A Modular Closed Type Low-speed DC Wind Tunnel

Abstract

The invention relates to the field of aeronautical engineering dynamics, and discloses a modular closed low-speed DC wind tunnel, which includes a tunnel structure and a power system. The tunnel structure includes a tunnel bracket, and the tunnel bracket is sequentially provided with an air intake section and a test section. and the expansion section; the power system includes the fan, the mobile slide rail and the power support; the hole structure and the power system are connected through the mobile slide rail; the two sides of the outer wall of the fan are respectively welded with the fan connection lugs, and the fan connection lugs are connected to the mobile slide. The rail bolts are connected; the upper surface and the lower surface of the moving slide rail are respectively provided with several through holes, and the moving slide rail is connected with the power support. The overall structure of the present invention has the characteristics of modularization, reliable and stable performance, very convenient and quick operation, high practicability and adaptability, both the cave structure and the power system adopt independent movable brackets, which are light in weight; the operation vibration is small, the noise is low, The cave wall adopts a streamlined design that meets aerodynamic requirements, and the overall operation is more energy-saving and environmentally friendly.

Description

technical field [0001] The invention relates to the field of aeronautical engineering dynamics, in particular to a modular closed low-speed direct current wind tunnel. Background technique [0002] The wind tunnel is a special test equipment for aerodynamics in the field of aeronautical engineering. It is used to conduct aerodynamics tests of aircraft, and can be extended to aerodynamics tests of vehicles, high-speed trains, buildings, propellers and other products. [0003] Existing wind tunnels are generally divided into two categories. The first category is large-scale wind tunnels. The overall structure adopts a relatively thick steel structure and is heavy. In order to ensure safe use, it is often integrated with the building during installation, which cannot be easily installed. Mobile, its power unit is also single and cannot be replaced to improve the test performance; the second type is a miniaturized wind tunnel, which generally adopts a wooden structure. Although ...

AI Technical Summary

Problems solved by technology

[0003] Existing wind tunnels are generally divided into two categories. The first category is large-scale wind tunnels. The overall structure adopts a relatively thick steel structure, which is heavy in weight. In order to ensure safe use, it is often integrated with the building during installation, which cannot be convenient. Mobile, its power unit is also single and cannot be replaced to improve test performance; the second type is miniaturized wind tunnels, which generally use wooden structures. Although they are light in weight, the test section is very small, which greatly limits their test capabilities. and test performance. In addition, due to the insufficient strength of the wooden structure, the wooden structure is prone to vibration and excessive noise during the test, which limits the increase of the test wind speed.

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