General Electric Company

Stephen Joseph Waymeyer

Gregg Hunt Wilson

John Alan Manteiga

Joshua Tyler Mook

Michael Robert Notarnicola

Christopher Robert Williams

Steven Douglas Johnson

Nathan Evan McCurdy Gibson

Donald George LaChapelle

David Vickery Parker

Sean Christopher Binion

Thomas Joseph Lipinski

Bradford Alan Tracey

Kenneth Jay Moore

Bruno G Lampsat

Jeffrey John Eschenbach

Srinivasan Venkatasubbu

Christopher Michael Bryant

The present disclosure generally relates to methods for additive manufacturing (AM) for fabricating multi-walled structures. A multi-walled structure includes a first wall having a first surface and a second wall having a second surface facing the first surface to define a passage having a width between the first surface and the second surface in a first direction. The multi-walled structure also includes an enlarged powder removal feature connecting the first wall and the second wall. The enlarged powder removal feature has an inner dimension greater than the width in the first direction and at least one open end in a direction transverse to the first width.

Methods and multi-purpose powder removal features for additive manufacturing

The present disclosure generally relates to separating solid particles from an airflow in a gas turbine engine. A system for separating debris includes a first separation device in fluid communication with an inlet flow path of a compressor and a second separation device in fluid communication with an outlet flow path of the compressor and an inlet flow path of a combustor. The first separation device is adapted to remove coarse particles from the airflow. The second separation device is adapted to remove fine particles from the airflow. The course particles have a larger mean particle diameter than the fine particles.

Multi-station debris separation system

An additively manufactured impingement structure for a component is provided. The control structure includes an outer wall, an inner wall, and an impingement wall positioned between the outer wall and the inner wall. A fluid distribution passageway is defined between the inner wall and the impingement wall and an impingement gap is defined between the impingement wall and the outer wall. A plurality of impingement holes are defined in the impingement wall to provide fluid communication between the fluid distribution passageway and the impingement gap. A flow of cooling or heating fluid may be supplied to the fluid distribution passageway which distributes the flow and impinges it through the impingement holes onto the outer wall to cool or heat the outer wall, respectively.

Additively manufactured component including an impingement structure

A shrouded impeller and a method of additively manufacturing the same are provided. In one example aspect, the shrouded impeller includes a hub and a shroud spaced from the hub. The shrouded impeller also includes a plurality of vanes extending between and connecting the hub and the shroud. The vanes are spaced circumferentially apart from one another. Flow passages are defined between adjacent vanes. In some implementations, the shrouded impeller is additively manufactured. During printing, one or more support structures are formed within and fill a portion of one or more of the flow passages to support the unsupported walls of the shrouded impeller, e.g., the shroud. Further, the support structures are removable from the shrouded impeller, e.g., after the shrouded impeller has been printed.

Support structure and methods for additively manufacturing impellers

A hinge assembly and a method of additively manufacturing the same are provided. The hinge assembly includes a hub defining a body and a first mounting arm and a second mounting arm each projecting from the body. The first mounting arm and the second mounting arm are spaced from one another and define a hinge axis. The hinge assembly also includes a rotatable member or vane rotatably coupled with the hub and positioned between the first mounting arm and the second mounting arm. The rotatable member defines a vane hinge member or hinge member having a first nesting feature shaped complementary to a portion the first mounting arm and a second nesting feature shaped complementary to a portion of the second mounting arm of the hub to nest the hinge member between the first mounting arm and the second mounting arm. The hub and the rotatable member are simultaneously additively manufactured as distinct, but inseparable monolithic components.

Additively manufactured hinge assembly

A bearing assembly including a body defining an outer surface, an inner surface, and an aft surface is generally provided. A first inlet opening is defined through the outer surface in fluid communication with a first internal passage defined by a first internal wall. The first internal passage is in fluid communication with a first outlet opening defined through the inner surface. A second inlet opening is defined through the inner surface in fluid communication with a second internal passage defined by a second internal wall. The second internal passage is in fluid communication with a second outlet opening defined through the aft surface.

Fluid bearing assembly

A turbine frame cooling system for use with a gas turbine engine includes an outer ring defining a cavity and a hub positioned radially inward of the outer ring. The turbine frame cooling system also includes a plurality of circumferentially-spaced first fairings coupled between the outer ring and the hub and a plurality of circumferentially-spaced second fairings coupled between the outer ring and the hub, wherein the first and second fairings are alternatingly positioned about the hub. The turbine frame cooling system also includes a plurality of circumferentially-spaced air scoops coupled to the outer ring. The plurality of air scoops extend into a bypass stream and are configured to channel a bypass air cooling flow into the cavity of the outer ring.

Turbine frame cooling systems and methods of assembly for use in a gas turbine engine

A compressor stator vane assemblage includes a first metal bushing disposed within a bore through the compressor casing and bolted to the casing by externally accessible bolts. A second composite bushing is disposed within the first bushing and receives the spindle of the stator vane. Reduced diameter portions of the spindle project through openings in the first and second bushings. A lever attaches to the spindle portion and is movable to rotate the vane. By removing the bolts, the first and second bushings can be removed from the casing for replacement or rotation of 180.degree. for prolonged service life without disassembly of the casing or removal of the stator vane.

Growing community of inventors

Batavia, OH, United States of America

Stephen Joseph Waymeyer