Two-dimensional airfoil wind tunnel test bench

Abstract

The invention discloses a two-dimensional airfoil wind tunnel test bench. The two-dimensional airfoil wind tunnel test bench comprises: a base horizontally and fixedly mounted on the floor of a wind tunnel test section, wherein the base comprises a base main body and two slopes, the two slopes are respectively arranged at two ends of the base main body in the vertical direction, and the base mainbody and the floor form transition through the slopes; two separators which are vertically oppositely arranged on the base main body, wherein curve transition is arranged between the air inlet ends and the air outlet ends of the two separators; a cover plate horizontally arranged at the top portions of the separators; a rod-type balance having one end rotationally passing through one of the separators and connected with the airfoil between the two separator; an angle regulation mechanism fixedly installed at the outer sides of the separators, detachably connected at the other end of the rod-type balance and configured to regulate the angle of attack of the airfoil; and a wind speed sensor arranged between the two separators. The two-dimensional airfoil wind tunnel test bench can ensure accurate two-dimensional airfoil experiments in the wind tunnel.

Description

technical field [0001] The invention belongs to the technical field of airfoil wind tunnel tests, in particular to a two-dimensional airfoil wind tunnel test stand. Background technique [0002] During the design and development of aircraft wings or negative-lift airfoils for racing cars, wind tunnel tests for two-dimensional airfoils are required. In the two-dimensional airfoil wind tunnel test, there are mainly the following problems: due to the flow velocity and pressure difference between the upper and lower airfoils, induced vortices are formed on both sides of the airfoil, which affects the test results of the two-dimensional airfoil; the flow field is unstable, resulting in test results Inaccurate. In addition, the existing two-dimensional airfoil wind tunnel test cannot adjust the angle of attack of the airfoil at will, and the airfoil often needs to be reinstalled when the angle of attack of the airfoil needs to be changed. Contents of the invention [0003] One...

AI Technical Summary

Problems solved by technology

In the two-dimensional airfoil wind tunnel test, there are mainly the following problems: due to the flow velocity and pressure difference between the upper and lower airfoils, induced vortices are formed on both sides of the airfoil, which affects the test results of the two-dimensional airfoil; the flow field is unstable, resulting in test results Inaccurate

In addition, the existing two-dimensional airfoil wind tunnel test cannot adjust the angle of attack of the airfoil at will, and it is often necessary to reinstall the airfoil when the angle of attack of the airfoil needs to be changed

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