Aircraft cabin panel for sound reduction

Details Aircraft cabin panel for sound reduction Aircraft cabin panel for sound reduction

B - Operations, Transporting

64

C

B64C 1/06 (2006.01) B64C 1/40 (2006.01) G10K 11/16 (2006.01)

Patent

CA 2746333

The present invention relates to an aircraft cabin panel for sound reduction in an interior space. The invention in particular also relates to an aircraft comprising an interior lining with sound-absorbing and sound-reducing panels. In order to provide a panel that is optimized in terms of the design space required by it and in terms of its weight, for use in aircraft, which panel provides improved sound reduction and sound absorption characteristics, an aircraft cabin panel (40) for sound reduction in an interior space is provided, which aircraft cabin panel in at least one region comprises a sandwich construction with a core layer (50), a first covering layer (52) and a second covering layer (54). The core layer comprises sound absorbing open-pore core material. The first and the second covering layer (54) are connected to the core layer in a planar fashion. The first covering layer is arranged towards the sound waves to be absorbed and the second covering layer is arranged opposite the first covering layer (52). The first covering layer (52) is designed so as to be acoustically transparent.

L'invention concerne un panneau (40) de cabine d'aéronef pour l'atténuation acoustique dans un espace intérieur, ledit panneau présentant, dans au moins une zone, une construction sandwich comprenant une couche centrale (50), une première couche de recouvrement (52) et une seconde couche de recouvrement (54). La couche centrale est constituée par un matériau central à alvéoles ouverts, à absorption acoustique. La première et la seconde couche de recouvrement sont liées, de manière plane, avec la couche centrale. La première couche de recouvrement est disposée en direction des ondes sonores à absorber, et la seconde couche de revêtement est disposée à l'opposé de la première couche de revêtement. La première couche de revêtement est réalisée transparente au point de vue acoustique.

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