舰载机发动机腐蚀敏感性试验

为验证某航空涡扇发动机抗腐蚀能力,基于腐蚀敏感性试车台,设计了盐雾发生系统,制定了试验方案,完成了航空涡扇发动机腐蚀敏感性试验。结果表明,试验系统设计合理,试验方法可行,可为其他发动机开展腐蚀敏感性试验提供借鉴。试验后发动机主要零部件和成附件未发现明显腐蚀痕迹,主要流道件表面有不同程度的盐雾结晶附着。试验后发动机在相同换算推力下换算排气温度上升约 5.5%,性能衰减幅度较大,建议其他发动机开展腐 蚀敏感性试验时进行流道清洗以恢复发动机性能。

Carrier-based Aircraft Engine Corrosion Susceptibility Testing

In order to verify the corrosion resistance ability of a certain turbofan engine, based on the corrosion susceptibilitytest bay, a salt mist generating system is designed, a test scheme is formulated, and the corrosion susceptibility testing of theturbofan engine is completed. Experimental results show that the design of the testing system is reasonable, the test methodis feasible, it could be used to provide a reference for corrosion susceptibility testing of other turbofan engines. After testing,there is no obvious corrosion mark on the main spare parts and accessories of the engine, salt crystals are adhering to the sur.face of the main spare parts in the air runner. The converted exhaust temperature of the engine rises about 5.5% at the sameconverted thrust, there is more performance decline in the engine, and it is recommended that the runner should be cleanedto recover the performance of the engine when corrosion susceptibility testing is performed of other engines.