NACELLE ASSEMBLY FOR A VARIABLE AREA FAN NOZZLE OF A GAS TURBINE ENGINE

摘要

A nacelle assembly for a high-bypass gas turbine engine includes a variable area fan nozzle having a first fan nacelle section and a second fan nacelle section. The second fan nacelle section being axially movable relative the first fan nacelle section to define an auxiliary port to vary a fan nozzle exit area and adjust fan bypass airflow, the second fan nacelle section includes at least one cowl with an inner portion, an outer portion and a multiple of stiffeners there between to increase a flutter margin.