Patents by Inventor Daniel Sagan

Daniel Sagan 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).

  • Electric VTOL aircraft with tilting propellers and lifting propellers
    Patent number: 12491993
    Abstract: A vertical take-off or landing (VTOL) aircraft is disclosed that includes a propulsion system comprising at least four tilting propulsion assemblies and two or more lifting propulsion assemblies. Actuation of the tilting mechanisms can convert the aircraft from a hover configuration, in which all propellers produce thrust generally upward to counteract the aircraft's weight, to a forward flight configuration, in which the four or more tilting propellers produce thrust generally in a forward direction parallel to the fuselage to overcome drag in cruise flight and the lifting propellers produce no thrust or a level of thrust generally less than that required in the hover configuration.
    Type: Grant
    Filed: October 16, 2023
    Date of Patent: December 9, 2025
    Assignees: Georgia Tech Research Corporation, United States of America as represented by the Administrator of NASA
    Inventors: Brian Joseph German, Daniel Sagan, Jason R. Welstead, Siena K. S. Bennett
  • ELECTRIC VTOL AIRCRAFT WITH TILTING PROPELLERS AND LIFTING PROPELLERS
    Publication number: 20240124134
    Abstract: A vertical take-off or landing (VTOL) aircraft is disclosed that includes a propulsion system comprising at least four tilting propulsion assemblies and two or more lifting propulsion assemblies. Actuation of the tilting mechanisms can convert the aircraft from a hover configuration, in which all propellers produce thrust generally upward to counteract the aircraft's weight, to a forward flight configuration, in which the four or more tilting propellers produce thrust generally in a forward direction parallel to the fuselage to overcome drag in cruise flight and the lifting propellers produce no thrust or a level of thrust generally less than that required in the hover configuration.
    Type: Application
    Filed: October 16, 2023
    Publication date: April 18, 2024
    Inventors: Brian Joseph German, Daniel Sagan, Jason Welstead, Siena Whiteside