A gas turbine engine includes a fan rotatable about an axis, a compressor section, a combustor in fluid communication with the compressor section, and a turbine section in fluid communication with the combustor. The turbine section includes a fan drive turbine and a second turbine. The second turbine is disposed forward of the fan drive turbine. The fan drive turbine includes at least three rotors and at least one rotor having a bore radius (R) and a live rim radius (r), and a ratio of r/R is between about 2.00 and about 2.30. A speed change system is driven by the fan drive turbine for rotating the fan about the axis.
GEARED TURBOFAN GAS TURBINE ENGINE ARCHITECTURE
ARCHITEKTUR FÜR EINEN GASTURBINENMOTOR MIT EINEM GETRIEBETURBOLÜFTER
ARCHITECTURE DE MOTEUR À TURBINE À GAZ À TURBOSOUFFLANTE À ENGRENAGES
2016-07-20
Patent
Elektronische Ressource
Englisch
IPC: | F02K JET-PROPULSION PLANTS , Strahltriebwerke / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES / F02C Gasturbinenanlagen , GAS-TURBINE PLANTS |