CAJ | 학술논문

棘轮离合器是超越离合器的一种，具有尺寸小、重量轻、承载能力高、传动平稳、寿命长、啮合可靠性高的特点，在航空发动机传动系统中应用十分广泛。本研究分析了发动机起动不成功的故障现象，根据故障树分析方法查找故障原因，阐述了棘轮离合器工作原理，详细分析了故障产生的原因。结果表明：发动机起动不成功的主要原因是双速传动机构失效，棘爪疲劳裂纹是导致双速传动机构失效的主要原因，棘爪产生疲劳裂纹是棘爪存在制造缺陷和S含量超标，提出了改进方法和预防措施，对发动机的修理具有参考价值。
극륜리합기시초월리합기적일충，구유척촌소、중량경、승재능력고、전동평은、수명장、교합가고성고적특점，재항공발동궤전동계통중응용십분엄범。본연구분석료발동궤기동불성공적고장현상，근거고장수분석방법사조고장원인，천술료극륜리합기공작원리，상세분석료고장산생적원인。결과표명：발동궤기동불성공적주요원인시쌍속전동궤구실효，극조피로렬문시도치쌍속전동궤구실효적주요원인，극조산생피로렬문시극조존재제조결함화S함량초표，제출료개진방법화예방조시，대발동궤적수리구유삼고개치。
With many advantages, ratchet clutches are widely used in the drive systems of aero engines. The engine of an aircraft couldn’ t start up. The failure cause was analyzed based on fault tree analysis method and the operating principle of ratchet clutch. The results show that the main cause of the startup failure of the engine was the failure of the two-speed drive system. The main cause of the two-speed drive system failure was the fatigue cracking of the pawl. Manufacture defects and excessive sulphur promoted the initiation of the fatigue crack of the pawl. Some suggestions to prevent this failure were put forward.