公开(公告)号：US09752449B2

公开(公告)日：2017-09-05

申请号：US14457872

申请日：2014-08-12

Applicant: ROLLS-ROYCE PLC ,  FACC AG

Inventor： Kristofer John Bottome ,  James Andrew Lee ,  Paul Mason ,  Ewan Fergus Thompson ,  Gion Barandun ,  Markus Henne ,  Konstantin Horejsi ,  Martin Fleischmann ,  Christof Obertscheider ,  Thomas Keusch

IPC: F01D11/00

CPC classification number: F01D11/008 ,  F05D2250/712 ,  F05D2300/501 ,  F05D2300/603

Abstract: An annulus filler, mounted to a rotor disc of a gas turbine engine and bridging the gap between two adjacent blades attached to the rotor disc, is disclosed. The annulus filler, formed from a polymer matrix composite material, includes an outer lid, defining an airflow surface for air drawn through the engine in an axial airflow direction, and a support structure, connectable to the rotor disc, to support the rear of the lid on the rotor disc. The support structure has two support walls extending from opposing lateral sides of the lid to an attachment strap for receiving a hook on the rotor disc, the attachment strap bridging the support walls. Under centrifugal loads, the opposing support walls resiliently deform. Each support wall has a concave rear edge. Each rear edge has a first curved section, a second curved section and a substantially straight section therebetween.

公开(公告)号：US09739162B2

公开(公告)日：2017-08-22

申请号：US14457845

申请日：2014-08-12

Applicant: ROLLS-ROYCE PLC

Inventor： Kristofer John Bottome ,  Paul Mason ,  James Andrew Lee ,  Ewan Fergus Thompson

IPC: F01D11/08 ,  F01D11/00 ,  F01D5/02

CPC classification number: F01D11/08 ,  F01D5/02 ,  F01D11/008 ,  F05D2220/32 ,  F05D2220/36 ,  F05D2230/60 ,  F05D2240/55 ,  F05D2300/603 ,  F05D2300/6034

Abstract: An annulus filler is provided for mounting to a rotor disc of a gas turbine engine and bridging the gap between two adjacent blades attached to the rotor disc. The annulus filler is substantially entirely formed from a polymer matrix composite material. It has an outer lid which defines an airflow surface for air being drawn through the engine in an axial airflow direction, and a support structure which is connectable to the rotor disc to support the lid on the rotor disc. The support structure has two support walls extending from opposing lateral sides of the lid to an attachment strap for receiving a hook on the rotor disc, the attachment strap bridging the support walls. In use, under centrifugal loads, the opposing support walls resiliently deform to allow outward radial movement of the lid. Each support wall is thickened in a region neighboring the attachment strap.