18421471. GAS TURBINE OPERATING CONDITIONS (ROLLS-ROYCE PLC)
Contents
GAS TURBINE OPERATING CONDITIONS
Organization Name
Inventor(s)
Christopher P Madden of Derby (GB)
GAS TURBINE OPERATING CONDITIONS
This abstract first appeared for US patent application 18421471 titled 'GAS TURBINE OPERATING CONDITIONS
Original Abstract Submitted
There is provided a method of operating a gas turbine engine including a combustor. The combustor includes a combustion chamber and a plurality of fuel spray nozzles configured to inject fuel into the chamber. The nozzles include a first and second subset of fuel spray nozzles. The combustor is operable in a condition wherein the first subset is supplied with more fuel than the second. A ratio of the number of nozzles in the first subset to the second is 1:2 to 1:5. The method includes operating the engine so a reduction of 20-80% in an average of particles/kg of nvPM in the exhaust when the engine is operating at 85% available thrust for given operating conditions and when the engine is operating at 30% is obtained when fuel provided to the nozzles is a sustainable aviation fuel instead of a fossil-based hydrocarbon fuel. Also provided is a gas turbine engine for an aircraft.
