Emergency anti-torque control system and method for helicopters

Details Emergency anti-torque control system and method for helicopters Emergency anti-torque control system and method for helicopters

1985-05-28

1987-03-10

Barefoot, Galen

Aeronautics and astronautics

Aircraft, heavier-than-air

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

244 76R, 244 1713, B64C 2782

Patent

active

046485686

ABSTRACT:
A drogue chute is deployed to the rear of a helicopter in the event of tail rotor malfunction. Deployment may be initiated automatically with the use of a microprocessor upon an abnormal level of rotor shaft vibration being sensed.

REFERENCES:
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patent: 2673051 (1954-03-01), Frost
patent: 3097819 (1963-07-01), Raistakka
patent: 3227399 (1966-01-01), Dastoli et al.
patent: 3713387 (1973-01-01), Karp
patent: 3930628 (1976-01-01), Robelen
patent: 4004764 (1977-01-01), Burklund et al.
patent: 4200252 (1980-04-01), Logan et al.
patent: 4496122 (1985-01-01), Whipple
Grumm et al, "Advanced Antitorque Concepts Study", USAAMRDL Tech Rep 71-23, Jul. 1971, p. 128.

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