Patent ID: 7454914
Filing Date: 2008-11-25
Classification: F23D,F23R,Y10T

Abstract:
1. A method of fabricating a fuel distributor adapted to swirl fuel in a combustor assembly of a gas turbine engine, the method comprising: a) providing an elongated cylindrical member having a central air passage; b) forming at least two helical grooves along an axially extending outer surface of the elongated cylindrical member to obtain a grooved surface, each of the helical grooves defining at least one complete turn; c) forming a frustro-conical surface at one end of the grooved surface of the elongated cylindrical member such that radially outwardly oriented channel exit ports are created where the helical grooves intersect the frustro-conical surface; the channel exit ports being tangential to the outer frustro-conical surface and d) fitting the elongated cylindrical member into a tubular member such that the cooperation of an inner surface of the tubular member with the outer surface having helical grooves forms independent helical channels adapted to communicate fuel swirlingly to the combustor assembly.