公开(公告)号：US20210332754A1

公开(公告)日：2021-10-28

申请号：US17220332

申请日：2021-04-01

Applicant: ROLLS-ROYCE plc

Inventor： Neil J. DAVIES

IPC: F02C7/06 ,  F01D25/20

Abstract: A system for supplying lubricant to a component of a gas turbine engine is provided. The system includes a first fluid circuit having a first pump drivably couplable to a fan shaft of the engine for pumping a lubricant from a lubricant tank to the component. The first fluid circuit allows only a unidirectional flow of the lubricant from the lubricant tank to the component via the first pump. The system also includes a second fluid circuit having a second pump drivably couplable to the fan shaft for pumping the lubricant from the component to the lubricant tank. The second fluid circuit allows only a unidirectional flow of the lubricant from the component to the lubricant tank via the second pump. First and second ports of the two pumps operate as input ports or output ports depending on the rotation direction of the fan shaft.

公开(公告)号：US20210246811A1

公开(公告)日：2021-08-12

申请号：US17169624

申请日：2021-02-08

Applicant: ROLLS-ROYCE plc

Inventor： Alan R. MAGUIRE ,  Richard SHARPE ,  Neil J. DAVIES

IPC: F01D25/20 ,  F01M1/02

Abstract: A system for supplying lubricant to a component of a gas turbine engine having a fan shaft is provided. The system includes a pump drivably couplable to the fan shaft for pumping lubricant to the component. The pump includes an inlet for receiving lubricant from a lubricant source, an outlet for outputting lubricant to the component and a swashplate movable between at least a first position and a second position. The system also includes a swashplate actuator for actuating the swashplate between the first position and the second position according to whether the fan shaft is rotating in a forward direction or a reverse direction opposite to the forward direction.

公开(公告)号：US20200049071A1

公开(公告)日：2020-02-13

申请号：US16529126

申请日：2019-08-01

Applicant: ROLLS-ROYCE plc

Inventor： Edward John HEENEN ,  Michael J. SHEATH ,  Neil J. DAVIES

IPC: F02C7/14 ,  H01L35/00

Abstract: Apparatus for a gas turbine engine, the apparatus comprising: an engine core; a nacelle; and thermal energy transfer apparatus configured to transfer thermal energy from the engine core to the nacelle.

公开(公告)号：US20190316672A1

公开(公告)日：2019-10-17

申请号：US16372972

申请日：2019-04-02

Applicant: ROLLS-ROYCE plc

Inventor： Neil J. DAVIES

IPC: F16H57/04 ,  F01M1/02 ,  F16N7/16 ,  F16N7/40 ,  F16N29/02 ,  F02K3/06 ,  F01D25/20 ,  F02C7/36

Abstract: A lubrication system for a gas turbine engine, the system comprising: a gearbox, the gearbox comprising a sump; an oil tank; a primary gearbox lubrication system configured to pump oil from the oil tank to lubricate the gearbox with a gearbox primary feed; a secondary gearbox lubrication system, configured to lubricate the gearbox with oil from the sump when the oil level in the sump reaches a predetermined level; wherein the system is configured to increase the oil level in the sump to at least the predetermined level in response to a failure of the primary gearbox lubrication system.