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Sound-absorbing element for transport means, in particular for aircraft

A technology for transportation devices and aircraft, applied in transportation and packaging, vehicle parts, fuselage insulation, etc., can solve problems such as heavy weight, and achieve the effect of small weight, good mechanical rigidity, and simple manufacturing

Inactive Publication Date: 2008-08-13
AIRBUS OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the weight per unit area of ​​such structures is too heavy for application in aeronautical engineering

Method used

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  • Sound-absorbing element for transport means, in particular for aircraft
  • Sound-absorbing element for transport means, in particular for aircraft
  • Sound-absorbing element for transport means, in particular for aircraft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Figure 1 shows a rear view of a sound absorbing element according to the invention.

[0024] In the exemplary embodiment shown, the sound-absorbing element 1 includes six sound-absorbing panels 2 to 7. Six substantially rectangular frames 9 to 14 are glued to the substrate 8. The frames 9 to 14 are used in particular for accommodating the sound-absorbing panels 2 to 7.

[0025] The rectangular frames 9 to 14 include four horizontal frame segments 15 to 18 and a total of nine vertical frame segments. For the sake of clarity, only the first frame segment 19 has a reference number, and the first frame segment 19 is the remaining frame Representative of the segment. The frame segment preferably includes a hollow rectangular profile to drain water and foreign particles. As an alternative, the frame segment may also include other contour shapes, such as a square hollow contour and the like. In each case, the connecting straps are glued to the corner areas of the frames 9 to 14 to...

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PUM

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Abstract

The invention relates to a sound-absorbing element (1) for transport devices, in particular aircraft, comprising at least one sound-absorbing panel (2 to 7) mounted on a base plate (8) provided with a Multiple notches of sound, especially the perforated grid (43) etc. According to the invention, the acoustic panels (2 to 7) are framed by frames (9 to 14), said at least one frame (9 to 14) comprising transition profiles (30, 47, 48 ), in particular to prevent fatigue fractures due to stiffness differences between said frame (9 to 14) and said base plate (8). The base plate (8) comprises a plurality of openings, in particular a perforated grid (43), thereby making it possible to produce an air-permeable sound-absorbing element (1) when combined with sound-absorbing panels (2-7).

Description

Technical field [0001] The present invention relates to a sound-absorbing element for a transportation device, especially an aircraft, which comprises at least one sound-absorbing panel arranged on a base plate, wherein the base plate includes a plurality of notches for transmitting sound, especially a perforated grid and the like. Background technique [0002] In order to absorb sound in the aircraft, a sandwich panel is used, which includes a honeycomb core panel as a core panel structure with covering layers on both sides. The honeycomb core board is formed, for example, by using Nomex(R) paper impregnated with phenolic resin, and the covering layer is formed by a fiber-reinforced plastic material, especially a so-called prepreg material. The term "pre-impregnated" material refers to a woven reinforcing fiber fabric sandwiched with reinforcing fiber scrims or reinforcing fibers that are pre-impregnated in the factory with a suitable resin system such as epoxy resin. , And then...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C1/40B60R13/08
CPCB60R13/0815B64C1/40
Inventor 斯特凡·霍策尔特马尔特·贝克贝恩德·奥伦多夫斯特芬·爱尔福特
Owner AIRBUS OPERATIONS GMBH
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