Pilot premix nozzle and fuel nozzle assembly

A fuel nozzle, comprising:

• an outer tube having an upstream end axially spaced from a downstream end;
• an inner tube extending axially within the outer tube, wherein the inner tube is radially spaced from the outer tube so as to define an annular air passage therebetween;
• and
• a premix pilot nozzle coupled to the downstream end of the outer tube, the premix pilot nozzle comprising:
• a nozzle body having a forward wall axially spaced from an aft wall, an outer band coupled to the downstream end of the outer tube, the outer band extending axially between the forward wall and the aft wall, a tip portion extending axially downstream from the aft wall wherein the tip portion includes a downstream wall, a fuel tube defining a fuel inlet plenum that extends coaxially within the nozzle body and that is partially defined by an inner surface of the downstream wall wherein the fuel inlet plenum is in fluid communication with the inner tube, a fuel distribution plenum defined within the nozzle body radially outwardly from and in fluid communication with the fuel inlet plenum and a plurality of premix passages extending helically around the fuel inlet plenum within the fuel distribution plenum;
• and
• a plurality of air passages annularly arranged around the plurality of premix passages, wherein each premix passage of the plurality of premix passages is in fluid communication with the fuel distribution plenum.