Gas turbine engine with variable area exhaust nozzle

A turbofan gas turbine engine (10) variable area fan exhaust nozzle (12) is arranged at the downstream end of a fan casing (17). The variable area nozzle (12) comprises a plurality of first movable members (18) arranged circumferentially around and extending in a downstream direction from the fan casing (17) and a plurality of second movable members (20) arranged circumferentially around and extending in a downstream direction from the fan casing (17). The first and second movable members (18, 20) are arranged alternately around the variable area nozzle (12). During cruise conditions the first and second movable members (18, 20) are in un-actuated positions. At take off conditions the first movable members (18) are in an actuated position and the second movable members (20) are in the un-actuated position to increase the area of the nozzle (12). At top of climb conditions the first movable members (18) are in the un-actuated position and the second movable members (20) are in an actuated position. The first movable members (18) are movable generally radially outwardly from the un-actuated position to the actuated position and the second movable members (20) are movable radially inwardly from the un-actuated position to the actuated position.