FIELD: engine devices and pumps.
SUBSTANCE: gas turbine engine comprises a very high-speed low-pressure turbine, wherein the ratio of the parameter which is determined by product of outlet section area of the low-pressure turbine by square of rotation speed of the low-pressure turbine, the same parameter of the high-pressure turbine is about 0.5 to about 1.5.
EFFECT: improvement of performance characteristics of the gas turbine engines, including increase of engine efficiency, and reduction of turbine section dimensions without degrading its efficiency.
20 cl, 2 dwg
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