PROPORTIONAL FORCE MODIFICATION OF PASSIVE SPOOL FOR CONTROL OF SIMPLEX CIRCUIT OF FUEL NOZZLES

A system includes an injector (102) including a scheduling valve assembly (104) and a nozzle (106) in fluid communication with the valve assembly (104). The scheduling valve assembly (104) is configured for regulation of flow from an inlet (108) of the injector to the nozzle (106). The injector (102) includes one fluid circuit (112) between the inlet (108) of the injector and a respective outlet of the nozzle (106). A solenoid valve (114) is connected in fluid communication with the scheduling valve assembly (104). The solenoid valve (114) is configured to adjust position of a hydromechanical valve spool (116) of the valve assembly (104).