飞机阻力伞机构功能危险性分析与故障树分析
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摘要
针对飞机阻力伞机构发生故障严重威胁飞行安全的问题,对阻力伞机构开展了功能危险性分析和故障树分析研究。结合功能分析和事故统计进行了功能危险性分析,得到阻力伞意外打开、阻力伞意外抛伞和阻力伞不能打开等6个主要故障模式及相应的安全性指标,作为故障树分析的顶事件。以阻力伞意外抛伞为例进行故障树分析,获得阻力伞意外抛伞的故障原因,通过计算各底事件的失效概率,综合得到阻力伞意外抛伞故障模式的发生概率,并提出改进建议。
According to the fact that airplane drag chute mechanism failure threatens flight safety seriously,the functional hazard analysis( FHA) and fault tree analysis( FTA) for drag chute mechanism is studied. With functional analysis and the accident statistics of the drag chute,functional hazard analysis is carried out. The six main failure mode of the drag chute mechanism and the corresponding safety indexes are obtained. The main failure mode is treated as the top event of the fault tree analysis. The detailed analysis of the fault tree is made taking the main failure mode that the drag chute falls off accidentally as an example. The probability of the accidental falling off failure mode is ascertained by calculating the failure probability of the bottom events,and the improving suggestion is given.
According to the fact that airplane drag chute mechanism failure threatens flight safety seriously,the functional hazard analysis( FHA) and fault tree analysis( FTA) for drag chute mechanism is studied. With functional analysis and the accident statistics of the drag chute,functional hazard analysis is carried out. The six main failure mode of the drag chute mechanism and the corresponding safety indexes are obtained. The main failure mode is treated as the top event of the fault tree analysis. The detailed analysis of the fault tree is made taking the main failure mode that the drag chute falls off accidentally as an example. The probability of the accidental falling off failure mode is ascertained by calculating the failure probability of the bottom events,and the improving suggestion is given.
引文
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[2]Zhang L,Ma H,Deng J J.Reliability Study of Disengaging Mechanism based on Fault Tree Analysis[C].Chengdu:China Ordnance Society,2012:290-292.
[3]朱岩,崔凝,戚学锋,等.民用飞机动力装置系统FHA研究[J].航空科学技术,2012(2):23-25.
[4]李丹圆,冯蕴雯,薛小锋,等.某型民机登机门功能危险性分析与故障树分析[J].航空计算技术,2013,43(3):25-30.
[5]Gong L,Zhang S,Liu X,et al.Research on Hazard Identification of Turbo-fan Engine Digital Control Systems Based on Functional Hazard Analysis[J].Acta Aeronautica et Astronautica Sinica,2011,32(12):2194-2203.
[6]冯蕴雯,朱铮铮,姚雄华,等.民机起落架安全性分析方法研究[J].西北工业大学学报,2016,34(6):969-975.
[7]郝恒,杜一凡,曹海斌.飞机阻力伞系统环境适应性分析[J].航空计算技术,2017,47(6):18-23.
[8]苏新兵,王建平,周瑞祥.某型飞机新型阻力伞机构改进设计[J].液压与气动,2008(2):11-13.
[9]万齐欣,谭林虎.某型老旧飞机抛放伞常见故障分析[C].桂林:航空安全与装备维修技术学术研讨会,2014.
[10]李洋.某型飞机阻力伞系统故障分析与排除[J].装备制造技术,2015(10):128-129.
[11]冯蕴雯,郝恒,薛小锋,等.飞机阻力伞意外打开可靠性分析[J].西北工业大学学报,2016.34(5):761-766.
[12]中国人民解放军总装备部.GJB900A装备安全性工作通用要求[S].北京:总装备部军标发行部,2012.
[13]赵廷弟.安全性设计分析与验证[M].北京:国防工业出版社,2014.