公开(公告)号：US20190039265A1

公开(公告)日：2019-02-07

申请号：US16155417

申请日：2018-10-09

申请人： Safran Nacelles

发明人： Bertrand DESJOYEAUX ,  Benjamin PROVOST ,  Sébastien LOUCHARD ,  Fabien DEPEUX

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

摘要： 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：US20200095954A1

公开(公告)日：2020-03-26

申请号：US16693551

申请日：2019-11-25

申请人： Safran Nacelles

发明人： Bertrand DESJOYEAUX ,  Benjamin PROVOST ,  Fabien DEPEUX ,  Davi SILVA DE VASCONCELLOS

IPC分类号： F02K1/48 ,  B29C70/22 ,  D03D3/02 ,  D03D3/08

摘要： 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.

公开(公告)号：US20200180188A1

公开(公告)日：2020-06-11

申请号：US16793523

申请日：2020-02-18

申请人： SAFRAN NACELLES

发明人： Benjamin PROVOST ,  Bertrand DESJOYEAUX ,  Sébastien LOUCHARD ,  Fabien DEPEUX

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

摘要： 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

申请人： SAFRAN NACELLES

发明人： Benjamin PROVOST ,  Bertrand DESJOYEAUX ,  Sébastien LOUCHARD ,  Fabien DEPEUX

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

摘要： 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.