Brian E Flaherty

US Patent:

7552582, Jun 30, 2009

Filed:

Nov 29, 2005

Appl. No.:

11/290745

Inventors:

Chris D. Eick - Phoenix AZ, US
Louie T. Gaines - Phoenix AZ, US
Mitchell J. Laidlaw - Tempe AZ, US
Dwayne M. Benson - Chandler AZ, US
Larry A. Portolese - Granger IN, US
Brian L. Flaherty - Granger IN, US
Wayne T. Pearson - Tucson AZ, US

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

F02C 3/10

US Classification:

60 39163, 60792

Abstract:

A turbofan gas turbine propulsion engine includes a system to transfer power from the low pressure turbine to the high pressure turbine and/or extract additional load from the low pressure turbine during certain turbofan engine operational conditions. The systems include a hydrostatic power transfer system that includes a hydraulic pump and a hydraulic motor coupled to the low pressure and high pressure turbine, respectively. The systems additionally include a mechanical and electrical load shifting/loading sharing systems that use clutches and gear assemblies to share and/or shift load between the turbines.