Fuel injectors for multipoint arrays
A combustor dome system includes an annular combustor dome defining a main axis therethrough. The combustor dome includes opposed upstream and downstream faces, wherein the upstream face is configured to face upstream toward a compressor discharge space, wherein the downstream face is configured to face downstream toward a combustor space. The downstream face has a curved cross-sectional profile. A plurality of nozzles extends at least partially through the combustor dome from the upstream face to the downstream face for injection of fuel into the combustor space. A fuel manifold is in fluid communication with the plurality of nozzles.
1. A nozzle comprising:
a nozzle assembly defining at least one of a fuel circuit and an air circuit therethrough, wherein the nozzle assembly extends along an injection axis; and
a plurality of supports extending from the nozzle assembly circumferentially spaced apart from one another about the injection axis, wherein each support in the plurality of supports extends along a respective support axis, wherein the support axes are circumferentially spaced apart around an insertion axis along which the nozzle assembly can be inserted during assembly into a combustor dome that is oblique relative to the injection axis, wherein each support includes opposing side faces that are aligned with the insertion axis and oppose one another in a circumferential direction about the insertion axis, wherein an outer air circuit is defined circumferentially between side faces of adjacent pairs of the plurality of supports, outboard of the nozzle assembly, wherein each support includes an end face that faces radially outward relative to the insertion axis, wherein each end face is contained in a respective plane that is parallel to the insertion axis and oblique to the injection axis.
2. The nozzle as recited in claim 1 , wherein each support in the plurality of supports is aerodynamically aligned with the injection axis.
3. The nozzle as recited in claim 1 , wherein at least one of the plurality of supports is swept on a non-perpendicular angle relative to the injection axis.
4. The nozzle as recited in claim 1 , wherein at least one of the supports includes a fuel feed passage fluidly connected with a fuel circuit of the nozzle assembly for fluid communication of fuel from a manifold into the fuel circuit.
5. The nozzle as recited in claim 1 , further comprising the combustor dome defining an outer air flow passage therethrough aligned with the injection axis, wherein the nozzle assembly is suspended in the outer air flow passage of the combustor dome with the outer air circuit defined through the outer air flow passage outboard of the nozzle assembly.