公开(公告)号：US20190039265A1

公开(公告)日：2019-02-07

申请号：US16155417

申请日：2018-10-09

Applicant: Safran Nacelles

Inventor： Bertrand DESJOYEAUX ,  Benjamin PROVOST ,  Sébastien LOUCHARD ,  Fabien DEPEUX

IPC: B29B11/16 ,  B29B11/12 ,  B29C70/54 ,  B29C70/38 ,  B64D29/06

Abstract: The present disclosure relates to a preform that includes layers of textile reinforcements that are arranged in a mold by an automatic placement head and are connected to each other, and which can be dry or pre-impregnated, in order to form a part made of composite materials after curing of an impregnating resin. The part includes a folding produced by conformation of the preform after the placement of the layers of textile reinforcements. At the folding, there are spacings between at least some of the layers of textile reinforcements.

公开(公告)号：US20200180238A1

公开(公告)日：2020-06-11

申请号：US16785979

申请日：2020-02-10

Applicant: Safran Nacelles

Inventor： Bertrand DESJOYEAUX ,  Davi SILVA DE VASCONCELLOS ,  Benjamin PROVOST

IPC: B29C70/22 ,  B29C70/32 ,  B29C33/68 ,  C08J5/24 ,  C04B35/80 ,  C04B35/628 ,  C04B35/64

Abstract: A method for manufacturing a fibrous tubular structure including lobes, in which fibers are draped/deposited on a mandrel having a shape corresponding to that of the fibrous structure, includes draping/deposition carried out such that at least one group of fibers has a same orientation with respect to the axis (A) of said fibrous structure, then, the fibers having been draped over an angular sector less than the total periphery of the mandrel, one of the ends of the fibrous structure is separated from the mandrel in order to allow the continuation of the draping on the same mandrel.

公开(公告)号：US20180257338A1

公开(公告)日：2018-09-13

申请号：US15974714

申请日：2018-05-09

Applicant: Safran Nacelles

Inventor： Arnaud DELEHOUZE ,  Etienne GERMAIN ,  Sébastien LOUCHARD ,  Benjamin PROVOST

IPC: B32B7/08 ,  B32B27/12 ,  B32B1/00 ,  B29C70/54

CPC classification number: B32B7/08 ,  B29C64/165 ,  B29C65/564 ,  B29C70/543 ,  B29K2307/04 ,  B29L2031/003 ,  B29L2031/3076 ,  B32B1/00 ,  B32B7/02 ,  B32B7/04 ,  B32B27/06 ,  B32B27/12 ,  B32B2307/514 ,  B32B2307/54 ,  B32B2307/558 ,  B32B2605/00 ,  B32B2605/18 ,  Y10T428/24174 ,  Y10T428/249923

Abstract: The present disclosure relates to a part made from composite material that includes a base and a T-shaped reinforcement. The T-shaped reinforcement includes a first L-shaped element having a first right-angled connection portion and a second L-shaped element having a second right-angled connection portion. The part further includes a plurality of needles, each connecting the base to the T-shaped reinforcement of the part, close to the connection portions and extending in multiple directions so as to oppose, in particular, the separation of the base from the T-shaped reinforcement.

公开(公告)号：US20170175308A1

公开(公告)日：2017-06-22

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 ,  D03J1/00 ,  B29C70/24 ,  D03D15/02 ,  D03D49/06

CPC classification number: D03D25/005 ,  B29B11/16 ,  B29C70/24 ,  B29K2307/04 ,  D03J1/00 ,  D10B2505/02 ,  F01D5/282 ,  F01D9/00 ,  F01D9/04 ,  F01D25/24 ,  F01D25/243 ,  F01D25/246 ,  F01D25/265 ,  Y02T50/672

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.

