GAS-TURBINE ENGINE Russian patent published in 2003 - IPC

FIELD: aviation industry. SUBSTANCE: invention relates to gas-turbine engines of ground and aircraft application with intershaft radial bearings. In proposed gas-turbine engine including compressor, combustion chamber, high-pressure turbine, low-pressure turbine, intershaft bearing and threaded clamping bushing connecting shafts of compressor and high-pressure turbine, according to invention axial ring spring and splined bushing with side nitrided surface are placed additional between shafts of compressor and high-pressure turbine. Spring is installed between outer race of intershaft bearing and clamping bushing, and splined bushing is in contact through nitrided surface with outer race of bearing and is fixed relative to compressor shaft in circumferential direction. Moreover, axial ring spring has number of radial slots and mating projections on side surfaces, height of projections being 0.06-0.4 mm. EFFECT: improved reliability of structure owing to increased strength and reliability of intershaft bearing by provision of constant axial tightening of its outer race. 2 cl, 4 dwg