Patents by Inventor Paul J. R. Strange

Paul J. R. Strange 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).

  • ENGINE NOISE
    Publication number: 20100170261
    Abstract: In order to provide noise suppression, bumps or undulations are provided on a nozzle surface in order to vary the convergent-divergent ratio between that surface and an opposed nozzle surface. By such an approach, a circumferential variation in the shock cell pattern is created and the flow is deflected so as to enhance turbulent mixing thereby suppressing noise.
    Type: Application
    Filed: March 3, 2006
    Publication date: July 8, 2010
    Applicant: Rolls-Royce plc
    Inventors: Rory D. Stieger, Kevin M. Britchford, Paul J. R. Strange
  • Engine noise
    Patent number: 7735601
    Abstract: In order to provide noise suppression, bumps or undulations are provided on a nozzle surface in order to vary the convergent-divergent ratio between that surface and an opposed nozzle surface. By such an approach, a circumferential variation in the shock cell pattern is created and the flow is deflected so as to enhance turbulent mixing thereby suppressing noise.
    Type: Grant
    Filed: March 3, 2006
    Date of Patent: June 15, 2010
    Assignee: Rolls-Royce PLC
    Inventors: Rory D. Stieger, Kevin M. Britchford, Paul J. R. Strange
  • Suppression of part of the noise from a gas turbine engine
    Publication number: 20040088967
    Abstract: A method and a system (10) for exhausting gas via a nozzle (19, 21) of a gas turbine engine, for example. The system (10) comprises a nozzle (19, 21) comprising a nozzle body portion (32, 33, 74) defining a nozzle exit (42, 43), characterised in that the nozzle body portion (32, 33, 74) comprises fluid injection means (60), positioned upstream of the exit (42, 43) relative to a fluid flow (F1, F2) created by the operation of the system, for injecting fluid (68) upstream of the exit (42, 43).
    Type: Application
    Filed: November 3, 2003
    Publication date: May 13, 2004
    Inventors: John R. Webster, Paul J. R Strange