公开(公告)号：US11814980B2

公开(公告)日：2023-11-14

申请号：US17966285

申请日：2022-10-14

Applicant: ROLLS-ROYCE plc

Inventor： Sean A Walters ,  John Irving ,  Nomesh P Kandaswamy ,  Jessica Kennedy ,  Benjamin Littley ,  Kali Charan Nayak ,  Guy D Snowsill

IPC: F01D5/06 ,  F01D5/30

CPC classification number: F01D5/06 ,  F01D5/30 ,  F05D2220/323 ,  F05D2250/71

Abstract: A bladed disc system for a turbine engine having a disk portion and a plurality of blade portions which are associated with a stator section and an intercavity sealing portion, disc portion shaped such that blade portions are able to fit within firtree slot in disc portion, blade portion having aerofoil section and root section, aerofoil section having portion shaped such that they extend proximate to intercavity sealing portion, disc portion extending from portion that connects with drum to outer edge at which blade portions are connected with disc portion having width transition region in which thickness of disc increases from point at which disc connects to drum to outer edge at which it holds blade portions, and wherein width transition region has curved width transition region with radius r, and an overhanging portion which extends into the intercavity spacing between the width transition region and the intercavity sealing portion.