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Air inlet channel

A technology of air inlet and air inlet, which is applied in the field of aircraft, can solve the problems of disturbing the internal flow field of the air inlet, external gas backflow, poor aerodynamic performance and stability of the air inlet, etc., so as to avoid aerodynamic performance and stability, The effect of reducing outlet distortion and simple structure

Pending Publication Date: 2022-03-25
杭州牧星科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problem that external gas backflow easily occurs at the overflow groove of the existing air inlet, disturbing the internal flow field of the air inlet, and resulting in poor aerodynamic performance and stability of the air inlet, the present invention provides an air inlet, which It can effectively prevent the backflow of external air and improve the aerodynamic performance and stability of the air inlet

Method used

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Experimental program
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Embodiment 1

[0037] combined with Figure 1-6 , the present embodiment provides an air inlet, comprising: an air inlet body 1, the air inlet body 1 has an air inlet 2 and an air outlet 3, and an overflow hole 4 is provided on the inner wall of the air outlet 3 The overflow hole 4 is provided with an elastic cover plate 5 , the overflow hole 4 and the elastic cover plate 5 are slidably connected, and the elastic cover plate 5 is used for automatic closing and opening of the overflow hole 4 .

[0038]In the present application, the initial state of the elastic cover plate 5 refers to the state in which the elastic cover plate 5 closes the overflow hole 4 . In a normal working state, when gas enters the overflow hole 4, a certain air pressure will be generated, and the elastic cover 5 will deform downward under the action of the air pressure, so that the elastic cover 5 slides toward the bottom away from the overflow hole 4, Form an airflow outlet to discharge the gas; when no gas flows out,...

Embodiment 2

[0041] Compared with the technical solution of Embodiment 1, the air inlet of this embodiment can be improved as follows: the elastic cover plate 5 has a fixed end and a sliding end oppositely arranged, and the fixed end of the elastic cover plate 5 is connected to the One end of the overflow hole 4 is fixedly connected, and the sliding end of the elastic cover plate 5 is slidably connected with the other end of the overflow hole 4 , and the elastic cover plate 5 is arched toward the overflow hole 4 .

[0042] When gas enters the overflow hole 4, a certain air pressure will be generated, and the elastic cover plate 5 will deform downward under the action of the air pressure, so that the sliding end of the elastic cover plate 5 slides toward the bottom of the overflow hole 4, forming an air outlet. The gas is discharged; when no gas flows out, the elastic cover plate 5 returns the sliding end of the elastic cover plate 5 separated from the overflow hole 4 to the initial state of...

Embodiment 3

[0044] combined with Figure 1-2 , a kind of air inlet of the present embodiment, compared with the technical solution of embodiment 1, can be improved as follows: the outer periphery of described overflow hole 4 is vertically provided with a plurality of baffles 6, and a plurality of baffles 6 6 to form a guide channel, the elastic cover 5 has a fixed end and a sliding end oppositely arranged, the fixed end of the elastic cover 5 is fixedly connected with the partition 6 located on the same side of the fixed end, the elastic cover The sliding end of the plate 5 is slidably connected with the partition plate 6 located on the same side of the sliding end.

[0045] The initial state of the elastic cover plate 5 means that the flow guide channels formed between the elastic cover plate 5 and the plurality of partition plates 6 are closed to realize the closed state of the overflow hole 4 . When gas enters the overflow hole 4, a certain air pressure will be generated, and the elas...

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Abstract

The invention discloses an air inlet channel, and relates to the technical field of aircrafts, the air inlet channel comprises an air inlet channel body, the air inlet channel body is provided with an air inlet and an air outlet, the inner wall of the air outlet is provided with an overflow hole, the overflow hole is provided with an elastic cover plate, and the overflow hole is slidably connected with the elastic cover plate; and the elastic cover plate is used for automatically closing and opening the overflow hole. Compared with an air inlet channel provided with an overflow groove in the prior art, the air inlet channel can effectively avoid the problem that the aerodynamic performance and stability of the air inlet channel are reduced due to the fact that external air flows back into the air inlet channel through the overflow hole while the distortion of the outlet is reduced.

Description

technical field [0001] The invention relates to the technical field of aircraft, in particular to an air inlet. Background technique [0002] The air intake is an important part of the propulsion system of the aircraft. As a key component of the coupling between the aircraft precursor and the ramjet, it is in direct contact with free-flow air. The main function of the intake port is to efficiently provide sufficient air volume to the engine under different working conditions, and decelerate the inlet air to the intake speed required by the compressor with the minimum loss of capacity. [0003] In order to reduce the distortion of the flow field caused by the shock wave disturbance, make the outlet air flow uniform, and cool the rear-end equipment, an overflow groove is often set up in the inlet channel to allow the boundary layer air flow to flow out from the slotted position. However, when this method encounters a back pressure at the overflow port, the external air will f...

Claims

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Application Information

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IPC IPC(8): B64D33/02
CPCB64D33/02B64D2033/0266
Inventor 谢冰心董永涛周平
Owner 杭州牧星科技有限公司