Patents by Inventor Howard J. McLean

Howard J. McLean 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).

  • Augmentor liner construction
    Patent number: 4878283
    Abstract: The holes in a liner for an augmentor for a gas turbine engine are reoriented so that cooling air admitted into the gas path is directed tangentially to the liner wall instead of radially and the opening defines a scoop that enhances turbulence adjacent the outer diameter of the liner to improve its heat transfer characteristics, and the method of reorienting said holes.
    Type: Grant
    Filed: August 31, 1987
    Date of Patent: November 7, 1989
    Assignee: United Technologies Corporation
    Inventor: Howard J. McLean
  • Augmentor liner construction
    Patent number: 4718230
    Abstract: The cooling air for the nozzle of an augmentor of a gas turbine engine is maintained uniformly around the circumference to assure the prevention of hot streaks that would be occasioned by the liner "sagging". A separate end piece having judiciously located gaps for directing air over the nozzles, flaps and seals attached to the end of the augmentor duct maintains concentricity during augmentor operation, and affords support to the liner of the duct.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: January 12, 1988
    Assignee: United Technologies Corporation
    Inventors: Fred L. Honeycutt, Jr., Howard J. McLean
  • Turbine rotor assembly
    Patent number: 4685863
    Abstract: Components of a rotor assembly which is capable of long term reliable operation in an axial flow gas turbine engine environment are disclosed. Various construction details enabling good low cycle fatigue life by reducing stress concentrations in the rotor disk are disclosed. Rotor disk and blade features are combined to provide a seal land on the rotor assembly without the need of disk sideplates.
    Type: Grant
    Filed: June 27, 1979
    Date of Patent: August 11, 1987
    Assignee: United Technologies Corporation
    Inventor: Howard J. McLean
  • Augmentor residual fuel drain apparatus
    Patent number: 4423595
    Abstract: An augmentor system for a gas turbine engine is drained of residual fuel after augmentor shutdown by means of a drain conduit connected to the augmentor fuel spray apparatus through a valve which opens upon augmentor shutdown. The outlet to the drain conduit is disposed within the flameholder. A pressure differential causes the residual fuel to flow from the spray apparatus into the drain conduit and thereupon into the flameholder, whereupon it is burned.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: January 3, 1984
    Assignee: United Technologies Corporation
    Inventor: Howard J. McLean