公开(公告)号：US20180283206A1

公开(公告)日：2018-10-04

申请号：US15933423

申请日：2018-03-23

Applicant: ROLLS-ROYCE plc

Inventor： Kieran P. LUCEY ,  Stephen J. BENDALL

IPC: F01D21/04 ,  F01D5/02 ,  F02C7/06

CPC classification number: F01D21/045 ,  F01D5/026 ,  F01D21/08 ,  F02C7/06 ,  F04D29/044 ,  F04D29/053 ,  F05D2220/36 ,  F05D2240/60 ,  F05D2240/61

Abstract: A fan is mounted on a fan shaft which constitutes part of a mainline shaft assembly centered for rotation on an engine axis X-X of a gas turbine engine. When in operation, the fan rotates about the engine axis X-X. A stub-shaft is arranged radially outwardly and concentrically with the fan shaft and adjoins an upstream facing face of a bearing sleeve. A fan catcher arm extends from the stub-shaft through the bearing sleeve and joins a fan catcher ring arranged downstream of the bearing sleeve and having an upstream facing face arranged to abut against a downstream facing face of the bearing sleeve in the event of a fan blade-off. Immediately downstream of the fan catcher ring is formed a shaft end which is configured to couple with an axially adjacent end of a low pressure compressor shaft. Immediately downstream of the bearing sleeve is a shaft end configured to connect with a turbine shaft.