Horizontal opening wind tunnel-based steel rod support oscillation test mechanism

Oscillation test, steel rod technology, applied in aerodynamic test, machine/structural component test, instrument, etc., can solve problems such as dynamic test support interference, improve test data accuracy, solve cave wall interference, and system The effect of high accuracy of sports indicators

Inactive Publication Date: 2021-08-17
中国航空工业集团公司哈尔滨空气动力研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on the above deficiencies, the purpose of the present invention is to propose a steel rod support oscillation test mechanism based on a horizontal opening wind tunnel, which can fundamentally solve the problem of serious interference of the dynamic test support, and ensure accurate model installation and positioning. It can effectively solve the problem of cave wall interference and improve the accuracy of test data

Method used

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  • Horizontal opening wind tunnel-based steel rod support oscillation test mechanism
  • Horizontal opening wind tunnel-based steel rod support oscillation test mechanism
  • Horizontal opening wind tunnel-based steel rod support oscillation test mechanism

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Such as Figure 1-3 As shown, a steel bar-supported oscillation test mechanism based on a horizontal opening wind tunnel includes a model support device, a main frame and two sets of driving devices. The main frame is fixedly installed on the upper and lower turntables of the horizontal opening wind tunnel test section. The turntable performs side-sliding movement, and the two sets of driving devices are symmetrically fixed and installed on the two side pillars of the main frame. The model support device is connected to the power output end of the two sets of driving devices. The detection unit ensures that the driving devices on both sides move synchronously; the model supporting device includes two sets of cross-shaped main rods, 8 main steel rods and hanging components, and the center of each cross-shaped main rod is connected with the power of the driving device. The output end is connected, each cross end of each set of cross-shaped main rods is connected to one en...

Embodiment 2

[0018] Such as figure 1 As shown, the model supporting device includes a hanging assembly 1, 8 thin steel rods 2, a plurality of tight nuts 3, a plurality of adapter shafts 4, a plurality of ball joints 5, a plurality of ball joints 6, and a plurality of extension rods 7 , 2 sets of cross-shaped main poles 8, 2 sets of rotating shaft joints 9, multiple supporting steel rods 19, multiple snap rings 22, multiple supporting steel rod lock nuts 20 and multiple supporting steel rod adapter shafts 21. One end of the main steel rod 2 is connected to the ball socket of the suspension assembly 1 through the ball head at the front end of the steel rod, the other end is connected to the main steel rod lock nut 3, and the end of the main steel rod lock nut 3 is connected to the main steel rod transfer shaft 4 Connection, in order to adapt to the angle difference during the installation process of the mechanism, the main steel rod transfer shaft 4 is connected with the ball joint 5 with an...

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Abstract

The invention discloses a horizontal opening wind tunnel-based steel rod support oscillation test mechanism, which comprises a model support device, a main body frame and two sets of driving devices; the main body frame is fixedly mounted on an upper turntable and a lower turntable of a horizontal opening wind tunnel test section and performs sideslip movement along with the turntables; the two sets of driving devices are symmetrically and fixedly installed on supporting columns on the two sides of the main body frame, the model supporting device is connected with the power output ends of the two sets of driving devices, each set of driving device is provided with a detection unit, and the two sets of detection units guarantee that the driving devices on the two sides move synchronously; and the model is driven by the two sets of driving devices to do sine oscillation motion with a given rule. According to the invention, the problem of serious interference of a dynamic test support is fundamentally solved; meanwhile, the steel rod support oscillation test mechanism has the characteristics of small expansion and contraction amount, accurate model installation and positioning and high motion index precision; in addition, the problem of interference of the closed wind tunnel wall can be effectively solved, the working difficulty and workload of data correction are reduced, and the accuracy of test data is improved.

Description

technical field [0001] The invention relates to a steel rod support vibration test mechanism based on a horizontal opening wind tunnel. Background technique [0002] Large-scale oscillation test technology and angular oscillation test technology are the most mature dynamic test technologies in the field of wind tunnel dynamic experiments in my country, and are widely used in model experiments. At present, except for the rolling oscillation test of some models, the rest of the large-scale oscillation test and angular oscillation test all use the strut support model, coupled with the complex support and oscillation movement mechanism, the interference problem of the support in the test is very serious. Developed countries have always attached great importance to the research on the factors affecting the uncertainty of this type of dynamic test data. They began to study the support interference and wall interference of the large-scale oscillation test and angular oscillation te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/04G01M9/06
CPCG01M9/04G01M9/06
Inventor 牟伟强卜忱沈彦杰
Owner 中国航空工业集团公司哈尔滨空气动力研究所
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