公开(公告)号：US20200095954A1

公开(公告)日：2020-03-26

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: F02K1/48 ,  B29C70/22 ,  D03D3/02 ,  D03D3/08

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：US20170370247A1

公开(公告)日：2017-12-28

申请号：US15672638

申请日：2017-08-09

Applicant: Safran Nacelles

Inventor： Benjamin PROVOST ,  Bertrand DESJOYEAUX ,  Sébastien LOUCHARD ,  Arnaud MARICAL

IPC: F01D25/00 ,  F01D25/24 ,  D03D49/00 ,  D03D3/06 ,  F02K1/64

CPC classification number: F01D25/005 ,  D03D3/06 ,  D03D25/005 ,  D03D49/00 ,  D10B2505/02 ,  F01D25/24 ,  F02K1/64 ,  F05D2220/323 ,  F05D2230/50 ,  F05D2240/10 ,  F05D2300/603

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.