Patents Assigned to Raytheon Technologies Corporation
  • Non-contacting dynamic seal
    Patent number: 11674401
    Abstract: A seal for a gas turbine engine includes a full hoop outer ring, a shoe coupled to the full hoop outer ring via an inner beam and an outer beam, and a wave spring in contact with at least one of the inner beam or the outer beam.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: June 13, 2023
    Assignee: Raytheon Technologies Corporation
    Inventors: Ross Wilson, John R. Farris, Michael G. McCaffrey, Theodore W. Hall, John J. Korzendorfer, Elizabeth F. Vinson, Jeffrey Michael Jacques, John E. Paul, Edwin Otero, Alan W. Stoner
  • Machine learning based rotor alloy design system
    Patent number: 11676009
    Abstract: A method for designing a material for an aircraft component according to one example includes training a neural network to correlate microstructural features of an alloy with material properties of the alloy by at least providing a set of images of the alloy. Each of the images in the set of images has varied constituent compositions and at least one patch of corresponding data is embedded into the image. The method also includes determining non-linear relationships between the microstructural features and corresponding empirically determined material properties via a machine learning algorithm, receiving a set of desired material properties of the alloy for aircraft component, and determining a set of microstructural features capable of achieving the desired material properties of the alloy based on the determined non-linear relationships.
    Type: Grant
    Filed: October 4, 2019
    Date of Patent: June 13, 2023
    Assignee: Raytheon Technologies Corporation
    Inventors: Nagendra Somanath, Ryan B. Noraas, Michael J Giering, Olusegun T Oshin
  • Low profile rotating bearing centering spring
    Patent number: 11674548
    Abstract: A bearing assembly of a gas turbine engine includes a bearing inner race, a bearing outer race located radially outboard of the bearing inner race and a plurality of bearing elements located between the bearing inner race and the bearing outer race. A centering spring is operably connected to and supports the bearing outer race. The centering spring is an annular structure including a base portion, a tip portion, and a plurality of beams extending axially between the base portion and the tip portion.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: June 13, 2023
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Todd A. Davis, Paul R. Hanrahan
  • Multi-engine coordination during gas turbine engine motoring
    Patent number: 11674411
    Abstract: A system is provided for multi-engine coordination of gas turbine engine motoring in an aircraft. The system includes a controller operable to determine a motoring mode as a selection between a single engine dry motoring mode and a multi-engine dry motoring mode based on at least one temperature of a plurality of gas turbine engines and initiate dry motoring based on the motoring mode.
    Type: Grant
    Filed: June 28, 2021
    Date of Patent: June 13, 2023
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Subhradeep Chowdhury, David M. Bostwick, David Gelwan, Frederick M. Schwarz
  • Forming cooling aperture(s) using electrical discharge machining
    Patent number: 11673200
    Abstract: A manufacturing method is provided. During this method, a preform component is provided for a turbine engine. The preform component includes a substrate comprising electrically conductive material having an outer coating comprising non-electrically conductive material applied over a surface of the substrate. A preform aperture is formed in the preform component using an electrical discharge machining electrode. The preform aperture includes a meter section of a cooling aperture in the substrate. The preform aperture also includes a pilot hole in the outer coating. A diffuser section of the cooling aperture is formed in at least the outer coating using a second machining process.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: June 13, 2023
    Assignee: Raytheon Technologies Corporation
    Inventor: James M. Koonankeil
  • Method for removing refractory metal cores
    Patent number: 11673188
    Abstract: A furnace for removing a molybdenum-alloy refractory metal core through sublimation comprising a retort furnace having an interior; a sublimation fixture insertable within the interior of the retort furnace, the sublimation fixture configured to receive at least one turbine blade having the molybdenum-alloy refractory metal core; a flow passage thermally coupled to the retort furnace configured to heat a fluid flowing through the flow passage and deliver the fluid to the molybdenum-alloy refractory metal core causing sublimation of the molybdenum-alloy refractory metal core.
