航空发动机断裂关键件失效率分析

杜少辉; 洪 杰; 谢里阳

航空发动机断裂关键件失效率分析

1.
东北大学机械学院沈阳, 110004
2. 北京航空航天大学能源与动力工程学院, 北京 100191
3. 东北大学机械学院沈阳, 110004

详细信息

作者简介:
杜少辉(1963-),男,山东荣城人,博士生,dsh7231@TOM.com.

中图分类号: V|231.95
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出版历程
- 收稿日期: 2008-05-14
- 网络出版日期: 2009-04-30

Failure risk analysis for fracture critical aero-engine components

1.
School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China
2. School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
3. School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China

摘要

摘要: 根据新的航空发动机取证规范标准,要求必须对航空发动机轮盘等关键件进行安全性分析.分析的最终目的是确保由所有发动机失效产生的对飞机的风险达到可以接受的低水平.主要讨论了航空发动机断裂关键件的失效风险.采用一种风险评估方法,对某轮盘寿命进行了失效率分析.分析结果表明,轮盘危险性发动机影响预期发生的概率不超过定义的极少可能概率(小于10^-7次/发动机飞行小时).
- 航空发动机 /
- 断裂关键件 /
- 可靠性 /
- 风险评估
Abstract: Accroding to the newly certification specifications and standard for engines, safety analysis for aero-engine critical parts such as disks must be done. The ultimate objective of a safety analysis is to ensure that the risk to the aircraft from all engine failure conditions is acceptably low. The failure risk for fracture critical aero-engine components was discussed first. The fracture risk of a disc was analyzed based on risk assessment method. The result shows that hazardous engine effects are predicted to occur at a rate not in excess of that defined as extremely remote (probability less than 10^-7 per engine flight hour).
- aero-engine /
- critical component /
- reliability /
- risk assessment

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参考文献(1)

[1] European Aviation Safaty Agency, Certification specification for engines[S] [2] FAR PART33, Airworthiness for standards:aircraft engines[S] [3] Def Stan 00-970, Design and airworthiness requirement for service aircraft, part 11-engine[S] [4] Boyed-Lee A D, Harrison G F. The development of life extension methods for fracture critical aero-engine components The RTO AVI Workshop on Qualification of life Extension Scheme for Engine Components, NATO, RTO-MP-17. Corfu, Greece : ,1998 [5] Harrison G F, Shepherd D P.Lifing philosophies for aero engine facture critical parts Aero Engine Reliability, Integrity and Safety, Proceedings of the Conference. Bristol, United Kingdom: Royal Aircraft Establishment, Farnborough,1991 [6] Bluml P , Broede J.Critical part’s life extension based on fracture mechanics The RTO AVI Workshop on Qualification of Life Extension Scheme for Engine Components. Corfu, Greece: ,1998

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