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Sound generating device and system for wind tunnel test

A sounding device and wind tunnel test technology, applied in frequency/direction characteristic devices, sensor parts, sensors, etc., can solve the problem of difficult application of sounding devices, reduce impact, ensure stability and accuracy, and improve use efficiency Effect

Active Publication Date: 2022-03-22
LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a sounding device and system for wind tunnel tests, which solves the problem that existing sounding devices are difficult to apply in wind tunnel tests

Method used

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  • Sound generating device and system for wind tunnel test
  • Sound generating device and system for wind tunnel test
  • Sound generating device and system for wind tunnel test

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Experimental program
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Effect test

Embodiment 1

[0047] Such as figure 1 As shown, Embodiment 1 of the present invention provides a sounding device 100, including: a frequency division part 110, a treble sounding structure 120 and a bass sounding structure 130:

[0048] The frequency divider 110 is connected to the treble sounding structure 120 and the bass sounding structure, the treble sounding structure 120 and the bass sounding structure 130 are connected to each other, the treble sounding structure 120 is a circular tweeter, and the bass sounding structure 120 is connected to each other. The sound radiation end of the sound emitting structure 130 is set away from the ring-shaped tweeter.

[0049] The frequency division part 110 can distinguish the sound signals of different frequency bands, amplify them respectively, and then send them to the sounding structure of the corresponding frequency bands for playback, which is suitable for high-quality sound playback and effectively improves the sound quality of the sounding d...

Embodiment 2

[0074] Such as Figure 7 , Figure 8 As shown, Embodiment 2 of the present invention provides a wind tunnel sound generation system, including: a connection device 200, a control device 300 and the sound generation device 100:

[0075] The connection device 200 is connected with the sound generating device 100 , and the control device 300 is used to control the sound intensity of the sound generating device 100 .

[0076] The control device 300 can be placed outside the flow field, which is convenient for users to operate; during the test, the sound generating device 100 is fixed in the flow field through the connection device 200 .

[0077] By connecting the sounding device with the connecting device to form a wind tunnel sounding device, a test device that can be used in wind tunnel acoustic tests to simulate the sound of the engine nacelle is obtained, which avoids the problems of high cost, difficult test and difficult realization of real flight tests. The method has the...

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Abstract

The present invention is applicable to the technical field of wind tunnel test, and provides a sounding device and system for wind tunnel test. The sounding device includes: a frequency division part, a treble sounding structure and a bass sounding structure: The sounding structure and the bass sounding structure, the treble sounding structure and the bass sounding structure are connected to each other, the treble sounding structure is an annular tweeter, and the sound radiation end of the bass sounding structure is set against the annular tweeter . The sound generating device and system for wind tunnel tests provided by the invention improve the use efficiency of sound sources, are applicable to wide-band sound generation, and are more suitable for sound generation under a wind tunnel flow field.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel tests, and in particular relates to a sounding device and system for wind tunnel tests. Background technique [0002] With the rapid increase of air traffic flow, the noise pollution of aircraft is becoming more and more serious, which not only seriously affects the daily life and health of residents near the airport, but also reduces the comfort and satisfaction of passengers in the cabin. The increasing noise pollution of aircraft has further aroused people's attention and attention, and it is urgent to reduce the noise of the whole aircraft and the noise inside the cabin. Therefore, the technical research on aircraft noise reduction is becoming more and more urgent. [0003] For large commercial aircraft in the prior art, the engine nacelle is an important factor that causes aircraft noise, but in the prior art, there is very little research on the impact of the engine nacelle on the surfac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04R1/26H04R1/28H04R1/40
CPCH04R1/26H04R1/2811H04R1/403
Inventor 李文建黄奔吴松岭杨玫
Owner LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT
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