United Technologies Corporation

Hamilton Sundstrand Corporation

Otis Elevator Company

Raytheon Technologies Corporation

Goodrich Corporation

Sikorsky Aircraft Corporation

Rtx Corporation

Ray-Sing Lin

David R Polak

Wayde R Schmidt

Paul Sheedy

Tahany Ibrahim El-Wardany

Anthony C Jones

Marcin Piech

Sameh Dardona

Susanne Marie Opalka

Brian Ernest Wake

Mark Steven Thompson

James C Napier

Peter F Lorber

Robert C Moffitt

Krzysztof Barnat

Scott A Liljenberg

Eric D Gray

Razvan Virgil Florea

Robert Hans Schlinker

Mark B Stucky

David E Parekh

Jacquelynn K M Garofano

Razvam Virgil Florea

Jacquelynn Garofano

In accordance with one aspect of the disclosure, an airfoil is disclosed. The airfoil may include a platform and a blade extending from the platform. The blade may have a root proximate the platform and a tip radially outward from the platform. The root may have a greater thickness than a cross-section at about a quarter-span of the blade or greater.

Airfoil with thickened root and fan and engine incorporating same

A machining process includes providing a cutting tool having a rake face and a flank face; bringing the cutting tool into contact with a metal alloy work piece to form a chip by penetrating the cutting tool into the workpiece; and introducing a nanofluid into a vicinity of the penetration to remove heat and, in some instances, customize the finished surface. The nanofluid includes a mixture of a cryo-liquid and nanoparticles having a maximum size of approximately 0.1 nanometers to approximately 100 nanometers.

Cryogenic machining process using nanofluid

A multilayer structure for deicing an aircraft airfoil component includes an electrically and thermally insulating bottom layer formed in a defined pattern directly on the aircraft airfoil component, an electrothermal middle layer of electrically resistant heater element arrays formed in the defined pattern on the electrically and thermally insulating bottom layer, and a thermally conductive and electrically insulating top layer encapsulating the electrically and thermally insulating bottom layer and the electrothermal middle layer of electrically resistant heater element arrays. The multilayer structure may be directly applied to the airfoil component by direct writing/additive manufacturing, and may be done with the assistance of a multi-axis robot.

Additive manufacturing of conformal deicing and boundary layer control surface for aircraft

An elevator car () comprises: a cab () having a top, a bottom, a left side, a right side, a front, and a back, the front having a door (); and a frame () supporting the cab. The cab comprises a perimeter shroud () protruding above a surface of the top and leaving a well () exposing a central portion of an upper surface () of the top; the perimeter shroud protrudes above the upper surface; and the perimeter shroud has, in vertical section, a curved portion.

Elevator virtual aerodynamic shroud

A system for reducing compressor noise includes a rotor having a plurality of blades. The blades have a nominal geometry characterized by a blade parameter. At least some of the blades are mistuned, such that they differ from the nominal geometry by greater than a manufacturing tolerance in the blade parameter. The blades produce shock waves at a blade passing frequency, and the mistuned blades shift acoustic energy away from the blade passing frequency to multiple lower amplitude tones at other frequencies. The system is configurable to be deployed with an inlet silencer that preferentially absorbs acoustic energy at some of the shifted frequencies.

System for reducing compressor noise

A leading edge slat for multi-element rotor blade applications which provide multiple benefits and provide design direction which has heretofore been unexplored.

Leading edge slat airfoil for multi-element rotor blade airfoils

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Glastonbury, CT, United States of America

Ray-Sing Lin