航空发动机钛火防护技术及试验验证方法  

Titanium Fire Protection Technology and Test Validation Method of Aero-Engine

作　　者：王巍巍[1] 陈玉洁[1] 高海红[1] 

机构地区：[1]中国燃气涡轮研究院,四川成都610500

出　　处：《燃气涡轮试验与研究》2013年第5期55-58,共4页Gas Turbine Experiment and Research

摘　　要：钛合金在航空发动机上应用广泛,特别是对于追求高推重比的军用发动机更是如此。但采用钛合金存在钛火风险,且钛火故障危害大、发生频率高。分析了钛火故障产生的原因,描述了故障导致的后果,并结合发动机上典型钛火故障,总结了4种较为有效的钛火防护设计技术。阐述了钛火防护技术的试验验证方法和目的,指出只有通过试验验证,才能确认钛火防护技术的安全有效。Titanium alloy is widely used on aero-engines, particularly on military aero-engines which aim at high thrust-to-weight ratio. However, it could be risky that titanium fire might occur which is frequent and destructive. The causes of titanium fire were analyzed and the consequences were described. Typical ti- tanium fire failures were presented and four kinds of effective protection design technology were summa- rized. Test objective and validation approaches were illustrated. It is pointed that safety and effectiveness of titanium fire protection technology could only be validated through tests.

关 键 词：航空发动机 钛合金 钛火防护技术 试验验证 推重比 

分 类 号：V235[航空宇航科学与技术—航空宇航推进理论与工程]