公开(公告)号：US10385805B2

公开(公告)日：2019-08-20

申请号：US15725238

申请日：2017-10-04

Applicant: ROLLS-ROYCE plc

Inventor： Jack F Colebrooke

IPC: F02K1/70 ,  F02K1/06 ,  F02K1/00 ,  F02K1/12 ,  F02K9/80 ,  F02K1/30

Abstract: A variable geometry exhaust nozzle arrangement includes a plurality of hingable exhaust petals defining a perimeter of an exhaust duct and an annular ring slidably engagable against a radially outer surface of each petal. The annular ring is coupled to a plurality of circumferentially spaced actuator arrangements, each including first and second circumferentially spaced parallel actuator arms pivotably coupled to the annular ring at a first end and to a slide arrangement at a second end. Each slide arrangement is mounted for linear sliding movement relative to the annular ring, such that sliding movement of each slide arrangement causes pivoting of the first and second actuator arms to thereby translate the annular ring in one or both of a longitudinal direction and a lateral direction.

公开(公告)号：US10662896B2

公开(公告)日：2020-05-26

申请号：US15840751

申请日：2017-12-13

Applicant: ROLLS-ROYCE plc

Inventor： Jonathan V Watson ,  Jack F Colebrooke

IPC: F02K1/12 ,  F02K1/15

Abstract: A nozzle for a gas turbine engine. An array of convergent petals hingedly coupled to a nozzle exit of fixed diameter. An array of divergent petals, each divergent petal hingedly coupled to one of the array of convergent petals. A cam surface associated with the array of convergent petals. A pivot point coupled to the array of divergent petals by a first linkage and to a fixed point by a second linkage. A cam follower coupled to the second linkage by a third linkage, the cam follower arranged to abut and travel in contact with the cam surface. An actuator coupled to the cam follower and arranged to translate the cam follower along the cam surface to move the convergent and divergent petals.