United Technologies Corporation

Raytheon Technologies Corporation

Utc Fuel Cells, LLC

Rtx Corporation

Chris Vargas

Robert Russell Mayer

Daniel B Denis

Richard D Breault

Dilip M Shah

Daniel A Bales

Pantcho P Stoyanov

Evan Christopher Rege

Tommy Skiba

Deliang Yang

Monika D Kinstler

Jung S Yi

Timothy W Patterson

Jeremy P Meyers

Andrew DeBiccari

Billie W Bunting

Jeffrey G Lake

Lawrence J Bregoli

Derek W Anderson

Leonard A Bach

Steven D Jenkel

Carl Busta

Allen Wayne Brown

John F Mullooly

Emily A Dykeman

Stephen P Victor

Timothy A Bekkedahl

Pedro Inigo

David A Bryson

Jeremy Paskind

Jeffrey A Lake

A heat exchanger is provided for a gas turbine engine. This heat exchanger includes a pair of heat exchanger manifolds and a stack of flow channel modules arranged and fluidly coupled between the heat exchanger manifolds. The flow channel modules include a first flow channel module that includes a first heat exchanger section and a second heat exchanger section. The first heat exchanger section includes a base plate, a plurality of flow channel walls and a plurality of heat transfer augmentors. The flow channel walls project out from the base plate to the second heat exchanger section thereby forming a plurality of flow channels between the first heat exchanger section and the second heat exchanger section. The heat transfer augmentors project partially into at least one of the flow channels. A first of the heat transfer augmentors is formed from a different material than the base plate.

Heat exchanger with stacked flow channel modules

An alloy composition includes, by weight: 20% to 23% of Cr; 8% to 10% of Mo; 3.15% to 4.15% of Nb+Ta; 0.25% to 1.5% of B; 0.35% to 1.75% of N; and a balance of Ni.

Nickel alloy composition with boron and nitrogen

A gas turbine engine blade containment system is disclosed. The blade containment system may include a generally cylindrical casing being made of a first material, and a generally cylindrical ring being made of a second material coaxially surrounding the casing, at least some portion of the ring metallurgically bonded to the casing.

Gas turbine engine blade containment system

A method is provided for manufacturing at least a portion of a heat exchanger. During this method, a first heat exchanger section is formed that includes a base and a plurality of protrusions. The forming of the first heat exchanger section includes building up at least one protrusion material on the base to form the protrusions. The first heat exchanger section is attached to a second heat exchanger section. A plurality of flow channels are defined between the first heat exchanger section and the second heat exchanger section.

Manufacturing a heat exchanger using a material buildup process

Aspects are directed to a tribological and creep resistant system configured to operate at temperature in excess of 750&#xb0; C., comprising: a piston seal that includes a nickel base alloy, where the nickel base alloy includes a Ni(Al,X) type precipitated phase in an amount greater than 40% by volume. Aspects are directed to a system comprising: a piston seal that includes a cobalt-based alloy. Aspects are directed to a method comprising: heat treating an ingot of a nickel base alloy that includes coarsening a precipitated phase to facilitate forging or wrought forming the ingot, machining the ingot to include a substantially flat surface, and processing the ingot to generate a piston seal.

Wear resistant piston seal

An airfoil may include an airfoil body, a cover, and a stud. The cover may be disposed on at least one of a suction side and a pressure side of the airfoil body and the stud may extend through the cover and into the airfoil body and the stud may be is joined to the airfoil body and the cover by a friction weld.

Airfoil structure and method of manufacture

Attaching a fastener to a ceramic matrix composite or ceramic body by inserting a portion of the fastener into a compartment of the body, the compartment having a first portion and a second portion, the second portion outboard of and narrower than the first portion; and delivering a fluid into the fastener to expand a portion of the fastener within the blind compartment first portion.

Ceramic and ceramic matrix composite attachment methods and systems

Methods for repairing gas turbine components damaged by corrosion that not only restores the components back to their original dimensions to ensure proper engine operations, but also have the added benefit of mitigating future corrosion attacks thereby extending the useful life of the components.

Corrosion protective coating through cold spray

A fuel cell stack () includes an integrated end plate assembly having a current collector () secured adjacent and end cell () of the stack, a pressure plate () secured adjacent the current collector (), and a backbone () secured within a backbone-support plane () defined within the plate (). Tie rod ends () of the backbone () extend over a gap () defined between the backbone-support plane () and a deflection plane () defined within the pressure plate () so that the tie rod ends deflect within the gap () upon tightening of tie rods (). Deflection of the backbone enables the backbone () to permit limited expansion of the fuel cell stack () during operation, and the backbone () has adequate flexural strength to prohibit expansion of the stack () beyond operating dynamic limits of the stack ().

Fuel cell stack having an integrated end plate assembly

A method of hole defect repair includes removing one or more defects at or near a desired hole shape in a substrate by removing a non-concentric portion of the substrate proximate the desired hole shape, and welding a filler material to the substrate after removing the non-concentric portion of the substrate.

Hole repair technique and apparatus

Each cell of a fuel cell stack is provided, between the anodeand cathodes, with either (a) a permanent shunt () which may be a discrete resistor (), a diode (), a strip of compliant carbon cloth (), or a small amount of conductive carbon black () in the ionomer polymer mixture of which the proton exchange membrane () is formed, or (b) a removeable shunt such as a conductor () which may be rotated into and out of contact with the fuel cell anodes and cathodes, or a conductor () which may be urged into contact by means of a shape memory alloy actuator spring (), which may be heated.

Reducing fuel cell cathode potential during startup and shutdown

The present invention relates to a compliant laminar eddy current sensitivity standard which comprises a sheet of nonconductive, nonmagnetic material having at least one strand of highly conductive metallic material embedded in the sheet and an adhesive layer attached to a surface of the nonconductive, nonmagnetic material to allow the standard to be adhered to a surface of a part to be inspected. A method using the compliant laminar eddy current sensitivity standard is also described.

Growing community of inventors

West Hartford, CT, United States of America

Chris Vargas