PROPFAN AIRCRAFT GAS TURBINE ENGINE Russian patent published in 2024 - IPC F02C7/36 F02K3/72 

FIELD: aviation.

SUBSTANCE: invention relates to propfan aircraft engines. Propfan aircraft gas turbine engine of three-shaft circuit comprises a turbocharger with two compressor cascades, a combustion chamber, three turbine cascades and two propfan stages, the latter are arranged at engine front on output shafts in both circuits and coupled with turbines by two magnetic couplings with drive and driven half-couplings. Driving half-couplings of the magnetic couplings are connected to the front part of the third shaft and the front part of the second shaft, which is the shaft of the turbocompressor. First and second output shafts are connected to the driven half-couplings of the magnetic couplings, on which the stages of the propeller fan are installed, wherein said magnetic couplings comprise drive and driven half-couplings in the form of annular discs with radially mounted magnets and with opposite magnetic polarity.

EFFECT: use of the invention allows increasing efficiency, improving reliability, and facilitating start-up.

4 cl, 4 dwg