The invention relates to the technical field of engine air inlets, in particular to a backpack type embedded air inlet and a flow control method thereof. According to the flow control method of the backpack type embedded air inlet channel, low-energy flow in a thick boundary layer developed on a long aircraft fuselage is discharged out of the air inlet channel through the combination of two flow control methods of installing a spoiler on the back of the aircraft fuselage and forming boundary layer suction holes in an inner flow channel of the air inlet channel. And the performance of the air inlet channel is prevented from being deteriorated due to suction. Compared with the prior art, the device has the advantages that the sucked boundary layer of the fuselage of the aircraft is greatly reduced, low-energy fluid in the side edge vortex of the backpack embedded air inlet is effectively sucked, the distortion index is greatly reduced, the structure is simple, the device can be integrated with a downstream engine, and the device has good engineering application value.
本发明涉及发动机进气道技术领域,具体涉及一种背负式埋入式进气道及其流动控制方法。所述背负式埋入式进气道的流动控制方法是通过在飞行器机身背部安装扰流片,以及在进气道内流道设置边界层抽吸孔这两种流动控制方法组合,将较长飞行器机身发展的厚边界层内低能流排移出进气道外,防止被进气道吸入使得进气道性能恶化。相较于现有技术,本发明极大减少吸入的飞行器机身边界层,并有效吸除背负式埋入式进气道侧棱旋涡内的低能流体,大幅降低其畸变指数,结构简单且能够与下游发动机一体化,具有良好的工程应用价值。
Backpack type embedded air inlet channel and flow control method thereof
一种背负式埋入式进气道及其流动控制方法
2024-06-11
Patent
Electronic Resource
Chinese
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