Patents by Inventor Sean S. Stroud

Sean S. Stroud 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).

  • Rockets, methods of rocket control and methods of rocket evaluation utilizing pressure compensation
    Patent number: 9677504
    Abstract: Rockets, rocket motors, methods of controlling a rocket and methods of evaluating a rocket design are disclosed. In some embodiments, a method of controlling a rocket may include measuring a combustion chamber pressure, calculating a logarithm of the measured combustion chamber pressure, and computing the difference between the logarithm of the measured combustion chamber pressure and the logarithm of a reference combustion chamber pressure value to generate an error signal. The method may further include filtering the error signal to generate a compensated signal in the logarithm domain, and exponentiating of the compensated signal in the logarithm domain to provide a compensated signal in the physical domain.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: June 13, 2017
    Assignee: ORBITAL ATK, INC.
    Inventors: Sean S. Stroud, Michael J. Piovoso
  • ROCKETS, METHODS OF ROCKET CONTROL AND METHODS OF ROCKET EVALUATION UTILIZING PRESSURE COMPENSATION
    Publication number: 20110277446
    Abstract: Rockets, rocket motors, methods of controlling a rocket and methods of evaluating a rocket design are disclosed. In some embodiments, a method of controlling a rocket may include measuring a combustion chamber pressure, calculating a logarithm of the measured combustion chamber pressure, and computing the difference between the logarithm of the measured combustion chamber pressure and the logarithm of a reference combustion chamber pressure value to generate an error signal. The method may further include filtering the error signal to generate a compensated signal in the logarithm domain, and exponentiating of the compensated signal in the logarithm domain to provide a compensated signal in the physical domain.
    Type: Application
    Filed: May 11, 2010
    Publication date: November 17, 2011
    Applicant: ALLIANT TECHSYSTEMS INC.
    Inventors: Sean S. Stroud, Michael J. Piovoso