Cyclic control sticks for helicopters

Details Cyclic control sticks for helicopters Cyclic control sticks for helicopters

1989-01-12

1989-12-19

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft control

Pilot operated

74524, 74471R, B64C 1304

Patent

active

048877824

ABSTRACT:
A means for controlling a rotor of a helicopter utilizes cyclic pitch chas to its rotor blades, accomplished with a cyclic control stick. Cyclic control sticks have been a matter of concern in crashing situations. Prior art cyclic sticks are hinged to that they can be pulled out of the way of a pilot thrown forward and down by an impact. A lanyard actuated by the movement of the pilot's seat pulls the cyclic stick away from the pilot. Since such systems require various mechanisms and pulleys there is a need for an improved cyclic stick. A crashworthy cyclic control stick which is pilot actuated to overcome these difficulties is provided herein.

REFERENCES:
patent: 1156272 (1915-10-01), Cass
patent: 1806716 (1931-05-01), Seaton
patent: 2008693 (1935-07-01), Fator
patent: 2478173 (1949-08-01), Austin
patent: 3302478 (1967-02-01), Pauwels
patent: 4130259 (1978-12-01), Carlson et al.
patent: 4635327 (1987-01-01), Netzuik
patent: 4655416 (1987-04-01), Carnell et al.

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