Patents by Inventor Huw L Edwards
Huw L Edwards has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10348140Abstract: Apparatus to control transmission of data, the apparatus comprising: a controller configured to: receive data from at least a first sensor within an azimuth thruster; control storage of the received data in memory; determine whether at least one criterion is satisfied, the at least one criterion varying with the relative positioning of a first antenna mounted on a lower housing of the azimuth thruster and a second antenna mounted on an upper housing of the azimuth thruster, the lower housing being configured to rotate relative to the upper housing; and control transmission of the stored data from the first antenna in response to determining that the at least one criterion is satisfied.Type: GrantFiled: July 5, 2016Date of Patent: July 9, 2019Assignee: ROLLS-ROYCE plcInventors: Huw L Edwards, Vishal K. Dhutia, Faidon Mitzalis, Edoardo G Frau, Mathias H Broman, Werner P Schiffers
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Patent number: 10131441Abstract: An electrical network for an aircraft. The aircraft includes at least one variable pitch propulsor. The electrical network includes a wound field synchronous AC electrical generator having a wound rotor driven by an internal combustion engine. The network further includes a voltage regulator configured to regulate output voltage of the electrical generator by regulating rotor winding magnetic field strength, and a synchronous AC drive motor coupled to a respective variable pitch propulsor and provided with power from the output of the electrical generator.Type: GrantFiled: April 22, 2016Date of Patent: November 20, 2018Assignee: ROLLS-ROYCE PLCInventors: Huw L. Edwards, Alexander C Smith, Judith M. Apsley, Charalampos Manolopoulos
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Patent number: 10050651Abstract: A marine propulsor comprises: a stationary part and a movable part which is movable relative to the stationary part; and a wireless communication system, comprising at least one transmitter which is disposed in the movable part and is configured to transmit an electromagnetic data signal and at least one receiver which is disposed in the stationary part and is configured to receive the electromagnetic data signal. The wireless communication system includes a diversity scheme for mitigating multipath distortion of the electromagnetic data signal between the at least one transmitter and the at least one receiver.Type: GrantFiled: June 4, 2015Date of Patent: August 14, 2018Assignee: ROLLS-ROYCE plcInventors: Huw L. Edwards, Max C Y Ong, Haydn A. Thompson
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Patent number: 9905124Abstract: There is provided a wireless communication system for a marine propulsor, comprising: a transmitter; a receiver; and a waveguide, arranged to convey an electromagnetic data signal between the transmitter and the receiver; wherein the waveguide comprises an electrically non-conductive solid or liquid medium for propagating the electromagnetic data signal.Type: GrantFiled: June 4, 2015Date of Patent: February 27, 2018Assignee: ROLLS-ROYCE plcInventors: Huw L Edwards, Max C Y Ong, Haydn A Thompson, Graham Watson
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Publication number: 20170033617Abstract: Apparatus to control transmission of data, the apparatus comprising: a controller configured to: receive data from at least a first sensor within an azimuth thruster; control storage of the received data in memory; determine whether at least one criterion is satisfied, the at least one criterion varying with the relative positioning of a first antenna mounted on a lower housing of the azimuth thruster and a second antenna mounted on an upper housing of the azimuth thruster, the lower housing being configured to rotate relative to the upper housing; and control transmission of the stored data from the first antenna in response to determining that the at least one criterion is satisfied.Type: ApplicationFiled: July 5, 2016Publication date: February 2, 2017Applicant: ROLLS-ROYCE plcInventors: Huw L. EDWARDS, Vishal K. DHUTIA, Faidon MITZALIS, Edoardo G. FRAU, Mathias H. BROMAN, Werner P. SCHIFFERS
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Publication number: 20160340051Abstract: An electrical network for an aircraft. The aircraft includes at least one variable pitch propulsor. The electrical network includes a wound field synchronous AC electrical generator having a wound rotor driven by an internal combustion engine. The network further includes a voltage regulator configured to regulate output voltage of the electrical generator by regulating rotor winding magnetic field strength, and a synchronous AC drive motor coupled to a respective variable pitch propulsor and provided with power from the output of the electrical generator.Type: ApplicationFiled: April 22, 2016Publication date: November 24, 2016Applicant: ROLLS-ROYCE PLCInventors: Huw L. EDWARDS, Alexander C. SMITH, Judith M. APSLEY, Charalampos MANOLOPOULOS
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Publication number: 20150381224Abstract: A marine propulsor comprises: a stationary part and a movable part which is movable relative to the stationary part; and a wireless communication system, comprising at least one transmitter which is disposed in the movable part and is configured to transmit an electromagnetic data signal and at least one receiver which is disposed in the stationary part and is configured to receive the electromagnetic data signal. The wireless communication system includes a diversity scheme for mitigating multipath distortion of the electromagnetic data signal between the at least one transmitter and the at least one receiver.Type: ApplicationFiled: June 4, 2015Publication date: December 31, 2015Inventors: Huw L. EDWARDS, Max C Y ONG, Haydn A. THOMPSON
