Acoustic treatment device for an aircraft propulsion assembly, and its method of manufacture
AssigneeSafran
InventorsNicolas Pierre Lanfant, Hugues Laurent Alglave, Patrick Dunleavy
Life of this patent
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Abstract
An acoustic treatment device for an aircraft propulsion assembly includes two skins that enclose an acoustic structure. The acoustic structure has a cellular structure with hollow cells and a structure of shapes with protruding shapes, each of which is engaged in a different hollow cell of the cellular structure. The structure of shapes additionally has stubs designed to fit into the hollow cells of the cellular structure and to allow the acoustic treatment device to be fixed to a component of the aircraft propulsion assembly.
Claims11
An acoustic treatment device for an aircraft propulsion assembly, the device comprising a first skin and a second skin enclosing an acoustic structure, said acoustic structure having a cellular structure that includes a plurality of hollow cells arranged in a periodic arrangement, and a structure of shapes, comprising a plurality of protruding shapes arranged in the same periodic arrangement, and so that each of said protruding shapes engages in a different hollow cell of the cellular structure,
- wherein said structure of shapes further comprises at least one stub, of a shape distinct from that of the protruding shapes, the at least one stub being also part of the periodic arrangement and being configured to fit into at least one hollow cell of the cellular structure and to enable the acoustic treatment device to be fixed to a component of the aircraft propulsion assembly.
Dependencies are inferred from the claim text.