Patents by Inventor Anthony G. Razzell

Anthony G. Razzell 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).

  • Publication number: 20200392049
    Abstract: A component for use in a gas turbine engine is made from ceramic materials. The component is made from a core preform containing ceramic reinforcement fibers. A plurality of preform tows are applied on at least a portion of the core preform and extend along at least a portion of the core preform to provide an outermost surface. The core preform and the plurality of preform tows are infiltrated with ceramic matrix material to form a ceramic matrix composite component.
    Type: Application
    Filed: May 13, 2019
    Publication date: December 17, 2020
    Inventors: Anthony G. Razzell, Michael J. Whittle, Ian M. Edmonds
  • Publication number: 20200362707
    Abstract: A turbine assembly adapted for use in a gas turbine engine is disclosed in this paper. The turbine assembly includes a turbine vane comprising ceramic matrix composite materials configured for use in high temperature environments. The turbine assembly further includes a vane-stage support for holding the turbine vane and other components in place relative to a turbine case.
    Type: Application
    Filed: May 13, 2019
    Publication date: November 19, 2020
    Inventors: Michael J. Whittle, Anthony G. Razzell, Roderick M. Townes, David J. Shepherd, Duncan Forbes
  • Publication number: 20200355089
    Abstract: A gas turbine engine assembly includes a first component, a second component, and a seal. The first component is spaced apart from the second component to form a gap between the first component and the second component. The seal is configured to block gases from flowing in the gap between the first component and the second component.
    Type: Application
    Filed: May 10, 2019
    Publication date: November 12, 2020
    Inventors: Anthony G. Razzell, Michael J. Whittle, Steven Hillier
  • Publication number: 20200340365
    Abstract: A turbine assembly adapted for use in a gas turbine engine is disclosed in this paper. The turbine assembly includes a turbine vane comprising ceramic matrix composite materials configured for use in high temperature environments. The turbine assembly further includes a vane-stage support for holding the turbine vane and other components in place relative to a turbine case.
    Type: Application
    Filed: April 23, 2019
    Publication date: October 29, 2020
    Inventors: Michael J. Whittle, Anthony G. Razzell, Roderick M. Townes, David J. Shepherd, Duncan Forbes
  • Publication number: 20200340370
    Abstract: A turbine assembly adapted for use in a gas turbine engine with a turbine vane comprising ceramic matrix composite materials. The turbine vane is configured to redirect air moving through a primary gas path of the gas turbine engine. The turbine assembly includes a vane-stage support for holding the turbine vane in place relative to a turbine case.
    Type: Application
    Filed: April 23, 2019
    Publication date: October 29, 2020
    Inventors: Michael J. Whittle, Anthony G. Razzell, Roderick M. Townes, David J. Shepherd, Duncan Forbes
  • Publication number: 20200340363
    Abstract: A turbine assembly adapted for use in a gas turbine engine with a turbine vane comprising ceramic matrix composite materials. The turbine vane is configured to redirect air moving through a primary gas path of the gas turbine engine. The turbine assembly includes a vane-stage support for holding the turbine vane in place relative to a turbine case.
    Type: Application
    Filed: April 23, 2019
    Publication date: October 29, 2020
    Inventors: Michael J. Whittle, Anthony G. Razzell, Roderick M. Townes, David J. Shepherd, Duncan Forbes
  • Publication number: 20200340367
    Abstract: A turbine assembly adapted for use in a gas turbine engine is disclosed in this paper. The turbine assembly includes a turbine vane comprising ceramic matrix composite materials configured for use in high temperature environments. The turbine assembly further includes a vane-stage support for holding the turbine vane and other components in place relative to a turbine case.
