United Technologies Corporation

Raytheon Technologies Corporation

Sikorsky Aircraft Corporation

Hamilton Sundstrand Corporation

Rtx Corporation

Gas Research Institute

Lear Automotive Dearborn, Inc.

Goodrich Corporation

John E Holowczak

Ying She

Michael G McCaffrey

Daniel A Mosher

Thomas J Martin

Harry E Eaton

Paul F Croteau

Matthew B Kennedy

Robert A Barth

Paul Sheedy

Jun Shi

Karl M Prewo

Xia Tang

Jayant Sabnis

Paul Attridge

Philip H McCluskey

Wayde R Schmidt

James Thompson Beals

Zissis A Dardas

Steven J Bullied

Tahany Ibrahim El-Wardany

Haralambos Cordatos

William A Veronesi

Andrzej Ernest Kuczek

Steven A Poteet

William K Tredway

Ram Ranjan

Gregory E Reinhardt

Kathryn S Read

Ellen Y Sun

Ryan C Breneman

Gurkan Gok

Richard Wesley Jackson

John S Linck

Dustin Wayne Davis

Robert Telakowski

Richard Wesley Jackson, Iii

Olivier H Sudre

Matthew E Lynch

Connie E Bird

Willard H Sutton

Neil R Baldwin

Kevin E Green

Tania Bhatia

John J Gangloff, Jr

Bernarr A Jacob

Justin B Alms

Thomas M Yun

Brian M Holley

Thomas Arthur Carstensen

Kathryn L Kirsch

Kenneth David Smith

John J Marcin

James L Lucas

Mary Colby

William C Reinfelder

Steven W Gronda

Martin F Zabielski

Edward A Rothman

David J Bombara

Sarah A Frith

Elliot F Olster

Dustin Frame

Walter J Fallows, Iii

William A Townsend

Gary D Linsey

Joseph V Bak

Blair V Souder

Ingrid H Kerscht

John J Walker

John Joseph Gangloff

John Weaver

Aavo Anto

Connic Bird

Constance Bird

Gary E Sanders

Anthony F Giamei

Jagadeessh Tangudu

Vijay Jagdal

Neil Baldwin

Edward Allen Rothman

A method of manufacturing a heat exchanger core from glass ceramic matrix composite includes placing one or more reinforcing fibers around one or more mandrels into a mold cavity. A glass matrix material infiltrates the one or more reinforcing fibers to produce an infiltrated core and the one or more mandrels is removed to create one or more passages passing through the infiltrated core.

Surface texture enhanced glass-ceramic matrix composite heat exchanger

A method for coating a fiber tow includes moving a fiber tow across a wedge to separate the fiber tow into a plurality of sub-tows, and coating the plurality of sub-tows.

Continuous multiple tow coating reactor

A method of spreading fiber tows includes applying a coupling medium to a surface of a fibrous structure, positioning an ultrasonic probe adjacent to the surface of a fibrous structure, such that a tip of the ultrasonic probe is in contact with the coupling medium, moving at least one of the ultrasonic probe and the fabric structure relative to the other of the ultrasonic probe and the fibrous structure according to a first pattern, and imparting ultrasonic vibration with the ultrasonic probe to the surface of the fibrous structure while moving the ultrasonic probe along the surface of the fibrous structure. Imparting ultrasonic vibration to the surface of the fibrous structure spreads tows of the fibrous structure.

Fabric structure control using ultrasonic probe

A method of forming a part includes forming a glass-ceramic matrix composite material to form a pre-consolidated feedstock sheet with a pre-determined shape. The pre-consolidated feedstock sheet is sectioned into a first piece of pre-consolidated feedstock sheet and a second piece of pre-consolidated feedstock sheet. The first piece of pre-consolidated feedstock sheet and a second piece of pre-consolidated feedstock sheet are assembled with a second piece of pre-consolidated feedstock sheet to form a composite layup. The first piece of pre-consolidated feedstock sheet and the second piece of pre-consolidated feedstock sheet are joined by compressing the composite layup to form a glass-ceramic matrix composite part.

Glass-ceramic matrix composite feedstock and forming

A reactor furnace for coating fiber tow includes an elongate reactor having a fiber tow inlet and a fiber tow outlet; a thermo-chemical reactor section positioned along the elongate reactor; a first microwave source for directing microwave energy along the reactor from a first end of the reactor toward a second end of the reactor; a second microwave source for directing microwave energy along the reactor from the second end of the reactor toward the first end of the reactor; a gas inlet upstream of the thermo-chemical reactor; and a gas outlet downstream of the thermo-chemical reactor.

