Heading hold logic

Details Heading hold logic Heading hold logic

1976-03-15

1977-01-18

Blix, Trygve M.

Aeronautics and astronautics

Aircraft, heavier-than-air

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

244178, 244196, B64C 1134, G05D 108

Patent

active

040035328

ABSTRACT:
The automatic heading retention mode of operation of an automatic flight control system for a rotary wing aircraft is discontinued and reestablished through the use of a logic circuitry responsive to the yaw rate, bank angle and airspeed of the aircraft and to the force applied to the cyclic pitch control member by the pilot. The logic circuitry provides for the isolation of information commensurate with left and right turns and summation of the yaw rate and bank angle in each direction to determine if automatic disengagement of the heading hold is warranted.

REFERENCES:
patent: 2733878 (1956-02-01), Ciscel
patent: 2845623 (1958-07-01), Iddings
patent: 3711042 (1973-01-01), Rempfer
patent: 3920966 (1975-11-01), Knemeyer

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