Patent ID: 6814537
Filing Date: 2004-11-09
Classification: F01D,F02C,F05D,F16C

Abstract:
A power turbine assembly comprising:a turbine rotor; a plurality of turbine blades mounted to said rotor and adapted to rotate said rotor in response to a flow of hot gas over said blades; a support structure having a journal bearing and at least one other bearing supporting said rotor for rotation, said journal bearing having a proximal end and a distal end with respect to said turbine blades; and a supply of lubricant communicating with said journal bearing to provide lubricant between said rotor and an inner surface of said journal bearing, said lubricant damping rotational frequencies of said rotor and creating a temperature gradient from greater than about 1000Â° F. at said blades to less than about 350Â° F. at said distal end; wherein the at least one other bearing is a single duplex bearing, the journal bearing and duplex bearing providing the only support for the turbine rotor.