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Design of Hypersonic Scramjet Engine Operating between Mach 5 to Mach 9

机译：在5马赫至9马赫之间运行的超音速超燃冲压发动机的设计

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In recent years due to its high performance and efficiency, scramjet engine (also recognized as supersonic combustion ramjet) has gained remarkable significance in the field of hypersonic air-breathing propulsion. The idea behind this research is to develop a rapid design tool for quick estimation of scramjet configuration for hypersonic range of Mach 5 to Mach 9. This paper includes preliminary design of each scramjet component namely; inlet, isolator, combustor and nozzle. Based on the reliability and accuracy of available scramjet thrust estimation methods, stream thrust analysis method is selected for thrust estimation of designed scramjet engine. The paper focuses on establishing a generic MATLAB code which enables the user to design scramjet geometry at various design point conditions which would later be used for a variety of applications including missile propulsion systems and space access missions. The code is developed by integrating design algorithms of each scramjet component and stream thrust analysis. This code enables user to easily determine the configuration and design parameters of the scramjet based on user defined inputs such as altitude, free-stream Mach (between Mach 5 to Mach 9), exit Mach, inlet height and fuel. While, geometry of scramjet and stream thrust calculation results are obtained as output. Lastly, configuration and design parameters of designed scramjet is compared with existing scramjet engines to conclude and verify the results of the MATLAB code.
机译：近年来，由于其高性能和高效率，超燃冲压发动机（也被称为超音速燃烧冲压发动机）在高超音速呼吸推进领域中已获得了显着的意义。这项研究的思想是开发一种快速设计工具，用于快速估计超音速范围从5马赫到9马赫的超燃冲压发动机的构型。入口，隔离器，燃烧器和喷嘴。根据现有超燃冲压发动机推力估算方法的可靠性和准确性，选择流式推力分析方法对设计超燃喷气发动机推力进行估算。本文着重于建立通用的MATLAB代码，使用户能够在各种设计点条件下设计超燃冲压发动机的几何形状，随后将其用于包括导弹推进系统和太空访问任务在内的各种应用中。该代码是通过集成每个超燃冲压发动机组件的设计算法和流推力分析而开发的。此代码使用户可以根据用户定义的输入轻松确定超燃冲压发动机的配置和设计参数，例如高度，自由流马赫数（介于5马赫至9马赫之间），出口马赫，进气口高度和燃料。同时，获得超燃冲压发动机的几何形状和推力计算结果作为输出。最后，将已设计的超燃冲压发动机的配置和设计参数与现有的超燃冲压发动机进行比较，以得出结论并验证MATLAB代码的结果。

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