压
aircraft cabin
pressure control
fault of single air conditioner component
emergency depressurization
burst depressurization