    Type: Grant
    Filed: February 21, 2022
    Date of Patent: June 13, 2023
    Assignee: Raytheon Technologies Corporation
    Inventors: Daniel A. Bales, Thomas DeMichael
  • Front section stiffness ratio
    Patent number: 11674415
    Abstract: A gear reduction reduces a speed of a fan rotor relative to a speed of a fan drive turbine. A rigid connection between a fan case and an inner core housing includes a plurality of A-frames connected at a connection point to the fan case. Legs in the A-frames extend away from the connection point in opposed circumferential directions to be connected to a compressor wall of the inner core housing. The rigid connection also includes a plurality of fan exit guide vanes rigidly connected to the fan case. A lateral stiffness ratio of the lateral stiffness of the plurality of fan exit guide vanes and a lateral stiffness of a combination of the plurality of A-frame, the compressor wall, and a fan intermediate case which is forward of the low pressure compressor being greater than or equal to 0.6 and less than or equal to 2.0.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: June 13, 2023
    Assignee: Raytheon Technologies Corporation
    Inventors: Marc J. Muldoon, Michael E. McCune, Keith B. Allyn
  • Geared gas turbine engine with combined spray bar and scavenge component
    Patent number: 11674440
    Abstract: A gear reduction includes a sun gear that engages a plurality of planet gears mounted on a carrier. The planet gears are engaged with a ring gear. The ring gear is fixed against rotation such that rotation of the sun gear causes rotation of the planet gears to cause rotation of the carrier. There are spray bars positioned circumferentially between adjacent ones of the planet gears. The spray bars have jet openings, such that lubricant can be passed directly onto teeth on the sun gear. One of the side faces has a plurality of windows such that oil can be scavenged. There are side surfaces between plurality of windows that do not have an opening. A gas turbine engine and a spray bar are also disclosed.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: June 13, 2023
    Assignee: Raytheon Technologies Corporation
    Inventor: Joseph H. Polly
  • Seal system having silicon layer and barrier layer
    Patent number: 11674448
    Abstract: A seal system includes a ceramic component, a metallic component, a silicon-containing layer, and a barrier layer. The ceramic component has a first surface region that defines a first surface roughness. The metallic component is situated adjacent to the first surface region and has a second surface region facing the first surface region. The silicon-containing layer is on the first surface region of the ceramic component and has a contact surface that defines a second surface roughness which is less than the first surface roughness. The barrier layer is on the metallic component and in contact with the silicon-containing layer and serves to limit interaction between silicon of the silicon-containing layer and the metallic component. The barrier layer includes at least one of alumina or MCrAlY.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: June 13, 2023
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Raymond Surace, Brian T. Hazel, Robert A. White, III, Zhongfen Ding
  • Seal assembly with seal arc segment
    Patent number: 11674404
    Abstract: A seal assembly includes first, second, and third gas turbine engine components, such as vane assemblies, that are successively arranged around an axis. Each component has first and second mate faces such that the first mate face of the first component and the second mate face of the second component define a first mate face gap, and the first mate face of the second component and the second mate face of the third component to define a second mate face gap. A seal arc segment has first and second seal portions and a connector portion that joins the seal portions. The first seal portion bridges the first mate face gap to seal the first mate face gap, the second seal portion bridges the second mate face gap to seal the second mate face gap, and the connector portion spans circumferentially across the second component.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: June 13, 2023
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Raymond Surace, Howard J. Liles
  • Aircraft heat exchangers and plates
    Patent number: 11674758
    Abstract: A heat exchanger plate for provides heat transfer between a first flow along a first flowpath and a second flow along a second flowpath. The heat exchanger plate comprised a body having: a first face and a second face opposite the first face; a leading edge along the second flowpath and a trailing edge along the second flowpath; a proximal edge having at least one inlet port along the first flowpath and at least one outlet port along the first flowpath; and at least one passageway along the first flowpath. Along a proximal portion, the first face and the second face converge at a first angle. Along a distal portion, the first face and the second face converge at a second angle less than the first angle.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: June 13, 2023
    Assignee: Raytheon Technologies Corporation
    Inventors: Russell J. Bergman, William D. Blickenstaff, James F. Wiedenhoefer, Scott D. Virkler, Jason D. Liles
  • Hydrostatic seal with non-parallel beams for anti-tipping
    Patent number: 11674402
    Abstract: A hydrostatic advanced low leakage seal configured to be disposed between relatively rotatable components. The seal includes a base. The seal also includes a shoe extending circumferentially. The seal further includes a radially outer beam operatively coupling the shoe to the base. The seal yet further includes a radially inner beam operatively coupling the shoe to the base, wherein one of the radially inner beam and the radially outer beam is oriented to be angled relative to the other of the radially inner and outer beam.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: June 13, 2023
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventor: Michael G. McCaffrey
  • Deep roll peening system and method
    Patent number: 11673227
    Abstract: A method for deep roll peening a workpiece includes deep roll peening a workpiece by moving the workpiece along a feed path through multiple groups of opposed rollers that are arranged in series. Each group of opposed rollers includes a rim that defines a workpiece engagement surface that exerts a deep roll peening force on the workpiece. A deep roll peening system includes multiple groups of opposed rollers. Each of the opposed rollers is rotatably mounted and has a rim that defines a workpiece engagement surface. The workpiece engagement surfaces are spaced apart from each other by a gap. The groups are arranged in series such that the gaps define a feed path for receiving a workpiece into serial contact with the workpiece engagement surfaces.
    Type: Grant
    Filed: March 30, 2020
    Date of Patent: June 13, 2023
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Andrzej Ernest Kuczek, Joseph C. Rampone, Tahany Ibrahim El-Wardany, Paul R. Faughnan, Jr.
  • Pressure-Balanced Carbon Seal
    Publication number: 20230175409
    Abstract: A seal segment has an arcuate body having: a first end; a second end circumferentially opposite the first end; a first face; a second face axially opposite the first face; an inner diameter (ID) face; and an outer diameter (OD) face. The seal segment is shaped to interfit with a plurality of identical seal segments first end to second end to form a seal surrounding a central longitudinal axis. The first face has: a circumferential channel closer to the ID face than the OD face; and a plurality of channels extending from the circumferential channel to the OD face. The ID face has: a circumferential channel closer to the first face than the second face; and a plurality of channels extending from the circumferential channel to the second face. The ID face circumferential channel has an open end.
