18466508. BUILT-IN TEST OF ACTIVELY CONTROLLED FUEL NOZZLES (RTX CORPORATION)
BUILT-IN TEST OF ACTIVELY CONTROLLED FUEL NOZZLES
Organization Name
Inventor(s)
Alessio Pulliero of Glastonbury CT (US)
Gary Mcbrien of Glastonbury CT (US)
BUILT-IN TEST OF ACTIVELY CONTROLLED FUEL NOZZLES
This abstract first appeared for US patent application 18466508 titled 'BUILT-IN TEST OF ACTIVELY CONTROLLED FUEL NOZZLES
Original Abstract Submitted
A method for detecting performance degradation of an AC Nozzle in a gas turbine engine including operating the gas turbine engine under a normal operating condition, maintaining the fuel flow rate at a constant fuel flow rate, determining a delta pressure Pacross an N number of Proportional Metering Valves (PMVs) as the gas turbine engine is operating under the normal operating condition, selecting a PMV and an AC Nozzle, controlling the PMV to modify a fuel flow rate to the selected AC Nozzle to cause the gas turbine engine to operate under a modified fuel flow condition, determining a delta pressure Pacross the N number of PMVs as the gas turbine engine is operating under the modified operating condition and comparing the delta pressure Pwith the delta pressure Pto determine if the selected AC Nozzle is uncalibrated or has failed.