北京航空航天大学学报 ›› 2009, Vol. 35 ›› Issue (4): 464-467.

• 论文 • 上一篇    下一篇

航空发动机断裂关键件失效率分析

杜少辉1, 洪 杰2, 谢里阳3   

  1. 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
  • 收稿日期:2008-05-14 出版日期:2009-04-30 发布日期:2010-09-16
  • 作者简介:杜少辉(1963-),男,山东荣城人,博士生,dsh7231@TOM.com.

Failure risk analysis for fracture critical aero-engine components

Du Shaohui1, Hong jieXie Liyang2   

  1. 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
  • Received:2008-05-14 Online:2009-04-30 Published:2010-09-16

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).

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).

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