AFTERBURNER COMBUSTION CHAMBER OF A DUAL-CIRCUIT TURBOJET ENGINE AND METHOD FOR ITS OPERATION Russian patent published in 2022 - IPC F02K3/10 

FIELD: aircrafts.

SUBSTANCE: invention relates to an afterburner combustion chamber for aircraft bypass gas turbine engines and a method for its operation. The afterburner combustion chamber of a bypass turbojet engine comprises a housing, a mixer made in the form of radial channels of the primary and secondary circuits alternating along the circumference, stabilizers and fuel injectors. The radial channels of the second circuit of the mixer have a rectangular shape in the outlet section, the stabilizers are installed at the outlet of each radial channel of the second circuit of the mixer with the formation in the process of operation of the afterburner between the outlet section of the radial channels of the second circuit and the stabilizer along their sides of flat paired slots of equal width. Stabilizers are made in the form of plates or isosceles corner elements and are mounted on the housing with the possibility of rotation and fixation in such a way that the longitudinal symmetry axes of the outlet section of the radial channel of the second circuit and the corresponding stabilizer lie in the same plane. The method for operation includes supplying the flow of the first circuit and the flow of the second circuit into the corresponding radial channels of the mixer alternating along the circumference, supplying fuel and organizing the combustion process in the mixing zone of the flows of the first and second circuits, stabilizing the combustion and fuel supply processes. Stabilization of the combustion and fuel supply processes is carried out by dividing the flow at the outlet of each radial channel of the second circuit of the mixer into paired flat jets directed across the flow of the first circuit and opposite to each other with the formation of a circulation zone behind the stabilizer, fuel is supplied directly to paired flat jets or into circulation areas.

EFFECT: invention makes it possible to reduce total pressure losses and afterburner weight.

6 cl, 5 dwg