公开(公告)号：US20190218912A1

公开(公告)日：2019-07-18

申请号：US16234006

申请日：2018-12-27

Applicant: ROLLS-ROYCE plc

Inventor： Matthew D. CURREN ,  Matthew A C. HOYLAND

IPC: F01D5/02

CPC classification number: F01D5/02 ,  F01D5/3015 ,  F01D11/008 ,  F02K3/06 ,  F05D2220/32 ,  F05D2220/36 ,  F05D2240/24 ,  F05D2260/97

Abstract: An annulus filler (32, 132) for mounting on a rotor disc (24, 124) of fan (13, 113) of a gas turbine engine (10), the annulus filler (32, 132) including a top wall (42, 142) arranged to bridge a circumferential gap (34) between two adjacent fan blades (26, 126) extending from the rotor disc (24, 124), along an axial length of the fan blades (26, 126), wherein the top wall (42, 142) is arranged to define an airflow surface (36, 136) for air being drawn between the two adjacent fan blades (26, 126) in an axial direction, from a first end (30a, 130a) of the fan (13, 113), to a second end (30b, 130b) of the fan (13, 113); wherein the annulus filler (32, 132) defines a volume (68, 168) beneath the top wall (42, 142); and wherein the annulus filler (32, 132) further includes an end wall (70, 170) arranged to close the volume (68, 168) at the second end (30b, 130b) of the fan (13, 113), to form a windage shield.