某微型涡喷发动机地面试车故障分析及措施

陈巍; 杜发荣; 丁水汀; 李云清

某微型涡喷发动机地面试车故障分析及措施

北京航空航天大学交通科学与工程学院,北京 100191

基金项目: 国家985工程项目

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- 文章访问数: 1929
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- 被引次数: 0
出版历程
- 收稿日期: 2010-03-18
- 修回日期: 2010-07-15
- 刊出日期: 2011-04-28

Faults analysis and solution in ground operation of a micro turbojet engine

School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics,Beijing 100191,China

摘要

摘要: 针对某微型涡喷发动机的地面试车实验过程,介绍了发动机结构,地面实验台的搭建,测试系统的布置,试车线路的制定,并重点分析了试车过程中遇到的多种故障现象及解决办法.这些故障现象包括:点火可靠性、火焰拖尾、转速悬挂、转静件碰摩、尾喷管翼子板焊缝开裂、涡轮端轴承热失稳、发动机喘振、电控程序调试等.实验结果表明:进一步降低涡轮端轴承热负荷、改进国产压气机叶轮材料机械性能、提高工艺水平,是目前微型涡喷发动机设计中亟待解决的问题;其他故障形式均可以通过采取相关措施予以克服.
- 微型涡喷发动机 /
- 转子 /
- 振动 /
- 碰摩 /
- 故障分析 /
- 地面试车
Abstract: Based on series of ground operations of a newly designed micro turbojet engine,this paper presented the establishment of engine structure,process of test rig,configurations of measure system,confirmation of engine running plan,and put stress on analyzing the reasons of all the faulty phenomena met in engine operations and their solutions.These phenomena include ignition reliability,flame localization behind the nozzle too much,speed hang-up,rubbing faults between rotor and stator,cracks of welding sews of wing fender in the nozzle,failure of bearing in the side of turbine because of thermal instability,engine surge and debugging of electronic-control programs.The ground operation results show that reducing thermal load of the bearing in the side of turbine,improving mechanical characteristics of the compressor impeller's materials made in China,and promoting manufacturing level are main missions to be finished so far in the design of micro turbojet engine,and other faults stated in the paper can be overcome by appropriate methods.
- micro turbojet engine /
- rotor /
- vibration /
- rub /
- faults analysis /

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