A combustor system for an aerial vehicle can include an outer case with a first and second end, an inner combustor case with a lumen, a central combustor chamber, an air flow path between the outer case and inner combustor case, an integrated air scoop attached to the inner combustor case at the lumen that directs air from the air flow path into the central combustor chamber, a wedge within the integrated air scoop, a second integrated air scoop attached to the outer case, a bifurcated orifice integrated into the second integrated air scoop, a fuel manifold and fuel orifice within the first integrated air scoop, and a splash plate with a first and second face, the splash plate extending through the lumen into the central combustor chamber. The first and second integrated scoops can interlock and seal by pushing the wedge into the bifurcated orifice.

An assembly is provided for an engine. This engine assembly includes an engine structure and a fuel injector. The engine structure includes an injector receptacle and a fuel supply passage. The injector receptacle extends longitudinally through the engine structure along a centerline. The fuel supply passage extends laterally within the engine structure to the injector receptacle. The fuel injector is mated with the injector receptacle. The fuel injector includes a nozzle passage and a nozzle outlet. The nozzle passage spirals about the centerline within the fuel injector towards the nozzle outlet. The nozzle passage fluidly couples the nozzle outlet to the fuel supply passage.

An assembly is provided for an engine. This engine assembly includes an engine structure and a fuel injector. The engine structure includes an injector receptacle and a fuel supply passage. The injector receptacle extends longitudinally through the engine structure along a centerline. The fuel supply passage extends laterally within the engine structure to the injector receptacle. The fuel injector is mated with the injector receptacle. The fuel injector includes a nozzle passage and a nozzle outlet. The nozzle passage spirals about the centerline within the fuel injector towards the nozzle outlet. The nozzle passage fluidly couples the nozzle outlet to the fuel supply passage.