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.

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.

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.