Patents by Inventor Gen-Sen James Cheng

Gen-Sen James Cheng 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).

  • Spacecraft configuration and attitude steering method for highly inclined orbit (HIO) communications
    Patent number: 6616104
    Abstract: A method for controlling a geosynchronous spacecraft. A yaw axis and a roll axis of the spacecraft are oriented parallel to the earth equatorial plane. A coordinate frame of a payload is rotated about a minus roll axis of the spacecraft at an angle equivalent to an orbit inclination of the spacecraft, thereby maintaining elements of a payload pointing toward a desired region on the earth. A spacecraft attitude is corrected to maintain the payload elements pointing at the desired region on the earth.
    Type: Grant
    Filed: June 24, 2002
    Date of Patent: September 9, 2003
    Assignee: Lockheed Martin Corporation
    Inventors: Gen-Sen James Cheng, Neil Evan Goodzeit