Patents by Inventor Paul C. Strefling

Paul C. Strefling 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: 10793260
    Abstract: Aircraft and methods and systems for controlling performance of an aircraft. The methods and systems allow the aircraft to meet a performance requirement using a set of aircraft flight data and actuators connected to control surfaces. Performance data for primary and secondary actuators are obtained to select between a primary control law for controlling the primary control surface, a secondary control law for controlling the secondary control surface, and a blended control law that controls the primary and secondary control surfaces together. If the primary control surface cannot meet the aircraft performance requirement using the primary control law, the blended control law is implemented if the primary and secondary control surfaces can be used together to meet the performance requirement; otherwise the secondary control surface is used, using the secondary control law, to meet the aircraft performance requirement.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: October 6, 2020
    Assignee: The Boeing Company
    Inventors: Paul C. Strefling, Michael D. Bills, Bruce Mays Fritchman, John Koon-hung Ho, Kioumars Najmabadi, Edward E. Coleman, Thomas C. Ramsey, Jr., Steven Cook Stone, Paul J. Cline
  • Patent number: 9639089
    Abstract: A gust compensation system is configured to adaptively reduce gust loads exerted into an aircraft. The gust compensation system may include a first sensor proximate to a front of the aircraft. The first sensor is configured to output a first signal. A second sensor may be distally located from the front of the aircraft. The second sensor is configured to output a second signal. A gust signal sub-system is configured to receive the first and second signals and generate a gust signal based on analysis of the first and second signals. The gust signal sub-system outputs the gust signal and may modify a load parameter signal in response to the gust signal exceeding a load alleviation threshold.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: May 2, 2017
    Assignee: The Boeing Company
    Inventors: Khaled Abdel-Motagaly, Rafael E. Caicedo, Christopher D. Dallara, Alexander C. Ho, Kioumars Najmabadi, Tze L. Siu, Paul C. Strefling, Hisako Yamashiro
  • Publication number: 20160357191
    Abstract: A gust compensation system is configured to adaptively reduce gust loads exerted into an aircraft. The gust compensation system may include a first sensor proximate to a front of the aircraft. The first sensor is configured to output a first signal. A second sensor may be distally located from the front of the aircraft. The second sensor is configured to output a second signal. A gust signal sub-system is configured to receive the first and second signals and generate a gust signal based on analysis of the first and second signals. The gust signal sub-system outputs the gust signal and may modify a load parameter signal in response to the gust signal exceeding a load alleviation threshold.
    Type: Application
    Filed: June 4, 2015
    Publication date: December 8, 2016
    Applicant: THE BOEING COMPANY
    Inventors: Khaled Abdel-Motagaly, Rafael E. Caicedo, Christopher D. Dallara, Alexander C. Ho, Kioumars Najmabadi, Tze L. Siu, Paul C. Strefling, Hisako Yamashiro