Patents Assigned to United Technologies
  • Failure mitigation and failure detection of intercooled cooling air systems
    Patent number: 10815889
    Abstract: A gas turbine engine includes a first tap connected to a compressor section to deliver air at a first pressure. A heat exchanger is downstream of the first tap. A cooling air valve selectively blocks flow of cooling air across the heat exchanger. A cooling compressor is downstream of the heat exchanger and pressurizes the air from the first tap to a greater second pressure. A shut off valve selectively stops flow of the air between the heat exchanger and the cooling compressor. A controller controls the cooling air valve, the shut off valve, and the cooling compressor such that the flow of the air is stopped between the heat exchanger and the cooling compressor only after the controller has stopped the cooling compressor. A monitoring system communicates with the controller and includes a pressure sensor and a temperature sensor downstream of the cooling compressor.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: October 27, 2020
    Assignee: United Technologies Corporation
    Inventors: Frederick M. Schwarz, Jorn Axel Glahn
  • OIL DEBRIS MONITOR TO DETECT MECHANICAL FAILURES IN HIGH NOISE ENVIRONMENTS
    Publication number: 20200333293
    Abstract: A method to effectively utilize an oil debris monitor to provide advanced warning to mechanical system failures in a high noise system by adapting detection and annunciation algorithms to the background noise in a system that includes collecting I and Q channel data from a sensor; processing the I and Q channel data to both calculate a noise based (RMS adjusted) detection threshold and to identify a ferrous and nonferrous signal; processing the ferrous and nonferrous signals to determine signal peaks above the RMS adjusted detection threshold; adjusting a detection threshold if more signal peaks observed than allowable particles in a given time window; transmitting the detection threshold previously determined to particle detection, rate limit adjustment, detectability algorithms, and estimated mass loss accumulation.
    Type: Application
    Filed: April 16, 2019
    Publication date: October 22, 2020
    Applicant: United Technologies Corporation
    Inventors: Edward Thomas Rocco, Danbing Seto
  • LOCKOUT FOR DEEP REACH MACHINING TOOL
    Publication number: 20200331080
    Abstract: A deep reach machining tool provides a swing arm cartridge that pivots relative to the tool body about an axis, an open sensor that indicates that the swing arm cartridge is in an open position with respect to the tool body, and a close sensor that indicates that the swing arm cartridge is in a closed position with respect to the tool body.
    Type: Application
    Filed: April 16, 2019
    Publication date: October 22, 2020
    Applicant: United Technologies Corporation
    Inventors: Sandra Adebowale, Michael A. Czywczynski, Grant Clemo
  • FLOATING BRUSH SEAL ASSEMBLY
    Publication number: 20200332899
    Abstract: A floating brush seal assembly includes a ring-shaped housing defining a radially inwardly open internal cavity; a brush seal in the cavity and having bristles extending radially inwardly and offset to seal against a rotating body; a radial spring positioned to exert a radial inwardly directed force against the brush seal relative to the housing; and an axial spring positioned to exert an axially directed force against the brush seal relative to the housing.
    Type: Application
    Filed: April 16, 2019
    Publication date: October 22, 2020
    Applicant: United Technologies Corporation
    Inventor: Armando Amador
  • ADDITIVE MANUFACTURING BASED MULTI-LAYER FABRICATION/REPAIR
    Publication number: 20200331059
    Abstract: A method of additively manufacturing includes generating a thermal model driven scan map that identifies an equiaxed cap region, a single crystal (SX) region, and a columnar to equiaxed transition (CET) region; and forming an active melt pool with respect to the thermal model driven scan map such that a depth of the active melt pool is greater than a thickness of the equiaxed transition (CET) region.
