Large low-speed wind tunnel buffeting test wing model supporting device

Abstract

The invention discloses a large low-speed wind tunnel buffeting test wing model supporting device, which comprises a base, a rotary supporting mechanism, a model adapter, a wing model, a rectificationfuselage and an automatic aligning mechanism. The base is fixedly connected with H-shaped steel on the side wall of a test section, and the base is fixedly connected with the rotary supporting mechanism; the model adapter extends into a wind tunnel through a wind tunnel side wall observation window, the outer end of the model adapter is fixedly connected with the rotary bearing mechanism, the upper end and the lower end of the model adapter are fixedly connected with the rectification fuselage and the wing model respectively, and the rectification fuselage and the wing model are not in contact with each other. And the automatic aligning mechanism is fixedly connected with the base, drives the rotary supporting mechanism to rotate and adjust, and rotates along with the rotary supporting mechanism, so that the model adapter drives the rectification fuselage and the wing model to rotate together. Parts of the device are installed outside the wind tunnel, the blocking degree is reduced, and no interference is caused to a wind tunnel flow field.

Description

technical field [0001] The invention relates to a large-scale low-speed wind tunnel buffeting test wing model support device. Background technique [0002] If the airflow is separated when the aircraft is flying at low speed and high angle of attack, buffeting will be induced. Buffeting is the forced vibration of the aircraft structure caused by the random pulsating pressure excitation in the separated airflow. Although the buffeting of the aircraft does not immediately lead to structural damage like flutter, the buffeting increases the structural stress and reduces the fatigue life of the structure; reduces the performance of the aircraft (increased drag, decreased lift); Phenomena such as wing drop, head tilt, and swaying will lead to deterioration of the flight quality of the aircraft. In addition to reducing the work efficiency of the flight attendants and making passengers feel uncomfortable, it will also cause the deterioration of the working environment of the airborn...

AI Technical Summary

Problems solved by technology

In addition, most of the existing buffeting test wing model support devices install part of the structure in the wind tunnel, which increases the degree of obstruction and affects the flow field of the wind tunnel; the traditional manual adjustment of the angle of attack of the model results in low test efficiency and poor accuracy

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