Fan variable area nozzle for a gas turbine engine fan nacelle with sliding actuation system

摘要

A fan variable area nozzle (FVAN) includes a flap assembly which varies a fan nozzle exit area. An actuator system drives a sliding drive ring relative a multitude of slider tracks mounted to a fan nacelle to adjust each flap of the flap assembly through the flap linkage to pitch the flap assembly about a circumferential hinge line to vary the diameter of the annular fan nozzle exit area between the fan nacelle and the core nacelle. The FVAN may be separated into a multiple of drive ring sectors which are each independently adjustable by an associated actuator of the actuator system to provide a low profile drag asymmetrical fan nozzle exit area.

主权项

1. A nacelle assembly for a gas turbine engine comprising:
a core nacelle defined about an axis; a fan nacelle mounted at least partially around said core nacelle, said fan nacelle having a fan variable area nozzle defined about said core nacelle; a drive ring mounted within said fan nacelle; a flap linkage mounted to each of a multiple of flaps and said drive ring; and, an actuator system which drives said drive ring along said axis to vary a fan nozzle exit area defined by said fan variable area nozzle.