Abstract: A method for disposing blocking material within an interior of a component for blocking a beam of radiation from a laser during a laser drilling operation, the method including forming one of a multiple of apertures formed via a first process and forming the remainder of the multiple of apertures formed via a laser drilling process. A component for a gas turbine engine includes a surface with at least one of a multiple of apertures formed via a first process, the at least one of the multiple of apertures formed via the first process in communication with a cavity, a remainder of the multiple of apertures formed via a laser drilling process, the remainder of the multiple of apertures in communication with the cavity.

Abstract: 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.

Abstract: An airfoil body includes an airfoil wall defined between an internal cavity surface and an external airfoil surface. A pad extends from the internal cavity surface. A cooling hole extends from the external airfoil surface, through the airfoil wall and through the pad for fluid communication through the airfoil wall.

Abstract: 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.

Abstract: An airfoil has an of internal cooling channel, and cooling holes extending from the internal cooling channel to an outer skin. Air is injected into the cooling channel, and then into an inlet of the cooling hole. The exit of the air from an outlet of the cooling hole at the outer skin is monitored to determine whether the outlet is blocked. A location of the inlet of the cooling hole is determined by utilizing the determined location of the outlet, in combination with a known angle through which the cooling hole extends.

Abstract: One exemplary embodiment of this disclosure relates to a method of inspecting a component of a gas turbine engine. The method includes performing a through-hole inspection, and determining a location of the plurality of holes from results of the through-hole inspection.

Abstract: A method of non-destructively inspecting an article includes scanning an article to produce a computerized three-dimensional representation of an internal feature of the article. A measurement characteristic of the internal feature is then generated from a plurality of cross-sections through the computerized three-dimensional representation of the internal feature. The measurement characteristic is then used to determine whether the internal feature meets a design criterion.

Abstract: A method for disposing blocking material within an interior of a component for blocking a beam of radiation from a laser during a laser drilling operation, the method including forming one of a multiple of apertures formed via a first process and forming the remainder of the multiple of apertures formed via a laser drilling process. A component for a gas turbine engine includes a surface with at least one of a multiple of apertures formed via a first process, the at least one of the multiple of apertures formed via the first process in communication with a cavity, a remainder of the multiple of apertures formed via a laser drilling process, the remainder of the multiple of apertures in communication with the cavity.

Abstract: 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.

Abstract: An airfoil body includes an airfoil wall defined between an internal cavity surface and an external airfoil surface. A pad extends from the internal cavity surface. A cooling hole extends from the external airfoil surface, through the airfoil wall and through the pad for fluid communication through the airfoil wall.

Abstract: A cooling circuit for a gas turbine engine includes a gas turbine engine component having at least one internal cooling cavity defined by an internal wall surface and a plurality of turbulent flow features extending outwardly from the internal wall surface. Each turbulent flow feature is spaced apart from an adjacent turbulent flow feature in a first direction. At least one trench extends through the turbulent flow features in the first direction, and a plurality of cooling holes are formed within the at least one trench. A gas turbine engine and a method of forming a cooling circuit for a gas turbine engine component are also disclosed.

Abstract: An airfoil has an of internal cooling channel, and cooling holes extending from the internal cooling channel to an outer skin. Air is injected into the cooling channel, and then into an inlet of the cooling hole. The exit of the air from an outlet of the cooling hole at the outer skin is monitored to determine whether the outlet is blocked. A location of the inlet of the cooling hole is determined by utilizing the determined location of the outlet, in combination with a known angle through which the cooling hole extends.

Abstract: A method of non-destructively inspecting an article includes scanning an article to produce a computerized three-dimensional representation of an internal feature of the article. A measurement characteristic of the internal feature is then generated from a plurality of cross-sections through the computerized three-dimensional representation of the internal feature. The measurement characteristic is then used to determine whether the internal feature meets a design criterion.

Abstract: An electro discharge machining system includes a guide having first and second portions that are non-colinear with respect to one another. A consumable electrode is housed within the guide and configured to drill cooling holes in a component. A controller is programmed to position the guide and electrode to a desired position with respect to the component. An electro discharge machining guide includes first and second portions that are non-colinear with respect to one another and that include a passage configured to receive an electrode.

Abstract: 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.

Abstract: An apparatus and method for machining apertures into a conductive workpiece is disclosed. The apparatus has a tank capable of holding a dielectric fluid, and a fixture for holding the workpiece in the tank. An electric discharge machine with an electrode, a power supply connected to the electrode that produces machining pulses for electric discharge machining through the workpiece, and a controller for regulating the power supply and electrode position is also part of the apparatus. Finally, the apparatus has a pressure transducer connected to the fixture, and a process controller in communication with the electric discharge machine controller and pressure transducer.

Abstract: An apparatus and method for machining apertures into a conductive workpiece is disclosed. The apparatus has a tank capable of holding a dielectric fluid, and a fixture for holding the workpiece in the tank. An electric discharge machine with an electrode, a power supply connected to the electrode that produces machining pulses for electric discharge machining through the workpiece, and a controller for regulating the power supply and electrode position is also part of the apparatus. Finally, the apparatus has a pressure transducer connected to the fixture, and a process controller in communication with the electric discharge machine controller and pressure transducer.

Abstract: An electrical discharge machining electrode includes a body and one or more shaped teeth. The one or more shaped teeth of the body have a diffuser section and a metering section in electrical communication therewith. The body and the teeth may be formed by a process of photochemically etching a substrate made from an electrically conductive material.

Abstract: An electrical discharge machining electrode includes a body and one or more shaped teeth. The one or more shaped teeth of the body have a diffuser section and a metering section in electrical communication therewith. The body and the teeth may be formed by a process of photochemically etching a substrate made from an electrically conductive material.

Abstract: An inspection system for locating multiple features on an exterior of an object includes a fixture, a camera, a computer and software. The fixture secures the object and includes a plurality of nest points for mating with specific positions on the exterior of the object, and a reference point located at a specific position relative to the nest points and within a best-plane of the object. The camera is positioned normal to the best-plane of the object and obtains video imaging of a plurality of the features and the reference point. The computer communicates with the camera and collects the video imaging. The software determines the actual parameters of the features relative to the reference point based on the video imaging.