US Patent 12111056 Combustor with central fuel injection and downstream air mixing

A combustor has a mixing body with a central fuel passage with a central axis and adapted to be connected to source of fuel. A nose at a forward end includes a plurality of fuel injection passages allowing fuel to flow from the central fuel passage into an area forward of an outlet from the fuel injection passages. An inner air supply radially outwardly of the central fuel passage delivers air into inner slots extending downstream of outlets of the fuel injection passages such that air and fuel can begin to be mixed and move downstream of an end of the nose. An outer air supply delivers air downstream of the inner air outlet such that air from the outer air supply, air from the inner slots and fuel from the fuel injection passages are all driven forwardly into a combustion chamber. A gas turbine engine is also disclosed.