公开(公告)号：US09709156B2

公开(公告)日：2017-07-18

申请号：US15135096

申请日：2016-04-21

Applicant: ROLLS-ROYCE plc

Inventor： John R Webster

IPC: F16H57/08 ,  F16C17/02 ,  F16H57/04 ,  F16C3/02 ,  F16H1/28 ,  F02C7/36

CPC classification number: F16H57/08 ,  F02C7/36 ,  F05D2260/40311 ,  F16C3/02 ,  F16C17/02 ,  F16C2360/23 ,  F16C2361/61 ,  F16H1/28 ,  F16H57/0479 ,  F16H2057/085

Abstract: A hollow cylindrical rotary bearing shaft for a planet gear of an epicyclic gear train, has a cylindrical outer surface accommodating the planet gear, and a wall thickness. The wall thickness of the bearing shaft varies circumferentially around a diameter of the bearing shaft so as to produce a pre-determined circumferential variation in the wall thickness.

公开(公告)号：US10408134B2

公开(公告)日：2019-09-10

申请号：US15155700

申请日：2016-05-16

Applicant: ROLLS-ROYCE plc

Inventor： John R Webster

IPC: F02C7/36 ,  F16H55/12 ,  F16H55/17 ,  F16H1/28

Abstract: A gear including an inner bearing part; an outer part including a plurality of teeth; an intermediate part between the inner bearing part and the outer part, the intermediate part including a plurality of support members extending radially between the inner bearing part and the outer part, the plurality of support members being distributed along a longitudinal axis of the gear.

公开(公告)号：US10100663B2

公开(公告)日：2018-10-16

申请号：US15155359

申请日：2016-05-16

Applicant: ROLLS-ROYCE plc

Inventor： David M Longworth ,  Jonathan A Jarvis ,  Jonathan A Cherry ,  Hugh J Blakemore ,  John R Webster

IPC: F01D17/14 ,  F04D29/56 ,  F01D17/16

Abstract: An actuation arrangement for effecting actuation of pivotable vane, for example, variable inlet guide vane in gas turbine engine. The actuation arrangement includes an actuator having a support plate and pivotable plate. The pivotable plate is fixedly connected to pivotable vane and pivotable plate and pivotable vane are pivotable about a pivot axis. The actuator further includes at least one actuation element having a length extending from support plate to proximal a transverse edge portion of pivotable plate substantially perpendicular to pivot axis. The or each actuation element is fixedly connected to each of the support and pivotable plates and formed of a material that changes dimension upon application of external energy. Thus, upon application of external energy, for example, heat, a change in length of the or each actuation element occurs such that change in length effects pivoting of pivotable plate and pivotable vane about the pivot axis.