公开(公告)号：US10364687B2

公开(公告)日：2019-07-30

申请号：US14847889

申请日：2015-09-08

Applicant: ROLLS-ROYCE PLC

Inventor： Keith Christopher Goldfinch ,  Antonios Kalochairetis

IPC: F01D5/32 ,  F02K3/06 ,  F04D29/32

Abstract: A fan for gas turbine engine that includes hub and annular array of fan blades mounted to hub and extending radially outwardly from hub, each fan blade includes blade root. The hub includes a plurality of hub grooves having shape complimentary to shape of blade root and each hub groove receives and radially retains one blade root. A slot is provided on the suction side and on the pressure side of each blade root. Plurality of keys is provided, each key engages with slots in one blade root and with corresponding hub groove so as to axially retain fan blade. The key includes two arms and joining member, two arms are received in slots provided on blade root and joining member extends between the arms. Interface is defined between key arms and slots in blade root, and greater or equal percentage of interface is curved than is planar.

公开(公告)号：US10724536B2

公开(公告)日：2020-07-28

申请号：US15898305

申请日：2018-02-16

Applicant: ROLLS-ROYCE plc

Inventor： Antonios Kalochairetis ,  Gabriel Gonzalez-Gutierrez

IPC: F04D29/34 ,  F04D29/32 ,  F02K3/06 ,  F01D5/10 ,  F01D5/30 ,  F01D5/16 ,  F01D5/32 ,  F04D29/66

Abstract: A fan for a gas turbine engine, the fan comprising a first set of fan blades, each fan blade comprising a root and an axial retention feature provided on the root at a first position, and a second set of fan blades, each fan blade comprising a root and an axial retention feature provided on the root at a second position. Relative to the respective blade on which the respective retention feature is provided, the first position is different to the second position.