公开(公告)号：US09809299B2

公开(公告)日：2017-11-07

申请号：US14176646

申请日：2014-02-10

Applicant: ROLLS-ROYCE PLC

Inventor： Kenneth Franklin Udall ,  David Michael Beaven ,  Mark John Houle

IPC: B64C11/04 ,  B64C11/26

CPC classification number: B64C11/04 ,  B64C11/26

Abstract: A propeller blade retention arrangement having a propeller blade comprising in radial sequence an aerofoil portion, a shank portion and a root portion. The root portion having first cross-sectional area close to the shank portion and second cross-sectional area at the end distal to the aerofoil portion, wherein the second cross-sectional area is greater than the first cross-sectional area. At least two cheeks each having an inner surface arranged to abut the root portion, an outer surface that is threaded and edge surfaces that abut another of the at least two cheeks; wherein the at least two cheeks are arranged to surround the root portion in circumferential abutment. A collar having a threaded inner surface arranged to threadingly engage the outer surfaces of the at least two cheeks.

公开(公告)号：US09970313B2

公开(公告)日：2018-05-15

申请号：US14716199

申请日：2015-05-19

Applicant: ROLLS-ROYCE PLC

Inventor： David Michael Beaven ,  Kenneth John Mackie ,  Richard Geoffrey Stretton

IPC: F01D17/10 ,  F01D15/02 ,  B64C11/30

CPC classification number: F01D17/10 ,  B64C11/306 ,  F01D15/02 ,  F05D2220/36 ,  F05D2260/79

Abstract: A unison ring assembly comprises a backing plate, and a plurality of pocket-forming portions. The backing plate is formed as an annular disc, with the annular disc being planar in a radial plane of the unison ring assembly. The plurality of pocket-forming portions are equi-spaced circumferentially around the axis of the unison ring assembly, and each of the plurality of pocket-forming portions is attached to the backing plate to form a corresponding radially extending pocket.

公开(公告)号：US09499273B2

公开(公告)日：2016-11-22

申请号：US14163524

申请日：2014-01-24

Applicant: ROLLS-ROYCE PLC

Inventor： David Michael Beaven

IPC: B64D15/12 ,  B64C11/20 ,  B64D15/14

CPC classification number: B64D15/12 ,  B64C11/20 ,  B64D15/14

Abstract: A propeller assembly comprises two or more blade elements each comprising two or more blade element portions arranged sequentially radially along the blade element. Each of the two or more blade element portions that are radially equi-positioned along corresponding ones of the two or more blade elements together form a blade element portion array.Each of the two or more blade element portions comprise at least one heating element with each one of the at least one heating elements that is located in a correspondingly radially positioned blade element portion being connected to one another to form a heating element array.The two or more heating element arrays are adapted to sequentially heat respective ones of the two or more blade element portion arrays so as to de-ice the blade elements.

Abstract translation: 两个或更多个加热元件阵列适于顺序地加热两个或更多个刀片元件部分阵列中的相应的一个以使得刀片元件脱冰。