公开(公告)号：US20210049993A1

公开(公告)日：2021-02-18

申请号：US16987949

申请日：2020-08-07

Applicant: Airbus Operations (S.A.S.)

Inventor： Laurent Cazeaux ,  Florent Mercat ,  Claire Maffre

IPC: G10K11/162 ,  B64D33/00

Abstract: A double-enclosure acoustic element of small size, in particular for an aircraft acoustic panel. The acoustic element has a first enclosure with a mouth and a second enclosure with, at a front longitudinal end, a mouth and arranged inside the first enclosure, these first and second enclosures being joined together at the front. The acoustic element includes a slotting assembly system, the assembly system including at least one protruding element on the first edge of one of the first and second enclosures and at least one recess in the first edge of the other of the first and second enclosures, the protruding element and the recess having complementary shapes such that the protruding element can be slotted into the recess. Thus, the two enclosures can be assembled by quick and easy slotting.

公开(公告)号：US11511875B2

公开(公告)日：2022-11-29

申请号：US16682252

申请日：2019-11-13

Applicant: Airbus Operations S.A.S.

Inventor： Wolfgang Brochard ,  Laurent Cazeaux ,  Claire Maffre

IPC: B64D33/02 ,  G10K11/168 ,  G10K11/172 ,  B32B3/30

Abstract: An acoustic absorption structure includes: at least one acoustic element which has at least one cavity delimited by at least one enclosure comprising at least one first drainage orifice passing through the enclosure, and a rotational indexing system making it possible to position the acoustic element so that at least one first drainage orifice is positioned in proximity to or at a lowest point of the cavity. An aircraft propulsion assembly including such an acoustic absorption structure is also described.

公开(公告)号：US11746705B2

公开(公告)日：2023-09-05

申请号：US16682271

申请日：2019-11-13

Applicant: Airbus Operations S.A.S.

Inventor： Wolfgang Brochard ,  Laurent Cazeaux ,  Claire Maffre

IPC: F02C7/24 ,  B64D29/00 ,  G10K11/168

CPC classification number: F02C7/24 ,  B64D29/00 ,  G10K11/168 ,  F05D2260/96

Abstract: A method for manufacturing an acoustic element of a sound absorption structure including at least one cylindrical, conical or truncated conical chamber obtained from a flat preform shaped and then assembled in order to obtain the cylindrical, conical or truncated conical shape of the chamber. This manufacturing method makes it possible to obtain an acoustic element that has thin walls and is made from a material suited to its environment. An acoustic element obtained using the manufacturing method, a sound absorption structure comprising at least one such acoustic element and an aircraft powerplant comprising at least one such structure are also described.

公开(公告)号：US20200165975A1

公开(公告)日：2020-05-28

申请号：US16682271

申请日：2019-11-13

Applicant: Airbus Operations S.A.S.

Inventor： Wolfgang Brochard ,  Laurent Cazeaux ,  Claire Maffre

IPC: F02C7/24 ,  B64D29/00 ,  G10K11/168

Abstract: A method for manufacturing an acoustic element of a sound absorption structure including at least one cylindrical, conical or truncated conical chamber obtained from a flat preform shaped and then assembled in order to obtain the cylindrical, conical or truncated conical shape of the chamber. This manufacturing method makes it possible to obtain an acoustic element that has thin walls and is made from a material suited to its environment. An acoustic element obtained using the manufacturing method, a sound absorption structure comprising at least one such acoustic element and an aircraft powerplant comprising at least one such structure are also described.

公开(公告)号：US20200164997A1

公开(公告)日：2020-05-28

申请号：US16682252

申请日：2019-11-13

Applicant: Airbus Operations S.A.S.

Inventor： Wolfgang Brochard ,  Laurent Cazeaux ,  Claire Maffre

IPC: B64D33/02 ,  G10K11/172 ,  G10K11/168

Abstract: An acoustic absorption structure includes: at least one acoustic element which has at least one cavity delimited by at least one enclosure comprising at least one first drainage orifice passing through the enclosure, and a rotational indexing system making it possible to position the acoustic element so that at least one first drainage orifice is positioned in proximity to or at a lowest point of the cavity. An aircraft propulsion assembly including such an acoustic absorption structure is also described.