FIELD: power engineering. SUBSTANCE: thermodynamic state of working medium introduced in at least first turbine stage is varied by its expansion and swirling relative to longitudinal axis of gas-turbine engine before its admission to first turbine stage. Working medium, whose thermodynamic state has been changed, is cooled down by working heat of first turbine stage. Gas-turbine engine has at least two turbine stage in flow path and heated working medium source. Engine is provided with ejector that has two inlets and one outlet. First ejector inlet communicates with heated working medium source and its second inlet, with first turbine stage exit; ejector outlet communicates with first turbine stage entrance. EFFECT: facilitated procedure, improved design of gas turbine engine. 9 cl, 5 dwg
