F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
F02C 7/20 (2006.01) F02C 7/24 (2006.01) F02K 3/04 (2006.01)
Patent
CA 2661874
The subject of the invention is an aircraft nacelle comprising a duct (36) through which a stream of gas flows, said duct (36) being delimited by two substantially concentric walls, an internal one (40) and an external one (42), coated at least partly by a coating designed to absorb a part of the acoustic energy and at least one partition (38, 38') extending over at least part of the length of the duct (36) between said internal and external walls (40, 42) where the profile of at least one wall (44, 46) of said at least one partition (38, 38') is defined in such a way as to increase the number of times that an acoustic beam is reflected onto the coating designed to absorb a part of the acoustic energy.
L'objet de l'invention est une nacelle d'aéronef comprenant un conduit (36) dans lequel s'écoule un flux gazeux, ledit conduit (36) étant délimité par deux parois interne (40) et externe (42) sensiblement concentriques recouvertes au moins en partie par un revêtement visant à absorber une partie de l'énergie sonore et au moins une cloison (38, 38') s' étendant sur au moins une partie de la longueur du conduit (36) entre lesdites parois interne et externe (40, 42) où le profil d'au moins une paroi (44, 46) de ladite au moins une cloison (38, 38') est défini de manière à augmenter le nombre de réflexions d'un rayon acoustique sur le revêtement visant à absorber une partie de l'énergie sonore.
Druon Yann
Gantie Fabrice
Airbus France
Airbus Operations Sas
Robic
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