Patents by Inventor Mark Laderman

Mark Laderman 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).

  • Method of starting turbine engine from low engine speed
    Patent number: 7861534
    Abstract: A method of starting a turbine engine at a first engine speed value which is lower than a second engine speed value designed for a normal engine starting operation, comprises varying a fuel flow into a combustor of the engine to start the engine in repeatedly alternating speed acceleration and deceleration cycles in order to create an engine speed augmentation in each of the speed acceleration and deceleration cycles, thereby achieving the second engine speed value while preventing the engine from being overheated, and then beginning the normal engine starting operation.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: January 4, 2011
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Andrej Terlecki, Graham Bridges, Christopher Day, Mark Laderman
  • METHOD OF STARTING TURBINE ENGINE FROM LOW ENGINE SPEED
    Publication number: 20080271461
    Abstract: A method of starting a turbine engine at a first engine speed value which is lower than a second engine speed value designed for a normal engine starting operation, comprises varying a fuel flow into a combustor of the engine to start the engine in repeatedly alternating speed acceleration and deceleration cycles in order to create an engine speed augmentation in each of the speed acceleration and deceleration cycles, thereby achieving the second engine speed value while preventing the engine from being overheated, and then beginning the normal engine starting operation
    Type: Application
    Filed: May 3, 2007
    Publication date: November 6, 2008
    Inventors: Andrej Terlecki, Graham Bridges, Christopher Day, Mark Laderman