    Type: Application
    Filed: April 23, 2019
    Publication date: October 29, 2020
    Inventors: Michael J. Whittle, Anthony G. Razzell, Roderick M. Townes, David J. Shepherd, Duncan Forbes
  • Patent number: 8915136
    Abstract: A method is provided of determining the internal cross-sectional area of a pipe along its length. The method includes the steps of: (a) filling the pipe with a first fluid; (b) feeding a second fluid into the pipe at a known flow rate, a meniscus being formed between the first and the second fluid, and the meniscus moving along the pipe as the second fluid displaces the first fluid in the pipe; (c) ultrasonically detecting the position of the meniscus as it moves along the pipe; and (d) determining from the second fluid flow rate and the meniscus position, the internal cross-sectional area of the pipe along its length.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: December 23, 2014
    Assignee: Rolls-Royce PLC
    Inventors: Anthony G. Razzell, Robert J. Mitchell
  • Patent number: 8869638
    Abstract: A method for inspecting the interior of a non-horizontal pipe includes (a) filling the pipe with a first fluid, (b) feeding a second fluid into a lower part of the pipe when the second fluid is more dense than the first fluid or into an upper part of the pipe when the second fluid is less dense than the second fluid the pipe, a meniscus forming between the first and the second fluid and moving along the pipe, (c) introducing an inspection device having an average density between the densities of the first and second fluids such that the device locates at and moves with the meniscus, (d) obtaining inspection data from the inspection device as the device moves along the pipe, (e) determining positions of the meniscus as it moves along the pipe, and (f) relating the meniscus positions to positions at which the inspection data is obtained.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: October 28, 2014
    Assignee: Rolls-Royce PLC
    Inventors: Anthony G. Razzell, Robert J. Mitchell
  • Patent number: 8387248
    Abstract: A heat exchanger is provided in which heat exchanger shells are formed by electro forming about a mandrel. The shells are attached and joined to provide a heat exchanger module. As the shells are not press formed problems with respect to material elongation to achieve deep grooves in the shells are potentially avoided and shells can be created with more desirable thickness to achieve more efficient heat exchange. Furthermore, reduced shell thickness will also reduce weight and therefore improve the acceptability of heat exchangers in particular applications such as those associated with aerospace and automotive sports.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: March 5, 2013
    Assignee: Rolls-Royce, PLC
    Inventors: Andrew M. Rolt, Anthony G. Razzell
  • Patent number: 8333563
    Abstract: Blade arrangements formed in a blisk configuration include a number of blades secured integrally or through welds or similar bonding to a rotor disc. The blades may be subject to vibration and it would be desirable to provide heat protection to junctions between the blades and the rotor. By providing insert elements between adjacent platform sections of a blade pair, vibrational damping as well as heat shielding and capability with regard to aerodynamic profiling is achieved.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: December 18, 2012
    Assignee: Rolls-Royce PLC
    Inventor: Anthony G. Razzell
  • Publication number: 20120260741
    Abstract: A method is provided of determining the internal cross-sectional area of a pipe along its length. The method includes the steps of: (a) filling the pipe with a first fluid; (b) feeding a second fluid into the pipe at a known flow rate, a meniscus being formed between the first and the second fluid, and the meniscus moving along the pipe as the second fluid displaces the first fluid in the pipe; (c) ultrasonically detecting the position of the meniscus as it moves along the pipe; and (d) determining from the second fluid flow rate and the meniscus position, the internal cross-sectional area of the pipe along its length.
    Type: Application
    Filed: April 4, 2012
    Publication date: October 18, 2012
    Applicant: ROLLS-ROYCE PLC
    Inventors: Anthony G. RAZZELL, Robert J. MITCHELL
  • Publication number: 20120260735
    Abstract: A method for inspecting the interior of a non-horizontal pipe includes (a) filling the pipe with a first fluid, (b) feeding a second fluid into a lower part of the pipe when the second fluid is more dense than the first fluid or into an upper part of the pipe when the second fluid is less dense than the second fluid the pipe, a meniscus forming between the first and the second fluid and moving along the pipe, (c) introducing an inspection device having an average density between the densities of the first and second fluids such that the device locates at and moves with the meniscus, (d) obtaining inspection data from the inspection device as the device moves along the pipe, (e) determining positions of the meniscus as it moves along the pipe, and (f) relating the meniscus positions to positions at which the inspection data is obtained.
