General Electric Company

Hyliion Holdings Corp.

Ge Aviation Systems Limited

Joshua Tyler Mook

Aigbedion Akwara

Michael Robert Notarnicola

Kevin Michael VandeVoorde

Jason Joseph Bellardi

Mohammed El Hacin Sennoun

Mary Kathryn Thompson

Michael Thomas Gansler

Mohamed Osama

Scott Douglas Waun

Bugra Han Ertas

Zachary William Nagel

Michael Anthony Benjamin

Hao Huang

Xiaochuan Jia

John Alan Manteiga

Ramon Martinez

Victor Luis Marrero Ortiz

Sean James Henderson

Christopher Robert Williams

Arvind Rangarajan

David Richard Barnhart

William Joseph Steele

Christina Margaret Vasil

David Scott Simmermon

William Thomas Carter

Kwok Pong Chan

Arunkumar Natarajan

Vadim Bromberg

Mark Eugene Noe

Jonathan David Baldiga

Brandon ALlanson Reynolds

Shawn Michael Pearson

Travis Gene Sands

Anthony Joseph Vinciquerra

Brian Scott McCarthy

William Christopher Alberts

Stephen Joseph Waymeyer

Vipul Kumar Gupta

Mark Richard Shaw

Gregg Hunt Wilson

Jordan Tesorero

Neerav Atul Patel

Thomas Ory Moniz

Jeffrey Donald Clements

Xi Yang

Subhrajit Roychowdhury

Changjie Sun

Nathan Evan McCurdy Gibson

Ananda Barua

John Peter Heyward

Raymond Floyd Martell

Michael Joseph Danowski

Michael G Abbott

Shourya Prakash Otta

Jacob Mayer

Chad Daniel Kleinow

Alex William Ariapad

Peter Joseph Rock, Jr

William Cosmo Murphy

Ting-Yu Tu

Brandon ALIanson Reynolds

Robert Edgar Estes

Gautam Suresh Naik

Victor Bernard Bonneau

Cassidy Charles Shibiya

Janet Mekker

Kevin Michael Van De Voorde

Brandon Allanson Reynolds

Michael George Abbott

An irradiation device for additively manufacturing three-dimensional objects may include a beam generation device configured to generate an energy beam, an optical modulator including a micromirror array disposed downstream from the beam generation device, and a focusing lens assembly disposed downstream from the optical modulator. The micromirror array may include a plurality of micromirror elements configured to reflect a corresponding plurality of beam segment of the energy beam along a beam path incident upon the focusing lens assembly. The focusing lens assembly may include one or more lenses configured to focus the plurality of beam segments such that for respective ones of a plurality of modulation groups including a subset of micromirror elements, a corresponding subset of beam segments are focused to at least partially overlap with one another at a combination zone corresponding to the respective modulation group.

Irradiation devices with optical modulators for additively manufacturing three-dimensional objects

A linear electric machine includes a shaft and at least one piston assembly operably coupled with the shaft. The piston assembly includes a piston, a piston body, and an expansion chamber. The piston body defines a dome structure at the expansion chamber. The piston is a domed piston corresponding to the dome structure. The linear electric machine also includes a heater body positioned at an outer end of the expansion chamber adjacent to the dome structure. The piston body further defines an exterior surface corresponding to a shape of the dome structure. The exterior surface includes a plurality of surface features protruding therefrom and is arranged between the heater body and the dome structure. The plurality of surface features decrease a heat load across the exterior surface of the piston body.

Piston body for an engine having surface features for interacting with boundary layer

A system for energy conversion including a closed cycle engine containing a volume of working fluid is provided. The engine includes a double-ended piston assembly including a pair of pistons coupled to a connection member. An expansion chamber is separated from a compression chamber by the piston. The engine defines an outer end and an inner end relative to a lateral extension of the piston assembly. A heater body is positioned thermally proximal to the expansion chamber and thermally distal to the compression chamber, and the heater body is positioned at the outer end of the engine. A load device is operably coupled to the piston assembly at the inner end of the engine. The load device is positioned between the pair of pistons of the piston assembly.

System and apparatus for energy conversion

A system for energy conversion, the system including a closed cycle engine containing a volume of working fluid, the engine comprising a first chamber defining an expansion chamber and a second chamber defining a compression chamber each separated by a piston attached to a connection member of a piston assembly, and wherein the engine comprises a heater body in thermal communication with the first chamber, and further wherein the engine comprises a cold side heat exchanger in thermal communication with the second chamber, and wherein a third chamber is defined within the piston, wherein the third chamber is in selective flow communication with the first chamber, the second chamber, or both.

Engine apparatus and method for operation

Embodiments of the present disclosure are directed to additive manufacturing apparatuses, cleaning stations incorporated therein, and methods of cleaning using the cleaning stations.

Cleaning fluids for use in additive manufacturing apparatuses and methods for monitoring status and performance of the same

A method of pressurizing a closed-cycle engine includes performing a non-steady state operation in which a working fluid flows to or from a pressurized tank: i) to or from a plurality of sumps defined by respective ones of a plurality of cylinder-piston assemblies of the closed-cycle engine; or ii) to or from one or more air bearings associated with each one of the plurality of the cylinder-piston assemblies; or iii) both and performing, before and/or after performing the non-steady state operation, a steady-state operation in which the working fluid flows through the plurality of sumps and the one or more air bearings along a steady-state loop that is fluidly decoupled from the pressurized tank.

