Patent ID: 6826901
Filing Date: 2004-12-07
Classification: B64D,F02K,F05D

Abstract:
A segmented flow nozzle for a engine to inhibit noise emitted from the jet engine, said flow nozzle comprising:a circumferential nozzle inner wall; a circumferential nozzle outer wall spaced apart from said inner wall to define a flow path therebetween; one of said inner and outer walls curving toward the other to define a protrusion, at a first region of said exhaust gas flow path, which extends into said flow path to reduce a cross sectional area of said flow path, thereby forming a choke flow control region; said flow nozzle including a segmented region downstream of said choke flow control region; and through the segmented region of the nozzle, said one wall gradually curving away from the other, and then back toward the other, to provide an increased cross-sectional area for un-choked flow control.