Redundant tail rotor control system

Details Redundant tail rotor control system Redundant tail rotor control system

1983-12-09

1985-07-16

Barefoot, Galen L.

Aeronautics and astronautics

Aircraft control

Pilot operated

745015R, 244 1721, B64C 1330

Patent

active

045291551

ABSTRACT:
A flight control system for a helicopter tail rotor having a semicircular quadrant 18 with bell cranks 36, 40 mounted on either end of the quadrant and flexible control cables 20, 22 connected to each bell crank. The bell cranks are spring loaded in opposition to cable tension, and a fixed abutment 72 provides a reaction against the bell crank springs in the event of a cable severance. The quadrant works against the spring loading of one bell crank in the event of breakage of the opposite control cable and is centered by the spring loading of both bell cranks if both cables are broken.

REFERENCES:
patent: 2841030 (1958-07-01), Wrighton
patent: 2992568 (1961-07-01), Benkovsky
patent: 3277738 (1966-10-01), Glauser et al.
patent: 3599507 (1971-08-01), Exton
patent: 4170147 (1979-10-01), Durno et al.
patent: 4198877 (1980-04-01), Huling

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