Meyer Tool, Inc.

Douglas E Key

Beau Easton

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.

Apparatus and method for measurement of the film cooling effect produced by air cooled gas turbine components

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.

Apparatus and method for analyzing relative outward flow characterizations of fabricated features

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.

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Batavia, OH, United States of America

Douglas E Key