Swashplateless active blade pitch control with a mechanical delta-3 restraint having an instantaneous blade pitch-flap coupling response

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United States of America Patent

PATENT NO 9476312
APP PUB NO 20140271203A1
SERIAL NO

13841390

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An apparatus comprising a hub configured to couple to a mast, a grip configured to couple to the hub and a rotor blade, a pitch actuator coupled to the grip and configured to change a pitch of the rotor blade relative to the mast, and a delta-3 restraint coupled to the pitch actuator, wherein the delta-3 restraint is fixed relative to the mast. An apparatus comprising a hub configured to couple to a mast, a grip configured to couple to the hub and a rotor blade, a pitch actuator coupled to the grip and configured to change a pitch of the rotor blade relative to the mast, and a delta-3 restraint coupled to the pitch actuator, wherein the delta-3 restraint is configured to control the pitch of the blade relative to the mast when the pitch actuator fails, and wherein the delta-3 restraint provides an instantaneous blade pitch-flap coupling response.

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Patent Owner(s)

Patent OwnerAddress
TEXTRON INNOVATIONS INC40 WESTMINSTER STREET PROVIDENCE RI 02903

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Foskey, Christopher E Keller, US 15 64
Stamps, Frank B Colleyville, US 151 1667

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