A fuel spray nozzle for a gas turbine engine includes a feed arm, a fuel tube, a sleeve, and a nozzle head. The feed arm includes a housing. The fuel tube is disposed within the housing and spaced apart from the housing, such that the housing and the fuel tube define an air gap therebetween. The sleeve is disposed within the air gap and spaced apart from the housing. The sleeve at least partially engages with the fuel tube and surrounds at least a portion of the fuel tube along a tube axis. The sleeve is movably disposed around the fuel tube, such that the sleeve and the fuel tube are movable relative to each other along the tube axis. The nozzle head is fluidly connected to the fuel tube and configured to receive the fuel from the fuel tube.

An assembly is provided for a gas turbine engine. This assembly includes a fuel injector. The fuel injector includes a nozzle and a plurality of discrete fuel circuits. The discrete fuel circuits include a first fuel circuit, a second fuel circuit and a third fuel circuit. The nozzle extends axially along an axis to a nozzle tip. The first fuel circuit includes a first fuel outlet disposed at the nozzle tip. The second fuel circuit includes a plurality of second fuel outlets arranged circumferentially about the axis at the nozzle tip in a second fuel outlet array. The third fuel circuit includes a plurality of third fuel outlets arranged circumferentially about the axis at the nozzle tip in a third fuel outlet array.

An assembly is provided for a gas turbine engine. This assembly includes a fuel injector. The fuel injector includes a nozzle and a plurality of discrete fuel circuits. The discrete fuel circuits include a first fuel circuit, a second fuel circuit and a third fuel circuit. The nozzle extends axially along an axis to a nozzle tip. The first fuel circuit includes a first fuel outlet disposed at the nozzle tip. The second fuel circuit includes a plurality of second fuel outlets arranged circumferentially about the axis at the nozzle tip in a second fuel outlet array. The third fuel circuit includes a plurality of third fuel outlets arranged circumferentially about the axis at the nozzle tip in a third fuel outlet array.