Patents by Inventor Daniel R. Shapiro

Daniel R. Shapiro 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: 8918235
    Abstract: Technologies are described herein for providing additional yaw control to a multi-engine aircraft experiencing engine thrust asymmetry. A primary flight control system of the aircraft is configured to limit the operational thrust of an operating engine of the aircraft to provide additional yaw control when the aircraft is experiencing thrust asymmetry. The system includes a thrust limit module for calculating the maximum engine thrust limit to be imposed on an operating engine. The maximum engine thrust limit is calculated using inputs corresponding to the sideslip angle and the roll rate of the aircraft. The maximum engine thrust limit is imposed on the operating engine of the aircraft such that the operational thrust generated by the operating engine is limited to the maximum engine thrust limit. By reducing the operational thrust generated by the operating engine, the yawing caused by the thrust asymmetry is likely to be reduced.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: December 23, 2014
    Assignee: The Boeing Company
    Inventors: David P. Eggold, Daniel R. Shapiro, Kyle J. Gardner
  • Patent number: 8423206
    Abstract: A system and a method for varying a maximum roll rate command for ensuring sufficient directional control during an engine-out rolling maneuver of a multi-engine aircraft. For a multi-engine airplane with a roll rate command flight control system, the primary flight control computer is used to vary the maximum commandable roll rate to preserve the desired control margins during roll maneuvers where the rudder is fully deflected to control a thrust asymmetry. When the engine-out yawing moment exceeds a specified value, the system sets a reduced limit on the amount of roll rate the pilot can command.
    Type: Grant
    Filed: March 17, 2011
    Date of Patent: April 16, 2013
    Assignee: The Boeing Company
    Inventors: Daniel R. Shapiro, David Paul Eggold
  • Patent number: 8352099
    Abstract: Technologies are described herein for providing additional yaw control to a multi-engine aircraft experiencing engine thrust asymmetry. A primary flight control system of the aircraft is configured to limit the operational thrust of an operating engine of the aircraft to provide additional yaw control when the aircraft is experiencing thrust asymmetry. The system includes a thrust limit module for calculating the maximum engine thrust limit to be imposed on an operating engine. The maximum engine thrust limit is calculated using inputs corresponding to the sideslip angle and the roll rate of the aircraft. The maximum engine thrust limit is imposed on the operating engine of the aircraft such that the operational thrust generated by the operating engine is limited to the maximum engine thrust limit. By reducing the operational thrust generated by the operating engine, the yawing caused by the thrust asymmetry is likely to be reduced.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: January 8, 2013
    Assignee: The Boeing Company
    Inventors: David P. Eggold, Daniel R. Shapiro, Kyle J. Gardner
  • Publication number: 20120239227
    Abstract: A system and a method for varying a maximum roll rate command for ensuring sufficient directional control during an engine-out rolling maneuver of a multi-engine aircraft. For a multi-engine airplane with a roll rate command flight control system, the primary flight control computer is used to vary the maximum commandable roll rate to preserve the desired control margins during roll maneuvers where the rudder is fully deflected to control a thrust asymmetry. When the engine-out yawing moment exceeds a specified value, the system sets a reduced limit on the amount of roll rate the pilot can command.
    Type: Application
    Filed: March 17, 2011
    Publication date: September 20, 2012
    Applicant: THE BOEING COMPANY
    Inventors: Daniel R. Shapiro, David Paul Eggold