Patents by Inventor Chadd D. Engel

Chadd D. Engel 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).

  • Gas turbine engine with fail-safe shaft scheme
    Patent number: 10934844
    Abstract: A gas turbine engine comprises an engine core, a tie bolt, and a fail-safe system. The engine core includes a compressor, a turbine, and a shaft that couples the compressor with the turbine for rotation with the turbine about an axis. The tie bolt locates axially the compressor relative to the turbine. The fail-safe system is configured to transmit torque from the turbine to the compressor through the tie bolt in response to a shaft disconnect event.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: March 2, 2021
    Assignee: Rolls-Royce Corporation
    Inventors: Chadd D. Engel, Bradford J. Riehle
  • Drainage path for a bearing sump in a vertically oriented turbine engine
    Patent number: 10851689
    Abstract: A gas turbine engine in a shutdown mode comprises one or more rotatable shafts, a first oil sump, a second oil sump, and an oil drainage conduit fluidically connecting the first oil sump and the second oil sump. The one or more rotatable shafts are oriented with an axis of rotation less than 90 degrees from vertical. The first oil sump has a selected critical vertical level. The second oil sump is positioned at an elevation lower than the elevation of the first oil sump. The oil drainage conduit effects oil drainage by gravity from the first oil sump to the second oil sump to prevent the level of oil collected in the first oil sump from exceeding the selected critical vertical level.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: December 1, 2020
    Assignee: Rolls-Royce Corporation
    Inventor: Chadd D. Engel
  • DRAINAGE PATH FOR A BEARING SUMP IN A VERTICALLY ORIENTED TURBINE ENGINE
    Publication number: 20190383181
    Abstract: A gas turbine engine in a shutdown mode comprises one or more rotatable shafts, a first oil sump, a second oil sump, and an oil drainage conduit fluidically connecting the first oil sump and the second oil sump. The one or more rotatable shafts are oriented with an axis of rotation less than 90 degrees from vertical. The first oil sump has a selected critical vertical level. The second oil sump is positioned at an elevation lower than the elevation of the first oil sump. The oil drainage conduit effects oil drainage by gravity from the first oil sump to the second oil sump to prevent the level of oil collected in the first oil sump from exceeding the selected critical vertical level.
    Type: Application
    Filed: June 13, 2018
    Publication date: December 19, 2019
    Applicant: Rolls-Royce Corporation
    Inventor: Chadd D. Engel
  • GAS TURBINE ENGINE WITH FAIL-SAFE SHAFT SCHEME
    Publication number: 20190368355
    Abstract: A gas turbine engine comprises an engine core, a tie bolt, and a fail-safe system. The engine core includes a compressor, a turbine, and a shaft that couples the compressor with the turbine for rotation with the turbine about an axis. The tie bolt locates axially the compressor relative to the turbine. The fail-safe system is configured to transmit torque from the turbine to the compressor through the tie bolt in response to a shaft disconnect event.
    Type: Application
    Filed: May 31, 2018
    Publication date: December 5, 2019
    Inventors: Chadd D. Engel, Bradford J. Riehle