Patents by Inventor Paul M. Lutjen

Paul M. Lutjen 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).

  • COOLING PASSAGES FOR GAS TURBINE ENGINE COMPONENT
    Publication number: 20170089204
    Abstract: A gas turbine engine component includes a wall portion that includes a first side and a second opposite side. A plurality of passages extends between the first side of the wall portion and the second side of the wall portion and includes a plurality of inlets located on the first side of the wall portion. A plurality of outlets are located on a second side of the wall portion. The plurality of outlets include a first plurality of outlets located on a first side of the plurality of inlets and a second plurality of outlets located on a second side of the plurality of inlets.
    Type: Application
    Filed: September 30, 2015
    Publication date: March 30, 2017
    Inventors: Anthony B. Swift, Paul M. Lutjen
  • BLADE OUTER AIR SEAL FOR A GAS TURBINE ENGINE
    Publication number: 20170044931
    Abstract: A gas turbine engine includes a turbine section including a plurality of blade outer air seals (BOAS) disposed therein, the BOAS including a BOAS body including a plurality of cooling holes defined in substantial conformance with a set of Cartesian coordinates as set forth in at least one of Table 1 and Table 2.
    Type: Application
    Filed: August 14, 2015
    Publication date: February 16, 2017
    Inventors: Paul M. Lutjen, Carson A. Roy Thill, Dominic J. Mongillo, JR., Kevin D. Tracy, Jeffrey A. Perry, Thurman C. Dabbs
  • Conformal Air Seal With Low Friction Maxmet Layer
    Publication number: 20170030214
    Abstract: A turbine engine system comprising a turbine engine air seal having at least one contact portion. The turbine engine air seal having a MAXMET composite bonded to at least one contact portion.
    Type: Application
    Filed: January 22, 2015
    Publication date: February 2, 2017
    Applicant: United Technologies Corporation
    Inventors: Christopher W Strock, Paul M Lutjen, Shahram Amini, Sergei F Burlatsky, Dmitri Novikov
  • Mold for casting a workpiece that includes one or more casting pins
    Patent number: 9550230
    Abstract: A mold for casting a workpiece that includes a casting shell, a casting core and casting pin that supports the core within the shell. The casting shell includes an interior shell surface. The casting core is located within the shell, and includes a sidewall extending between a first core surface and a second core surface. The casting pin includes an intermediate segment connected between a first support segment and a second support segment. The intermediate segment contacts the sidewall. The first support segment extends from the first core surface to a first side of the interior shell surface. The second support segment extends from the second core surface to a second side of the interior shell surface that is opposite the first side.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: January 24, 2017
    Assignee: United Technologies Corporation
    Inventors: Paul M. Lutjen, Christopher W. Strock
  • SEAL FOR A GAS TURBINE ENGINE
    Publication number: 20170002675
    Abstract: A gas turbine engine assembly includes a shield that has a first portion and a second portion. The first portion extends radially from an axial end portion of the shield and includes a blade outer air seal contact surface. The second portion extends axially from a radially outer end of the first portion and includes a vane contact surface.
    Type: Application
    Filed: July 2, 2015
    Publication date: January 5, 2017
    Inventors: Paul M. Lutjen, Christopher William Moore, David Richard Griffin
  • BREAK-IN SYSTEM FOR GAPPING AND LEAKAGE CONTROL
    Publication number: 20170002677
    Abstract: A blade outer air seal for use in a gas turbine engine having an axis of rotation includes a main body having a mating face configured to face, be positioned radially outward from, and be positioned adjacent to a rotor blade of the gas turbine engine. The blade outer air seal also includes an axial member extending aft from the main body, having a first radial face configured to face a second radial face of an outer diameter platform of a stator of the gas turbine engine, and having a first abradable material coupled to the first radial face.
    Type: Application
    Filed: July 1, 2015
    Publication date: January 5, 2017
    Inventors: PAUL M. LUTJEN, Richard K. Hayford
  • AIRFOIL WITH VARIABLE PROFILE RESPONSIVE TO THERMAL CONDITIONS
    Publication number: 20170002666
    Abstract: An airfoil includes an airfoil body having a first section and a second section that differ in coefficient of thermal expansion by at least 10% and that each have a through-thickness that is 20% or greater than a through-thickness of the airfoil body. The second section is arranged in thermomechanical juxtaposition with the first section such that the first section and the second section cooperatively thermomechanically control a profile of the airfoil body responsive to varying thermal conditions.
