GAS-TURBINE ENGINE WITH TWO-STAGE GAS TURBINE Russian patent published in 2004 - IPC

FIELD: mechanical engineering; gas-turbine engines. SUBSTANCE: proposed gas-turbine engine with two-stage gas turbine has radial ring projection of shaft with cylindrical bridges installed between mounting flanges of disk hubs of first and second stages. Radial ring projection of shaft is made -like in cross section. Ring cylindrical bridge of radial ring projection encloses mounting flange of second stage disk over its outer surface. Ratio of length to radial thickness of cylindrical bridge of second stage hub mounted flange is 2-5, and ratio of length to radial thickness of cylindrical bridge of -like ring projection of shaft is 3-6, respectively. EFFECT: improved reliability of gas-turbine engine owing to prevention of destruction of disk and shaft fasteners. 2 dwg