Patent ID: 7222488
Filing Date: 2007-05-29
Classification: F23R,Y02T

Abstract:
1. A fabricated cowl for a double annular combustor of a gas turbine engine having a longitudinal axis extending therethrough, comprising: (a) a middle annular portion including a plurality of circumferentially spaced radial slots formed therein; (b) an outer annular portion including a plurality of circumferentially spaced windows of desired size formed therein, wherein outer radial members connecting said outer annular portion and said middle annular portion are defined between adjacent windows; (c) an inner annular portion including a plurality of circumferentially spaced windows of desired size formed therein, wherein inner radial members connecting said inner annular portion and said middle annular portion are defined between adjacent windows; and, (d) a plurality of circumferentially spaced stiffening ribs, each said stiffening rib further comprising: wherein each said radial slot in said middle annular portion is sealed and each said stiffening rib is connected to said outer, inner and middle annular portions.