Donald M Palmer

US Patent:

6931859, Aug 23, 2005

Filed:

Dec 17, 2003

Appl. No.:

10/739754

Inventors:

Peter L. Morgan - Tempe AZ, US
William J. Howe - Chandler AZ, US
Mark C. Morris - Phoenix AZ, US
Adrian R. Allan - Chandler AZ, US
Donald L. Palmer - Cave Creek AZ, US

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

F02C007/12

US Classification:

60782, 60785, 137494

Abstract:

Cooling air to the blades and disks of a gas turbine may be modulated to provide a variable turbine cooling flow. A bellows may be extended by providing a high pressure compressor discharge flow to an interior of the bellows. The bellows may be compressed when the interior of the bellows communicates with ambient pressure air. The extension/compression of the bellows moves an arm over orifices in a cooling air flow path. The pressure inside of the bellows is metered to move the arm over at least one orifice, thereby restricting cooling air flow when the engine is running at low power. The pressure inside of the bellows is metered to move the arm to uncover all of the slots to provide maximum cooling flow when the engine is running at high power. The resulting variable cooling flow system results in less need for cooling air at low powers, thus reducing engine fuel consumption.

US Patent:

7189059, Mar 13, 2007

Filed:

Oct 27, 2004

Appl. No.:

10/976934

Inventors:

Michael T. Barton - Scottsdale AZ, US
Donald L. Palmer - Cave Creek AZ, US
Mahmoud L. Mansour - Phoenix AZ, US
Don F. Durschmidt - Chandler AZ, US
John A. Gunaraj - Chandler AZ, US
Mark D. Matwey - Phoenix AZ, US
John A. Slovisky - Chandler AZ, US
Nick A. Nolcheff - Phoenix AZ, US

Assignee:

Honeywell International, Inc. - Morristown NJ

International Classification:

F04D 29/44

US Classification:

415186, 415191

Abstract:

A compressor includes an enhanced vaned shroud and is configured such that the flow area ratio is equivalent to that of a conventional, non-vaned shroud. The vaned shroud includes a plurality of airfoils that vary in thickness to obtain desired vibrational mode shapes and natural frequencies. A stiffening ring of limited axial extent is coupled to, and between, the airfoils, and the shroud is manufactured with a section of constant radius.

US Patent:

8122724, Feb 28, 2012

Filed:

Aug 31, 2004

Appl. No.:

10/931502

Inventors:

John A. Slovisky - Chandler AZ, US
Michael T. Barton - Scottsdale AZ, US
John A. Gunaraj - Chandler AZ, US
Mahmoud L. Mansour - Phoenix AZ, US
Donald L. Palmer - Cave Creek AZ, US
Charles J. Paine - Tempe AZ, US
George L. Perrone - Phoenix AZ, US
Nick A. Nolcheff - Chandler AZ, US

Assignee:

Honeywell International, Inc. - Morristown NJ

International Classification:

F02C 1/00

US Classification:

60772, 60240

Abstract:

A compressor includes a diffuser, a recirculation duct, and a flow control valve. The recirculation duct has an inlet in fluid communication with the air outlet of the diffuser, and an outlet in fluid communication with the air inlet of the diffuser. The flow control valve is selectively moveable between open and closed positions, to thereby fluidly couple and isolate, respectively, the recirculation duct inlet and outlets. During operation of the compressor, the flow control valve may be opened, which circulates a portion of the compressed air discharged from the diffuser air outlet back to the diffuser air inlet. The air that is circulated back to the diffuser air inlet reduces the effective area of the diffuser air inlet, thereby increasing the surge margin of the compressor.