Patent ID: 7837141

Claim:
A variable area nozzle comprising: a fixed duct section having an inlet and an outlet that is oriented substantially perpendicular to the inlet; and a controllable nozzle member disposed adjacent the outlet of the fixed duct section, the controllable nozzle member having a first flap door and a second flap door, wherein the first flap door and the second flap door present a smoothly contoured inner surface to vary a nozzle throat height and a nozzle pressure of the variable area nozzle based on a deployment angle of the first flap door and the second flap door, wherein the first flap door and the second flap door are each independently rotated by actuators in a first direction and in a second direction opposite of the first direction, wherein the first flap door and the second flap door are rotated in opposite directions to maintainable positions including an open position, a closed position and at least one intermediate position to vary the nozzle throat height and the nozzle pressure, and wherein the first flap door and the second flap door are rotated in a same direction to vector a flow of an exhaust gas in the first direction and in the second direction relative to the outlet of the fixed duct section.