公开(公告)号：US10094390B2

公开(公告)日：2018-10-09

申请号：US15051106

申请日：2016-02-23

Applicant: SNECMA

Inventor： Alexandre Bernard Marie Boisson ,  Caroline Jacqueline Denise Berdou ,  Thomas Alain De Gaillard ,  Matthieu Arnaud Gimat

IPC: F04D29/32 ,  F04D29/34 ,  F01D5/30 ,  F02C7/04 ,  F01D11/00

Abstract: A rotary assembly includes a fan disk including a tooth with an upstream face; a platform mounted on the tooth; and a shroud mounted at the upstream end of the disk. The platform, at its upstream end, includes a step with a radial portion that is extended by an axial portion to form a substantially L-shaped longitudinal section. The axial portion radially retains the platform against the tooth. The radial portion extends along the upstream face of the tooth and includes an opening for having a fastener element passing axially therethrough to mount the shroud on the disk. A face of the shroud includes an element that projects and passes through the opening and comes into contact with the upstream face. The element extends from the face of the shroud over a length that is longer than a thickness of the radial portion of the step of the platform.

公开(公告)号：US11719253B2

公开(公告)日：2023-08-08

申请号：US15141360

申请日：2016-04-28

Applicant: SNECMA

Inventor： Thomas Alain De Gaillard ,  Caroline Jacqueline Denise Berdou ,  Alexandre Bernard Marie Boisson

IPC: F01D5/30 ,  F04D29/32 ,  B29B11/16 ,  F01D5/28 ,  F01D5/26 ,  F02K3/06 ,  F04D29/02 ,  F04D29/34 ,  F04D29/64 ,  B29L31/08

CPC classification number: F04D29/329 ,  B29B11/16 ,  F01D5/26 ,  F01D5/282 ,  F01D5/3007 ,  F02K3/06 ,  F04D29/023 ,  F04D29/34 ,  F04D29/646 ,  B29L2031/08 ,  F05D2220/36 ,  Y02T50/60

Abstract: A preform for a turbine engine blade, comprising a main fiber preform obtained by three-dimensional weaving and comprising: a first longitudinal segment, suitable for forming a blade root; a second longitudinal segment, extending upwards from the first longitudinal segment and suitable for forming an airfoil portion; and a first transverse segment, extending transversely from the junction between the first and second longitudinal segments to a substantially linear distal edge and suitable for forming a first platform; the preform further including at least one attachment tab provided under the first transverse segment at its distal edge, suitable for forming an attachment portion of the platform.