Derby, United Kingdom
Derby, United Kingdom

Rolls-Royce Holdings plc is a British multinational public holding company that through its subsidiaries, designs, manufactures and distributes power systems. Rolls-Royce Holdings is headquartered in City of Westminster, London. It is the world’s second-largest maker of aircraft engines, and also has major businesses in the marine propulsion and energy sectors. Rolls-Royce was the world's 16th-largest defence contractor in 2011 and 2012 when measured by defence revenues. It had an announced order book of £71.6 billion as of January 2014.Rolls-Royce is listed on the London Stock Exchange and is a constituent of the FTSE 100 Index. As of June 2013, it had a market capitalisation of £22.22 billion, the 24th-largest of any company with a primary listing on the London Stock Exchange. Wikipedia.


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Patent
Rolls-Royce | Date: 2017-05-17

A method for welding together pieces which form a curved or angled end product using a friction welding process is described. The method comprises; providing first and second pieces which together define the end product geometry, each piece comprising an end product geometry portion and a sacrificial weld portion, the sacrificial weld portion forming a dog-leg relative to the end product geometry portion and terminating in a planar weld interface surface. The pieces are arranged with their planar weld interface surfaces together at a weld surface interface and the sacrificial weld portions in coaxial alignment. Mechanical friction is applied between the planar weld interface surfaces sufficient to plasticly deform the sacrificial weld portions. An axial force is applied along the co-axis of the sacrificial weld portions sufficient to upset the sacrificial weld portions and bring together the end product geometry portions. The sacrificial geometry portions are removed to provide the end product.


Patent
Rolls-Royce | Date: 2017-05-17

A shrouded turbine blade comprising a blade body (21) having an operationally upstream face, an operationally downstream face, a root end and a tip end and a shroud segment provided at the tip end, the blade having an inlet in the root end and a cooling passage (26) passing from the inlet to the tip end, the shroud segment comprising an arcuate platform (22) and a seal fin (25) arranged towards an operationally upstream end of the shroud platform (22) and extending away from the blade body (21) and circumferentially across the shroud platform (22), a fin cooling passage (27,23) in fluid communication with the tip end of the blade cooling passage (26), the fin cooling passage (27,23) having at least one outlet (20) on an operationally downstream facing side of the fin (25), and a flow discourager (24) arranged towards an operationally downstream end of the shroud platform (22).


A protective assembly engaging in case of tensile failure comprising an elongate tubular member, and a catcher rod. The tubular member has a first end portion and an opposite second end portion, and a fuse portion is positioned between the first end portion and the second end portion. A cross-sectional area of the tubular member is reduced at the fuse portion. The catcher rod has a first end portion and an opposite second end portion, with the catcher rod being accommodated concentrically within the tubular member. The second end portion of the catcher rod is secured to the second end portion of the tubular member The first end portion of the tubular member is provided with a first divergent conical portion, and the first end portion of the catcher rod is provided with a second divergent conical portion. In the event of breakage of the tubular member, the second divergent conical portion impinges against the first divergent conical portion to limit the axial movement of the tubular member.


Patent
Rolls-Royce | Date: 2017-05-17

A multistage compressor (14) for a gas turbine engine (10), the compressor (14) comprising a plurality of compressor stages (32), each compressor stage (32) comprising in axial flow series a row of rotor blades (24) and a row of stator vanes (30). A radially inner end of the rotor blades (24) are connected to a hub (26). A casing (28) circumscribes the rotor blades (24) and the stator vanes (30). The rotor blades (24) and the stator vanes (30) each have an aerofoil portion (34). Each of the aerofoil portions (34) of the rotor blades (24) and/or the stator vanes (30) of one or more stages of the compressor (14) are profiled in a spanwise direction such that the aerofoil portion (34) has a trailing edge (42) that is angled more towards the axial direction in a region proximal to the casing (28) and hub (26) than in a mid-region.


