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An injector includes a plurality of flat, circular plates which provide fuel delivery and cooling of the injector. Fuel delivery passages in the plates have swirl chambers and spray orifices which are formed by chemical etching. A pair of fuel delivery plates define a fuel cavity therebetween, and i

An injector includes a plurality of flat, circular plates which provide fuel delivery and cooling of the injector. Fuel delivery passages in the plates have swirl chambers and spray orifices which are formed by chemical etching. A pair of fuel delivery plates define a fuel cavity therebetween, and include a plurality of radially-outwardly extending spokes, with the spokes from one fuel plate in adjacent, surface-to-surface relation with opposing spokes from the adjacent fuel plate. A fuel passage is defined between each of the opposing spokes, leading from the fuel cavity to a fuel outlet opening at the distal end of each spoke. A fuel tube delivers fuel to the fuel cavity between the plates, from where the fuel is then directed through the outlet openings. Downstream plates shape the fuel into appropriate sprays for ignition. An upstream cooling plate assembly directs air against the upstream fuel plate, and radially outwardly along the spokes of the upstream plate. The air is delivered through an air tube, concentric with the fuel delivery tube.

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1. An injector for a gas turbine engine, the injector comprising:a pair of fuel plates having inner surfaces disposed in adjacent surface-to-surface relation, and defining a fuel cavity therebetween, with one of the fuel plates having an inlet opening to receive fuel, and the other of the fuel plate

1. An injector for a gas turbine engine, the injector comprising:a pair of fuel plates having inner surfaces disposed in adjacent surface-to-surface relation, and defining a fuel cavity therebetween, with one of the fuel plates having an inlet opening to receive fuel, and the other of the fuel plates having at least one outlet opening for dispensing fuel;a fuel tube for directing fuel through the inlet opening and into the fuel cavity, where the fuel then passes through the at least one outlet opening; anda cooling plate disposed in adjacent, surface-to-surface relation with one of the fuel plates, and defining a fluid passage therebetween with the cooling plate having an opening for receiving cooling fluid, wherein the fuel plates and cooling plate are all flat plates, located in co-planar relation to one another. 2. The injector as in claim 1, wherein the fuel plate with the inlet opening is located upstream of the fuel plate with the outlet opening, and the cooling plate is located adjacent the upstream fuel plate, and the fuel tube passes through an opening in the cooling plate, through the fluid passage, and is received in an opening in the upstream fuel plate. 3. The injector as in claim 1, wherein the fuel tube extends along a central axis of the fuel plates, substantially perpendicular to the plates, and further including an air tube concentrically disposed with the fuel tube, directing air into the fluid passage between the cooling plate and the one fuel plate. 4. The injector as in claim 3, wherein the air tube surrounds the fuel tube. 5. The injector as in claim 1, wherein the fuel plates and the cooling plate are all thin flat plates. 6. The injector as in claim 5, wherein the fuel plates and the cooling plate are circular. 7. An injector for a gas turbine engine, the injector comprising:a pair of fuel plates having inner surfaces disposed in adjacent surface-to-surface relation, and defining a fuel cavity therebetween, with an upstream one of the fuel plates having an inlet opening to receive fuel, and a downstream one of the fuel plates having at least one outlet opening for dispensing fuel;a fuel tube for directing fuel through the inlet opening and into the fuel cavity, where the fuel then passes through the at least one outlet opening; anda cooling plate disposed in adjacent, surface-to-surface relation with one of the fuel plates, and defining a fluid passage therebetween with the cooling plate having an opening for receiving cooling fluid, and further including a plurality of outlet openings in the downstream fuel plate, and wherein separate fuel feed passages lead from the fuel cavity to the outlet openings. 8. The injector as in claim 7, wherein the fuel plates each have radial spokes projecting outwardly from a central axis of the plates, with a spoke from one fuel plate located in adjacent opposing relation to a spoke from the other fuel plate, and a fuel passage is defined between each of the adjacent opposing spokes fluidly connected at one end to the fuel cavity and at another end to a dispensing opening in the downstream fuel plate toward the distal end of each of the spokes. 9. The injector as in claim 8, wherein the cooling plate is located adjacent the upstream fuel plate, and the cooling plate includes an opening receiving the fuel tube. 10. The injector as in claim 8, wherein the cooling plate includes spokes projecting radially outward from a central axis of the cooling plate, each of the spokes of the cooling plate being located adjacent a spoke from the upstream fuel plate, and defining therebetween an air passage from the fluid passage for directing air along the upstream surface of the fuel plate spoke. 11. An injector for a gas turbine engine, the injector comprising:pair of fuel plates having inner surfaces disposed in adjacent surface-to-surface relation, and defining a fuel cavity therebetween, with an upstream one of the fuel plates having an inlet opening to receive fuel, and a downs tream one of the fuel plates having at least one outlet opening for dispensing fuel;a fuel tube for directing fuel through the inlet opening and into the fuel cavity, where the fuel then passes through the at least one outlet opening; anda cooling plate disposed in adjacent, surface-to-surface relation with one of the fuel plates, and defining a fluid passage therebetween with the cooling plate having an opening for receiving cooling fluid, and further including a cooling plate stack located upstream from the fuel plates, wherein the cooling plate stack including a main air distribution plate having a downstream surface located adjacent an upstream surface of the upstream fuel plate; a second air distribution plate having a downstream surface located adjacent an upstream surface of the first air distribution plate. 12. An injector for a gas turbine engine, the injector comprising:a pair of fuel plates having inner surfaces disposed in adjacent surface-to-surface relation, and defining a fuel cavity therebetween, with an upstream one of the fuel plates having an inlet opening to receive fuel, and a downstream one of the fuel plates having at least one outlet opening for dispensing fuel;a fuel tube for directing fuel through the inlet opening and into the fuel cavity, where the fuel then passes through the at least one outlet opening; anda cooling plate disposed in adjacent, surface-to-surface relation with one of the fuel plates, and defining a fluid passage therebetween with the cooling plate having an opening for receiving cooling fluid, and further including concentric fuel and air tubes directing fuel and air to the injector, with the fuel tube passing through the cooling plate and terminating at the upstream fuel plate, and the air tube terminating at the cooling plate. 13. An injector for a gas turbine engine, the injector comprising:a pair of fuel plates having inner surfaces disposed in adjacent surface-to-surface relation, and defining a fuel cavity therebetween, with an upstream one of the fuel plates having an inlet opening to receive fuel, and a downstream one of the fuel plates having at least one outlet opening for dispensing fuel;a fuel tube for directing fuel through the inlet opening and into the fuel cavity, where the fuel then passes through the at least one outlet opening; anda cooling plate disposed in adjacent, surface-to-surface relation with one of the fuel plates, and defining a fluid passage therebetween with the cooling plate having an opening for receiving cooling fluid, and further including an additional plate located in surface-to-surface contact with the downstream fuel plate, and having a swirl chamber located in adjacent relation to each dispensing opening providing fuel received from the dispensing opening with a swirl component of motion.