Patents by Inventor Christian X. Campbell, Jr.

Christian X. Campbell, Jr. 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).

  • Turbine airfoil with ambient cooling system
    Patent number: 9359902
    Abstract: A turbine airfoil usable in a turbine engine and having at least one ambient air cooling system is disclosed. At least a portion of the cooling system may include one or more cooling channels configured to receive ambient air at about atmospheric pressure. The ambient air cooling system may have a tip static pressure to ambient pressure ratio of at least 0.5, and in at least one embodiment, may include a tip static pressure to ambient pressure ratio of between about 0.5 and about 3.0. The cooling system may also be configured such that an under root slot chamber in the root is large to minimize supply air velocity. One or more cooling channels of the ambient air cooling system may terminate at an outlet at the tip such that the outlet is aligned with inner surfaces forming the at least one cooling channel in the airfoil to facilitate high mass flow.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: June 7, 2016
    Assignee: Siemens Energy, Inc.
    Inventors: Christian X. Campbell, Jr., John J. Marra, Jan H. Marsh
  • TURBINE AIRFOIL WITH AMBIENT COOLING SYSTEM
    Publication number: 20150003999
    Abstract: A turbine airfoil usable in a turbine engine and having at least one ambient air cooling system is disclosed. At least a portion of the cooling system may include one or more cooling channels configured to receive ambient air at about atmospheric pressure. The ambient air cooling system may have a tip static pressure to ambient pressure ratio of at least 0.5, and in at least one embodiment, may include a tip static pressure to ambient pressure ratio of between about 0.5 and about 3.0. The cooling system may also be configured such that an under root slot chamber in the root is large to minimize supply air velocity. One or more cooling channels of the ambient air cooling system may terminate at an outlet at the tip such that the outlet is aligned with inner surfaces forming the at least one cooling channel in the airfoil to facilitate high mass flow.
    Type: Application
    Filed: June 28, 2013
    Publication date: January 1, 2015
    Inventors: Christian X. Campbell, Jr., John J. Marra, Jan H. Marsh