David T Matthews

US Patent:

6565312, May 20, 2003

Filed:

Dec 19, 2001

Appl. No.:

10/029451

Inventors:

Mark D. Horn - Granada Hills CA
James Lobitz - Oak Park CA
David R. Matthews - Simi Valley CA
Luis A. Rosales - Moorpark CA
Kenneth M. Sprouse - Northridge CA
Allan Von Arx - Northridge CA

Assignee:

The Boeing Company - Seattle WA

International Classification:

F01D 518

US Classification:

415115, 415114, 415116, 416 96 R, 416 97 R

Abstract:

A cooled turbine blade (either a rotor blade or a stationary vane) comprises a blade structural member whose primary function is to withstand the various loads exerted on the blade and maintain structural integrity of the blade, and a heat-transfer sheath that surrounds the outer surface of the structural member. A plurality of coolant passages are formed between the structural member and the heat-transfer sheath. Thus, when coolant is passed through the coolant passages, the heat transferred to the sheath from the hot gases passing through the turbine is in turn transferred to the coolant, which is then removed from the blade, thereby cooling the blade.

US Patent:

7007486, Mar 7, 2006

Filed:

Mar 26, 2003

Appl. No.:

10/397412

Inventors:

Kenneth M. Sprouse - Northridge CA, US
Alan V. von Arx - Northridge CA, US
David R. Matthews - Simi Valley CA, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

F02C 7/22
F02C 7/26

US Classification:

60776, 737758

Abstract:

A counter-flow system for use in a turbine for selecting various mixtures of fluids for use with the system. The system may be used for a combustor for a gas powered turbine which employs a heat exchanger to combust a fuel without the emission of undesired chemical species. A gas powered turbine requires expanding gases to power the turbine blades. Fuel is combusted to produce the required gases. An oxidizer is introduced into the counter-flow system in a first direction before a first portion of fuel is introduced into the oxidizer. The fuel and oxidizer mixture is then flowed through a second pathway wherein the fuel and oxidizer mixture obtains a selected amount of thermal energy. Moreover, in a second pathway an equivalence ratio of the fuel and oxidizer mixture may be altered from the original fuel and oxidizer mixture.

US Patent:

7017329, Mar 28, 2006

Filed:

Oct 10, 2003

Appl. No.:

10/682943

Inventors:

Shahram Farhangi - Woodland Hills CA, US
David R Matthews - Simi Valley CA, US

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

F23R 3/30

US Classification:

60 3911, 60737

Abstract:

A combustor assembly for a gas powered turbine includes a premix section to mix a first selected volume of fuel with a selected oxidizer. The premix section includes an injector plate that includes a porosity according to selected characteristics, such as pore size, pore density, pore distribution, and other selected characteristics. Therefore, the fuel may be provided through the porous plate to the premix area and a selected uniform flux.

US Patent:

7117674, Oct 10, 2006

Filed:

Dec 5, 2003

Appl. No.:

10/729595

Inventors:

Kenneth M Sprouse - Northridge CA, US
Shahram Farhangi - Woodland Hills CA, US
Michael P Moriarty - Simi Valley CA, US
David R Matthews - Simi Valley CA, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

F23R 3/40

US Classification:

60723

Abstract:

A combustor for a gas powered turbine which employs a heat exchanger and a catalyst to combust a fuel without the emission of undesired chemical species. A gas powered turbine requires expanding gases to power the turbine blades. Fuel is combusted to produce the required gases. A catalyst is employed to lower the combustion temperature of the fuel. The catalyst is placed on a set of tubes in the heat exchanger such that a portion of the thermal energy may be transferred to the air before it engages the catalyst. After encountering the catalyst, the combusted fuel increases the temperature of the air to an auto-ignition temperature so that no other ignition source is needed to combust additional fuel.

US Patent:

7117676, Oct 10, 2006

Filed:

Mar 26, 2003

Appl. No.:

10/397881

Inventors:

Shahram Farhangi - Woodland Hills CA, US
Kenneth M Sprouse - Northridge CA, US
David R Matthews - Simi Valley CA, US

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

F02C 7/08

US Classification:

60736, 60737, 60776

Abstract:

A premixer for a combustor to entrain a selected volume of fuel in an oxidizer to be combusted to heat the oxidizer. The combustor is for a gas powered turbine which employs the hypergolic or high energy air stream which will allow a fuel to be combusted in the absence of an additional ignition source. A heat exchanger and a catalyst combusts a first portion of fuel in air without the production of undesired chemical species. The catalyst is employed to lower the combustion temperature of the fuel to substantially eliminate selected chemical species. The fuel premixed in the air then encounters the catalyst and the fuel is combusted to increase the temperature of the air to an auto-ignition temperature so that no other ignition source is needed to combust additional fuel added later.

US Patent:

7127899, Oct 31, 2006

Filed:

Feb 26, 2004

Appl. No.:

10/787430

Inventors:

Kenneth M. Sprouse - Northridge CA, US
Shahram Farhangi - Woodland Hills CA, US
Mark D. Horn - Granada Hills CA, US
David R. Matthews - Simi Valley CA, US

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

F23R 3/30

US Classification:

60776, 60737

Abstract:

An air/fuel pre-mixer for a gas turbine combustor and a method of pre-mixing air and fuel for a combustor are provided. In one embodiment the pre-mixer includes a first annular premix fuel manifold disposed upstream of the combustor and an annular member concentric with the first premix fuel manifold. Together the annular premix fuel manifold and the annular member define a first venturi shaped air/fuel pre-mix volume between them that has a throat. At or upstream from the throat, the first premix fuel manifold has a plurality of pores whereby the fuel is injected from the first premix fuel manifold to mix with air in the first pre-mix volume. In another embodiment, the annular member is an outer wall, whereas in yet another embodiment, the annular member is a second premix fuel manifold.

US Patent:

7140184, Nov 28, 2006

Filed:

Dec 5, 2003

Appl. No.:

10/729679

Inventors:

Kenneth M Sprouse - Northridge CA, US
Shahram Farhangi - Woodland Hills CA, US
Alan V von Arx - Northridge CA, US
David R Matthews - Simi Valley CA, US

Assignee:

United Technologies Corporation - Hartford CT

International Classification:

F02C 1/00
B05B 1/26

US Classification:

60743, 239524

Abstract:

A combustor and injector system to inject a selected fuel into a combustor of a gas powered turbine. Generally, the injector is able to inject a selected fuel into a stream of an oxidizer to substantially mix the fuel with the oxidizer stream before any of the fuel in the fuel fan reaches an auto ignition temperature. Therefore the fuel may be substantially combusted at once and without any substantial hot spots.

US Patent:

7303597, Dec 4, 2007

Filed:

Oct 15, 2002

Appl. No.:

10/271950

Inventors:

Kenneth Michael Sprouse - Northridge CA, US
David R Matthews - Simi Valley CA, US
Albert E Stewart - Sylmar CA, US

Assignee:

Pratt & Whitney Rocketdyne, Inc. - Canoga Park CA

International Classification:

C01B 3/36

US Classification:

48197R, 406 99, 406197

Abstract:

A system for substantially continuously providing a solid material, for example pulverized coal, to a pressurized container. The system provides the solid material to a first container of a first pressure elevated above an initial pressure of the solid material. Generally, a screw conveyor augmented with a jet port is used to move the material where the jet port provides a gas to provide a make-up volume of the solid material. The system also provides the material to a second high pressure container after the material has been formed into a slurry. Therefore, the solid material may be substantially continuously provided in a system to a high pressure container.