Douglas E Key

US Patent:

7388204, Jun 17, 2008

Filed:

Jun 14, 2006

Appl. No.:

11/424084

Inventors:

Douglas E. Key - Cleves OH, US
Beau Easton - Walton KY, US

Assignee:

Meyer Tool, Inc. - Cincinnati OH

International Classification:

G01J 5/02

US Classification:

250340, 25033903

Abstract:

An apparatus and method for characterizing gas flow through features fabricated in a hollow part. A pressurized gas is applied to an interior of the part, and this gas pressure flows outward through features fabricated in the part. At the same time, a stabilizing pressurized gas is applied to an exterior part skin; and the stabilizing gas has a controlled temperature differential from the gas applied to the part interior. An infrared signature of escaping gas and the surrounding part skin is analyzed by a classification method. Analysis of this infrared signature classifies the relative flow rate, size and position of the feature fabricated in the part.

US Patent:

7671338, Mar 2, 2010

Filed:

Feb 21, 2008

Appl. No.:

12/034761

Inventors:

Douglas E. Key - Batavia OH, US

Assignee:

Meyer Tool, Inc. - Cincinnati OH

International Classification:

G01J 5/02

US Classification:

250340, 25033903

Abstract:

An apparatus and method for characterizing gas flow through features fabricated in a hollow part. A pressure regulated cooled gas is applied to an interior of the part to the features fabricated in the part. At the same time, a pressure regulated heated gas is applied to an exterior part skin; and the heated gas has a controlled temperature differential from the pressure regulated cooled gas applied to the part interior. An infrared signature of escaping gas and the surrounding part skin is analyzed by a classification method to identify acceptable and unacceptable fabricated features.

US Patent:

7791025, Sep 7, 2010

Filed:

Apr 22, 2009

Appl. No.:

12/428064

Inventors:

Douglas E. Key - Batavia OH, US

Assignee:

Meyer Tool, Inc. - Cincinnati OH

International Classification:

H01L 25/00
G01J 5/02
G06K 9/00

US Classification:

250332, 25033903, 250340, 382141

Abstract:

An apparatus and method for characterizing gas flow through features fabricated in a hollow part. A pressure regulated cooled gas is applied to an interior of the part to the features fabricated in the part. At the same time, a pressure regulated heated gas is applied to an exterior part skin; and the heated gas has a controlled temperature differential from the pressure regulated cooled gas applied to the part interior. An infrared signature of escaping gas and the surrounding part skin is analyzed by a classification method to identify acceptable and unacceptable fabricated features.

US Patent:

20110119020, May 19, 2011

Filed:

Nov 17, 2010

Appl. No.:

12/948088

Inventors:

Douglas E. Key - Batavia OH, US

Assignee:

MEYER TOOL, INC. - Cincinnati OH

International Classification:

G06F 19/00
G01N 25/00
G01J 5/00

US Classification:

702135, 702136

Abstract:

A method for measurement of a film cooling effect is disclosed. Film cooling is a technique developed to protect gas turbine engine components from the extremely high temperatures created during its operation. A controlled air pressure is ducted into the hollow interior of the component and the mass rate of air flowing through the plurality of film cooling features or openings is measured. A coolant is then injected into the hollow interior of the component and allowed to flow out of a film cooling feature onto the heated outer surface of the component. The resulting infrared signature is a measure of the relative cooling effect generated by the individual film cool feature. The film cooling effect for an individual feature is quantified as the proportion of mass rate of airflow contributed by its relative individual cooling effect. The area, location and shape of the cooling effect are further classified to determine the degree of conformance to its design intent.

US Patent:

20140330534, Nov 6, 2014

Filed:

May 28, 2014

Appl. No.:

14/288484

Inventors:

- Cincinnati OH, US
Douglas E. Key - Batavia OH, US

Assignee:

Meyer Tool, Inc. - Cincinnati OH

International Classification:

G01K 17/08
G01J 5/00

US Classification:

702132

Abstract:

A method for measurement of a film cooling effect is disclosed. Film cooling is a technique developed to protect gas turbine engine components from the extremely high temperatures created during its operation. A controlled air pressure is ducted into the hollow interior of the component and the mass rate of air flowing through the plurality of film cooling features or openings is measured. A coolant is then injected into the hollow interior of the component and allowed to flow out of a film cooling feature onto the heated outer surface of the component. The resulting infrared signature is a measure of the relative cooling effect generated by the individual film cool feature. The film cooling effect for an individual feature is quantified as the proportion of mass rate of airflow contributed by its relative individual cooling effect. The area, location and shape of the cooling effect are further classified to determine the degree of conformance to its design intent.