Sikorsky Aircraft Corporation

United Technologies Corporation

Blake Almy Moffitt

Brian Ernest Wake

Peter F Lorber

Byung-Young Min

Thomas Gregory Tillman

Steven D Weiner

Timothy James Conti

Claude G Matalanis

Joseph Pantalone, Iii

Daniel Caleb Sargent

Colman D Shattuck

Peter J Germanowski

Colman D Schattuck

A rotorcraft is provided and includes a fuselage. The fuselage includes drag generating portions, a main rotor assembly and an auxiliary propulsor having an expected propulsion efficiency. The auxiliary propulsor is disposed to ingest boundary layer flows and in wake regions associated with the drag generating portions and is provided with a corresponding increase in the expected propulsion efficiency thereof.

Rotorcraft including auxiliary propulsor positioned to ingest boundary layer flow

A rotor blade for a rotary wing aircraft and a tip for the rotor blade. The rotor blade includes a blade root, a blade tip and a blade body that extends from the blade root to the blade tip. The blade tip includes: a continuously swept leading edge, a compound trailing edge, and a continuous anhedral.

Rotor blade tip design for improved hover and cruise performance

A propulsor system for a rotary winged aircraft includes a propeller including having a propeller hub rotatable about a propeller axis and a plurality of propeller blades secured to and extending radially outwardly from the propeller hub. The propeller is oriented on the rotary winged aircraft to provide forward thrust for the rotary winged aircraft when the propeller is rotated about the propeller hub. A plurality of guide vanes non rotatable about the propeller axis are positioned upstream of the plurality of propeller blades. The plurality of guide vanes are positioned to turn an airflow flowing into the plurality or propeller blades, thereby reducing an angle of attack of the plurality of propeller blades relative to the airflow.

Guide vanes for a pusher propeller for rotary wing aircraft

A boundary layer ingesting (BLI) blade having a span is provided and includes a root section connectable to a hub, a tip section disposable at a distance from the hub and having a pitch and a body extending in a spanwise dimension from the root section to the tip section. The root section has a local pitch from the root section to about a 70% span location, which is less than the pitch at the tip section, to thereby reduce local angles of attack in a boundary layer region defined in and around the root section.

Boundary layer ingesting blade

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South Windsor, CT, United States of America

Blake Almy Moffitt