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Publication number: 20150379867Abstract: There is provided a wireless communication system for a marine propulsor, comprising: a transmitter; a receiver; and a waveguide, arranged to convey an electromagnetic data signal between the transmitter and the receiver; wherein the waveguide comprises an electrically non-conductive solid or liquid medium for propagating the electromagnetic data signal.Type: ApplicationFiled: June 4, 2015Publication date: December 31, 2015Inventors: Huw L. EDWARDS, Max C Y ONG, Haydn A. THOMPSON, Graham WATSON
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Patent number: 9172295Abstract: A magnetic gear arrangement is provided having a first gear member that generates a first magnetic field and a second gear member that generates a second magnetic field. A plurality of interpoles are disposed between the two gear members for coupling the first and second magnetic fields to control a gear ratio between the gear members. At least one interpole has wiring associated with it that can be activated to alter the magnetic flux at the interpole, so as to vary the coupling between the first and second magnetic fields. The wiring is electrically connected to an electronic filter, which modifies the current passing through the wiring, so as to modify the influence of the wiring on the magnetic flux at the interpole.Type: GrantFiled: June 24, 2014Date of Patent: October 27, 2015Assignee: ROLLS-ROYCE plcInventor: Huw L Edwards
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Patent number: 8960599Abstract: A tail section for an aerospace vehicle is provided. The tail section comprises a rudder which is movable about an axis to generate a yawing moment on the aerospace vehicle. The tail section further comprises a thruster having, in flow series, an air intake, an electrically powered device for accelerating the air received through the intake, and an air outlet which directs the accelerated air to increase the yawing moment generated by the rudder.Type: GrantFiled: July 5, 2011Date of Patent: February 24, 2015Assignee: Rolls-Royce PLCInventors: Huw L. Edwards, Stephen M. Husband, Paul Fletcher
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Publication number: 20140306566Abstract: A magnetic gear arrangement is provided having a first gear member that generates a first magnetic field and a second gear member that generates a second magnetic field. A plurality of interpoles are disposed between the two gear members for coupling the first and second magnetic fields to control a gear ratio between the gear members. At least one interpole has wiring associated with it that can be activated to alter the magnetic flux at the interpole, so as to vary the coupling between the first and second magnetic fields. The wiring is electrically connected to an electronic filter, which modifies the current passing through the wiring, so as to modify the influence of the wiring on the magnetic flux at the interpole.Type: ApplicationFiled: June 24, 2014Publication date: October 16, 2014Inventor: Huw L EDWARDS
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Patent number: 8813591Abstract: A magnetic gear arrangement comprises: a first gear system having a plurality of first gear members, each first gear member generating a respective first magnetic field for that gear member; a second gear system having a second gear member generating a second magnetic field; and a coupling device which provides arrangements of interpoles between the first gear system and the second gear system. The first gear members are changeably selectable by the coupling device such that the interpoles couple the first magnetic field of a selected first gear member to the second magnetic field to produce a gear ratio between the first gear system and the second gear system, the gear ratio being changeable by changing the selected first gear member.Type: GrantFiled: January 13, 2011Date of Patent: August 26, 2014Assignee: Rolls-Royce PLCInventor: Huw L. Edwards
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Patent number: 8810097Abstract: A magnetic gear arrangement is provided having a first gear member that generates a first magnetic field and a second gear member that generates a second magnetic field. A plurality of interpoles are disposed between the two gear members for coupling the first and second magnetic fields to control a gear ratio between the gear members. At least one interpole has wiring associated with it that can be activated to alter the magnetic flux at the interpole, so as to vary the coupling between the first and second magnetic fields. The wiring is electrically connected to an electronic filter, which modifies the current passing through the wiring, so as to modify the influence of the wiring on the magnetic flux at the interpole.Type: GrantFiled: July 2, 2009Date of Patent: August 19, 2014Assignee: Rolls-Royce PLCInventor: Huw L. Edwards
