公开(公告)号：US20200300120A1

公开(公告)日：2020-09-24

申请号：US16355972

申请日：2019-03-18

申请人： PRATT & WHITNEY CANADA CORP.

发明人： Thomas VEITCH ,  David BEAMISH ,  Philippe BONNIERE

IPC分类号： F01D25/16 ,  F16F15/023 ,  F01D25/04 ,  F16C27/04

摘要： A multi-film oil damper has an annular damper cavity defined within a housing between a radially outward wall, a first radially extending side wall and a second radially extending side wall. Nested damper rings are disposed within the annular damper cavity for defining squeeze film annuli therebetween. The squeeze film annuli are fluidly connected in parallel to an inlet gallery.

公开(公告)号：US20200284298A1

公开(公告)日：2020-09-10

申请号：US16291384

申请日：2019-03-04

申请人： PRATT & WHITNEY CANADA CORP.

发明人： Thomas VEITCH ,  David BEAMISH ,  Philippe BONNIERE

IPC分类号： F16C32/06 ,  F01D25/16 ,  F16C33/66 ,  F01D25/18

摘要： A multi-film oil damper suited for accommodating radial movement of a rotary shaft bearing relative to a bearing housing, the multi-film oil damper comprising: an annular damper cavity defined within the bearing housing between a radially outward wall and radially extending side walls; an inner damper ring; an outer damper ring disposed between the inner damper ring and the radially outward wall of the annular damper cavity; wherein the annular damper cavity has an oil inlet in communication with a source of pressurized oil; and wherein a radial thickness of the inner damper ring exceeds a radial thickness of the outer damper ring.

公开(公告)号：US20170362954A1

公开(公告)日：2017-12-21

申请号：US15692290

申请日：2017-08-31

申请人： PRATT & WHITNEY CANADA CORP.

发明人： David DENIS ,  Philippe BONNIERE ,  Milica KOJOVIC ,  Oleg KORSHIKOV ,  Lena RAYKOWSKI ,  Czeslaw WOJTYCZKA

IPC分类号： F01D21/04 ,  F16C35/067 ,  F16C19/06 ,  F01D25/16 ,  F16C33/58

CPC分类号： F01D21/045 ,  F01D25/164 ,  F16C19/06 ,  F16C33/586 ,  F16C35/067 ,  F16C2360/23 ,  Y02T50/671

摘要： A bearing arrangement rotatably supports a shaft of an aircraft engine. The bearing arrangement comprises a bearing having rolling elements disposed between inner and outer races. The inner race is affixed to the shaft. A decoupler normally structurally couples the outer race of the bearing to a stator structure of the engine. The decoupler is configured to release the bearing from the stator structure when subject to a predetermined critical load. A bumper is mounted to the stator structure and encircles the bearing. The bumper has a radially inwardly facing surface disposed in close proximity to a radially outer surface of the outer race of the bearing and defines therewith a radial gap to accommodate and constrain an orbiting motion of the rotor about the central axis of the engine after decoupling at the bearing. The bumper further has an axially forwardly facing surface which is axially spaced by a predetermined axial fore gap from a first flange projecting radially outwardly from a front end portion of the outer race of the bearing. The first flange of the outer race is axially trapped between the stator structure and the bumper. After decoupling, the bearing is free to axially and radially move within the radial gap and the axial fore gap.