| 摘要 |
The subject of the invention is a device for improving the effectiveness of the acoustic treatment or treatments in an aircraft propulsion assembly 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), characterized in that it comprises 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) and in that 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 off at least one of said internal and/or external walls (40, 42) of said duct and/or off at least one of the walls (44, 46) of said at least one partition (38, 38'). |
