United Technologies Corporation

Raytheon Technologies Corporation

Goodrich Corporation

Rtx Corporation

Hamilton Sundstrand Corporation

Carrier Corporation

Utc Fuel Cells, LLC

Other

Raytheon Company

Delavan Inc.

Utc Power Corporation

Collins Engine Nozzles, Inc.

Sikorsky Aircraft Corporation

Ying She

Zissis A Dardas

Aaron T Nardi

James Thompson Beals

Thomas P Filburn

Haralambos Cordatos

John E Holowczak

John A Sharon

Kathryn S Read

Michael A Klecka

Xia Tang

Brian St Rock

Thomas Henry Vanderspurt

Richard Wesley Jackson, Iii

Wayde R Schmidt

Rajiv Ranjan

Lawrence A Binek

Tahany Ibrahim El-Wardany

Andrew Joseph Lazur

Sameh Dardona

Richard Wesley Jackson

Olivier H Sudre

Susanne Marie Opalka

Sean C Emerson

James Warren Rudolph

Vijay Narayan Jagdale

John S Linck

Vishnu Mohan Sishtla

Paul Sheedy

Zaffir A Chaudhry

Parmesh Verma

Jon E Sobanski

Changsheng Guo

Andrzej Ernest Kuczek

Matthew Robert Pearson

Scott Alan Eastman

Eric Surawski

Gajawalli V Srinivasan

Naveen G Menon

Rhonda R Willigan

Randolph Carlton Mcgee

Mary Colby

Lesia V Protsailo

Peter A T Cocks

Kenneth David Smith

Gavin Charles Richards

Rakesh Radhakrishnan

William P May

Nitin Garg

Xiaodan Cai

Bruce Leon Laube

Fangxia Feng

Caroline A Newman

Miriam P Leffler

Fabienne Wijzen

Ulf J Jonsson

Daniel V Viens

Richard L Gentilman

Gurkan Gok

Craig R Walker

Biswajit Mitra

Raja Kountanya

Tianli Zhu

Robert A Barth

Alyson T Burdette

Steven W Gronda

John J Gangloff, Jr

Timothy Dugan Davis

Sarah A Frith

Douglas F Long

Stephanie Silberstein Bell

Cristal Chan

James D MacLeod

Shubhro Ghosh

Nikunj Gupta

Salvatore Saitta

Anais Espinal

Subhrajit Chakraborty

John J Walker

Kenneth Petroski

Sergio Calabrese

Afshin Bazshushtari

Peter At Cocks

Disclosed herein is a chemical vapor infiltration method including flowing ceramic precursors through a preform and depositing a matrix material on the preform at a first gas infiltration pressure, increasing the gas filtration pressure to a second gas infiltration pressure, and lowering the gas infiltration pressure to a third gas infiltration pressure which is intermediate to the first and second gas infiltration pressures.

CVI matrix densification process

Disclosed is a coated ceramic fiber including a silicon carbide coating layer adjacent to the ceramic fiber and a silicon dioxide coating layer adjacent to the silicon carbide coating layer, wherein the silicon dioxide coating layer forms micro cracks after a crystal structure transformation. The coated ceramic fiber may be included in a composite material having a ceramic matrix.

Microstructured fiber interface coatings for composites

Disclosed is a coated ceramic fiber including a zirconium interface coating layer deposited on the ceramic fiber, a zirconium dioxide interface coating layer adjacent to the zirconium interface coating layer, and an additional interface coating layer adjacent to the zirconium dioxide interface coating layer, wherein zirconium dioxide interface coating layer forms micro cracks after a crystal structure transformation. The coated ceramic fiber may be included in a composite material having a ceramic matrix.

A method for forming ceramic matrix composite (CMC) component includes forming a fiber preform, positioning the fiber preform into a chemical vapor infiltration reactor chamber, and densifying the fiber preform. Densification includes infiltrating the fiber preform with a first gas comprising precursors of silicon carbide and infiltrating the fiber preform with a second gas comprising a first rare earth element, wherein the steps of infiltrating the fiber preform with the first gas and infiltrating the fiber preform with the second gas are conducted simultaneously to produce a first rare earth-doped silicon carbide matrix in a first region of the component.