    Type: Application
    Filed: September 16, 2016
    Publication date: January 5, 2017
    Inventors: Richard K. Hayford, Paul M. Lutjen
  • ATTACHMENT ARRANGEMENT FOR TURBINE ENGINE COMPONENT
    Publication number: 20160362992
    Abstract: A component for a gas turbine engine according to an example of the present disclosure includes, among other things, a body having circumferential sides between a forward face and an aft face, each of the circumferential sides defining a mate face, an attachment member extending from the body, and a transition member adjacent to the body and the attachment member. The transition member and the body define a slot configured to receive a seal member. The transition member is sloped inwardly from one of the circumferential sides. A method of fabricating a gas turbine engine component is also disclosed.
    Type: Application
    Filed: June 11, 2015
    Publication date: December 15, 2016
    Inventors: Carson A. Roy Thill, Russell E. Keene, Paul M. Lutjen
  • METHOD OF FORMING AN ABRASIVE COATING ON A FAN BLADE TIP
    Publication number: 20160326622
    Abstract: A novel method of depositing grit particles onto a fan blade tip coating is provided. The method enhances grit capture by presenting a softened coating surface for the impinging particles. The softened surface is achieved without high substrate temperatures that could degrade the base metal properties in the fan blade. An auxiliary heat source is used to establish a locally heated and softened surface where the grit deposition takes place. The softened surface greatly increases the probability of grit capture.
    Type: Application
    Filed: May 6, 2015
    Publication date: November 10, 2016
    Inventors: Christopher W. Strock, Paul M. Lutjen
  • SEAL
    Publication number: 20160312634
    Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a substantially radially extending rail and a substantially axially extending leg, such that the seal has a substantially J-shaped cross-section.
    Type: Application
    Filed: April 22, 2015
    Publication date: October 27, 2016
    Inventors: Timothy M. Davis, Paul M. Lutjen, Jeremy Drake
  • 3D NON-AXISYMMETRIC COMBUSTOR LINER
    Publication number: 20160305664
    Abstract: A combustor liner with an input end and an output end includes an annular inner wall and an annular outer wall. At least one of the inner wall and outer wall is three-dimensionally contoured. The inner wall and the outer wall form a combustion chamber with the contours creating alternating expanding and constricting regions inside the chamber causing combustion gases to flow in the circumferential and axial directions.
    Type: Application
    Filed: June 28, 2016
    Publication date: October 20, 2016
    Inventors: Joel H. Wagner, Paul M. Lutjen
  • WRAPPED DOG BONE SEAL
    Publication number: 20160298476
    Abstract: A seal for a gas turbine engine comprises a seal body extending from a first end to a second end. A wrap extends at least partially around the first and second ends of the seal body. A gas turbine engine is also disclosed.
    Type: Application
    Filed: October 24, 2014
    Publication date: October 13, 2016
    Inventors: Paul M. Lutjen, Mark J. Rogers
  • SLIDING SEAL
    Publication number: 20160298474
    Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section, a second seal section, and (in some embodiments) a third seal section. Two or three of the seal sections are uncoupled, which allows the uncoupled seal sections to move relative to one another during relative movement between the two components. One or more spring tabs extend from the second seal section and bias the first and third (or in some embodiments, the first and second) seal sections away from one another.
    Type: Application
    Filed: April 8, 2015
    Publication date: October 13, 2016
    Inventors: Timothy M. Davis, Paul M. Lutjen
  • SEALS FOR GAS TURBINE ENGINE
    Publication number: 20160290150
    Abstract: The present disclosure relates to a first seal for an aircraft blade outer air seal (“BOAS”) comprising a first portion comprising a first channel and a second channel, and a second portion comprising a first projection and a second projection, wherein the first projection slidably couples to the first channel and the second projection slidably couples to the second channel. The first portion and/or the second portion may be coated with a low friction substance. The first portion may be coupled to a vane support and/or a BOAS, and the second portion may be coupled to a first OAS support. The first seal may enable a radial translation of the BOAS in response to an aircraft maneuver.