公开(公告)号：US20210179256A1

公开(公告)日：2021-06-17

申请号：US17188482

申请日：2021-03-01

Applicant: Safran Nacelles

Inventor： Bertrand Leon Marie DESJOYEAUX ,  Julien LORRILLARD ,  Benjamin PROVOST

IPC: B64C7/02 ,  B29B11/16 ,  B29C70/22

Abstract: A method for manufacturing a preform for producing a part made of composite material with an unchangeable final shape includes supplying a triaxial non-woven textile comprising a layer of fibers orientated in a first direction, a layer of fibers orientated in a second direction, a layer of fibers orientated in a third direction, and seams extending parallel to each other and forming sheaths for the circumferential fibers, arranging the textile on an element of unchangeable shape by placing the seams parallel to the circumferential direction of the element, and sliding the circumferential fibers into the sheaths so that the textile is in continuous contact with the element.

公开(公告)号：US20200180188A1

公开(公告)日：2020-06-11

申请号：US16793523

申请日：2020-02-18

Applicant: SAFRAN NACELLES

Inventor： Benjamin PROVOST ,  Bertrand DESJOYEAUX ,  Sébastien LOUCHARD ,  Fabien DEPEUX

IPC: B29B11/16 ,  B64D29/00 ,  B32B5/12 ,  B32B1/08 ,  B29C70/30 ,  B64F5/10

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.

公开(公告)号：US20190168419A1

公开(公告)日：2019-06-06

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 ,  B32B1/08 ,  B32B5/12 ,  B29C70/30 ,  B64D29/00 ,  B64F5/10

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.

公开(公告)号：US20190106817A1

公开(公告)日：2019-04-11

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 ,  B29B11/16 ,  D03D1/00 ,  D03D49/20 ,  D03D13/00 ,  D03D11/02

Abstract: The disclosure relates to a method of manufacturing a preform including a core and a sole. The method 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.

公开(公告)号：US20240166332A1

公开(公告)日：2024-05-23

申请号：US18552829

申请日：2022-04-08

Applicant: SAFRAN NACELLES

Inventor： Benjamin PROVOST ,  Julien LORRILLARD ,  Bertrand Léon Marie DESJOYEAUX ,  Pierre PARANT

IPC: B64C7/02 ,  B29C70/24 ,  B29C70/30 ,  B64C1/00

CPC classification number: B64C7/02 ,  B29C70/24 ,  B29C70/30 ,  B64C2001/0072

Abstract: Curved stiffener for a turbomachine cowl composed of a resin-impregnated fibrous reinforcement, including a stack of a plurality of layers of fibers stacked along the thickness direction and extending on the entire width of the fibrous reinforcement, each layer of fibers having a plurality of fibers parallel to each other extending along a direction inclined relative to the length direction, the fibers of two consecutive layers of fibers along the thickness direction have directions inclined relative to each other, and the layers of fibers are sewn together by sewing threads extending along the length direction, the fibrous reinforcement includes a layer of reinforcing fibers having a plurality of fibers parallel to each other extending along the length direction, the layer of reinforcing fibers extending at least on the central part, over a width smaller than the width of the fibrous reinforcement.

公开(公告)号：US20240083121A1

公开(公告)日：2024-03-14

申请号：US17767711

申请日：2020-10-07

Applicant: SAFRAN NACELLES

Inventor： Clément ROLLAND ,  Benjamin PROVOST ,  Maxime LEBEGUE ,  Renaud VENTURE

IPC: B29C70/38 ,  B29C70/54

CPC classification number: B29C70/38 ,  B29C70/54

Abstract: A machine for automatically draping and compacting including a draping head that grasps, deposits and compacts fiber plies on a draping support, the draping head including first and second rigid supports and a gripper including a piece of elastically deformable material having a face to grasp a ply and intended to bear against a draping support surface. The first and second supports are connected to, respectively, a robotic handling device and to the first support and to the gripper. The draping head includes bearing force or pressure measuring elements between the first and second supports or housed in the first support. A control unit is connected to the bearing force or pressure measuring elements to monitor a compaction bearing force or pressure applied by the draping head.