公开(公告)号：US20240351298A1

公开(公告)日：2024-10-24

申请号：US18580668

申请日：2022-07-13

Applicant: SAFRAN NACELLES ,  SAFRAN NACELLES LIMITED

Inventor： Julien LORRILLARD ,  Bertrand Léon Marie DESJOYEAUX

IPC: B29C70/44 ,  B29C70/54 ,  B29L31/30

CPC classification number: B29C70/443 ,  B29C70/446 ,  B29C70/544 ,  B29C70/549 ,  B29L2031/3076

Abstract: The invention relates to an assembly structure (10) for manufacturing a composite part. The structure comprises:—a skin preform (Pp) and a generally omega-shaped stiffener preform (PT) each having first and second opposing surfaces, the stiffener preform extending along and opposite the first surface of the skin preform. longitudinally and transversely in the form of a stiffener preform cross-section,—a rigid skin tooling (Op) disposed opposite the entire second surface (Sp2) of the skin preform,—a local rigid stiffener tooling (Or1, Or2) extending transversely around the stiffener preform cross-section with a transverse dimension smaller than the transverse dimension of the first surface of the skin preform.

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：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：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：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.