Intelligent wind tunnel with variable section of test section

Abstract

The invention relates to an intelligent wind tunnel with a variable section of a test section, wherein the inlet of the test section of the wind tunnel is connected to a contraction compressed gas retaining structure of a contraction section, and the outlet of the test section is connected to a steady flow section front end structure of a steady flow section; the test section is integrally in a rectangular structure and is composed of upper and lower two parts which are nested with each other, the upper part can move up and down in the lower part under the action of the telescopic structure, and the height of the lower end surface of the upper part is not greater than the distance from the upper ends of the outlet and the inlet to the top when the test section dose not stretch out and drawback; a rubber airbag plate is arranged on the inner wall side of the cavity of the test section, a plurality of rubber airbags are arranged on the rubber airbag plate, the inflation and deflation states of each rubber airbag are controlled by an air pump and a corresponding control valve; the above-mentioned telescopic structure, the air pump and the control valve are all connected to a controlsystem in a wind tunnel control room. The wind tunnel can automatically change the cross-sectional area and volume according to various data of the real scene as needed, which realizes intelligent useof the wind tunnel, and completes various pneumatic tests efficiently and reliably.

Description

technical field [0001] The invention relates to the technical field of wind tunnels, in particular to an intelligent wind tunnel with a variable test section section. Background technique [0002] The construction and development of wind tunnel equipment is closely related to the development of aerospace vehicles. In the early days of the development of aerospace vehicles, the exploration of aerodynamic problems led to the birth of wind tunnels. According to incomplete statistics, there are currently more than 300 production-type wind tunnels built in various countries around the world. The wind tunnel is an important ground test equipment for aerodynamic research and a basic research facility to ensure a country's aerospace industry is in a leading position. Facing fierce competition in the aerospace field in the new century, developed countries in the world have strengthened the development of new concept wind tunnels, reformed the operation mechanism of wind tunnels, an...

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Problems solved by technology

[0003] Although the above studies are all focused on accurate simulation and cost reduction, they have not studied the variability of the wind tunnel itself. Once the existing wind tunnel is successfully constructed, it will be special, and the volume and cross-sectional area of ​​the wind tunnel cannot be changed. , can only test a specific type of objects, therefore, the study of intelligent wind tunnel is very necessary

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