公开(公告)号：US20230374939A1

公开(公告)日：2023-11-23

申请号：US18199260

申请日：2023-05-18

Applicant: ROLLS-ROYCE plc

Inventor： Vasileios PACHIDIS ,  David J. RAJENDRAN

IPC: F02C7/042 ,  F02K3/06

CPC classification number: F02C7/042 ,  F02K3/06 ,  F05D2240/14 ,  F05D2240/12 ,  F05D2260/606

Abstract: A gas turbine engine includes a core engine casing and a bypass duct defined between a nacelle and the core engine casing. The gas turbine engine further includes a plurality of diverter fences pivotally coupled to the core engine casing. Each diverter fence is pivotable relative to the core engine casing about a pivot axis, which is circumferentially and obliquely inclined with respect to a principal rotational axis. Each diverter fence is configured to move between a first position in which an outboard edge is disposed adjacent to a casing outer surface, and a second position in which the outboard edge is radially spaced apart from the casing outer surface, such that each diverter fence radially extends outwards from the casing outer surface into the bypass duct.

公开(公告)号：US20230407815A1

公开(公告)日：2023-12-21

申请号：US18199245

申请日：2023-05-18

Applicant: ROLLS-ROYCE plc

Inventor： Vasileios PACHIDIS ,  David J. RAJENDRAN

IPC: F02K1/70 ,  F02K3/06 ,  F02K3/075

CPC classification number: F02K1/70 ,  F02K3/06 ,  F05D2240/14 ,  F05D2260/606 ,  F02K3/075

Abstract: A gas turbine engine includes a core engine casing, a bypass duct and a core engine duct. The gas turbine engine further includes a plurality of flaps pivotally coupled to the core engine casing and arranged circumferentially around a principal rotational axis. Each flap extends from a first casing end and is configured to pivotally rotate relative to core engine casing about a pivot axis between a first position and a second position. In the first position, each flap is disposed in a circumferential direction and is radially disposed between a plurality of outlet guide vanes and a plurality of stator vanes. In the second position, each flap is inclined to the first position and extends at least partially into the bypass duct and the core engine duct.