THREE STREAM, VARIABLE AREA, VECTORABLE NOZZLE

摘要

An exhaust nozzle for a gas turbine engine may include a plurality of flap trains in the exhaust stream of the gas turbine engine. The flap trains are operable to selectively control three separate flow paths of gas that traverse the engine. A first stream of is the core airflow. The second stream of air is peeled off of the first stream to form a low pressure fan bypass air stream. The third stream of air traverses along the engine casing and is passed over a flap assembly to aid in cooling. The flaps are operable converge/diverge to control the multiple streams of air.

主权项

1. A gas turbine engine having an exhaust nozzle, the engine comprising:
a fan operable to direct intake air to an intake portion of a gas turbine engine, the intake air is separated into multiple streams of air throughout the engine, the multiple streams of air include:
a first stream of air that is directed to a core of an engine;a second stream of air that is partitioned from the first stream of air, the second stream of air traverses a length of the engine;a third stream of air that is separated from the second stream of air, the third stream of air traverses a length of the engine and is injectable to a plenum of a nozzle; and the engine further comprising a nozzle assembly that is selectively operable to control the flow of the first, second and third streams of air in order to accommodate varying flight operating demands.