    Type: Application
    Filed: April 16, 2019
    Publication date: October 22, 2020
    Applicant: United Technologies Corporation
    Inventors: Ranadip Acharya, Vijay Narayan Jagdale
  • Turbine engine case mount and dismount
    Patent number: 10808622
    Abstract: A method for mounting a gas turbine engine having a compressor section, a combustor section, a turbine section, a pylon and a rear mount bracket, includes positioning the mounting bracket between the gas turbine engine and the pylon. The mounting bracket is connected to the turbine case reacting a least a vertical load, a side load, a thrust load, and a torque load from the gas turbine engine through the mounting bracket. The mounting bracket is attached to the pylon reacting the same loads from the gas turbine engine.
    Type: Grant
    Filed: July 27, 2018
    Date of Patent: October 20, 2020
    Assignee: United Technologies Corporation
    Inventors: Gabriel L. Suciu, Ioannis Alvanos, Brian Merry
  • Gas turbine engine fan blade, design, and fabrication
    Patent number: 10808545
    Abstract: An embodiment of a fan blade includes an interior region between a metallic pressure sidewall and a metallic suction sidewall. Each sidewall extends in span from a base to a tip, and extends in chord from a leading edge to a trailing edge. The interior region of the fan blade includes a first fully dense metallic portion and a first porous metallic portion. The first fully dense metallic portion has a volume occupying at least 10% of a total volume of the interior region, and substantially no porosity. The first porous metallic portion is integrally joined to the fully dense metallic portion, and is selected from a structured lattice, an unstructured foam, and combinations thereof.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: October 20, 2020
    Assignee: United Technologies Corporation
    Inventors: Tahany Ibrahim El-Wardany, Matthew E. Lynch, Om P. Sharma, Catalin G. Fotache
  • Airfoil cooling circuits
    Patent number: 10808551
    Abstract: An airfoil includes leading and trailing edges; first and second sides extending from the leading edge to the trailing edge, each side having an exterior surface; a core passage located between the first and second sides and the leading and trailing edges; and a wall structure located between the core passage and the exterior surface of the first side. The wall structure includes a plurality of cooling fluid inlets communicating with the core passage for receiving cooling fluid from the core passage, a plurality of cooling fluid outlets on the exterior surface of the first side for expelling cooling fluid and forming a cooling film along the exterior surface of the first side, and a plurality of cooling passages communicating with the plurality of cooling fluid inlets and the plurality of cooling fluid outlets. At least a portion of one cooling passage extends between adjacent cooling fluid outlets.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: October 20, 2020
    Assignee: United Technologies Corporation
    Inventors: Eric A. Hudson, Tracy A. Propheter-Hinckley, San Quach, Matthew A. Devore
  • AFTER-FAN SYSTEM FOR A GAS TURBINE ENGINE
    Publication number: 20200325852
    Abstract: An after-fan system for a gas turbine engine includes a variable pitch fan exit guide vane array. An after-fan turbine downstream of the variable pitch fan exit guide vane array and a control operable to vary a pitch of the variable fan exit guide vane array. A method of generating thrust for a gas turbine engine includes rotating a fan section with an array of fan blades; rotating an after-fan turbine downstream of the fan section; and varying a pitch of a variable fan exit guide vane array downstream of the fan section and upstream of the after-fan turbine.
    Type: Application
    Filed: April 1, 2020
    Publication date: October 15, 2020
    Applicant: United Technologies Corporation
    Inventors: Dmitriy B. Sidelkovskiy, Pitchaiah Vijay Chakka, Michael Winter, Daniel Bernard Kupratis
  • GEOMETRICALLY SEGMENTED THERMAL BARRIER COATING WITH SPALL INTERRUPTER FEATURES
    Publication number: 20200325783
    Abstract: A method of preventing spallation for a geometrically segmented thermally insulating top coat on an article, the method comprising forming a surface feature in a surface of the article; forming a crack deflection feature in the surface proximate the surface feature; disposing the thermally insulating topcoat over the surface feature; and forming segmented portions that are separated by faults extending through the thermally insulating topcoat from the surface feature.
