Patents by Inventor Mary M. Billman

Mary M. Billman 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).

  • Active flow control for transonic flight
    Patent number: 9908617
    Abstract: An air vehicle includes an airfoil designed for transonic flight. The airfoil has a region of supersonic flow during transonic flight. A surface of the airfoil has upstream and downstream orifices at or within the region. The air vehicle further includes an active flow control system for controlling air vehicle motion during transonic flight by controlling flow through the orifices to alter strength and location of a shock wave in the region. The system creates an aerodynamic imbalance to move the shock wave.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: March 6, 2018
    Assignee: The Boeing Company
    Inventors: Ahmed A. Hassan, Casey L. Madsen, Garrett M Billman, Mary M. Billman
  • ACTIVE FLOW CONTROL FOR TRANSONIC FLIGHT
    Publication number: 20110309201
    Abstract: An air vehicle includes an airfoil designed for transonic flight. The airfoil has a region of supersonic flow during transonic flight. A surface of the airfoil has upstream and downstream orifices at or within the region. The air vehicle further includes an active flow control system for controlling air vehicle motion during transonic flight by controlling flow through the orifices to alter strength and location of a shock wave in the region. The system creates an aerodynamic imbalance to move the shock wave.
    Type: Application
    Filed: May 23, 2011
    Publication date: December 22, 2011
    Applicant: THE BOEING COMPANY
    Inventors: Ahmed A. Hassan, Casey L. Madsen, Garrett M. Billman, Mary M. Billman