Patents by Inventor Aurelia Ledbetter

Aurelia Ledbetter 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).

  • Ceramic matrix composite rotor blade attachment and method of manufacture therefor
    Patent number: 11143040
    Abstract: A process for manufacturing a composite rotor blade includes manufacturing an oversized root region of a root region of a composite rotor blade; fixturing the CMC blade into a machining fixture at a primary Y and Z axis datum located at an attachment fillet radii of the root region; machining V-notches into the oversized root region to form a Y? and Z? axis datum of a sacrificial datum system in relation to the primary Y and Z axis datum; applying an oversized coating layer over the attachment fillet radii of the root region; fixturing the CMC blade into a machining fixture at the Y? and Z? axis datum of the sacrificial datum system; machining the oversized coating layer to a machined coating layer forming a Y? and Z? axis datum with respect to the Y? and Z? axis datum of the sacrificial datum system; fixturing the CMC blade into a machining fixture at the Y? and Z? axis datum; and machining off the sacrificial datum system removing the V-notches.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: October 12, 2021
    Assignee: Raytheon Technologies Corporation
    Inventors: Michael G. McCaffrey, Karl A. Mentz, Christopher King, Stephen D. Doll, Aurelia Ledbetter
  • CERAMIC MATRIX COMPOSITE ROTOR BLADE ATTACHMENT AND METHOD OF MANUFACTURE THEREFOR
    Publication number: 20210102468
    Abstract: A process for manufacturing a composite rotor blade includes manufacturing an oversized root region of a root region of a composite rotor blade; fixturing the CMC blade into a machining fixture at a primary Y and Z axis datum located at an attachment fillet radii of the root region; machining V-notches into the oversized root region to form a Y? and Z? axis datum of a sacrificial datum system in relation to the primary Y and Z axis datum; applying an oversized coating layer over the attachment fillet radii of the root region; fixturing the CMC blade into a machining fixture at the Y? and Z? axis datum of the sacrificial datum system; machining the oversized coating layer to a machined coating layer forming a Y? and Z? axis datum with respect to the Y? and Z? axis datum of the sacrificial datum system; fixturing the CMC blade into a machining fixture at the Y? and Z? axis datum; and machining off the sacrificial datum system removing the V-notches.
    Type: Application
    Filed: October 2, 2019
    Publication date: April 8, 2021
    Applicant: United Technologies Corporation
    Inventors: Michael G. McCaffrey, Karl A. Mentz, Christopher King, Stephen D. Doll, Aurelia Ledbetter