    Type: Application
    Filed: December 3, 2021
    Publication date: June 8, 2023
    Applicant: Raytheon Technologies Corporation
    Inventors: Jonathan Logan Miller, Thomas P. Obligado
  • Carbon Face Seal
    Publication number: 20230175589
    Abstract: An apparatus has: a first member; a shaft rotatable relative to the first member about an axis; and a seal system. The seal system has: a seal carried by the first member and having a seal face; a seal carrier; a seat carried by the shaft and having a seat face in sliding sealing engagement with the seal face; and one or more springs biasing the seal carrier relative to the first member so as to bias the seal face against the seat face. The seal carrier has: an axially-extending wall having an inner diameter (ID) surface; and a radially-extending wall having a first surface. The seal carrier axially-extending wall ID surface has a radially inwardly open groove having a first sidewall and a second sidewall and a base. A wave-form split ring contacts the first sidewall and biases the seal into engagement with the radial wall first surface.
    Type: Application
    Filed: December 3, 2021
    Publication date: June 8, 2023
    Applicant: Raytheon Technologies Corporation
    Inventors: Brian P. Cigal, Christopher T. Anglin
  • Methods and systems for starting hydrogen powered gas generators
    Patent number: 11668243
    Abstract: Aircraft hydrogen fuel systems and methods and systems of starting such systems are described. The aircraft hydrogen fuel systems include a hydrogen burning main engine, a main tank configured to contain liquid hydrogen to be supplied to the main engine during a normal operation, and a starter tank configured to contain gaseous hydrogen to be used during a startup operation of the main engine. Methods and processes for starting and/or restarting such systems are described.
    Type: Grant
    Filed: May 25, 2021
    Date of Patent: June 6, 2023
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Marc J. Muldoon, Carroll V. Sidwell
  • Geared gas turbine with oil scavenge ejector pump assist
    Patent number: 11668247
    Abstract: A gas turbine engine has a low pressure turbine driving a fan rotor through a gear reduction gearbox. The low pressure turbine has an input shaft driving a sun gear. The sun gear drives intermediate gears. There is an output shaft driven by one of a carrier and a ring gear in the gear reduction to in turn drive a fan drive shaft to drive the fan. A bearing compartment housing encloses the gear reduction gearbox. A fan shaft bearing supports the fan drive shaft. An oil supply system delivers oil to at least one of the sun gear, the intermediate gears and the ring gear. A scavenge system returns oil from the bearing compartment housing to a sump. An ejector pump communicates with a source of pressurized fluid to assist in driving oil from within the bearing compartment housing into a scavenge tube.
    Type: Grant
    Filed: April 16, 2021
    Date of Patent: June 6, 2023
    Assignee: Raytheon Technologies Corporation
    Inventors: Francis Parnin, Vaidyanathan Sankaran
  • Welded assemblies and methods of making welded assemblies
    Patent number: 11666990
    Abstract: A welded assembly includes a first sheet and a second sheet. The second sheet is disposed over a portion of the first sheet and defines an overlap portion between the first and second sheets. A weld fastening the second sheet to the first sheet in the overlap area connects the second sheet to the first sheet for distributing stress uniformly across a welded portion of the overlap area.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: June 6, 2023
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Russell P. Parrish, Thomas M. Barry, Jr., Felix I. Quiros-Pedraza, Harvey C. Lee, Michael A. Disori, Alison Schoolcraft
  • Vane with pin mount and anti-rotation
    Patent number: 11668200
    Abstract: A vane arc segment includes an airfoil fairing that has first and second fairing platforms and a hollow airfoil section that extends there between. A spar has a spar platform adjacent the first fairing platform and a spar leg that extends from the spar platform and through the hollow airfoil section. The spar leg has an end portion that is distal from the platform and that protrudes from the second fairing platform. The end portion has a clevis mount. There is a support platform adjacent the second fairing platform. The support platform has a through-hole through which the end portion of the spar leg extends such that the clevis mount protrudes from the support platform. A pin extends though the clevis mount and locks the support platform to the spar leg such that the airfoil fairing is trapped between the spar platform and the support platform.
    Type: Grant
    Filed: January 15, 2021
    Date of Patent: June 6, 2023
    Assignee: RAYTHEON TECHNOLOGIES CORPORATION
    Inventors: Jon E. Sobanski, Howard J. Liles, Bryan P. Dube, Wojciech Lipka
  • Internally damped airfoiled component
    Patent number: 11668197
    Abstract: An airfoiled component comprises: a root section, an airfoil section, a damper pocket enclosed within a portion of the airfoil section, and a damper. The airfoil section includes a suction sidewall and a pressure sidewall each extending chordwise between a leading edge and a trailing edge, and extending spanwise between the root section and an airfoil tip. The damper includes a fixed end unified with a damper mounting surface, and a free end extending into the damper pocket from the damper mounting surface.
    Type: Grant
    Filed: May 20, 2020
    Date of Patent: June 6, 2023
    Assignee: Raytheon Technologies Corporation
    Inventors: Ken F. Blaney, Richard K. Hayford