BIROTATING BYPASS GAS TURBINE ENGINE Russian patent published in 2023 - IPC F02K3/65 F02C3/73 

FIELD: aviation.

SUBSTANCE: invention is related to drives for aviation, specifically to bypass gas turbine engines. A two-circuit birotative gas turbine engine is proposed, containing a non-rotating combustion chamber, a jet nozzle and a birotative turbine with a birotative compressor. The birotative compressor is made inside a birotative turbine; a fairing is installed concentrically with the outer rotor of the turbine, inside of which at least one working part of the propfan is installed with the guide part of the propfan behind it. The non-rotating combustion chamber is made cylindrical at the junction of the birotation compressor with the birotation turbine with the ability to rotate the air flow from the birotation compressor by 180°. The outlet from the birotation turbine is connected by turning the flow of combustion products by 180° with a central cylindrical channel inside the bi-rotative compressor and with a jet nozzle at the outlet of the engine. All connections of the stators and rotors of the birotating compressor and birotating turbine to each other and to the combustion chamber are protected by connection protection units. The internal shaft of a birotative compressor can be connected to the first working part of a propfan. The external shaft of the birotation turbine can be connected to the second working part of the propfan. A birotative gas turbine engine may include front, middle and rear bearings. The front bearing can be installed under the first guide part of the propfan, the middle bearing under the second guide part of the propfan, and the rear bearing at the outlet of the internal rotor of the birotative compressor. Connection protection units can be equipped with seals, plain bearings and thrust bearings. The jet nozzle can be configured to rotate from the internal rotor of the birotative compressor.

EFFECT: increased efficiency of the compressor and turbine and simplified design.

7 cl, 11 dwg