TURBINE ENGINE, SUMP ASSEMBLY FOR A TURBINEENGINE AND CORRESPONDING METHOD FOR CARRYING A VARYING LOAD THROUGH A DAMPER ASSEMBLY

    公开(公告)号:EP3441575A1

    公开(公告)日:2019-02-13

    申请号:EP17196079.2

    申请日:2017-10-12

    Inventor: TULEJ, Piotr

    Abstract: A turbine engine comprises a frame (102) defining a central aperture (104), a shaft (106) extending in a fore to aft direction through the central aperture, a bearing assembly (114) rotationally supporting the shaft and a spring assembly (150, 160) comprising a first and second set of spring fingers (148, 168) where the second set of spring fingers (168) has an inner ring (144, 164) circumscribing the bearing assembly, and an outer ring (146, 166) mounted to the frame. A set of circumferentially arranged spring fingers (168) having differing stiffness extends between the inner ring and the outer ring. A damper (182) circumscribes the inner ring (164) and separates the inner ring from the frame. A sump assembly (100) for a turbine engine comprises a frame (102), at least one inner race (120), at least one rolling element (132) , at least one outer race (116), and a spring assembly (150, 160) comprising an inner ring (144, 164) circumscribing the inner race, an outer ring (146, 166) mounted to the frame,and a damper. A method for carrying a varying load through a damper assembly comprises introducing flexibility to a load path (R), alternating a load between a damper flexible support (150) and a bearing flexible support (160), and directing at least a portion of the load (R) through a damper (182) when a gap (196) within a bearing assembly (114) becomes closed.

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