Airfoil type wind tunnel test bench

Abstract

The invention is suitable for the field of airfoil wind tunnel test equipment, and particularly relates to an airfoil type wind tunnel test bench, which comprises an experiment flat plate, a six-component measuring balance an upper anti-interference airfoil profile and a lower anti-interference airfoil profile; a rotation adjusting flat plate is rotatably arranged on the experiment flat plate, and accurate angle adjustment is completed by using a dial arranged on the rotation adjusting flat plate, so that the airfoil wind tunnel test bench is used for wind tunnel tests under different attack angles; the six-component measuring balance is used for measuring force through a plurality of force measuring rods arranged between the experiment flat plate and the six-component measuring balance, the force measuring rods are used for transmitting the force borne by the measured empennage in the wind tunnel test to the six-component measuring balance, and the force is measured through the six-component measuring balance; and the upper anti-interference airfoil profile and the lower anti-interference airfoil profile are respectively arranged at two sides of the tested airfoil profile and are used for preventing an induced vortex from being formed on the upper and lower end surfaces of the airfoil profile due to the flow velocity and pressure difference on two sides of the airfoil profile to influence a two-dimensional airfoil profile test result; and the upper anti-interference airfoil profile is fixed through a fixing device located on the side face in the incoming flow direction and used for reducing the influence of the fixing device on the flow field of the test section.

Description

technical field [0001] The invention relates to the field of airfoil wind tunnel test equipment, in particular to an 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. [0003] 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; 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 [0004] The object of the presen...

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Problems solved by technology

[0003] 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; 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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