公开(公告)号：US20210172379A1

公开(公告)日：2021-06-10

申请号：US16820963

申请日：2020-03-17

Applicant: ROLLS-ROYCE plc

Inventor： Mark SPRUCE

IPC: F02C7/36 ,  F16H1/28 ,  F16H57/08

Abstract: An engine core including a turbine, compressor, and a core shaft connecting the turbine and compressor; a fan located upstream of the engine core including a plurality of fan blades; and a gearbox. The gearbox is arranged to receive an input from the core shaft and to output drive to the fan to drive the fan at a lower rotational speed than the core shaft. The gearbox is an epicyclic gearbox and includes a sun gear, a plurality of planet gears, ring gear, and planet carrier to the mounted planet gears. The planet carrier has an effective linear torsional stiffness and the gearbox has a gear mesh stiffness between the planet gears and the ring gear. A carrier to ring mesh ratio of: the   effective   linear   torsional   stiffness   of   the   planet   carrier gear   mesh   stiffness   between   the   planet   gears   and   the   ring   gear is greater than or equal to 0.2.

公开(公告)号：US11028782B2

公开(公告)日：2021-06-08

申请号：US16124559

申请日：2018-09-07

Applicant: ROLLS-ROYCE plc

Inventor： Simon M. Ruston ,  Rong Yang ,  Matthew Fox ,  Aniket Anand Kulkarni

IPC: F01D25/24 ,  F02C9/18 ,  B64D29/08 ,  F02K3/06 ,  F02K3/075

Abstract: A pressure relief arrangement for a gas turbine engine comprises a hinged door and a mount. A plastically deformable member is provided between and coupled to the hinged door and the mount. The deformable member is configured to deform between a non-deformed state when the door is in a closed position and an elongated deformed state when the door is in an open position.

公开(公告)号：US20210164402A1

公开(公告)日：2021-06-03

申请号：US17101932

申请日：2020-11-23

Applicant: ROLLS-ROYCE plc

Inventor： Vasileios Pachidis ,  Luis E Ferrer-Vidal Espana-Heredia

IPC: F02C9/16

Abstract: A method of determining performance characteristics of a flow machine having a rotor interacting with a flow field. The method comprises: receiving performance data for the flow machine comprising data values of a performance parameter of the rotor and mass flow for the flow machine at one or more defined rotor condition, the performance data defining a two-dimensional array of data in which points for a common rotor condition are identifiable; determining or receiving exit mass flow values for the flow downstream of the rotor; and identifying one or more point in the received performance data and interpolating from said one or more point to a corresponding one or more point at a different rotor condition based on a correlation of the exit mass flow values for said points.

公开(公告)号：US20210162683A1

公开(公告)日：2021-06-03

申请号：US17021415

申请日：2020-09-15

Applicant: ROLLS-ROYCE plc

Inventor： Robert C. BACKHOUSE ,  Christopher D. Jones

IPC: B29C70/46 ,  B29C43/10

Abstract: Tool arrangement for compacting a composite preform assembly comprising a support structure preform and an array of component preforms each extending from the support structure preform and spaced apart along the support structure preform. The tool arrangement comprises a support tool defining a lay-up surface for laying up the support structure preform; a plurality of component moulds, each component mould comprising a pair of blocks configured to cooperate with one another to receive and compact a respective component preform extending from the support structure therebetween, each block having a compaction surface for engaging the component preform and a driving surface.

公开(公告)号：US20210156281A1

公开(公告)日：2021-05-27

申请号：US17078805

申请日：2020-10-23

Applicant: ROLLS-ROYCE PLC

Inventor： Ahmed MY RAZAK

IPC: F01D25/30 ,  F01D15/10

Abstract: A carbon capture system comprising a gas turbine with a heat exchanger operable to heat a working fluid in the gas turbine, a source of high temperature exhaust gas operable to supply heat to the gas turbine through heat exchanger to heat the working fluid wherein the source of high temperature exhaust gas is operable to provide exhaust gas at a high pressure which is greater than the vapor to liquid transition pressure of CO2 at the temperature of a coolant.

