Patents Assigned to Mechanical Dynamics and Analysis, LLC
  • Publication number: 20240060420
    Abstract: A turbine blade includes a root, tip, and airfoil. The turbine blade defines a serpentine interior passage having first through third legs, and first and second junctions. The first leg receives pressurized gas from a supply channel of the root. The first leg extends radially and the first junction connects it to the second leg proximate the tip. The second leg extends radially between the first and second junctions. The second junction connects the second and third legs. The third leg extends radially toward the tip. The tip defines cooling apertures open through a pressure side thereof. The cooling apertures include a forward aperture with a forward end opening into the first junction and an aftward end opening through the pressure side surface of the tip at a location that is radially outward of the third leg and axially aftward of at least a portion of the third leg.
    Type: Application
    Filed: November 1, 2023
    Publication date: February 22, 2024
    Applicant: Mechanical Dynamics and Analysis LLC
    Inventors: Leissner F. POTH, III, Sanjay S. HINGORANI, Bensy SAMUEL
  • Patent number: 11840940
    Abstract: A turbine blade includes a blade tip defining pressure side cooling apertures. The turbine blade defines a serpentine cooling passage having a first, second, and third legs, and first and second junction portions. The first leg extends radially and is connected to the second leg by the first junction portion proximate the blade tip. The second leg extends radially between the first and second junction portions. The second junction portion connects the second leg to the third leg which extends radially toward the blade tip and is connected to a trailing edge cooling aperture to exhaust the gas to an exterior of the turbine blade. The turbine blade defines a plenum connected to the first junction portion. At least one tip cooling aperture connects to the plenum and is radially outward of the third leg and axially aftward of at least a portion of the third leg.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: December 12, 2023
    Assignee: Mechanical Dynamics and Analysis LLC
    Inventors: Leissner F. Poth, III, Sanjay S. Hingorani, Bensy Samuel
  • Publication number: 20220290568
    Abstract: A turbine blade includes a blade tip defining pressure side cooling apertures. The turbine blade defines a serpentine cooling passage having a first, second, and third legs, and first and second junction portions. The first leg extends radially and is connected to the second leg by the first junction portion proximate the blade tip. The second leg extends radially between the first and second junction portions. The second junction portion connects the second leg to the third leg which extends radially toward the blade tip and is connected to a trailing edge cooling aperture to exhaust the gas to an exterior of the turbine blade. The turbine blade defines a plenum connected to the first junction portion. At least one tip cooling aperture connects to the plenum and is radially outward of the third leg and axially aftward of at least a portion of the third leg.
    Type: Application
    Filed: March 9, 2021
    Publication date: September 15, 2022
    Applicant: Mechanical Dynamics and Analysis LLC
    Inventors: Leissner F. POTH, III, Sanjay S. HINGORANI, Bensy SAMUEL
  • Patent number: 7690111
    Abstract: A method for repairing a rotor of a turbine includes providing a rotor having a groove portion defined by a circumferential portion of the rotor. The circumferential portion of the rotor is removed to create an opening to provide access to the groove such that the opening, immediately adjacent the groove, is narrower than the groove. A guide block may be extended into a receiving slot separating a first protruding surface from a second protruding surface of the rotor such that a weld area slot of the guide block extends over at least a portion of the opening. The opening may be welded adjacent the guide block to close at least a portion of the opening.
    Type: Grant
    Filed: April 14, 2005
    Date of Patent: April 6, 2010
    Assignee: Mechanical Dynamics and Analysis, LLC
    Inventors: James Harvey Coffey, Andrew Otto Ruehs
  • Publication number: 20060230612
    Abstract: A method for repairing a rotor of a turbine includes providing a rotor having a groove portion defined by a circumferential portion of the rotor. The circumferential portion of the rotor is removed to create an opening to provide access to the groove such that the opening, immediately adjacent the groove, is narrower than the groove. A guide block may be extended into a receiving slot separating a first protruding surface from a second protruding surface of the rotor such that a weld area slot of the guide block extends over at least a portion of the opening. The opening may be welded adjacent the guide block to close at least a portion of the opening.
    Type: Application
    Filed: April 14, 2005
    Publication date: October 19, 2006
    Applicant: Mechanical Dynamics and Analysis, LLC
    Inventors: James Coffey, Andrew Ruehs
  • Publication number: 20020074156
    Abstract: A high voltage bushing comprising an insulator enclosing a conductor and a mounting flange slid over the insulator. The outer surface of the insulator defines a flange seat for contacting one end of the mounting flange. A gasket may be positioned on the flange seat between the insulator and mounting flange to form a gas tight seal to prevent the escape of hydrogen. A layer of epoxy attaches the remaining portion of the mounting flange to the insulator. The insulator of the high voltage bushing is made from a composite material rather than porcelain as is traditionally used, while a high temperature asphalt material is also used.
    Type: Application
    Filed: December 14, 2001
    Publication date: June 20, 2002
    Applicant: Mechanical Dynamics and Analysis, LLC
    Inventor: Raymond L. Forster