Internal fuel manifold with turned channel having a variable cross-sectional area

摘要

A method of manufacturing an internal manifold of a gas turbine engine including machining an annular channel (36) in a ring (22) by a turning process, and varying a position of a tool bit (80) relative to the surface (38) of the ring (22) as a function of a relative circumferential location of the tool bit (80) around the ring (22) such that the channel (36) has a cross-sectional area that varies around a circumference of the ring (22).