Automatic flight control means for rotary wing aircraft

Details Automatic flight control means for rotary wing aircraft Automatic flight control means for rotary wing aircraft

1975-11-24

1977-01-25

Blix, Trygve M.

Aeronautics and astronautics

Aircraft, heavier-than-air

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

244182, B64C 1900, G05D 108

Patent

active

040047563

ABSTRACT:
An automatic flight controller for rotary wing aircraft having a setting apparatus for setting the device for the distance from a starting distance signal, a speed signal, and a remaining distance signal corresponding to the remaining distance from the starting spot to the hovering spot whereby the flight of the aircraft can be controlled in accordance with the remaining distance signal. A ground speed signal from a ground speed detecting device is integrated to obtain a signal corresponding to the flight distance from the starting spot and a remaining distance signal is then produced which is equal to the difference between the starting distance signal and the flight distance signal, and, through a function amplifier, a reference speed signal is obtained which corresponds to the remaining distance to be flown at every instance. This reference speed signal is compared with the actual ground speed to provide a speed difference signal which is used as a control signal for controlling the speed of the aircraft. The automatic flight controller may also provide an altitude control system for controlling the collective pitch control mechanism to obtain a desired altitude.

REFERENCES:
patent: 2650046 (1953-08-01), Vanderlip
patent: 3649818 (1972-03-01), Sylvander
patent: 3711042 (1973-01-01), Rempfer
patent: 3816716 (1974-06-01), DeGarmo

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