Textron Innovations Inc.

Bell Helicopter Textron Inc.

John J Corrigan, Iii

Frank B Stamps

Richard Erler Rauber

Bryan Kenneth Baskin

Patrick R Tisdale

David Popelka

James Braswell, Jr

Keith Alan Stanney

Thomas C Campbell

Tom Donovan

Mark E Wasikowski

Mark E Dreier

Bob Collins

Ryan Smith

A tiltrotor aircraft includes a rotatable nacelle that supports a rotor assembly and is pivotally attached to the air-craft's fuselage. A wing extension attaches to an outboard section of the nacelle. The wing extension provides additional yaw control during helicopter mode and additional lift during airplane mode. A method for controlling at least a portion of yaw movement includes positioning the rotor assembly in helicopter mode, creating rotor wash with the rotor assembly, and pivotally rotating the wing extension in the rotor wash.

Wing extension control surface

A pitch control system for blades on a rotor of an aircraft has a gimballing rotor hub () and a plurality of step-over arms () connected to the hub and capable of pivoting relative to the hub about a pivot axis. Each of a plurality of pitch links () connects one of the step-over arms () to a flight control system for pivoting the connected step-over arm () about the pivot axis and relative to the hub in response to inputs from the control system. Each of a plurality of step-over links () connects one of the step-over arms () to one of the blades for rotating the associated blade about the pitch axis in response to pivoting of the associated step-over arm.

Step-over blade-pitch control system

Growing community of inventors

Coppell, TX, United States of America

John J Corrigan, Iii