Pressure control system for a closed-cycle engine

A fuel nozzle apparatus includes: an outer body having an exterior surface and a plurality of openings in the exterior surface. An inner body is disposed inside the outer body, cooperating with the outer body to define an annular space. A main injection ring is disposed in the annular space and includes an array of fuel posts extending outward therefrom, each fuel post including a perimeter wall defining a lateral surface and a recessed floor. Each fuel post is aligned with one of the openings and separated from the opening by a perimeter gap defined between the opening and the lateral surface. A main fuel gallery extends within the main injection ring. The main injection ring includes plurality of main fuel orifices, each main fuel orifice communicating with the main fuel gallery and extending through one of the fuel posts.

Fuel nozzle structure for air assist injection

A piston apparatus includes a plurality of piston assemblies respectively having a first piston body and a first piston disposed within a first volume defined by the first piston body, a second piston body and a second piston disposed within a second volume defined by the second piston body, and a connection member coupled to the first piston and the second piston. The first and second volume respectively include an expansion chamber and a compression chamber defined by opposite sides of the corresponding piston. The respective expansion chambers fluidly communicate with a corresponding compression chamber of another one of the piston assemblies. The first volume of a first piston assembly fluidly communicates with the first volume and the second volume of a second piston assembly, and the first volume of a third piston assembly fluidly communicate with the first volume and the second volume of the second piston assembly.

The present disclosure generally relates to monolithic superstructures for supporting a rotating shaft coupled to a rotor relative to a stator. An integral superstructure supports the rotating component. The superstructure includes a bearing portion that contacts the shaft. A stator portion, is spaced a critical dimension radially outward, from the rotor. A first annular transfer portion extends axially forward from the bearing to the stator portion. A second annular transfer portion extends axially aft from the stator portion to a mounting flange. The mounting flange connects the superstructure to a frame. The superstructure maintains a critical dimension between the rotor and the stator as the temperature of the superstructure increases. The rotor may be a compressor impeller in a gas turbine engine and the stator may be an aero component that transfers air into a combustor.

Integral superstructure for load path optimization

A constant density heat exchanger and method of operating are provided. The constant density heat exchanger includes a housing extending between a first end and a second end and defining a chamber having an inlet and an outlet. A first plate is positioned at the first end of the housing and rotatable about an axis of rotation such that the first plate selectively allows a working fluid to flow into the inlet of the chamber. A second plate is positioned at the second end of the housing and rotatable about the axis of rotation such that the second plate selectively allows the working fluid to flow out of the outlet of the chamber. The first plate and the second plate are rotatable about the axis of rotation so as to hold a volume of the working fluid at constant density as a heat source imparts thermal energy thereto.

Constant density heat exchanger and system for energy conversion

A method, medium, and system to obtain an assignment of one of a plurality of different additive manufacturing (AM) print parameter sets to each of a plurality of 3D volume elements forming a representation of the model of the part; define a plurality of groupings based on margin parameter values associated with the model of the part; assign a print parameter set to each grouping; automatically assign each of the plurality of print parameter sets to a laser of a multi-laser AM device; save a record of the determined print parameter sets to laser assignments; and transmit the record of the determined print parameter sets to laser assignments to an AM controller to control the multi-laser AM device to generate the part based on the model of the part and the determined print parameter sets to laser assignments, the generated part to be built in a single build.

Assignment of multiple print parameter sets in additive manufacturing

A method, medium, and system including determining a material property value to assign to each of the plurality of 3D volume elements, wherein the material property values assigned to the plurality of 3D volume elements are classified into a predetermined number of bins that correspond to a plurality of different additive manufacturing (AM) print parameter sets, generating a plurality of transfer functions to determine relationships between the material property values assigned to the plurality of 3D volume elements and a plurality of desired AM print parameter sets, automatically determining, based on the plurality of transfer functions, an assignment of one of the plurality of different AM print parameter sets to each of the plurality of 3D volume elements, and validating the determined assignments of the plurality of different AM print parameter sets for the plurality of 3D volume elements based on the plurality of transfer functions.

Autozoning of additive manufacturing print parameters

A monolithic heat exchanger body for inputting heat to a closed-cycle engine includes heating walls and heat sink, such as heat transfer regions. The heating walls are configured and arranged in an array of spirals or spiral arcs relative to a longitudinal axis of an inlet plenum. Adjacent portions of the heating walls respectively define corresponding heating fluid pathways fluidly communicating with the inlet plenum. At least a portion of the heat sink is disposed about at least a portion of the monolithic heat exchanger body. The heat sink includes working-fluid bodies including working-fluid pathways that have a heat transfer relationship with the heating fluid pathways. Respective ones of the heat transfer regions have a heat transfer relationship with a corresponding semiannular portion of the heating fluid pathways. Respective ones of the heat transfer regions include working-fluid pathways fluidly communicating between a heat input region and a heat extraction region.

Monolithic heat-exchanger bodies

Growing community of inventors

Loveland, OH, United States of America

Joshua Tyler Mook