Patent ID: 8726668

Claim:
A fuel nozzle assembly comprising: a pilot fuel injector tip substantially centered about a centerline axis in an annular pilot inlet to a pilot mixer, substantially concentric primary and secondary pilot fuel nozzles in the pilot fuel injector tip, the primary and secondary pilot fuel nozzles having divergent conical primary and secondary exit orifices culminating at circular primary and annular secondary exits respectively, the circular primary exit located axially aft and downstream of the annular secondary exit, an inner pilot swirler located radially outwardly of and adjacent to the pilot fuel injector tip, an outer pilot swirler located radially outwardly of the inner swirler, an axially aft or downstream extending injector cooling flowpath disposed radially outwardly of and surrounding the outer pilot swirler, an annular wall section radially disposed between the outer pilot swirler and an annular cooling flowpath inlet to the injector cooling flowpath, and an annular chamfered leading edge of the annular wall section having a radially inwardly facing conical chamfered surface.