一种提升高速进气道流量的复合涡流发生器及设计方法

By designing a composite vortex generator, combining a reverse-mounted ramp-type vortex generator with a streamlined vortex generator, the problem of insufficient airflow capture in the air intake of high-speed aircraft was solved, achieving a wider range of airflow control and stronger airflow capture capability, thereby improving engine performance.

CN120819436BActive Publication Date: 2026-07-17BEIJING INST OF TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING INST OF TECH
Filing Date
2025-06-03
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional vortex generators cannot effectively improve flow capture capability in the air intake of high-speed aircraft, especially in integrated designs where boundary layer thickening leads to flow blockage, affecting engine performance.

Method used

A composite vortex generator is designed by combining a ramp-type vortex generator installed in reverse with a streamlined vortex generator to form opposing and flowing vortex pairs, thereby enhancing the transport of high-energy fluid to the boundary layer and improving flow capture capability.

Benefits of technology

Under high-speed incoming flow conditions, the composite vortex generator significantly improves the intake flow capture, enhances the control range and stability of the vortex generator, reduces the number of vortex generators, reduces parasitic drag, and improves engine performance.

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Abstract

一种提升高速进气道流量的复合涡流发生器及设计方法,属于高速飞行器进气道流动控制领域。本发明由反斜坡型涡流发生器与流线型涡流发生器组成。反斜坡型涡流发生器包括一个斜面、两个侧面和一底面。流线型涡流发生器左右两侧对称,单侧流线型涡流发生器包括一斜面、一外侧面、两个内侧面和一底面。流线型涡流发生器的左右两侧之间相隔一定的安装距离,流线型涡流发生器安装于所述反斜坡型涡流发生器的两侧。涡流发生器的前缘靠近来流的方向并设置于高速进气道前方,涡流发生器用于提升高速进气道流量捕获能力。反斜坡型涡流发生器与流线型涡流发生器协同作用,在周向更宽范围内,实现高密流流体向边界层输运,提升组合发动机的单位推力和比冲。
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