Alternating and continuous microwave fiber tow coating thermo-chemical reactor furnace

A tow coating reactor system includes a reactor for receiving fiber tow, a wedge situated adjacent the reactor and configured to receive the tow at a tip end, such that as the tow moves across the wedge, the wedge spreads the tow into a plurality of sub-tows.

An environmental barrier coating system for a turbine component, including an environmental barrier layer applied to a turbine component substrate containing silicon; the environmental barrier layer comprising an oxide matrix surrounding a fiber-reinforcement structure and a self-healing phase interspersed throughout the oxide matrix; wherein the fiber-reinforcement structure comprises at least one first fiber bundle oriented along a load bearing stress direction of said turbine component substrate; wherein the fiber-reinforcement structure comprises at least one second fiber bundle oriented orthogonal to the at least one first fiber bundle orientation; wherein the fiber-reinforcement structure comprises at least one third fiber woven between the at least one first fiber bundle and the at least one second fiber bundle.

Fiber-reinforced self-healing environmental barrier coating

An airfoil includes an airfoil section that has an airfoil wall that surrounds a cavity. The airfoil wall includes an exterior monolithic ceramic shell and an interior CMC liner that has CMC plies. An outermost ply of the CMC plies forms tabs that are raised from an underlying ply so as to define a slot. The exterior monolithic ceramic shell includes an underlapping shell piece and an overlapping shell piece. The underlapping shell piece has a portion disposed in the slot and bonded with the tabs. The overlapping shell piece extends over the tabs and is bonded to the tabs. There are channels bounded by adjacent ones of the tabs, the underlapping shell piece, and the overlapping shell piece. Channel orifices through the CMC liner connect the cavity and the channels.

Airfoil with CMC liner and multi-piece monolithic ceramic shell

An airfoil includes an airfoil body that has a trailing edge region. The trailing edge region includes first and second monolithic ceramic exterior walls, a flow discharge passage between the first and second monolithic ceramic exterior walls, a ceramic matrix composite (CMC) liner at least a portion of which is disposed in the flow discharge passage between the first and second monolithic ceramic exterior walls, and an array of pedestals disposed in the flow discharge passage. Each of the flow guides bridges the CMC liner and at least one of the first and second monolithic ceramic exterior walls.

Ceramic airfoil trailing end configuration

An airfoil includes an airfoil section that has an airfoil wall that surrounds a cavity. The airfoil wall includes a first wall section comprised of a monolithic ceramic shell, a second wall section comprised of a CMC liner that is bonded along an interface to an interior side of the monolithic ceramic shell, and a ceramic barrier coating that is bonded to an exterior side of the monolithic ceramic shell. The airfoil wall includes at least one of: inter-section cooling channels that extend along the interface and are bounded by the monolithic ceramic shell and the CMC liner, or intra-section cooling channels that extend within the CMC liner.

Airfoil having internally cooled wall with liner and shell

A blade for a gas turbine engine includes a fiber reinforced ceramic matrix composite structure that provides an airfoil with an exposed exterior airfoil surface and a refractory structure that provides at least an outer portion of a root secured relative to the airfoil.

CMC blade with monolithic ceramic platform and dovetail

A method of removing a core of a cast component includes providing a casting that includes a silica based ceramic core in a temperature controlled closed volume; cycling temperature between a first temperature and a second temperature within the temperature controlled closed volume that repeatedly subjects the silica based ceramic core to a beta-to-alpha cristobalite transition that induces microfractures in the silica based ceramic core; and after the cycling temperature, chemically dissolving the silica based ceramic core from the casting.

Casting core removal through thermal cycling

A reactor for continuously coating tow fibers has an outer tubular member, an inner support member spaced from the outer tubular member, a reactant flowing through a space defined by the outer tubular member and the inner support member, and at least one flow promotor located on an outer surface of the inner support member for directing the reactant towards an inner surface of the outer tubular member. A system and a method for coating tow fibers are also described.

Continuous tow fiber coating reactor

A variable vane system includes an outer platform, an inner casing radially inward from the outer casing and a vane extending between the inner and outer casings defining a vane axis. An inner vane stem is engaged with the inner casing and an outer vane stem is engaged with the outer casing. The system includes a bearing gap defined radially with respect to the vane axis between each of the inner and outer casings and respective vane stems for allowing the vane to rotate about the vane axis for varying angle of attack. The system includes a pressurized air supply inlet in fluid communication with at least one of the bearing gaps to form a stem air bearing to intermittently float at least one of the vane stems for controlled rotation about the vane axis.

Variable vane systems

Growing community of inventors

South Windsor, CT, United States of America

John E Holowczak