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    Bearing structure
    12.
    发明授权
    Bearing structure 有权
    轴承结构

    公开(公告)号：US09447817B2

    公开(公告)日：2016-09-20

    申请号：US14961027

    申请日：2015-12-07

    Applicant: ROLLS-ROYCE plc

    Inventor： Stephen Gallimore ,  Paul Fletcher

    IPC: F16C27/00 ,  F16C19/54 ,  F16C19/52 ,  F16C19/06 ,  F16C35/04 ,  F16C33/78 ,  F01D25/16

    CPC classification number: F16C19/54 ,  F01D25/16 ,  F01D25/164 ,  F02C7/06 ,  F05D2220/32 ,  F05D2240/54 ,  F05D2260/15 ,  F16C19/06 ,  F16C19/16 ,  F16C19/522 ,  F16C25/08 ,  F16C33/7816 ,  F16C35/042 ,  F16C41/02 ,  F16C2360/23

    Abstract: Bearing structure including a first bearing, surrounded by a housing, having a first inner and outer race and first set of rolling elements between the inner and outer races and a second bearing having a second inner and outer race and second set of rolling elements between the second inner and outer races. A first compliant element is connected to the first outer race. A rigid diaphragm is connected to the first outer race between the compliant element and outer race, and is connected to the housing at its outer end. The first compliant element, outer race and rigid diaphragm at least partly define a pressure chamber. The first outer race is axially slidable relative to the second such that a pressure increase in the chamber changes the axial spacing between the first and second outer races, inducing additional axial load on the bearings which helps balance thrust load sharing.

    Abstract translation: 轴承结构包括由壳体包围的第一轴承，具有第一内圈和外座圈以及在第一和第二座圈之间的第一组滚动元件，以及第二轴承，其具有第二内外圈和第二组滚动元件 第二次内外赛。 第一顺应元件连接到第一外圈。 刚性膜片在顺应元件和外座圈之间连接到第一外圈，并且在其外端处连接到壳体。 第一顺应元件，外圈和刚性隔膜至少部分地限定压力室。 第一外圈相对于第二外圈可轴向滑动，使得腔室中的压力增加改变了第一和第二外圈之间的轴向间隔，从而在轴承上引起额外的轴向载荷，这有助于平衡推力负载共享。

    Duct arrangement
    13.
    发明授权
    Duct arrangement 有权
    管道安排

    公开(公告)号：US09127784B2

    公开(公告)日：2015-09-08

    申请号：US14087623

    申请日：2013-11-22

    Applicant: ROLLS-ROYCE PLC

    Inventor： John Richard Webster ,  Paul John Newton ,  Paul Fletcher

    IPC: B63H11/103 ,  F16L9/00 ,  B63H11/00 ,  B63H11/04

    CPC classification number: F16L9/00 ,  B63H11/00 ,  B63H11/04 ,  B63H11/103 ,  B63H2011/004 ,  B63H2011/043

    Abstract: A duct arrangement 18 for a waterjet propulsor 10. The duct arrangement 18 comprises a main duct 30 having an inlet 20. The inlet 20 has an elongate main portion 32 extending along a principal axis 34, and at least one lateral portion 36 in fluid communication with the main portion 34. The at least one lateral portion 36 extends part way only along the length of the main portion 34.

    Abstract translation: 用于水射流推进器10的管道装置18.管道装置18包括具有入口20的主管道30.入口20具有沿主轴线34延伸的细长主体部分32和与流体连通的至少一个横向部分36 主体部分34.至少一个横向部分36仅沿主体部分34的长度部分地延伸。

    Aircraft electrically-assisted propulsion control system
    14.
    发明授权
    Aircraft electrically-assisted propulsion control system 有权

    公开(公告)号：US11260983B2

    公开(公告)日：2022-03-01

    申请号：US16552433

    申请日：2019-08-27

    Applicant: Rolls-Royce plc

    Inventor： Peter Swann ,  Paul Fletcher ,  Alvise Pellegrini ,  Ashog Kulathasan

    IPC: B64D27/24 ,  B64D31/06 ,  F02C9/48 ,  F02C9/54 ,  F02K5/00 ,  B64D27/02 ,  B64D41/00

    Abstract: This invention concerns an aircraft propulsion system in which an engine has an engine core comprising a compressor, a combustor and a turbine driven by a flow of combustion products of the combustor. At least one propulsive fan generates a mass flow of air to propel the aircraft. An electrical energy store is provided on board the aircraft. At least one electric motor is arranged to drive the propulsive fan and the engine core compressor. A controller controls the at least one electric motor to mitigate the creation of a contrail caused by the engine combustion products by altering the ratio of the mass flow of air by the propulsive fan to the flow of combustion products of the combustor. The at least one electric motor is controlled so as to selectively drive both the propulsive fan and engine core compressor.

    Aircraft electrically-assisted propulsion control system
    16.
    发明授权
    Aircraft electrically-assisted propulsion control system 有权

    公开(公告)号：US10435165B2

    公开(公告)日：2019-10-08

    申请号：US15846994

    申请日：2017-12-19

    Applicant: ROLLS-ROYCE plc

    Inventor： Peter Swann ,  Paul Fletcher ,  Alvise Pellegrini ,  Ashog Kulathasan

    IPC: B64D27/24 ,  B64D31/06 ,  F02C9/48 ,  F02K5/00 ,  F02C9/54 ,  B64D27/02 ,  B64D41/00

    Abstract: This invention concerns an aircraft propulsion system in which an engine has an engine core comprising a compressor, a combustor and a turbine driven by a flow of combustion products of the combustor. At least one propulsive fan generates a mass flow of air to propel the aircraft. An electrical energy store is provided on board the aircraft. At least one electric motor is arranged to drive the propulsive fan and the engine core compressor. A controller controls the at least one electric motor to mitigate the creation of a contrail caused by the engine combustion products by altering the ratio of the mass flow of air by the propulsive fan to the flow of combustion products of the combustor. The at least one electric motor is controlled so as to selectively drive both the propulsive fan and engine core compressor.

    Bearing arrangements
    18.
    发明授权
    Bearing arrangements 有权

    公开(公告)号：US10174788B2

    公开(公告)日：2019-01-08

    申请号：US15408180

    申请日：2017-01-17

    Applicant: ROLLS-ROYCE plc

    Inventor： Paul Fletcher ,  Paul Wilson

    IPC: F16C19/54 ,  F16C25/06 ,  F16C32/04 ,  F16C41/00 ,  F16C19/52 ,  F16C25/08

    Abstract: A bearing arrangement comprising: a first bearing including a first inner race coupled to a rotatable component, a first outer race; and a plurality of first roller elements between the first inner race and the first outer race; a second bearing including a second inner race coupled to the rotatable component, a second outer race, and a plurality of second roller elements between the second inner race and the second outer race; a component, the first outer race being axially moveable relative to the component; and a member between the first bearing and the second bearing and arranged to provide an indirect first force on the first outer race to prevent the first roller elements from skidding when the first bearing and the second bearing receive a second force in a first direction, the second bearing being configured to transfer the second force to the component.

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