Patents by Inventor Paul Robert Tretow

Paul Robert Tretow 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).

  • Core cowl for a turbofan engine
    Patent number: 10094332
    Abstract: A core cowl for a turbofan engine may include a plurality of valleys formed in an outer surface of the core cowl. Each valley may include a convex portion upstream of a concave portion, and may be configured to disrupt a shock cell exiting a fan nozzle of the turbofan engine. Associated methods for reducing turbofan engine noise are also described.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: October 9, 2018
    Assignee: The Boeing Company
    Inventors: David F. Cerra, Paul Robert Tretow, Robert H. Willie, Abhishek Sahay
  • CORE COWL FOR A TURBOFAN ENGINE
    Publication number: 20160061115
    Abstract: A core cowl for a turbofan engine may include a plurality of valleys formed in an outer surface of the core cowl. Each valley may include a convex portion upstream of a concave portion, and may be configured to disrupt a shock cell exiting a fan nozzle of the turbofan engine. Associated methods for reducing turbofan engine noise are also described.
    Type: Application
    Filed: September 3, 2014
    Publication date: March 3, 2016
    Applicant: THE BOEING COMPANY
    Inventors: David F. Cerra, Paul Robert Tretow, Robert H. Willie, Abhishek Sahay