Doped silicon carbide ceramic matrix composite

A method for forming a self-healing ceramic matrix composite (CMC) component includes depositing a first self-healing particulate material in a first region of a CMC preform of the CMC component and depositing a second self-healing particulate material having a different chemical composition than the first self-healing particulate material in a second region of the CMC preform distinct from the first region.

Self-healing matrix for a ceramic composite

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 tooling assembly suitable for use in infiltrating a fibrous preform comprises a first perforated plate having an outer surface and an oppositely disposed inner surface defining a plate thickness therebetween, and a plurality of tapered holes extending through the thickness. Each hole of the plurality of tapered holes has a first diameter at the outer surface and a second diameter at the inner surface, and the first diameter is greater than the second diameter.

Ceramic matrix composite tooling for chemical vapor infiltration process

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 nanocomposite optical ceramic (NCOC) material includes a plurality of coated (core-shell) nanoparticles having nanoparticles of a first material coated with a coating of a second material. The first material and the second material are mutually insoluble and each have a transmissivity of at least 80% for an intended wavelength. The first material and the second material have a difference in index of refraction of less than 25%. The first material and second material have grins with a diameter of less than 1/20the intended wavelength. The coating of the second material on the nanoparticles of the first material is up to 50 nm thick. The NCOC contains no more than 0.01% voids per unit volume.

Coated (core-shell) nanoparticles for nanocomposite optical ceramics

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 tooling assembly suitable for use in infiltrating a fibrous preform comprises an outer tooling fixture with a plurality of outer sidewalls defining an inner volume, each of the plurality of outer sidewalls having an outer wall thickness, and a window extending through the outer wall thickness of at least one outer sidewall of the plurality of sidewalls. The tooling assembly further comprises an inner tooling fixture positioned within the inner volume of the outer tooling fixture, the inner tooling having a plurality of inner sidewalls, each of the plurality of inner sidewalls having an inner wall thickness, and a plurality of holes extending through the inner wall thickness of at least one inner sidewall of the plurality of inner sidewalls. The at least one outer sidewall is positioned adjacent the at least one inner sidewall such that the window overlaps with at least a subset of the plurality of holes in the at least one inner sidewall.

Minimization of chemical vapor infiltration tooling hole length through windows

A powder cleaning system can include a fluidized bed reactor configured to retain powder and fluidize the powder to remove adsorbate and/or other contaminants from the powder, and one or more gas sources configured to be in selective fluid communication with the fluidized bed reactor via at least one inlet line to selectively provide an inlet flow having one or more gases to the fluidized bed reactor to fluidize the powder with the one or more gases within the fluidized bed reactor. The system can include at least one outlet line in fluid communication with the fluidized bed reactor and configured to allow removal of outlet flow which comprises the adsorbate and/or other contaminants from the fluidized bed reactor.

Powder cleaning systems and methods

A system for monitoring fuel additives on board a vehicle includes a fuel line carrying fuel from a fuel source to an engine; a fuel additive sensor configured to measure concentration of additives in fuel at a point along the fuel line; a fuel additive dispenser connected in parallel to the fuel line; at least one flow control device for controlling an amount of flow from the fuel line into the fuel additive dispenser; and a controller configured to receive input from the fuel additive sensor and to control the flow control device to adjust the amount of the flow from the fuel line into the fuel additive dispenser.

System and method for monitoring fuel additives

Disclosed is a refrigeration system comprising: condenser; an expansion valve; a first conduit fluidly connecting the condenser and the expansion valve to define a first fluid segment through which a medium is transported when the system is active; and a separator assembly, operably disposed in the first fluid segment, configured to remove non-condensable gas from the medium when the system is active.

System and method for removing noncondensing gas from refrigeration system

Growing community of inventors

East Hartford, CT, United States of America

Ying She