Textron Innovations Inc.

Bell Helicopter Textron Inc.

Ron Measom

Frank B Stamps

Tricia Hiros

Paul K Oldroyd

Patrick R Tisdale

Walter West Riley

David A Elliott

Charles J Kilmain

Tom Campbell

Sherman S Lin

Richard Erler Rauber

Paul Branson Sherrill

Mark Adam Wiinikka

David Popelka

James Braswell, Jr

Thomas C Campbell

Keith Alan Stanney

Timothy Kent Ledbetter

David Allen Haynie

Pat Tisdale

Stanley G Sadler

Mark E Wasikowski

Joseph J Zierer

Michael J Southerland

Charles L Baskin

Tim Ledbetter

Ronnie Lee Martin

James L Braswell

David A Popelka

James Lee Braswell

Bob Mullins

Jim Harse

D J Reddy

Richard Barbour

Jim Braswell

Frank Bradley Stamps

Ronnie L Martin

Stanley Gene Sadler

Walter Riley

Paul Sherrill

Keith Stanney

Mark Wasikowski

Timothy K Ledbetter

In one particular embodiment, a method for making a fiber-reinforced, composite article having an internal passageway includes providing a layup tool, fiber placing a base layup onto the layup tool, and generating a groove in the base layup. The method further includes placing a mandrel in the groove, fiber placing a top layup onto the base layup and the mandrel, curing the base layup and the top layup, and removing the mandrel from the base layup and the top layup. In another particular embodiment, the mandrel is replaced with a non-removable tube.

Method of making a composite article having an internal passageway

A method of making a rotor yoke includes preparing a cured composite rotor yoke preform on a single-sided curing tool and machining at least one portion of the cured rotor yoke preform to form a rotor yoke. In one embodiment, preparing the cured composite rotor yoke is accomplished by applying successive layers of uncured polymeric composite material to a single-sided tool in a configuration to produce an uncured rotor yoke preform; disposing a semi-rigid caul to an untooled side of the uncured rotor yoke preform; enclosing the uncured rotor yoke preform and the semi-rigid caul by substantially hermetically sealing a vacuum bag to the tool; substantially evacuating a volume defined by the vacuum bag and the tool of air; and heating the uncured rotor yoke preform, sometimes under pressure, to form the cured composite rotor yoke preform.

Method of making a rotor yoke and rotor yoke thereof

An assembly for providing flexure to a blade of a rotary blade system includes an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween. At least one of the upper and lower yoke surfaces has a layer of cushioning material positioned thereon and secured thereto. An alternate embodiment includes an assembly for providing flexure to a blade of a rotary blade system, including, an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween and directly contacting the support plates wherein one of the curved surfaces is a non-circular arc that does not form part of the circumference of a circle. Another alternate embodiment includes a similar assembly having a twist-shank type of yoke for providing rotation of attached blades about their respective pitch axes.

Assembly for providing flexure to blade system

An assembly for providing flexure to a blade of a rotary blade system, the assembly including an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween. At least one of the upper and lower yoke surfaces having a layer of cushioning material positioned thereon and secured thereto. The layer of cushioning material extending along and following the general contour of yoke surface, and the layer of cushioning material directly contacting a support plate. Another embodiment is an assembly for providing flexure to a blade of a rotary blade system, including, an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween and directly contacting the support plates wherein one of the curved surfaces is a non-circular arc that does not form part of the circumference of a circle.

Growing community of inventors

Hurst, TX, United States of America

Ron Measom