公开(公告)号：US11015528B2

公开(公告)日：2021-05-25

申请号：US16357904

申请日：2019-03-19

Applicant: ROLLS-ROYCE plc

Inventor： David A. Edwards

IPC: F02C7/06 ,  F02C3/06 ,  F02C7/12 ,  F01D25/18 ,  F02C7/32 ,  F16N17/02 ,  F02C7/36 ,  F16N7/40 ,  F16N7/38 ,  F02K3/06 ,  F01D9/06 ,  F01M11/00

Abstract: A tank assembly (100) for a gas turbine engine is provided comprising a tank (102) and a plurality of restraints (112, 114). The restraints (112, 114) include a fixing part (124) for securing the tank (102) to a support structure (104). A first restraint (112) has a first rigidity in the direction of a length of the tank (102) and at least one second restraint (114) has a second rigidity in the direction of the length of the tank (102). Upon thermal expansion or contraction of the tank (102) relative to the support structure (104), the or each second restraint (114) flexes to a greater extent than the first restraint (112).

公开(公告)号：US11007571B2

公开(公告)日：2021-05-18

申请号：US16271039

申请日：2019-02-08

Applicant: ROLLS-ROYCE plc

Inventor： David A. Stewart

IPC: B22F3/15 ,  C22C38/00 ,  C22C1/04 ,  C22C33/02 ,  C22C38/34 ,  C22C38/58 ,  C22C38/40 ,  C22C38/56 ,  C22C38/02

Abstract: A method of manufacturing an austenitic iron alloy comprising placing austenitic iron alloy powder in a can, evacuating air and other gases from the can, supplying nitrogen gas into the can, sealing the can and then hot isostatically pressing the austenitic iron alloy powder in the can to diffuse the nitrogen into the austenitic iron alloy powder and to produce a nitrogen enriched austenitic iron alloy bar and removing the can from the nitrogen enriched austenitic iron alloy bar.

公开(公告)号：US20210138643A1

公开(公告)日：2021-05-13

申请号：US17089238

申请日：2020-11-04

Applicant: ROLLS-ROYCE plc

Inventor： Arthur Wee ,  Muhammad Izzat Bin Roslan ,  Domenico Campolo ,  Menoth Mohan Dhanya ,  Gia Hoang Phan ,  Sreekanth Kana

IPC: B25J9/16 ,  B25J11/00

Abstract: Disclosed herein is an impedance control system for a robot arm. The system is able to provide at least two different levels of stiffness/compliance, and values for stiffness/compliance in the can be independently defined and set in at least first and second directions. Specifically, this allows the stiffness in said first direction to be set at a lower value than the stiffness in said second direction within the control system.

公开(公告)号：US10989112B2

公开(公告)日：2021-04-27

申请号：US16411341

申请日：2019-05-14

Applicant: ROLLS-ROYCE plc

Inventor： Pascal Dunning ,  Roderick M Townes ,  Michael J Whittle

IPC: F02C3/073 ,  F02C7/36 ,  F01D5/28 ,  F01D5/30

Abstract: A highly efficient gas turbine engine is provided. The fan of the gas turbine engine is driven from a turbine via a gearbox, such that the fan has a lower rotational speed than the driving turbine, thereby providing efficiency gains. The efficient fan system is mated to a core that has low cooling flow requirements and/or high temperature capability, and which may have particularly low mass for a given power.

公开(公告)号：US10988035B2

公开(公告)日：2021-04-27

申请号：US16600196

申请日：2019-10-11

Applicant: Rolls-Royce Corporation ,  Rolls-Royce North American Technologies, Inc. ,  Rolls-Royce PLC

Inventor： Michael James Armstrong ,  Mark Jon Blackwelder ,  David John Howard Eames ,  Ellis Fui Hen Chong

IPC: B60L50/10 ,  B64D31/06 ,  H02P5/74

Abstract: An alternating current type electric propulsion system is described that includes an AC generator and a plurality of propulsors electrically coupled to the AC generator. A first propulsor from the plurality of propulsors includes a first motor that drives a first fan of the first propulsor at a first speed. A second propulsor from the plurality of propulsors comprises a second motor that drives a second fan of the second propulsor at a second speed that is different than the first speed.