United Technologies Corporation

Markus W Fritch

Kevin J Klinefelter

Edward F Pietraszkiewicz

James M Koonankeil

Dominic J Mongillo, Jr

Mark F Zelesky

Glenn Levasseur

Gordon Miller Reed

Jeffrey S Beattie

Joseph D Drescher

James Romanelli

Stephen D Doll

Kenneth J Hollman

Karl A Schachtner

Jason Daley

Eric M Pedersen

A method is provided for inspecting at least one aperture of a component with curable material and an inspection system. At least a portion of the curable material is injected into the aperture. The curable material conforms to at least a portion the aperture and subsequently cures and forms a mold of at least a portion of the aperture. The mold is removed from the aperture. At least a portion of a geometry of the mold is compared to at least a portion of a geometry of a reference model for the aperture using the inspection system.

Inspecting one or more apertures of a component using moldable material

A method of machining cooling holes in a component includes the steps of inserting an electro discharge machining guide that houses an electrode into an internal cavity of a component, and machining a cooling hole into a wall of the component with the electrode. A gas turbine engine component includes first and second spaced apart walls providing an internal cavity. The first wall has outer and inner surfaces. The inner surface faces the internal cavity. A cooling hole extends through the first wall from the inner surface to the outer surface. The cooling hole includes entry and exit openings respectively provided in the inner and outer surfaces. The exit opening includes a cross-sectional area that is smaller than a cross-sectional area of the entry opening.

Non-line of sight electro discharge machined part

A method and system are provided for inspecting a plurality of target features arrayed in spaced arrangement on a surface of a target object, such as but not limited to inspection of the location of cooling air holes in the surface of a turbine blade or vane.

On-the-fly dimensional imaging inspection

A method for forming a cooling hole extending from an inlet on a first surface of a wall to an outlet on a second surface of the wall includes forming a diffusing section of the cooling hole, and a trailing edge on the outlet by electrical discharge machining, and forming longitudinal lobes in the diffusing section. The metering section extends from the inlet on a first surface of the wall towards the second surface of the wall. The diffusing section extends from the outlet to one end of a metering section located between the inlet and the outlet. The outlet is substantially linear or convex at the trailing edge and the lobes are separated by longitudinal ridges.

EDM method for multi-lobed cooling hole

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Manchester, CT, United States of America

Markus W Fritch