    Type: Application
    Filed: April 15, 2019
    Publication date: October 15, 2020
    Applicant: United Technologies Corporation
    Inventors: Christopher W. Strock, Paul M. Lutjen
  • VIBRATION ISOLATOR ASSEMBLY
    Publication number: 20200325795
    Abstract: A vibration isolating bushing assembly may comprise a first T-bushing configured to receive a fastener, a second T-bushing configured to couple to the first T-bushing and the fastener, a first isolating washer, and a second isolating washer, wherein the first isolating washer and the second isolating washer are configured to couple between the first T-bushing and the second T-bushing.
    Type: Application
    Filed: April 11, 2019
    Publication date: October 15, 2020
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Norman John Dube, Michael Sapanaro, JR.
  • Attachment for high temperature CMC combustor panels
    Patent number: 10801731
    Abstract: A combustor panel for use in a gas turbine engine includes a body portion having an outwardly curved edge defining a channel between the body portion and the outwardly curved edge. The outwardly curved edge includes a plurality of slots. The panel further includes a fastening member having a base disposed within the channel and a plurality of fasteners extending from the base and disposed within the slots.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: October 13, 2020
    Assignee: United Technologies Corporation
    Inventor: Gary J. Dillard
  • PRE-DIFFUSER FOR A GAS TURBINE ENGINE
    Publication number: 20200318833
    Abstract: A hot fairing structure for a pre-diffuser includes a ring-strut-ring structure that comprises a multiple of hollow struts; and a multiple of diffusion passage ducts attached to the ring-strut-ring structure. A pre-diffuser for a gas turbine engine includes an exit guide vane ring having a multiple of exit guide vanes defined around an engine longitudinal axis; a ring-strut-ring structure adjacent to the exit guide vane ring to form a multiple of diffusion passages defined around the engine longitudinal axis, an inlet to each of the multiple of diffusion passages smaller than an exit from each of the multiple diffusion passage through the ring-strut-ring structure; a diffusion passage duct attached to the ring-strut-ring structure at the exit from each of the multiple diffusion passage.
    Type: Application
    Filed: April 5, 2019
    Publication date: October 8, 2020
    Applicant: United Technologies Corporation
    Inventors: Michael G. McCaffrey, Matthew Andrew Hough, Pedro Rivero
  • LASER CLEANING PRIOR TO METALLIC COATING OF A SUBSTRATE
    Publication number: 20200318227
    Abstract: A method for treating a substrate prior to metallic coating includes the steps of providing a substrate having a surface to be coated and at least one contaminant selected from as-delivered organics and post-burn out oxides on the surface; treating the surface with a laser to remove the at least one contaminant to produce a cleaned surface on the substrate; and applying a metallic coating to the cleaned surface. Grit blasting can be avoided, and reverse arc transfer cleaning is avoided or minimized, resulting in time savings and less stress on the substrate.
    Type: Application
    Filed: April 4, 2019
    Publication date: October 8, 2020
    Applicant: United Technologies Corporation
    Inventors: Henry H. Thayer, Bartolomeo Palmieri, Dmitri Novikov
  • LOW FRICTION, WEAR RESISTANT PISTON SEAL
    Publication number: 20200318737
    Abstract: A piston seal assembly for a gas turbine engine includes a seal composed of a nickel-based superalloy; a component in contact with the seal and defining a seal-counterface; and a coating on the seal at the seal-counterface, wherein the coating is a metal alloy binder phase and a hard particle phase distributed through the binder phase.
    Type: Application
    Filed: April 5, 2019
    Publication date: October 8, 2020
    Applicant: United Technologies Corporation
    Inventors: Pantcho P. Stoyanov, Kelly M. Harrington
  • PRE-DIFFUSER FOR A GAS TURBINE ENGINE
    Publication number: 20200318652
    Abstract: A pre-diffuser for a gas turbine engine includes an exit guide vane ring having a multiple of exit guide vanes defined around an engine longitudinal axis; a hot fairing structure adjacent to the exit guide vane ring to define a multiple of diffusion passages around the engine longitudinal axis; an outer radial interface between a radial outer surface of the hot fairing structure and the exit guide vane ring, the outer radial interface being a full hoop structure; and an anti-rotation feature between the hot fairing structure and the exit guide vane ring, the anti-rotation features inboard of the multiple of diffusion passages.
