Patents by Inventor Mitchell L.R. Walker

Mitchell L.R. Walker 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).

  • Publication number: 20130327015
    Abstract: Some embodiments provide a dual use hydrazine propulsion thruster system. The dual use hydrazine propulsion thruster system may include a storage vessel configured to store hydrazine and a chemical thruster configured to provide thrust using the hydrazine. The dual use hydrazine propulsion thruster system may also include a convertor configured to catalytically convert hydrazine to a product comprising ammonia, and an electric thruster configured to provide thrust by ionizing ammonia and accelerating the ionized ammonia out of the electric thruster.
    Type: Application
    Filed: June 12, 2012
    Publication date: December 12, 2013
    Inventors: Pamela Pollet, Logan Todd Williams, Charles Leonard Liotta, Mitchell L.R. Walker, Hillary Anne Huttenhower
  • Publication number: 20130026917
    Abstract: A Hall effect thruster with an annular discharge channel that includes inner and outer sidewall electrodes located at an axial position that is downstream from the anode. The Hall effect thruster may also include shielding elements configured to shield the inner and outer sidewall electrodes from electrons in the annular discharge channel. The shielding elements may be magnetic shielding elements.
    Type: Application
    Filed: July 27, 2012
    Publication date: January 31, 2013
    Inventors: Mitchell L.R. Walker, Kunning Gabriel Xu
  • Publication number: 20110005191
    Abstract: Described herein are improved ion thruster components and ion thrusters made from such components. Further described are methods of making and using the improved ion thruster components and ion thrusters made therefrom. An improved cathode includes an emitter formed from a plurality of vertically aligned carbon nanotubes. An ion thruster can include the improved cathode.
    Type: Application
    Filed: March 5, 2009
    Publication date: January 13, 2011
    Applicant: Georgia Tech Research Corporation
    Inventors: William Judson Ready, Mitchell L.R. Walker, II