论文部分内容阅读
为了研究射流预冷却涡轮发动机(SteamJet)的发动机特性,建立了喷水预冷却的热交换系统计算、物性修正计算和发动机部件特性修正计算的数学模型,建立了基于双轴混排加力式涡扇发动机的Steam-Jet发动机性能计算模型,并编制了相应的计算程序.计算分析了SteamJet发动机在不同风扇进口总温下沿飞行轨道的特性,以及喷水预冷却对发动机加力燃烧室的影响,并对SteamJet发动机风扇进口总温进行了合理的选择;对加力式SteamJet发动机进行了高度速度特性的计算和分析.结果表明,SteamJet发动机可大幅度拓宽涡轮发动机的工作范围,与非加力式SteamJet发动机相比,加力式SteamJet发动机具有更好的推力特性,能够满足高超声速飞行的需求.
In order to study the engine characteristics of a jet-cooled turbine engine (SteamJet), a mathematical model for the calculation of the heat exchange system for spray precooling, the correction of physical properties and the correction of the characteristics of the engine components was established. A two- Fan engine Steam-Jet engine performance calculation model and the preparation of the corresponding calculation program.Calculated SteamJet engine at different fan inlet total temperature along the flight path characteristics and pre-cooling water jet engine afterburner impact , And made a reasonable choice of the total inlet temperature of the SteamJet engine fan.The calculation and analysis of the high speed steam engine performance of the SteamJet engine showed that the SteamJet engine can greatly expand the working range of the turbine engine, Compared to the SteamJet engine, the Versatile SteamJet engine has better thrust characteristics to meet the needs of hypersonic flights.