某航空发动机燃气发生器转静子刮磨分析研究

Analysis and Study on Rubbing between the Rotor and Stator in a Aviation Engine Gas Generator

某航空发动机在车台试验过程中出现了燃气发生器转子余转时间显著降低的问题,检查发现燃气发生器转静子存在刮磨。本文根据该发动机燃气发生器转子结构特点建立故障树,对可能导致故障的因素进行定位,经过逐步排查最终锁定故障原因,并分析研究产生故障的机理,提出提升转子同心度的有效措施,排除相关故障,以期为同类型航空发动机转静子刮磨研究提供借鉴。

A certain aircraft engine experienced a significant reduction in the remaining rotation time of the gas generator rotor during the vehicle test process.Upon inspection,it was found that there was scraping and wear on the gas generator stator.This article establishes a fault tree based on the structural characteristics of the gas generator rotor of the engine,locates the possible factors that may cause the fault,and gradually identifies the cause of the fault.After analyzing and studying the mechanism of the fault,effective measures to improve the rotor concentricity are proposed to eliminate related faults,in order to provide reference for the study of scraping and wear on the stator of similar aircraft engines.