某型涡扇发动机的性能改型方案研究

Research on Performance Modification of A Certain Turbofan Engine

为了补充小涡扇发动机系列化改型研究内容的匮乏,基于国内外涡扇发动机的研究现状及发展趋势,选定某小型涡扇发动机为研究对象对其进行性能优化研究。借鉴国外航空发动机的改型思路,采用不同的优化算例辅以不同的程序工具对某型发动机进行了性能优化的改型研究,在此基础上讨论了发动机采用非冷却式涡轮或冷却式涡轮对发动机性能的影响,最后通过分析比较得出某型涡扇发动机性能改型优化的研究结论。

In order to supply short of researchment on series of performance modification of small turbofan engine, a certain small turbofan engine was selected as an investigating subject based on the current situation and the future development trend of the performance research on aircraft engine. Referring to the foreign ideas of modification of aircraft engine, different optimized examples and different programs for researching modification projects were used which aimed at optimizing the performance of turbofan engine. The different influence on the performance of an engine with or without cooling turbine was also dis- cussed. In the end the research conclusion about performance modification of a certain turbofan engine was listed through analysing.