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Device for wind tunnel dynamic derivative pitch vibration test

A technology of pitch vibration and dynamic derivative, which is used in aerodynamic tests, measuring devices, and testing of machine/structural components, etc. It can solve the problems of high wind tunnel blocking rate, low rigidity, uncontrollable vibration frequency and amplitude, etc.

Inactive Publication Date: 2013-03-27
MIANYANG WEIBO ELECTRONICS
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The invention can solve the defects of uncontrollable test vibration frequency and amplitude, high wind tunnel blocking rate and low rigidity

Method used

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  • Device for wind tunnel dynamic derivative pitch vibration test
  • Device for wind tunnel dynamic derivative pitch vibration test
  • Device for wind tunnel dynamic derivative pitch vibration test

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] figure 1 It is a schematic front view of the structure of the device for the wind tunnel dynamic derivative pitching vibration test of the present invention, figure 2 It is the structural schematic A-A sectional view of the device for the wind tunnel dynamic derivative pitching vibration test of the present invention, image 3 It is the structural schematic B-B sectional view of the device for the wind tunnel dynamic derivative pitching vibration test of the present invention, Figure 4 It is an oblique view of the device used in the wind tunnel dynamic reciprocal pitching vibration test of the present invention. From Figure 1~4 It can be seen that the device for the wind tunnel dynamic derivative pitching vibration test of the present invention includes a support mechanism 37 , a parallel double crank mechanism 38 and a limit detection modu...

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Abstract

The invention provides a device for wind tunnel dynamic derivative pitch vibration test. The device comprises a support mechanism, a parallel-double-crank mechanism and a limit detection module, the support mechanism is a base body for mounting of the device, the parallel-double-crank mechanism realizes and transfers pitch sinusoidal vibration motion, and the limit detection module provides alarm for excess of mechanism rotational stroke. After vibration frequency and amplitude are set and a specific vibration curve is outputted by a servo motor, an aircraft model is driven to perform pitch vibration through the parallel-double-crank mechanism mounted on the support mechanism, and in the process, the limit detection module provides limit and protection for the mechanisms.

Description

technical field [0001] The invention belongs to the technical field of test devices, and in particular relates to a device for a wind tunnel dynamic derivative pitch vibration test. Background technique [0002] The dynamic derivative (dynamic stability derivative) is the derivative of the aerodynamic force and moment to the time change rate of the model attitude parameters when the test model (hereinafter referred to as the model) rotates or translates. The dynamic derivative pitching vibration test is used to measure the dynamic derivative of the model during pitching vibration. The study of dynamic derivatives has great social significance and economic benefits. The traditional method of measuring the dynamic derivative is the free vibration method, that is, the model is supported by elastic elements in the wind tunnel to form an elastic system. During the test, the model is given an initial disturbance, and the model is free to attenuate vibration under the action of el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/00
Inventor 王新科龚运环景富军段雪峰范华献尹健刘玲谭胜龙何佳林张锐鞠波黄蕾
Owner MIANYANG WEIBO ELECTRONICS
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