    Type: Application
    Filed: April 5, 2019
    Publication date: October 8, 2020
    Applicant: United Technologies Corporation
    Inventors: Michael G. McCaffrey, Pedro Rivero, Matthew Andrew Hough
  • PRE-DIFFUSER FOR A GAS TURBINE ENGINE
    Publication number: 20200318832
    Abstract: A hot fairing structure for a pre-diffuser includes a ring-strut-ring structure that comprises a multiple of hollow struts and a multiple of inlets to a respective diffusion passage, one of the multiple of inlets formed between each one of the multiple of hollow struts located between two diffusion passages.
    Type: Application
    Filed: April 5, 2019
    Publication date: October 8, 2020
    Applicant: United Technologies Corporation
    Inventors: Michael G. McCaffrey, Matthew Andrew Hough, Pedro Rivero
  • LASER SURFACE TREATMENT ON STAINLESS STEEL AND NICKEL ALLOYS FOR ADHESIVE BONDING
    Publication number: 20200316721
    Abstract: Methods and systems for the laser surface treatment on stainless steel alloys and nickel alloys may include a computer may be programmed to set a laser path corresponding to a predetermined geometric pattern. A laser may be coupled to the computer and apply a pulsed laser beam to a contact surface of the substrate along the predefined geometric pattern. The pulsed laser beam may have a laser power between 0.1 W and 100 W, single pulse fluence 1 mJ/mm2 and 1025 mJ/mm2 and a laser speed between 25.4 cm/s and 127 cm/s. The laser may generate an open pore oxide layer on the contact surface of the substrate with a thickness of 0.1-1 ?m, an open pore distance of 0.05-1 ?m. The open pore oxide layer may have a topography corresponding to the predefined geometric pattern. The topography may contain open pore structures and promote adhesive bond performance.
    Type: Application
    Filed: April 3, 2020
    Publication date: October 8, 2020
    Applicants: UNITED TECHNOLOGIES CORPORATION, UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF NASA
    Inventors: XIAOMEI FANG, Christopher J. Hertel, John D. Riehl, John W. Connell, Frank L. Palmieri, John W. Hopkins
  • Nickel-Based Superalloy and Heat Treatment for Salt Environments
    Publication number: 20200318221
    Abstract: An alloy has, by weight: nickel (Ni) as a largest constituent; 6.7% to 7.5% chromium; 1.8% to 2.3% molybdenum; 4.75% to 10.3% cobalt; 5.3% to 5.9% aluminum; 2.8% to 3.2% rhenium; 3.7% to 7.3% tungsten; and 6.0% to 9.0% tantalum.
    Type: Application
    Filed: April 1, 2020
    Publication date: October 8, 2020
    Applicant: United Technologies Corporation
    Inventors: Alan D. Cetel, Dilip M. Shah
  • THERMAL BARRIER COATING
    Publication number: 20200318229
    Abstract: An electron beam vapor deposition process for depositing coatings comprises placing a source coating material in a crucible of a vapor deposition apparatus having a coating chamber; pressurizing said coating chamber from about 0.5 microbar to about 40 microbar; heating a work piece surface to a temperature of from 1800 degrees Fahrenheit to 2000 degrees Fahrenheit; energizing said source coating with an electron beam that delivers a power density to the material in the crucible forming a vapor cloud from said source coating material; and depositing said source coating material onto a surface of a work piece.
    Type: Application
    Filed: March 30, 2020
    Publication date: October 8, 2020
    Applicant: United Technologies Corporation
    Inventors: Brian T. Hazel, David A. Litton, Kaylan M. Wessels