摘要
在发动机直连管试车台上,模拟一定的飞行高度和飞行速度条件,对某型涡扇发动机进行了累计10 h以上的大推力状态寿命试车。采集了发动机性能参数和重要截面参数。对试验后的发动机进行分解,根据试验过程中发动机性能参数和重要截面参数变化情况,及发动机结构变化情况,总结出由于发动机部件性能老化引起的发动机总体性能下降规律。利用试车数据进行了故障诊断,验证了对发动机故障原因的分析,并给出了部件性能恶化量级,获得了对发动机工程实用具有指导意义的结论。
More than 10 hours of high-power state durability test was accumulated on a turbofan engine. The test is conducted on a directly connected tube test cell which can simulate different flight altitudes and flight speeds. Performance parameters and important cross-section parameters were collected and the en- gine was decomposed after the test. The law of engine performance degradation caused by the aging of the engine parts performance was summarized based on the changes of performance parameters, important cross-section parameters and the structure of engine. Engine air path fault diagnostics was conducted using some test data to give approximate value of some component performance deterioration. The method and the- oretic analysis are referential for engineering application.
出处
《燃气涡轮试验与研究》
北大核心
2013年第2期38-41,45,共5页
Gas Turbine Experiment and Research
关键词
涡扇发动机
寿命试车
总体性能
性能老化
气路故障诊断
turbofan engine
durability test
engine performance
performance deterioration
gas path fault diagnostics
