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A Plasma Suction Device for Wing Drag Reduction

A plasma and suction device technology, applied in the field of plasma suction devices, can solve the problems of poor drag reduction effect, exacerbated flow instability on the wing surface, drag reduction effect, etc.

Active Publication Date: 2022-01-07
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the continuous switching between the high-frequency "suction-blowing" process may aggravate the instability of the wing surface flow, and the overall drag reduction effect is not as good as that of a single suction or blowing process.

Method used

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  • A Plasma Suction Device for Wing Drag Reduction
  • A Plasma Suction Device for Wing Drag Reduction

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0020] A kind of plasma suction device that can be used for wing drag reduction of the present invention, as Figure 1-2 As shown, an insulating housing 1 is included, and the center of the insulating housing 1 is provided with a through funnel-shaped cavity, and the wide mouth end of the funnel-shaped cavity in the insulating housing 1 is provided with a ring-shaped first insulating medium layer 2. A disk-shaped second insulating dielectric layer 8 is provided at the center of the first insulating dielectric layer 2, and there is an annular gap between the second insulating dielectric layer 8 and the first insulating dielectric layer 2, and the annular gap forms a suction Holes 5 and suction holes 5 have smooth edges; the first insulating medium layer 2 is connected to the second insulating medium layer 8 through several connecting struts 7;...

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Abstract

The invention discloses a plasma suction device that can be used for drag reduction of airfoils. It includes an insulating shell, and a funnel-shaped cavity is provided at the center of the insulating shell. The wide mouth of the funnel-shaped cavity in the insulating shell is The end is provided with an annular first insulating medium layer, the center of the first insulating medium layer is provided with a disc-shaped second insulating medium layer, and there is an annular gap between the second insulating medium layer and the first insulating medium layer , the annular gap forms a suction hole, the first insulating medium layer is connected to the second insulating medium layer through several connecting rods; the narrow end of the funnel-shaped cavity in the insulating shell is provided with a one-way exhaust valve; the first insulating medium layer The lower surface of the medium layer is radiated with a lower electrode, and an upper electrode is buried inside the second insulating medium layer; the upper electrode is grounded, and the lower electrode is connected with a negative DC pulse high voltage. The plasma suction device of the invention can reduce the frictional resistance on the surface of the wing.

Description

technical field [0001] The invention belongs to the technical field of plasma exciters, and in particular relates to a plasma suction device which can be used for drag reduction of wings. Background technique [0002] At present, drag reduction based on plasma actuators is mostly to arrange a series of plasma actuator arrays on the upper surface of the wing or flat plate along or parallel to the incoming flow direction. By reducing the number of low-velocity strips of the vortex coherent structure in the unit area of ​​the wing surface, the development of the turbulent burst process is hindered, the turbulent burst intensity is reduced, and the laminar flow state of the surface flow is delayed. For millisecond pulsed plasma actuators, the induced jet velocity is low, and it is difficult to produce obvious suppression effects; nanosecond pulsed plasma actuators can instantaneously generate strong shock waves with strong energy, but often aggravate laminar flow transition If ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64C3/36B64C23/04
CPCB64C3/36B64C23/04
Inventor 郑博睿翟阳付钰伟赵太飞杨玉峰武斌张雯葛畅
Owner XIAN UNIV OF TECH
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