基于技术参数评估的涡扇发动机总体性能设计分析

为了充分掌握各代涡扇发动机技术参数水平及其发展趋势，统计包括现役型号在内的15台2～4代涡扇发动机的总体性能参数、循环参数和部件参数，采用考虑涡轮冷却的总体性能计算和重量预测相结合的发动机技术参数综合评估模型并利用计算程序绘制趋势曲线，评估技术参数的发展趋势，结果表明技术参数逐年改善的趋势是比较稳定的，并用曲线趋势外推法取得下一代关键参数的定量数据。在此基础上探索下一代高推重比涡扇发动机可能的总体性能方案，为下一代先进涡扇发动机的预研和设计提供参考。

Performance Analysis of Turbofan Engine Design Based on Technical Parameters Evaluation

In order to fully master the level and evolving trend of technical parameters of various generations tur-bofan engine ,the technical parameters of fifteen foreign typical turbofan engines from 2 to 4 generations ,such as general performance parameters ,cycle parameters and components parameters are compiled .The models and corresponding programs for performance calculations considering turbine cooling and evaluations of size and weight of turbofan engine are used .By calculation program the trend of the performance curves are drawn ,and then the technical parameters of the turbofan engine are evaluated .Results indicate that the evolving trends of the technical parameters are stabilized ,and the key parameters of next generation are obtained using extrapola-tion of curve .At this foundation ,the possible engine integration design directions of next generation advanced turbofan engine are explored .The results can be the reference for advanced turbofan engine design in next gener-ation .