Patents by Inventor Hannah C. Lehman

Hannah C. Lehman 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).

  • Patent number: 11094211
    Abstract: A system and method for display of judgmental oversteering taxi data receives a plurality of parameters from aircraft, environmental, position and path sources and determines and displays accurate oversteering data to a pilot. The system enables the pilot to make a variety of taxi turns confident that all aircraft wheels remain on a prepared surface. Aircraft sources include data associated with the aircraft including whether the aircraft has steerable body gear. The environmental parameters include weather, surface friction, and additional data applicable to a turning radius of an aircraft. Position data includes GNSS data to accurately position the aircraft aligned with the taxiways. Path data includes an assigned ATC clearance as well as taxiway data associated with the assigned taxi route. The method compares each of these received variables with stored database information to ensure the aircraft maintains a safe position on the prepared surface during a turn.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: August 17, 2021
    Assignee: Rockwell Collins, Inc.
    Inventors: Felix B. Turcios, Hannah C. Lehman
  • Patent number: 11037455
    Abstract: A method for oversteering an aircraft to perform an optimal turn along a taxiway includes determining a learning environment based on at least one of a taxiway width, a taxiway centerline, and a taxiway radius of curvature, selecting an action for an agent in the environment, determining a reward for the determined environment and the selected action, repeating the steps of selecting the action and determining the reward to determine a model supporting an optimal turn, and using the determined model to at least one of determine control signals for an aircraft and providing guidance to a user to perform the optimal turn along the taxiway. The agent is an aircraft having a minimum turn radius. The action includes a nose wheel displacement and a nose wheel angle. The reward is determined based on a distance between a path of one or more landing gear wheels and a path of the taxiway.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: June 15, 2021
    Assignee: Rockwell Collins, Inc.
    Inventors: Sarah Barber, Hannah C. Lehman, Felix B. Turcios, Tiffany D. Williamson, Bradley R. Thompson, Christopher Truong
  • Publication number: 20200302809
    Abstract: A system and method for display of judgmental oversteering taxi data receives a plurality of parameters from aircraft, environmental, position and path sources and determines and displays accurate oversteering data to a pilot. The system enables the pilot to make a variety of taxi turns confident that all aircraft wheels remain on a prepared surface. Aircraft sources include data associated with the aircraft including whether the aircraft has steerable body gear. The environmental parameters include weather, surface friction, and additional data applicable to a turning radius of an aircraft. Position data includes GNSS data to accurately position the aircraft aligned with the taxiways. Path data includes an assigned ATC clearance as well as taxiway data associated with the assigned taxi route. The method compares each of these received variables with stored database information to ensure the aircraft maintains a safe position on the prepared surface during a turn.
    Type: Application
    Filed: June 11, 2019
    Publication date: September 24, 2020
    Inventors: Felix B. Turcios, Hannah C. Lehman