Patents by Inventor Ronald Lorenz Kisor

Ronald Lorenz Kisor 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).

  • System and Method for Protection Against Vortex Ring State
    Publication number: 20230150656
    Abstract: A system and method for protecting a rotorcraft from entering a vortex ring state, the method including monitoring a vertical speed of a rotorcraft, comparing the vertical speed to a vertical speed safety threshold, and performing vortex ring state (VRS) avoidance in response to the vertical speed exceeding the vertical speed safety threshold. The performing the VRS avoidance includes determining a power margin available from one or more engines of the rotorcraft, limiting the vertical speed of the rotorcraft in response to the power margin exceeding a threshold, and increasing a forward airspeed of the rotorcraft in response to the power margin not exceeding the threshold.
    Type: Application
    Filed: January 11, 2023
    Publication date: May 18, 2023
    Inventors: Albert Gerard Brand, Ronald Lorenz Kisor
  • System and method for protection against vortex ring state
    Patent number: 11554855
    Abstract: A system and method for protecting a rotorcraft from entering a vortex ring state, the method including monitoring a vertical speed of a rotorcraft, comparing the vertical speed to a vertical speed safety threshold, and performing vortex ring state (VRS) avoidance in response to the vertical speed exceeding the vertical speed safety threshold. The performing the VRS avoidance includes determining a power margin available from one or more engines of the rotorcraft, limiting the vertical speed of the rotorcraft in response to the power margin exceeding a threshold, and increasing a forward airspeed of the rotorcraft in response to the power margin not exceeding the threshold.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: January 17, 2023
    Assignee: TEXTRON INNOVATIONS INC.
    Inventors: Albert Gerard Brand, Ronald Lorenz Kisor
  • System and Method for Protection Against Vortex Ring State
    Publication number: 20210197962
    Abstract: A system and method for protecting a rotorcraft from entering a vortex ring state, the method including monitoring a vertical speed of a rotorcraft, comparing the vertical speed to a vertical speed safety threshold, and performing vortex ring state (VRS) avoidance in response to the vertical speed exceeding the vertical speed safety threshold. The performing the VRS avoidance includes determining a power margin available from one or more engines of the rotorcraft, limiting the vertical speed of the rotorcraft in response to the power margin exceeding a threshold, and increasing a forward airspeed of the rotorcraft in response to the power margin not exceeding the threshold.
    Type: Application
    Filed: February 13, 2020
    Publication date: July 1, 2021
    Inventors: Albert Gerard Brand, Ronald Lorenz Kisor
  • System and method for limiting cyclic control inputs
    Patent number: 8662439
    Abstract: A control system having a first loop configured to provide a longitudinal blowback value of a rotor blade during flight and a second loop associated with the first loop, the second loop being configured to provide a design maximum total flapping value and a lateral flapping value. A method includes calculating a flight control limit from the design maximum total flapping value and the lateral flapping value. An upper longitudinal cyclic control limit is calculated by adding the flight control limit to the longitudinal blowback value. A lower longitudinal cyclic control limit is calculated by subtracting the flight control limit from the longitudinal blowback value.
    Type: Grant
    Filed: July 24, 2013
    Date of Patent: March 4, 2014
    Assignee: Textron Innovations Inc.
    Inventors: Robert L. Fortenbaugh, Jose Manuel Rodriguez, Ronald Lorenz Kisor, Robert Blyth
  • SYSTEM AND METHOD FOR LIMITING CYCLIC CONTROL INPUTS
    Publication number: 20130334361
    Abstract: A control system having a first loop configured to provide a longitudinal blowback value of a rotor blade during flight and a second loop associated with the first loop, the second loop being configured to provide a design maximum total flapping value and a lateral flapping value. A method includes calculating a flight control limit from the design maximum total flapping value and the lateral flapping value. An upper longitudinal cyclic control limit is calculated by adding the flight control limit to the longitudinal blowback value. A lower longitudinal cyclic control limit is calculated by subtracting the flight control limit from the longitudinal blowback value.
    Type: Application
    Filed: July 24, 2013
    Publication date: December 19, 2013
    Applicant: BELL HELICOPTER TEXTRON INC.
    Inventors: Robert L. Fortenbaugh, Jose Manuel Rodriguez, Ronald Lorenz Kisor, Robert Blyth
  • System and method for limiting cyclic control inputs
    Patent number: 8496199
    Abstract: A control system having a first loop configured to provide a longitudinal blowback value of a rotor blade during flight and a second loop associated with the first loop, the second loop being configured to provide a design maximum total flapping value and a lateral flapping value. A method includes calculating a flight control limit from the design maximum total flapping value and the lateral flapping value. An upper longitudinal cyclic control limit is calculated by adding the flight control limit to the longitudinal blowback value. A lower longitudinal cyclic control limit is calculated by subtracting the flight control limit from the longitudinal blowback value.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: July 30, 2013
    Assignee: Textron Innovations Inc.
    Inventors: Robert L. Fortenbaugh, Jose Manuel Rodriguez, Ronald Lorenz Kisor, Robert Blyth