Variable geometry air-fuel injector

Details Variable geometry air-fuel injector Variable geometry air-fuel injector

F - Mech Eng,Light,Heat,Weapons

23

R

F23R 3/04 (2006.01) F23C 7/00 (2006.01) F23R 3/26 (2006.01)

Patent

CA 2172444

A combustion chamber head assembly consists of an annular, domed combustor head separated on its downstream side from the combustion region by an annular bulkhead. A number of fuel injector means are spaced apart around the head assembly and extend through to supply fuel-air mixture to the combustor region through apertures in the bulkhead. Fuel is supplied by a nozzle at the upstream end of a mixing region. Air is admitted to this region through a variable geometry airflow arrangement comprising several airflow passage disposed concentrically around the nozzle, the passages may include swirl vanes. A portion of the wall surrounding the mixing region is axially translatable to close-off one of the air inlet passages and direct air from the mixing region into the cavity enclosed by the combustor head and bulkhead from where it escapes into the combustion region through air-only apertures in the bulkhead wall.

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