FIELD: power engineering. SUBSTANCE: flow of oxygen is fed from oxygen source 3 to source 1 of heated fluid and flow of heated fluid is swirled with respect to longitudinal axis of the gas-turbine engine upstream of input of the first stage of the turbine. Many streams of auxiliary fluid, which are swirled with respect to the longitudinal axis of the gas-turbine engine, are fed under pressure, which exceeds oxygen pressure, in oxygen flow at inlet 4 in source 1 of heated fluid. Flow rate of heated fluid increases at the outlet of source 1 of heated fluid. Flow rate between inlet 4 of source 1 of heated fluid and heating zone decreases. The gas-turbine engine has at least two turbine stages 6,8,9, received in the flowing section, source 1 of heated fluid, source 3 of oxygen and source 11 of fuel. The engine has a unit for supplying many streams of auxiliary fluid, which are swirled with respect to longitudinal axis of gas-turbine engine, to inlet of source 1 of heated fluid. EFFECT: simplified method. 12 cl, 6 dwg
