Patent ID: 6148600
Filing Date: 2000-11-21
Classification: F23R

Abstract:
A one-piece cowl for use in assembled relationship with a combustor of a gas turbine engine, said cowl being of a generally annular configuration defining a central cowl axis and being axially elongated and aerodynamically contoured relative to said central cowl axis, comprising:(a) an inner annular portion;(b) an outer annular portion; and(c) a plurality of circumferentially spaced radial ligaments connecting said inner and outer annular portions so as to form a corresponding number of openings through a middle portion of said cowl, each said radial ligament having a designated area which enables said radial ligaments to sustain the stress levels imposed on said cowl to prevent high cycle fatigue and each said opening having a designated area which enables insertion of at least one fuel nozzle therein without adversely affecting air flow therethrough.