Patents by Inventor David Apps

David Apps 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 health monitoring
    Patent number: 9830747
    Abstract: A method of monitoring the health of a gas turbine engine of at least a pair of engines of an aircraft for example. The method comprising the steps of: a) obtaining steady state readings from predetermined sensors on the engines; b) calculate a percentage difference of the steady state readings from a unique engine linear synthesis model for each engine; c) compare the difference between the percentage differences for each engine and d) where this difference exceeds a predetermined value issue a warning as to an engine health problem. Maintenance of the engine can therefore be advantageously scheduled.
    Type: Grant
    Filed: May 14, 2008
    Date of Patent: November 28, 2017
    Assignee: ROLLS-ROYCE plc
    Inventors: David Apps, Timothy M. Smith
  • ENGINE HEALTH MONITORING
    Publication number: 20100138132
    Abstract: A method of monitoring the health of a gas turbine engine of at least a pair of engines of an aircraft for example. The method comprising the steps of: a) obtaining steady state readings from predetermined sensors on the engines; b) calculate a percentage difference of the steady state readings from a unique engine linear synthesis model for each engine; c) compare the difference between the percentage differences for each engine and d) where this difference exceeds a predetermined value issue a warning as to an engine health problem. Maintenance of the engine can therefore be advantageously scheduled.
    Type: Application
    Filed: May 14, 2008
    Publication date: June 3, 2010
    Applicant: Rolls-Royce Plc
    Inventors: David Apps, Timothy M. Smith