超燃冲压发动机性能的初步分析

A Preliminary Study on Hypersonic Airbreathing Engine Performance

超燃冲压发动机是发展高超声速技术的关键,以其为动力装置的高超声速巡航导弹、高超声速飞机和空天飞机对于国防安全、未来空间作战和航天运输都有重要意义。用热力循环的方法对超燃冲压发动机的性能作了初步的分析,建立了超燃冲压发动机准一维性能计算分析模型,并分析了一些影响参数对发动机效率的影响。准一维的性能计算方法可作为多层次高超声速动力推进系统性能计算模型的第一层次的计算模型,具有简单、快捷的特点。影响参数的分析可应用于高超声速飞行器概念设计阶段飞行器主要的设计参数和飞行参数的计算和确定。

Scramjet is a key technology in developing the hypersonic vehicle. Hypersonic missiles, aircraft and aerospace plane are based on scramjet and significantly important to future space battle and transportation. Thermodynamic cycle efficiency of hypersonic airbreathing engine is analyzed using thermal engine closed cycle analysis, a quasi one-dimensional performance calculation model of hypersonic airbreathing engines is developed by one dimensional flow approaches using the entire set of control volume conservation equations, and the influence of some potentially important parameters are analyzed. The quasi one-dimensional performance calculation approach can be used as a first leveled calculation model in the performance calculation model of multi-leveled hypersonic dynamic propulsion system. It＇s very simple and efficient, and can be used to confirm some major parameters and flight parameters in the phase of conceptual design of the hypersonic aircraft. So this model has a very important practical value to the primary development of the feasibility scheme of the hypersonic aircraft.