Swirling flow air inlet embedded type air inlet, a working mode thereof and an aircraft

Abstract

The embodiment of the invention discloses a swirling flow air inlet embedded type air inlet, a working mode thereof and an aircraft. The swirling flow air embedded type air inlet comprises an embeddedtype air inlet arranged at the belly of the projectile body and a swirling flow control device arranged at the belly of the projectile body and positioned at the front end of the air inlet; the swirling flow control device is used for changing the flow direction of the airflow, the airflow fluid structure and the airflow energy distribution, so that the swirling flow type airflow fluid with uniform energy distribution is formed before the airflow enters the air inlet. The swirling flow air inlet embedded type air inlet, the working mode thereof and the aircraft solve the problem that the existing method for reducing the influence of the low-energy boundary layer on the performance of the air inlet cannot completely solve the problem that the performance of the embedded air inlet is influenced due to the fact that the separation packet formed by the low-energy boundary layer on the front flow surface of the air inlet cannot be completely solved.

Description

technical field [0001] The present application relates to but not limited to the technical field of aircraft air intakes, especially a swirl air intake embedded air intake and its working method, as well as aircraft. Background technique [0002] In order to meet the requirements of low flight resistance, high stealth performance and multi-platform mounting of aviation weapons, buried air inlets with small external dimensions, low resistance and high stealth are widely used in aviation weapons. [0003] As an important part of the propulsion system of the aircraft, the performance of the air intake will directly affect the combat performance, while the performance of the buried air intake is greatly affected by the low-energy incoming flow boundary layer, especially in the state of small flow. Under the influence of the reverse pressure gradient (i.e., the negative pressure generated by the engine), the low-energy flow boundary layer inhaled by the airway will form a large s...

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Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the embodiment of the present invention provides a swirl intake embedded air intake and its working method, as well as an aircraft, so as to solve the existing problem of reducing the influence of low-energy boundary layer on the performance of the air intake. In this way, the performance of the buried air intake cannot be completely resolved due to the separation of the low-energy boundary layer formed on the air guide surface before the air intake.

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