公开(公告)号：US11591960B2

公开(公告)日：2023-02-28

申请号：US17427548

申请日：2020-01-22

Applicant: SAFRAN NACELLES

Inventor： Sébastien Laurent Marie Pascal ,  Jean-Michel Paul Ernest Nogues ,  Marc Versaevel ,  François Chauveau

IPC: F02C7/045 ,  F02C7/047 ,  B64D15/04

Abstract: The invention relates to an air intake of an aircraft turbojet engine nacelle, extending along an axis X, in which an air flow circulates from upstream to downstream, the air intake extending circumferentially around the axis X and comprising an inner wall, which faces the axis X in order to guide an inner air flow, and an outer wall, which is opposite the inner wall, for guiding an external air flow, the walls being connected by a leading edge and an inner partition so as to delimit an annular cavity. The air intake comprises means for injecting at least one hot air flow into the inner cavity and at least one ventilation orifice formed in the outer wall in order to allow the hot air flow to escape after heating the internal cavity, the air intake comprising at least one disruption member of the external air flow, positioned upstream of the ventilation orifice, which extends outwardly from the outer wall.

公开(公告)号：US12180891B2

公开(公告)日：2024-12-31

申请号：US18554958

申请日：2022-04-11

Applicant: SAFRAN NACELLES

Inventor： Marc Versaevel ,  Bertrand Léon Marie Desjoyeaux ,  Pierre-Yves Gini

IPC: F02C7/045

Abstract: An acoustic panel for a turbine engine includes a first strip and a second strip each comprising an alternation of first ridges and second ridges connected by sidewalls. The first and second strips are joined to each other to form a plurality of cells, each delimited by a first ridge of the first strip and a first ridge of the second strip. A third strip is interposed between the first strip and the second strip and includes a first lateral wall bearing on the first strip The third strip further includes at least one tab that extends inside one of the cells and delimits all or part of a passage inside the associated cell.

公开(公告)号：US12129042B2

公开(公告)日：2024-10-29

申请号：US18292765

申请日：2022-07-22

Applicant: SAFRAN NACELLES

Inventor： Denis Guillois ,  Loïc Chapelain ,  Marc Versaevel

IPC: B64D33/02 ,  F02C7/24

CPC classification number: B64D33/02 ,  B64D2033/0206 ,  F02C7/24 ,  F05D2260/96

Abstract: An acoustic assembly including a multicellular acoustic panel having at least one through cavity along a direction X, wherein the acoustic assembly further includes at least one sealing element including a body enclosing one or more acoustic cells, the body being able to be inserted into the cavity and extending along the direction X between a first face and a second face, the sealing element further including a seal on the second face of the body able to ensure the sealing with the acoustic panel.

公开(公告)号：US11686247B2

公开(公告)日：2023-06-27

申请号：US16806188

申请日：2020-03-02

Applicant: Safran Nacelles

Inventor： Bertrand Desjoyeaux ,  Marc Versaevel

IPC: F02C7/045 ,  B64D33/02 ,  F04D29/66 ,  G10K11/172 ,  F02K1/82

CPC classification number: F02C7/045 ,  B64D33/02 ,  F04D29/665 ,  G10K11/172 ,  B64D2033/0206 ,  F02K1/827

Abstract: An acoustic panel with a cellular core includes cells that are provided with one or more obstacles, each of the obstacles extending transversely in relation to the main axis of the associated cell so as to increase the length of the path (F) that sound waves travel through the cell. Methods enabling the production of such a panel implements steps of cutting, folding and bonding that are suitable for creating cells provided with such obstacles.

公开(公告)号：US11629644B2

公开(公告)日：2023-04-18

申请号：US16411199

申请日：2019-05-14

Applicant: SAFRAN ,  Safran Nacelles

Inventor： Marc Versaevel ,  Jean-Philippe Ginefri ,  Fabrice Provost ,  Jeremy Quesnel ,  Wouter Balk ,  Sébastien Louchard ,  Loïc Hervé André Le Boulicaut

IPC: F02C7/24 ,  B29D24/00 ,  G10K11/172 ,  B29C33/00 ,  B29C45/00 ,  B29C45/37 ,  B29K105/04 ,  B29L31/60

Abstract: An acoustic attenuation panel for a propulsion assembly includes an acoustic front skin having perforations, and a central structure formed from partitions arranged perpendicularly in order to make up cells, wherein the front skin and the central structure form the panel which is made as a single piece and is provided for directly covering a surface of an element of the propulsion assembly forming a rear skin which closes the cells of the central structure at the rear.

公开(公告)号：US11220346B2

公开(公告)日：2022-01-11

申请号：US16260972

申请日：2019-01-29

Applicant: Safran Nacelles ,  Safran Aircraft Engines

Inventor： Marc Versaevel ,  Denis Ramage ,  Baptiste Cordier ,  Georges Riou ,  Jacky Mardjono

IPC: B64D33/02 ,  F02K1/82 ,  F02C7/045 ,  G10K11/172 ,  F02K1/34 ,  B64D29/00 ,  F02C7/24 ,  G10K11/16 ,  G10K11/168

Abstract: An acoustic attenuation panel for a propulsion unit including a nacelle and a turbojet engine includes a cellular core disposed between an inner skin and an outer skin, called acoustic skin, the acoustic skin including a plurality of acoustic apertures, the acoustic apertures being inclined, at a non-zero inclination angle (β) relative to the direction normal to the acoustic skin, upstream with respect to the flow direction of the air or gas flow to which the panel is intended to be subjected under normal operating conditions, that is to say upstream of the propulsion unit when the panel is mounted in such a unit.

公开(公告)号：US10995038B2

公开(公告)日：2021-05-04

申请号：US15878432

申请日：2018-01-24

Applicant: Safran Nacelles

Inventor： Arnaud Delehouze ,  Sylvain Sentis ,  Bertrand Desjoyeaux ,  Marc Versaevel ,  Frédéric Fosse

IPC: C04B35/64 ,  C04B35/80 ,  F02K1/82 ,  G10K11/162 ,  F02C7/045 ,  B32B18/00 ,  C04B37/00 ,  C04B35/628 ,  C04B35/71 ,  C04B35/74 ,  C04B35/76 ,  C04B35/84

Abstract: A method for producing an acoustic attenuation panel from a composite material with a ceramic oxide matrix is provided that includes draping a plurality of plies having fibrous reinforcements including fibers of ceramic material in a mold to define a first skin, depositing blocks made of fugitive material on the first skin such that a space between two blocks is defined, and draping a second plurality of plies on a surface formed by the blocks such that a second skin is defined. Rounded corners of the blocks define radii for connecting the first and second skins with walls of a honeycomb core of the acoustic panel. The method further includes using a liquid medium to infiltrate the skins and spaces with a precursor of a ceramic phase, removing the liquid medium by evaporation or polymerization, and sintering to consolidate the ceramic oxide material and removal the fugitive material.