公开(公告)号：US12000303B2

公开(公告)日：2024-06-04

申请号：US18039611

申请日：2021-11-29

申请人： Safran Aircraft Engines

发明人： Carole Onja Rakotoarisoa ,  Teddy Fixy ,  Guillaume Pascal Jean-Charles Gondre ,  Julien Paul Schneider-Die-Gross

IPC分类号： F01D5/14 ,  F01D5/28

CPC分类号： F01D5/147 ,  F01D5/141 ,  F01D5/282 ,  F05D2240/303 ,  F05D2300/6034

摘要： The invention relates to a fan blade (3) made of composite material the fibrous reinforcement of which comprises first strands (12) having a first stiffness, second strands (13) having a second stiffness and third strands (14) having a third stiffness lower than the first stiffness and greater than the second stiffness, the blade comprising a first portion (15) comprising only first strands (12), a second portion (16) comprising only second strands (13) and a third portion (17) which is located between the first and second portions (15, 16) and which comprises both first, second and third strands (12, 13, 14); there is a gradual transition of properties at the interface between the different portions (15, 16, 17).