There is disclosed a flap for a variable area exhaust nozzle of a gas turbine engine. The flap comprises a support structure and a gas shield connected to the support structure, wherein the support structure is corrugated to accommodate thermal expansion of the gas shield in a direction of corrugation.

A flap for a variable area exhaust nozzle of a gas turbine engine. The flap includes a support structure and a gas shield retained thereto. The support structure and the gas shield include a pair of grooves extending in a longitudinal direction of the flap and a pair of corresponding tongues that engage the pair of grooves so as to retain the gas shield to the support structure and to allow movement of the gas shield by thermal expansion along the support structure in the longitudinal direction.

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.