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Patent number: 8600464Abstract: This invention relates to a superconducting fault current limiter, including: an input segment of an input transformer core and an output segment of an output transformer, each segment having a first end and a second end; a length of superconductor which forms a winding around the input segment and a winding around output segment, wherein the windings are connected in series to form a closed loop; a cryostat in which the superconductor is housed; wherein each end of the input and output segments are exposed to the exterior of the cryostat.Type: GrantFiled: September 14, 2012Date of Patent: December 3, 2013Assignee: Rolls-Royce PLCInventors: Huw L. Edwards, Christopher G. Bright, Stephen M. Husband
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Patent number: 8546988Abstract: A magnetic gear arrangement having a first gear member for generating a first magnetic field and a second gear member for generating a second magnetic field. An interpole member is provided between the first and second gear members for coupling the two magnetic fields and controlling the gear ratio between the two gear members. The interpole member includes a unitary body of magnetizable material and associated control wiring, and is arranged such that when current is passed through the wiring, space regions of the unitary body are magnetized by an electrically-induced magnetic field. Discrete interpoles, the number and spacing of which define the gear ratio, are then formed in the unitary body between adjacent magnetized regions.Type: GrantFiled: July 2, 2009Date of Patent: October 1, 2013Assignee: Rolls-Royce PLCInventors: Christopher G. Bright, Huw L. Edwards
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Patent number: 8482171Abstract: A magnetic gear arrangement comprises: (i) a first gear member for generating a first magnetic field, (ii) a second gear member for generating a second magnetic field, and (iii) a coupling device which provides arrangements of interpoles between the first gear member and the second gear member. The interpoles couple the first and second magnetic fields such that different arrangements of interpoles produce different gear ratios between the first and second gear members. The coupling device comprises a plurality of ferromagnetic pole elements which at leastly partly form the interpoles. Each pole element has a Curie temperature whereby the pole element is active below its Curie temperature and inactive above its Curie temperature.Type: GrantFiled: November 9, 2009Date of Patent: July 9, 2013Assignee: Rolls-Royce PLCInventor: Huw L. Edwards
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Publication number: 20130090243Abstract: This invention relates to a superconducting fault current limiter, including: an input segment of an input transformer core and an output segment of an output transformer, each segment having a first end and a second end; a length of superconductor which forms a winding around the input segment and a winding around output segment, wherein the windings are connected in series to form a closed loop; a cryostat in which the superconductor is housed; wherein each end of the input and output segments are exposed to the exterior of the cryostat.Type: ApplicationFiled: September 14, 2012Publication date: April 11, 2013Applicant: ROLLS-ROYCE PLCInventors: Huw L. EDWARDS, Christopher G. BRIGHT, Stephen M. HUSBAND
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Publication number: 20120291575Abstract: A magnetic gear arrangement comprises: a first gear system having a plurality of first gear members, each first gear member generating a respective first magnetic field for that gear member; a second gear system having a second gear member generating a second magnetic field; and a coupling device which provides arrangements of interpoles between the first gear system and the second gear system. The first gear members are changeably selectable by the coupling device such that the interpoles couple the first magnetic field of a selected first gear member to the second magnetic field to produce a gear ratio between the first gear system and the second gear system, the gear ratio being changeable by changing the selected first gear member.Type: ApplicationFiled: January 13, 2011Publication date: November 22, 2012Applicant: ROLLS-ROYCE PLCInventor: Huw L. Edwards
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Patent number: 8111496Abstract: An earthing arrangement for a DC electrical system (10), the electrical system (10) comprises a plurality of earthing points (24A, 24B, 24C) and each earthing point (24A, 24B, 24C) is directly and permanently connected to earth (26) by a high impedance connection (28A, 28B, 28C). Each earthing point (24A, 24B, 24C) is selectively connectable to earth (26) in electrical parallel with the high impedance connection (28A, 28B, 28C) by a solid connection (30A, 30B, 30C) and a switch (32A, 32B, 32C). In first mode of operation the switch (32A) between the earthing point (24A) and the earth (26) of only one of the plurality of earthing points (24A, 24B, 24C) is closed.Type: GrantFiled: February 11, 2009Date of Patent: February 7, 2012Assignee: Rolls-Royce PLCInventors: Stephen A Long, David R Trainer, Lihua Hu, Huw L Edwards
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Publication number: 20120025013Abstract: A tail section for an aerospace vehicle is provided. The tail section comprises a rudder which is movable about an axis to generate a yawing moment on the aerospace vehicle. The tail section further comprises a thruster having, in flow series, an air intake, an electrically powered device for accelerating the air received through the intake, and an air outlet which directs the accelerated air to increase the yawing moment generated by the rudder.Type: ApplicationFiled: July 5, 2011Publication date: February 2, 2012Applicant: ROLLS-ROYCE PLCInventors: Huw L. EDWARDS, Stephen M. HUSBAND, Paul FLETCHER