Patent ID: 8887507
Filing Date: 2014-11-18
Classification: F23C,F23R

Abstract:
1. An actuator system, comprising: a plurality of outer fuel nozzle assemblies of a gas turbine engine abutting one another in a surrounding relationship to a central fuel nozzle assembly; the plurality of outer fuel nozzle assemblies each including a center body and a shroud disposed about the center body; at least one of the plurality of outer fuel nozzle assemblies comprising an actuator mechanism configured to actively effect axial movement of the respective center body while leaving the respective shroud fixed, the actuator mechanism and the fuel nozzle assembly being arranged to maintain a constant cross-section between the centerbody and the shroud at a point along the shroud, which exhibits a constant mass flow rate of air flowing between the centerbody and the shroud at the point, during the axial movement; a controller configured to control operation of the actuator mechanism, wherein the actuator mechanism connects to the respective center body by mechanical linkages.