Patents by Inventor Christopher T. SHEAF

Christopher T. SHEAF 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).

  • Nacelle
    Patent number: 10392971
    Abstract: A nacelle for a turbofan gas turbine engine, having in flow series an intake lip, a diffuser and a fan casing. The diffuser has, in flow series, a main section and a recessed section adjacent to the fan casing. A transition region, such as a step, slope or curve, is provided between the main section and the recessed section. In some arrangements the transition region may be configured to promote flow separation and the formation of a separation bubble in the recessed section.
    Type: Grant
    Filed: November 25, 2016
    Date of Patent: August 27, 2019
    Assignee: ROLLS-ROYCE plc
    Inventors: Angus R Smith, Christopher T Sheaf, David G MacManus, Robert E Christie
  • NACELLE
    Publication number: 20170167295
    Abstract: A nacelle for a turbofan gas turbine engine, having in flow series an intake lip, a diffuser and a fan casing. The diffuser has, in flow series, a main section and a recessed section adjacent to the fan casing. A transition region, such as a step, slope or curve, is provided between the main section and the recessed section. In some arrangements the transition region may be configured to promote flow separation and the formation of a separation bubble in the recessed section.
    Type: Application
    Filed: November 25, 2016
    Publication date: June 15, 2017
    Applicant: ROLLS-ROYCE, PLC
    Inventors: Angus R. SMITH, Christopher T. SHEAF, David G. MACMANUS