The velocity and turbulence levels downstream of eight variations of a model gas turbine, aerating, fuel nozzle have been measured. The nozzle configurations were assemblies that purposefully altered the airflow through the nozzle by misaligning swirlers, changing the number of vanes in a swirler, or contouring swirl vane trailing edges. Data were acquired by a traversing, two-component laser velocimeter in planes 0.060 in. (1.5 mm) or 2.50 in. (6.4 cm) downstream from the nozzle exit. Analyses of these data indicated that very symmetric flowfields can be produced. Such control was easier to achieve for the airflow than the fuel, supporting the position that nozzle patternation quality was more dependent on the fuel distribution in the nozzle. The presence of swirler wakes could always be discerned at the nozzle exit; the extreme variations imposed by coarse swirlers could dominate the flow. Such airflow influences were not apparent in the velocity profiles at downstream locations. However, their influence in convecting a higher fuel mass flux persisted from the nozzle exit and produced extreme variations in the spray pattern.