FIELD: mechanical engineering; gas turbine engines. SUBSTANCE: fuel nozzle with tangential air inlet is provided with inlet hole of combustion chamber to let air and fuel into combustion chamber. Hole is limited by convergent surface, combustion chamber surface and cylindrical surface passing between them. Convergent surface passes to first distance along longitudinal axis of nozzle, cylindrical surface passes to second distance along axis, second distance being equal to 30% of first distance, minimum. EFFECT: reduced emission of NOx, increased service life owing to prevention of contact of flame with central part of nozzle. 3 cl, 3 dwg
