Turbine Engine and Fuel Nozzle Assembly Therefor

A turbine engine, comprising:

• a compressor section, a combustion section, and a turbine section in a serial flow arrangement, the combustion section comprising:
• a combustor liner at least partially defining a combustion chamber;
• and
• a gaseous fuel nozzle assembly defining a fuel nozzle assembly centerline and comprising:
• an annularly arranged set of mixing tubes, with each mixing tube of the set of mixing tubes having a mixing tube upstream end, a mixing tube downstream end, a tangential mixing tube air inlet, and defining a mixing tube centerline,
• an annularly arranged set of fuel jets with each fuel jet from the set of fuel jets fluidly coupled to a corresponding one of the set of mixing tubes, and
• an air passage including an annular air plenum and a set of air passage outlets, with each air passage outlet of the set of air passage outlets tangentially, fluidly coupled to a corresponding one of the mixing tube air inlets.