Sensor installation device for acoustic wind tunnel test

A technology of wind tunnel test and installation device, applied in aerodynamic test, measurement device, instrument and other directions, to achieve the effect of light weight, good function expansibility and simple installation

Pending Publication Date: 2019-10-11
NAVAL UNIV OF ENG PLA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the problems of the existing two sensor installation devices, the present invention designs a new sensor installation device for acoustic wind tunnel tests, called a steel wire mesh array device, which is mainly used for the installation of side sensors of test pieces in acoustic wind tunnels positioning, such as figure 1 shown

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  • Sensor installation device for acoustic wind tunnel test
  • Sensor installation device for acoustic wind tunnel test
  • Sensor installation device for acoustic wind tunnel test

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Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1 (one-dimensional wire mesh alignment device)

[0023] exist figure 1 In the first embodiment shown, it reflects the form of the wire mesh array device used when the sensors are arranged in a one-dimensional line array. The wire mesh array device is composed of a connecting rod (1) and a steel wire rope (2), wherein the connecting rod needs to have a certain length, which is slightly higher than the sound-absorbing wedge (4). After the wire mesh array device is installed, required sensors, such as sound pressure sensors, can be installed at the measuring point (3). In Embodiment 1, there are a total of 5 measuring points where sensors can be installed to form a one-dimensional line array arrangement, which can measure various signal data at positions parallel to the axis of the wind tunnel, such as sound pressure signals. The specific connection method is as Figure 4 ~ Figure 6 shown.

[0024] figure 2 As shown in the connecting rod installation diagr...

Embodiment 2

[0028] Embodiment 2 (two-dimensional wire mesh alignment device)

[0029] exist Figure 5 In the second embodiment shown, it reflects the form of the wire mesh array device used when the sensors are arranged in a two-dimensional plane array. The wire mesh array device is composed of a connecting rod (1) and a steel wire rope (2), wherein the connecting rod needs to have a certain length, which is slightly higher than the sound-absorbing wedge (4). After the wire mesh array device is installed, the required sensors can be installed at the measuring point (3). In the second embodiment, there are a total of 5×5=25 measuring point locations available for installing sensors, forming a two-dimensional planar array layout, which can measure various signal data at the planar positions parallel to the axis of the wind tunnel.

Embodiment 3

[0030] Embodiment three (three-dimensional wire mesh arrangement device)

[0031] exist Figure 6In the third embodiment shown, it reflects the form of the wire mesh array device used when the sensors are arranged in a three-dimensional space array. The wire mesh array device is composed of a connecting rod (1) and a steel wire rope (2), wherein the connecting rod needs to have a certain length, which is slightly higher than the sound-absorbing wedge (4). After the wire mesh array device is installed, the required sensors can be installed at the measuring point (3). In the third embodiment, there are a total of 5×5×3=75 measuring point positions available for installing sensors, forming a three-dimensional space array layout, which can measure various signal data in the space field on the side of the wind tunnel axis.

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Abstract

A sensor installation device for an acoustic wind tunnel test is provided. A wire mesh array is used in the sensor installation device, and the sensor installation device is composed of a wire rope, aconnecting rod, a fixing bolt and a wire rope tightener. One end of the connecting rod is connected with the fixing bolt, and the other end is connected with the wire rope or the wire rope tightener;the fixing bolt can be pre-installed in the wall surface of the wind tunnel test section, and can also be temporarily installed as needed; and after installation, the wire rope and the connecting rodare tightened by using the wire rope tightener to achieve the required tension, and then the intersection of the wire rope is fixed by using the thin steel wire, the ribbon, or the like. The sensor installation device can be used for the installation of sensors in the measurement of characteristics of the sound field and flow field, especially the lateral sound field or flow field in the wind tunnel, and has the advantages of light weight, simple installation, a small influence on the flow field and sound field, a low cost and strong function expansibility.

Description

[0001] 1. Technical field [0002] The invention relates to a measuring instrument for a wind tunnel, in particular to a sensor installation device for an acoustic wind tunnel test. [0003] 2. Background technology [0004] A wind tunnel is a pipeline-shaped experimental device that can artificially generate and control airflow to simulate the flow of air around an aircraft or object, measure the effect of airflow on an object and observe physical phenomena. It is used for aerodynamic experiments The most commonly used and most effective tool. Wind tunnel experiments are an indispensable part of aircraft development. It not only plays an important role in the research and development of aviation and aerospace engineering, but with the development of industrial aerodynamics, it is even more indispensable in the fields of navigation, transportation, housing construction, and wind energy utilization. Acoustic wind tunnel (also known as anechoic wind tunnel) is a special wind tu...

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 方斌茹履京周其斗李瀚钦
Owner NAVAL UNIV OF ENG PLA
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