FIELD: gas-turbine engines. SUBSTANCE: proposed fuel injector has cylindrical fuel chamber with fuel nozzle connected to it and main and additional gas nozzles directed tangentially through side wall; injector is also provided with outlet nozzle. Additional gas nozzles are made in form of tangential slots directed to the same side as main nozzles. They are located before outlet nozzle. Ratio of diameter of vortex chamber to equivalent diameter of gas nozzle is selected from relationship given in Invention. EFFECT: increased power of acoustic oscillations; possibility of regulation of fuel jet. 3 cl, 3 dwg
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