Self-driving helicopter tail rotor

Details Self-driving helicopter tail rotor Self-driving helicopter tail rotor

1988-10-19

1990-09-04

Barefoot, Galen

Aeronautics and astronautics

Aircraft, heavier-than-air

Helicopter or auto-rotating wing sustained, i.e., gyroplanes

417356, 417420, B64C 2782

Patent

active

049538110

ABSTRACT:
In order to compensate for the torque component generated by the main rotor f a helicopter, the helicopter engine turns a tail rotor while it is turning the main rotor. Tail rotors, while essential components, take power from the engine, introduce a drag force, add weight, and increase rotor noise. Since the engine is as close as possible to the main rotor, the complexity, number of parts, weight and efficiency of the remote tail rotor have gone unchanged. By this invention, those parts, and hence their added weights, have been eliminated. A self-driving tail rotor for a helicopter is provided herein.

REFERENCES:
patent: 1761444 (1930-06-01), Jones
patent: 2118589 (1938-05-01), Carpenter, Jr.
patent: 2473329 (1949-06-01), Candler
patent: 3353028 (1967-11-01), Braikevitch et al.
patent: 3506219 (1970-04-01), Mouille et al.
patent: 3708251 (1973-01-01), Pierro
patent: 3914629 (1975-10-01), Gardiner
patent: 4459087 (1984-07-01), Barge

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