液氢推进剂预冷却空气涡轮冲压发动机性能模拟

为提高常规空气涡轮冲压发动机性能并扩展工作范围,加入液氢预冷系统,使用液氢作为预冷剂及推进剂,建立了使用液氢作为燃料的预冷空气涡轮冲压发动机性能计算模型。在给定航迹和调节计划下计算并分析了高空高速、低空低速下发动机的性能。仿真结果显示加入预冷器、使用液氢作为燃料可以极大的扩展ATR发动机的工作范围,并在整个飞行包线内极大的提高了ATR发动机的性能。

Study on Performance Simulation of Liquid Hydrogen Propellant Air-Turbo-Ramjet with Pre-cooler

In order to expand the operation range and improve the engine performance of air-turbo-ramjet,based on the normal air-turbo-rocket,a numerical model to calculate air-turbo-ramjet with pre-cooler which used liquid hydrogen as coolant and propellant was set up.On the given flight track and control law,the high altitude engine performance at high Mach number and low altitude engine performance at low Mach number were calculated and analyzed.The result of simulation showed that the operation range was expanded and the performance was improved greatly through out the flight envelope by adding pre-cooler to the air-turbo-ramjet and use liquid as propellant.