    Type: Application
    Filed: April 4, 2012
    Publication date: October 18, 2012
    Applicant: ROLLS-ROYCE PLC
    Inventors: Anthony G. RAZZELL, Robert J. MITCHELL
  • Patent number: 8246299
    Abstract: A ceramic seal segment for a shroud ring of a rotor of a gas turbine engine, the ceramic seal segment positioned radially adjacent the rotor and characterized by being a hollow section that defines an inlet and an outlet for the passage of coolant therethrough.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: August 21, 2012
    Assignee: Rolls-Royce, PLC
    Inventors: Anthony G. Razzell, Steven M. Hillier
  • Patent number: 8002517
    Abstract: Sensors (32, 52, 72) for determining a gap between a conductive member (34, 54, 74) such as a blade in a gas turbine engine and a seal segment (31, 51) are known to use capacitive variants in order to create an electrical signal indicative of the gap width. Thermal disparities can create problems with regard to sensor aging and accuracy. By creating a sensor incorporating a metal rod (33, 53, 74) typically integrally formed or associated with the seal segment (31, 51) and coupled through inductive coupling loops (35, 36; 55, 56; 75) it is possible to create a tuned circuit with a Q value which is more stable and therefore acceptable with regard to producing more accurate results at elevated temperatures with less problems with regard to thermal disparities.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: August 23, 2011
    Assignee: Rolls-Royce PLC
    Inventors: Anthony G. Razzell, Lee Mansfield, Leo V. Lewis
  • Patent number: 7874793
    Abstract: Control of blade clearance gaps between rotating turbine blades and an associated casing in a gas turbine engine is important in order to maintain operational efficiency. It is desirable to achieve accurate gap control but previous passive and scheduled thermal gap adjustment systems have been relatively course. By provision of a winding through which a specific electrical current is passed in order to create electro-magnetic force for displacement of an armature associated with a seal forming part of the casing it is possible to adjust the gap between that seal and a tip part of a rotating blade assembly. Normally a blade gap monitoring technique is used in association with specific operational requirements with respect to the gap by the control in order to determine the electrical current presented to the winding.
    Type: Grant
    Filed: August 7, 2007
    Date of Patent: January 25, 2011
    Assignee: Rolls-Royce plc
    Inventors: Anthony G Razzell, John R Webster, Geraint W Jewell
  • Publication number: 20100054917
    Abstract: Blade arrangements 130 may be formed in a blisk configuration comprising a number of blades secured integrally or through welds or similar bonding to a rotor disc. The blades may be subject to vibration and it would be desirable to provide heat protection to junctions 33 between the blades and the rotor 31. By providing insert elements 34 between adjacent platform sections 35 of a blade pair vibrational damping as well as heat shielding and capability with regard to aerodynamic profiling is achieved.
    Type: Application
    Filed: June 22, 2009
    Publication date: March 4, 2010
    Applicant: ROLLS-ROYCE PLC
    Inventor: Anthony G. Razzell
  • Patent number: 7637096
    Abstract: A pressure rise combustor is provided with fuel provided at intermittent periods. The fuel is pulsed at timings such that the phase lag between the addition of the fuel and a resultant pressure rise is minimized. The fuel is pulsed such that the unsteady addition of heat reinforces the amplitude of an unsteady pressure fluctuation.
    Type: Grant
    Filed: November 1, 2005
    Date of Patent: December 29, 2009
    Assignee: Rolls-Royce plc
    Inventors: Anthony G Razzell, Mark D Taylor, Samuel A Mason, Robert J Miller
  • Publication number: 20090297330
    Abstract: Control of blade clearance gaps between rotating turbine blades and an associated casing in a gas turbine engine is important in order to maintain operational efficiency. It is desirable to achieve accurate gap control but previous passive and scheduled thermal gap adjustment systems have been relatively course. By provision of a winding through which a specific electrical current is passed in order to create electro-magnetic force for displacement of an armature associated with a seal forming part of the casing it is possible to adjust the gap between that seal and a tip part of a rotating blade assembly. Normally a blade gap monitoring technique is used in association with specific operational requirements with respect to the gap by the control in order to determine the electrical current presented to the winding.
    Type: Application
    Filed: August 7, 2007
    Publication date: December 3, 2009
    Inventors: Anthony G. Razzell, John R. Webster, Geraint W. Jewell
  • Publication number: 20090286189
    Abstract: A pressure rise combustor is provided with fuel provided at intermittent periods. The fuel is pulsed at timings such that the phase lag between the addition of the fuel and a resultant pressure rise is minimised. The fuel is pulsed such that the unsteady addition of heat reinforces the amplitude of an unsteady pressure fluctuation.
    Type: Application
    Filed: July 10, 2009
    Publication date: November 19, 2009
    Inventors: Anthony G. Razzell, Mark D. Taylor, Samuel A. Mason, Robert J. Miller