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公开(公告)号：US11512666B2
公开(公告)日：2022-11-29
申请号：US16921163
申请日：2020-07-06
Applicant: Safran Nacelles , Safran Ceramics
Inventor： Florent Bouillon , Franck Dupe , Benoît Carrere , Bertrand Desjoyeaux
Abstract: A structure for the nacelle of an aircraft propulsion unit includes a first skin and stiffeners arranged to hold acoustic treatment modules against the first skin. Each acoustic treatment module includes a honeycomb core and a second skin, such that the honeycomb core is sandwiched between the first skin and the second skin. Such a structure allows the structural reinforcement function provided by the stiffeners to be separated from the acoustic treatment function performed by the acoustic treatment modules which are simply bearing on the first skin.
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公开(公告)号：US10913181B2
公开(公告)日：2021-02-09
申请号：US16793523
申请日：2020-02-18
Applicant: SAFRAN NACELLES
Inventor： Benjamin Provost , Bertrand Desjoyeaux , Sébastien Louchard , Fabien Depeux
IPC: B32B1/08 , B29B11/16 , B64D29/00 , B32B5/12 , B29C70/30 , B64F5/10 , B64C7/02 , B29K105/08 , B29L31/30 , F02C7/04
Abstract: A method for manufacturing a preform has a non-developable end shape having, about a longitudinal axis (A), an end overall radius of curvature (R2), and, in at least a longitudinal section, curved segments forming bending radii linking straight segments. The method includes a step of depositing successive layers giving the preform an initial substantially rotational shape having, about the longitudinal axis (A), an initial overall radius of curvature, then a step of deploying the preform by increasing the initial overall radius of curvature until the end overall radius of curvature is reached (R2), in order to close the bending radii of the curved segments.
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公开(公告)号：US10767288B2
公开(公告)日：2020-09-08
申请号：US15454022
申请日：2017-03-09
Applicant: SAFRAN NACELLES
Inventor： Benjamin Provost , Julien Lorrillard , Bertrand Desjoyeaux , Michel Rognant
IPC: D03D25/00 , B29C70/24 , D03J1/00 , F01D9/00 , F01D9/04 , B29B11/16 , F01D25/26 , F01D25/24 , F01D5/28 , B29K307/04
Abstract: The present disclosure concerns a preform for a curved composite stiffener for an axisymmetric part such as a shroud, including at least one web and at least one flange curved about an axis of revolution of the preform and defining a substantially “T” or an “I” shaped section. In one form, the preform includes a web and a flange, wherein the web includes a plurality of warp yarns circumferentially oriented relative to the axis of revolution of the preform, and a plurality of weft yarns oriented radially relative to said axis, and the flange includes a plurality of warp yarns circumferentially oriented relative to the axis of revolution of the preform, and a plurality of weft yarns substantially parallel to said axis.
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公开(公告)号：US12090741B2
公开(公告)日：2024-09-17
申请号：US16800286
申请日：2020-02-25
Applicant: Safran Nacelles , Safran Ceramics
CPC classification number: B32B5/024 , B32B3/12 , F02K1/827 , B32B2250/03 , B32B2262/105 , B32B2307/102 , B32B2605/18
Abstract: A panel for a nacelle of an aircraft propulsion assembly includes two skins and a cell structure provided with transverse partitions defining cells. The cell structure includes folds with at least one central part forming at least one part of at least one transverse partition and at least one peripheral part extending along at least one of the skins. A nacelle with such a panel is provided, as well as a method for manufacturing such a panel.
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15.发明授权公开(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.
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Patent Agency Ranking
16.发明授权公开(公告)号：US11473225B2
公开(公告)日：2022-10-18
申请号：US16212738
申请日：2018-12-07
Applicant: Safran Nacelles
Inventor： Julien Lorrillard , Bertrand Desjoyeaux , Michel Rognant , Benjamin Provost
IPC: D03D25/00 , D03D1/00 , D03D11/02 , D03D13/00 , D03D49/20 , B29B11/16 , D03D41/00 , D03J1/08 , D03D49/02 , B29C70/22 , B29B15/12 , B29C44/12 , B29C70/08
Abstract: A method of manufacturing a preform including a core and a sole includes contour weaving the preform on a lap roller having a groove or an outgrowth allowing shape weaving of the core and the sole of the preform. At least one portion of the core and at least one portion of the sole include weft yarns which cross each other on common warp yarns.
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公开(公告)号：US11235492B2
公开(公告)日：2022-02-01
申请号：US16693551
申请日：2019-11-25
Applicant: Safran Nacelles
Inventor： Bertrand Desjoyeaux , Benjamin Provost , Fabien Depeux , Davi Silva De Vasconcellos
IPC: D03D1/00 , D03D3/02 , D03D3/08 , D03D13/00 , B32B1/08 , B32B5/02 , F02K1/48 , B29B11/16 , B29C70/22 , B29L31/00
Abstract: A tubular structure having lobes is produced as a single piece over at least two lobes. Circumferential fibres of the structure have a constant orientation with respect to the longitudinal axis (A) of the structure in any plane (P) transverse to the longitudinal axis. The structure is obtained by weaving or by filament winding.
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18.发明授权公开(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.
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19.发明授权公开(公告)号：US10746046B2
公开(公告)日：2020-08-18
申请号：US15672638
申请日：2017-08-09
Applicant: Safran Nacelles
Inventor： Benjamin Provost , Bertrand Desjoyeaux , Sébastien Louchard , Arnaud Marical
Abstract: The present disclosure provides a method for manufacturing a preform made of reinforcement fibers woven in a longitudinal direction. The preform is impregnated with resin in order to form an elongated element having a variable transverse cross-section. In one form, the method includes the step of simultaneously including a reduction (or increase) in width and an increase (or reduction) in height. The variable cross-section includes, along the length thereof, a consistent number (c) of continuous warp threads arranged in layers. The method for reducing width includes carrying out a change in weave, adding additional weft threads, and simultaneously drawing the teeth of the longitudinal beater reed closer together so as to increase the number of layers.
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公开(公告)号：US10654194B2
公开(公告)日：2020-05-19
申请号：US16240092
申请日：2019-01-04
Applicant: SAFRAN NACELLES
Inventor： Benjamin Provost , Bertrand Desjoyeaux , Sébastien Louchard , Fabien Depeux
IPC: B29B11/16 , B29C70/30 , B64F5/10 , B32B1/08 , B32B5/12 , B64D29/00 , B64C7/02 , B29K105/08 , B29L31/30 , F02C7/04
Abstract: A method for manufacturing a preform has a non-developable end shape having, about a longitudinal axis (A), an end overall radius of curvature (R2), and, in at least a longitudinal section, curved segments forming bending radii linking straight segments. The method includes a step of depositing successive layers giving the preform an initial substantially rotational shape having, about the longitudinal axis (A), an initial overall radius of curvature, then a step of deploying the preform by increasing the initial overall radius of curvature until the end overall radius of curvature is reached (R2), in order to close the bending radii of the curved segments.
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