高速飞行器用射流预冷却涡轮基发动机性能模拟

根据预冷却涡轮基发动机的工作机理,建立了考虑变比热的计算预冷却涡轮基发动机性能的数学模型,编制了相应的计算软件;并以某小型涡喷发动机为例,沿飞行轨迹计算分析了射流预冷却对发动机性能的影响。从计算结果可以看出,采用喷流预冷却方式,可以大大扩展常规涡轮喷气发动机的工作范围,能够满足高速飞行器或两级入轨飞行器第一级动力装置的要求。

Performance Simulation of the Mass Injection Pre-cooled TBCC Engine for Hypersonic Vehicles

According to the work mechanism of the pre-cooled TBCC (Turbine Based Combined Cycle), the pre-cooled TBCC function mathematics model that considering calculation of the alterable specific heat was set up, and the homologous calculation software was programmed. Taking the certain small scaled turbojet as an example, the influence by mass injection and pre-cooled engine was calculated and analyzed along fly trajectory. The calculation results show that, similar to the SteamJet given by the United States, adopting water injection and pre-cooled method can expand the regulations turbojet work scope consumedly, and can satisfy the request of the supersonic aircraft or two-stage-to-orbit aircraft of the first stage equip.