Acoustic absorption system for an aircraft airframe

Details Acoustic absorption system for an aircraft airframe Acoustic absorption system for an aircraft airframe

B - Operations, Transporting

64

D

B64D 11/00 (2006.01)

Patent

CA 2592334

An acoustic absorption system fills each frame void within an airframe section with a close fitting foam portion. A mass barrier layer is adhered over the foam portions and to a multitude of frame members. The mass barrier layer is a contiguous layer adhered across the multitude of frame members to seal the airframe frame voids to make use of mass-air-mass principles to reduce flanking path leakage around the foam portions.

L~invention concerne un système d~absorption acoustique remplissant d~un morceau de mousse bien ajusté tous les vides dans un tronçon de cellule d~un aéronef. Une couche barrière de masse est collée par-dessus les morceaux de mousse et sur une pluralité d~éléments de cellule. La couche barrière de masse est une couche contiguë collée en travers de la pluralité d~éléments de cellule pour boucher les vides dans la cellule et réduire ainsi les fuites dans les chemins de transmission indirecte du son autour des morceaux de mousse.

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