Patents by Inventor Daniel L. Macumber

Daniel L. Macumber 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).

  • Apparatus for control of stator wakes
    Patent number: 8042483
    Abstract: The invention as disclosed is an apparatus that controls the wake of stator blades on an underwater vehicle. The apparatus comprises one or more stator blades each with a movable trailing edge that when actuated in a controlled manner produces a periodic flapping motion upstream of a propulsion rotor. The controlled periodic flapping of the trailing edge the fills the stator blade wake enough to overcome the stator blade's own drag and fill its wake deficit. This has the effect of reducing the blade rate tonal noise of the propulsion rotor.
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: October 25, 2011
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Stephen A. Huyer, Daniel L. Macumber, Anuradha Annaswamy, David N. Beal
  • Apparatus For Control of Stator Wakes
    Publication number: 20110070783
    Abstract: The invention as disclosed is an apparatus that controls the wake of stator blades on an underwater vehicle. The apparatus comprises one or more stator blades each with a movable trailing edge that when actuated in a controlled manner produces a periodic flapping motion upstream of a propulsion rotor. The controlled periodic flapping of the trailing edge the fills the stator blade wake enough to overcome the stator blade's own drag and fill its wake deficit. This has the effect of reducing the blade rate tonal noise of the propulsion rotor.
    Type: Application
    Filed: September 18, 2009
    Publication date: March 24, 2011
    Inventors: David N. Beal, Stephen A. Huyer, Daniel L. Macumber, Anuradha Annaswamy