    Type: Application
    Filed: April 21, 2014
    Publication date: October 6, 2016
    Applicant: UNITED TECHNOLOGIES CORPORATION
    Inventors: Christopher W. Strock, Paul M. Lutjen
  • SLIDING SEAL
    Publication number: 20160265377
    Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a first seal section and an uncoupled second seal section which allows the first and second seal sections to move relative to one another during relative movement between the two components. One or more spring tabs extend from the second seal section and bias the first and second seal sections away from one another.
    Type: Application
    Filed: March 9, 2015
    Publication date: September 15, 2016
    Inventors: Paul M. Lutjen, Jeremy Drake, Timothy M. Davis
  • TURBINE ABRADABLE AIR SEAL SYSTEM
    Publication number: 20160251976
    Abstract: An air seal system for a rotor blade assembly of a gas turbine engine includes a substrate. An optional ceramic interlayer may be disposed on an optional bond coat deposited on the substrate. An erosion resistant thermal barrier coating (E-TBC) layer is disposed on the ceramic interlayer (if present) or on the bond coat, or on the substrate. An abradable layer is disposed on the erosion resistant thermal barrier coating (E-TBC) layer.
    Type: Application
    Filed: September 17, 2014
    Publication date: September 1, 2016
    Inventors: Christopher W. Strock, Paul M. Lutjen, Michael J. Bruskotter
  • SEGMENTED CERAMIC COATING INTERLAYER
    Publication number: 20160251970
    Abstract: A turbine article includes a substrate with a geometric surface feature having a plurality of recesses recessed into the substrate. A ceramic topcoat is disposed over the geometric surface feature. The topcoat includes portions that are separated by faults extending through the topcoat from the geometric surface feature so the topcoat is segmented. A ceramic interlayer is disposed between the topcoat and the geometric surface feature.
    Type: Application
    Filed: September 17, 2014
    Publication date: September 1, 2016
    Inventors: Christopher W. Strock, Paul M. Lutjen
  • GAS TURBINE ENGINE BLADE OUTER AIR SEAL THERMAL CONTROL SYSTEM
    Publication number: 20160237842
    Abstract: A clearance control system for a gas turbine engine is provided. The system includes an inner axial wall that extends between a forward wall and an aft wall. The system also includes an outer axial wall that extends parallel to the inner axial wall to pivotally receive a full hoop thermal control ring.
    Type: Application
    Filed: August 5, 2014
    Publication date: August 18, 2016
    Inventors: Ken F. Blaney, Paul M. Lutjen
  • BLADE OUTER AIR SEAL COOLING SCHEME
    Publication number: 20160208645
    Abstract: A cooling scheme for a blade outer air seal includes a perimeter cooling arrangement configured to convectively cool a perimeter of the blade outer air seal, and a core cooling arrangement configured to cool a central portion of the blade outer air seal through impingement cooling and to provide film cooling to an inner diameter face of the blade outer air seal.
    Type: Application
    Filed: February 22, 2016
    Publication date: July 21, 2016
    Inventors: Susan M. Tholen, Dominic J. Mongillo, Paul M. Lutjen, James N. Knapp, Virginia L. Ross, Jonathan J. Earl, Eric A. Hudson
  • SLIDING SEAL
    Publication number: 20160208632
    Abstract: The present disclosure relates generally to a sliding seal between two components. The sliding seal includes a seal ring including a radially extending base and an axially-extending leg disposed in a seal cavity between first and second components. A retaining ring having a first leg and a second leg defining a cavity therebetween is disposed with a portion of the base and a portion of the first component contained therein, thereby providing loading forces to help the seal ring seal against both the first and second components. One or more rope seals are carried by the seal ring in an embodiment. Other combinations of seal rings, retaining rings, and rope seals are also disclosed.
    Type: Application
    Filed: January 19, 2015
    Publication date: July 21, 2016
    Inventors: Timothy M. Davis, Paul M. Lutjen