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Device for testing cabin parts of commercial aircrafts

A laboratory and aircraft technology, applied in the field of devices for laboratory testing in compartments, can solve the problem of high cost of large aircraft

Inactive Publication Date: 2009-07-01
AIRBUS OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this solution always presupposes the availability of real fuselage sections, which is especially cost-prohibitive for large aircraft

Method used

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  • Device for testing cabin parts of commercial aircrafts

Examples

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Embodiment Construction

[0015] A device according to the invention is schematically shown in the drawing.

[0016] Here, a pod 1 outside the fuselage of the aircraft is mounted on the floor 3 of a test station via conventional vibration absorbers 2 .

[0017] Below the vibration absorber 2 are arranged piezoelectric vibration exciters 4 for generating exciting structure-borne noise. In this case, a loudspeaker device 5 is assigned to the compartment 1 for the excitation of airborne sounds.

[0018] The elements 4 , 5 for structure-borne and airborne-acoustic excitation are regulated by a control and regulating device 6 and fed by a computing unit 7 .

[0019] The computing unit 7 is fed here via an input unit 8 which has knowledge-based data, here at least containing the components of the different sound propagation resulting from the analysis of the existing installed acoustically designed compartment 1 . In addition, measured values ​​of the current situation in the aircraft in relation to the i...

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Abstract

For laboratory testing of closed compartments to be installed as lounges in aircraft, the invention proposes the use of a simulation device. The invention proposes that the compartments be arranged in accordance with their subsequent connection to the fuselage structure via vibration exciters for simulated excitation of structure-borne sound. In addition, the compartment is equipped with elements for airborne sound excitation. The vibration exciters and the elements for airborne sound excitation can be adjusted via control and regulating devices. The signal can be generated by a calculation unit with an input data file of knowledge-based data and, if necessary, by extrapolation of the acoustic values ​​at the installation location and the configuration of the compartment.

Description

technical field [0001] The invention relates to a device for laboratory testing of closed compartments to be installed in aircraft as lounges for acoustic design and testing. Background technique [0002] The acoustic design of closed compartments in the passenger cabin or cargo compartment often has to meet particularly high noise protection requirements for rest / sleep purposes of the crew or passengers. In this case, the installation location of the pod is usually determined in an environment with a particularly high ambient noise level. Therefore, in the acoustic design of the pod, it is important to consider the ambient noise around the pod and the noise propagation path. [0003] It is already known that the compartment is installed in a real fuselage section, outside which a diverging sound field is generated by means of a reverberation chamber mounted on the fuselage contour as an acoustic simulation of the radiated noise of the drive mechanism and the noise of the b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/12G01M7/02G01N29/34
CPCG01N2291/2694G01N29/12G01N29/34
Inventor 沃尔夫冈·格莱内
Owner AIRBUS OPERATIONS GMBH
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