The invention is related to a method for automatic data processing in engine systems maintenance, in particular aircraft engine maintenance, comprisinga) scanning engine component information (I) from an information carrier (2) coupled to an engine component (1) with an image scanner device (11) of a mobile device (10), in particular a smartphone (10) or a tablet computer (10),b) processing the engine component information (I) in a computer system (20) connected at least intermittently with the mobile device (10) and / or in a computer system (20) integrated with the mobile device (10),c) automatically generating at least one event (E) in dependence of the engine component information (I), in particular at least one order event for the engine component (1) andd) the computer system (20) automatically sending at least one an information token (T) to the mobile device (10) in dependence of the generation of the at least one event (E), in particular at least one confirmation token (T) of the at least one order event (E).It is also related to a system.


Patent
Rolls-Royce | Date: 2017-04-12

[0066]Various aspects provide for parking an apparatus in a parking configuration. A parking configuration may be a configuration of an apparatus that minimizes damage (e.g., corrosion, wear, and the like) resulting from extended exposure during periods of inactivity. An apparatus may comprise a propulsion system (e.g., for a ship) and/or a steering system. An apparatus may comprise a linkage or other device positioned by an actuator. Some aspects include a water-jet based propulsion system having a scoop and a nozzle operable to redirect the water jet, providing a range of forward/backward and port/starboard thrusts.


A friction welding apparatus (30) comprising a first clamp (36) for holding a first part (32) to be welded by rotary friction welding, a second clamp (42) for holding a second part (34) to be welded by rotary friction welding, a device for producing relative rotation (40) between the first clamp (36) and the second clamp (42) and a forge (44) for applying an axial forging pressure to the parts (32, 34) to be welded when the parts (32, 34) are located in the clamps (36, 42). The second clamp (42) being mounted on a first half of a coupling (68). A second half of the coupling (72) is movable axially between a first position and a second position. In the first position the second half of the coupling (72) is engaged with the first half of the coupling (68) to prevent rotation of the second clamp (42) and enable relative rotation between the first clamp (36) and the second clamp (42). In the second position the second half of the coupling (72) is disengaged from the first half of the coupling (68) to enable rotation of the second clamp (42) and stop relative rotation between the first clamp (36) and the second clamp (42).


Patent
Rolls-Royce | Date: 2017-05-31

A turbine shroud adapted for use in a gas turbine engine includes a plurality of metallic carrier segments and a plurality of blade track segments mounted to corresponding metallic carrier segments. Impingement tubes direct cooling air onto the blade track segments to cool the blade track segments when exposed to high temperatures in a gas turbine engine.


Patent
Rolls-Royce | Date: 2017-04-12

Various aspects provide for parking an apparatus in a parking position. A parking position may be a configuration of an apparatus that minimizes damage resulting from extended exposure during periods of inactivity. An apparatus may comprise a marine apparatus, which may be configured to be disposed in an environment comprising saltwater, salty air, brackish water, freshwater, and the like. An apparatus may comprise a propulsion system (e.g., for a ship) and/or a steering system. Some aspects include a water-jet based propulsion system having a scoop and a nozzle operable to redirect the water jet, providing a range of forward/backward and port/starboard thrusts. A control cylinder and/or a linkage may be parked in a configuration that segregates damage incurred during periods of inactivity to portions of an apparatus not needed for normal operation.


Patent
Rolls-Royce | Date: 2017-04-12

The invention relates to a system and method for cooling of a pod propulsion device, including a motor casing (3) and a strut (2), which strut (2) is connected at a lower part thereof to the motor casing (3) and is arranged to be connected at an upper part thereof to a hull (1) of a ship, said motor casing (3) including a housing (6) enclosing an electric motor (5) with a stator (51) and a rotor, wherein periodically a forced cooling air flow (W,S) is shifted to use a front duct (2A) as supply (S) for limited time period TF and thereafter shift to use the aft duct (2B) as supply (S) for a limited time period TA. The invention also relates to a ship provided with such a system and method for cooling of pod propulsion device.

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