一种典型民用涡扇发动机安全性与适航验证研究

Safety and Airworthiness Verification on a Typical Civil Turbofan Engine

关键词:  发动机安全性  适航验证  符合性方法  超转  包容性

Key words:  Engine safety  Airworthiness Verification  Method of compliance  Overspeed  Containment

摘要:

基于某一典型民机动力装置——PX10涡扇发动机，本文详细介绍了该型号在合格审定过程中针对FAR33部适航规章所要求进行吞鸟、吸冰、振动、超转、叶片包容等各项考核所需进行的试验验证和安全性分析过程。整个适航符合性验证过程涵盖载荷谱分析、强度计算、工况模拟试验等技术手段，各项试验结果均满足对应规章条款的通过准则，表明该型发动机在设计与制造环节具备充足的安全裕度。针对国内商用发动机鲜有适航取证成功案例的现状，本文首次全面阐述了完整的民用航空发动机适航符合性验证过程，为国内发动机厂商产品的适航取证工作提供了借鉴和指导。

Abstract:

Based on a typical civil aircraft powerplant unit——the PX10 turbofan aero engine， this paper elaborates the primary test demonstration and safety analysis process in terms of bird and hail ingestion， vibration， overspeed， and blade containment， etc. The entire airworthiness verification process covers the load spectrum analysis， stress calculation and physical tests under simulated and real operating conditions， and all the results show the compliance to the success criteria of each item of FAR Part 33， which implies the sufficient safety margin was achieved during the design and manufacture procedures of PX10 engine. Since there are few successful examples in indigenous aero engine certification process， the illustrations presented here could be a helpful guideline to the engine airworthiness certification procedure of domestic engine manufactures.