Half-mold blowing lift-augmentation wind tunnel test method and test device for transporter

Abstract

The invention discloses a transport plane half-mold blowing high lift wind tunnel test method and a test device. The test method comprises the following steps: step a, calibrating the influence of high-pressure air on balance load after passing through an air bridge; b, installing a test device and a test model, and adjusting the attitude angle of the test model to a zero point; c, calibrating a momentum coefficient; d, adjusting the attitude angle of the test model to a zero point, and collecting an initial reading; e, adjusting the wind speed to a test wind speed, and adjusting the blowing capacity coefficient to a test state; f, adjusting the attitude angle of the test model, and recording a balance signal, an attitude angle signal, a pressure sensor signal and a temperature sensor signal; step g, processing balance data; and step h, analyzing balance data. By the adoption of the half-mold blowing lift-augmentation wind tunnel test method and device for the transport plane, the precision of blowing parameter control and aerodynamic force measurement is improved; and reliable wind tunnel test data is provided for the evaluation of the air blowing lift augmentation aerodynamic performance of transportation aircrafts.

Description

technical field [0001] The invention relates to a method for testing a half-model of a transport aircraft in a wind tunnel for blowing air to increase lift, and belongs to the technical field of wind tunnel testing. Background technique [0002] The wings of modern transport aircraft are often equipped with movable parts such as front and rear edge flaps and slats. By controlling the deflection of these moving parts, the shape of the wing surface can be changed within a certain range, affecting the airflow direction on the upper and lower surfaces of the wing, thereby increasing the lift of the wing and improving the take-off and landing performance of the aircraft. The slots between active control surfaces such as slats and flaps make the flow field very complex, including boundary transition, flow separation, mutual interference of wake flow, etc. These complex flow phenomena affect the flow quality on the airfoil , Bringing a series of problems such as excessive noise an...

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Problems solved by technology

[0006] When the high-pressure air flow acts on the surface flow field of the wing in the flap blowing air-lifting technology, the flow field around the wing becomes very complicated. At present, it is difficult to use calculation methods to give accurate results. It is mainly determined

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