A Plasma Flow Control Device for Drag Reduction of Airships in Near Space

Abstract

The invention discloses a plasma flow control device for near space airship resistance reduction. The plasma flow control device comprises a plurality of resistance reduction units, wires, a direct current power supply, a third insulation layer, a microwave generator and a first waveguide. The resistance reduction units comprise slot antennas, quartz glass plates, metal films, first insulation layers, second insulation layers, first electrodes, second electrodes and second waveguides. All the resistance reduction units are sequentially connected through the third insulation layer. The first waveguide is connected with second waveguides and the microwave generator. According to the plasma flow control device, microwaves are transmitted through the slot antennas below the quartz glass plates, uniform waves of a large area are formed on the surfaces of the quartz glass plates to excite surface wave plasma, and the plasma flow control device has the advantages of being high in the density of produced plasma, uniform in plane large area, high in discharging stability and repeatable in treatment process.

Description

technical field [0001] The invention relates to the field of plasma flow control, in particular to a plasma flow control device for drag reduction of an airship in adjacent space. Background technique [0002] Compared with aircraft or satellites, airships in near space have many advantages such as wide ground coverage, long time in the air, strong rapid response capability, low manufacturing and operating costs, reusable, fast upgrading, and good operating characteristics. Application prospects. Therefore, the development of near-space airships is of high urgency. When the flight resistance of the airship is reduced by 1%, the payload can be increased by about 10%, which can greatly improve the flying speed of the aircraft, increase the flight range, and increase the airship time of the airship. [0003] Plasma flow control is a new flow control technology, which has become an important research hotspot in the field of aerodynamics and aerothermodynamics in the world in r...

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Problems solved by technology

[0004] At present, methods such as surface DC corona discharge, atmospheric pressure uniform glow discharge, and surface dielectric barrier discharge, which are often used in plasma flow control technology, all have the disadvantages of the intensity of the generated plasma and the limited area, which cannot meet the requirements of airships in adjacent spaces. Requirements for drag reduction with large surface area of ​​hull

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