Patent ID: 8584442

Claim:
A gas turbine engine comprising a casing defining a flow passage through the gas turbine engine, a variable area nozzle being arranged at a downstream end of the casing, the variable area nozzle having a plurality of first movable members arranged around and extending in a downstream direction from the downstream end of the casing and a plurality of second movable members arranged around and extending in a downstream direction from the downstream end of the casing, in a first mode of operation the first movable members are in an un-actuated position and the second movable members are in an un-actuated position, in a second mode of operation the first movable members are in an actuated position and the second movable members are in the un-actuated position and in a third mode of operation the first movable members are in the un-actuated position and the second movable members are in an actuated position, wherein the first movable members are movable outwardly from the un-actuated position to the actuated position and the second movable members are movable inwardly from the un-actuated position to the actuated position, wherein the variable area exhaust nozzle comprises a plurality of fixed members arranged around the annular casing and extending in a downstream direction from the downstream end of the casing, with each fixed member being positioned between one of the first movable members and one of the second movable members.