Elevator control system especially for an aircraft

Details Elevator control system especially for an aircraft Elevator control system especially for an aircraft

1987-09-09

1988-08-09

Barefoot, Galen

Aeronautics and astronautics

Aircraft control

244227, 244194, B64C 1342

Patent

active

047622946

ABSTRACT:
An elevator control system especially for an aircraft such as an airplane, s equipped with an electrically controllable elevator flap drive system for the elevator flap on each side of the aircraft. Additionally, the system is equipped with a mechanically controlled auxiliary drive system which is responsive to a hand wheel operated by the pilot. A single hand wheel has mechanical connecting links to the elevator flaps on both sides of the aircraft. Monitoring features enable the pilot to test the auxiliary mechanical drive system without actually switching on that system. The auxiliary mechanically operated system is functional even if all other power systems failed, since a ram air turbine is provided for generating the hydraulic pressure for driving the auxiliary system.

REFERENCES:
patent: 2823879 (1958-02-01), Smith et al.
patent: 3773282 (1973-11-01), Sands et al.
patent: 4533097 (1985-08-01), Aldrich

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