Patent ID: 9644541
Date: 2017-05-09
CPC Classifications: F01D,F02C,F05D,F16C,Y02T

Claim:
1. A turbine engine comprising: a shaft; a bearing for rotatably guiding the shaft about an axis of the turbine engine, the bearing comprising a first, radially inner ring and a second, radially outer ring enclosing a rolling member, wherein the first ring is floatingly mounted on the shaft via a fluid damping film so as to damp orientation defects of the shaft during operation thereof; and upstream and downstream sealing segments configured to form a damping chamber which is delimited radially by the first ring and the shaft and longitudinally by the upstream and downstream sealing segments, the damping chamber containing the fluid damping film, wherein the shaft comprises a main annular trough formed radially in an inner surface of the shaft, an auxiliary annular trough formed radially in an inner surface of the main trough, a first hole which connects the auxiliary trough to an outer surface of the shaft, and a second hole which connects the main trough to the outer surface of the shaft, wherein the first ring comprises an upstream annular groove and a downstream annular groove, and wherein the auxiliary annular trough is in fluid communication with the damping chamber via the first hole, and the main annular trough is in fluid communication with one of the upstream and downstream annular grooves via the second hole.