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首页> 外文会议>International Conference of Aerospace and Mechanical Engineering >Investigation of Variable Geometry Intake to Mitigate Unwanted Shock-Shock Interactions in a Hypersonic Air-Breathing Propulsion Device
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Investigation of Variable Geometry Intake to Mitigate Unwanted Shock-Shock Interactions in a Hypersonic Air-Breathing Propulsion Device

机译：变量几何摄入，减轻超声波空气呼吸推进装置中的不需要的冲击冲击相互作用

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摘要

Recently there has been a resurgence of interest in achieving practical hypersonic flight especially since China and Russia has announced successful demonstration of their military technology. The key enabler for hypersonic is the scramjet engine as the air breathing propulsion device. Engineering design of a scramjet intake is crucial since unwanted shock-shock interactions inside the intake could impede safe combustion process. In this study, we demonstrate that minimal geometry modification of the intake could significantly increase its performance. A generic scramjet intake that performs sub optimally is shown to benefit greatly by having its cowl deflected inwards at small degree. Pressure-sensitive paint measurement showed that peak pressure due to adverse shock-shock interactions at cowl tip has been reduced significantly.
机译：最近，在实现实际超音速飞行中，尤其是自俄罗斯宣布成功示范其军事技术的兴趣。 超声波的关键推动器是斯普拉克喷头作为空气呼吸推进装置。 由于摄入内部的不需要的冲击冲击相互作用，因此扰乱摄入的工程设计至关重要，可能会阻碍安全的燃烧过程。 在这项研究中，我们证明了摄入的最小几何修改可以显着提高其性能。 通过在小程度上向内向内偏转，普通刻痕度扰乱摄入量显示出优质的副本以极大的方式受益匪浅。 压敏涂料测量表明，由于涡流尖端的不利冲击冲击相互作用导致的峰值压力显着降低。

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