Helicopter turn coordination and heading hold mode control

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United States of America Patent

PATENT NO 5299759
SERIAL NO

07891624

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A mode control (25) controls a helicopter flight control system (21) between a heading hold mode and a turn coordination mode according to switching patterns resembling the natural response of an expert pilot to flight conditions. Helicopter operating parameters (31,30) are detected (31,29) and each parameter's detected value is converted from a crisp value to a fuzzy input (100). A new mode fuzzy output is provided by applying a compositional rule of inference (105) across each fuzzy input and a composite mode selection rule base (110). The new mode fuzzy output is converted into a crisp value (112) which is used to determine whether the flight control system operates in the heading hold mode or the turn coordination mode.

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Patent Owner(s)

Patent OwnerAddress
UNITED TECHNOLOGY CORPORATION A DE CORPHARTFORD CT

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hetzler, David H Media, PA 1 16
Sherman, Porter D Fairfield, CT 1 16
Weisser, Jr Paul South Windsor, CT 1 16
Wright, Stuart C Woodbridge, CT 31 403

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