FIELD: combustion chambers of gas-turbine engines. SUBSTANCE: tangential-feed fuel injector whereto fuel is supplied upon mixing it up with air has pair of cylindrical sections whose edges form pair of outlet slits for tangential feed of primary air to mixing chamber confined by cylindrical sections and butt-end plates spatially sectionalized in longitudinal direction. Set of fuel-dispensing passages is disposed lengthwise of outlet slits. This set is configured so that nonuniform fuel injection is ensured over length of outlet slits and fuel ingress in slowly flowing boundary layer communicating with central insert, as measured in fractions of inlet slit width, can be controlled. Injector also has central flameout insert with its butt end made in the form of blunted tip whose position is coordinated with that of outlet surface of injector, as well as fuel feed pipe passed through insert and used to supply secondary combustible fluid medium, preferably gaseous fuel, through spray nozzles in blunted tip. Central nozzle functions to keep flame away from mixing chamber and reliably ejects any flame that has been sucked in already. Blunted form of insert along with its edge coordinated with outlet surface of injector enable flame forcing at insert edge so that fuel combustion takes place downstream of outlet surface thereby reducing probability of damage to cylindrical sections of insert. Injection of fuel or fuel-air mixture through nozzles in blunted tip contributes to flame retaining on tip thereby spatially stabilizing it which also reduces acoustic vibrations. Nonuniform fuel injection lengthwise of inlet slit compensates for any irregularities caused by insert thereby enhancing flame stability. Proposed injector and process thereof prevent production of nitric oxides. EFFECT: enhanced environmental friendliness and extended service life of injector and of combustion chamber. 37 cl, 4 dwg
