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.