Model helicopter throttle governor/collective pitch control appa

Details Model helicopter throttle governor/collective pitch control appa Model helicopter throttle governor/collective pitch control appa

1976-03-01

1978-01-31

Schaefer, Robert K.

Electricity: motive power systems

Supplied or controlled by space-transmitted electromagnetic...

318584, 244189, 244180, H04Q 702, B61B 1308

Patent

active

040718115

ABSTRACT:
A throttle governor/collective pitch control apparatus for radio controlled model helicopters for proportionally controlling either the model helicopter rotor speed or the rotor collective pitch, including sensing and timing means determining the rotor speed and any changes thereof, comparison means for comparing a subsequently sensed rotor speed with a first sensed rotor speed and developing an error signal, and control means responsive to the error signal to provide a control signal proportional to any changes in the rotor speed. In the throttle governor mode any variations in rotor speed result in a proportional control signal to vary the model helicopter throttle so as to maintain constant rotor speed. In the auto-collective mode changes in rotor speed result in a proportional control signal coupled to the collective pitch servo for proportionally varying the model helicopter collective pitch.

REFERENCES:
patent: 3096046 (1963-07-01), Kendall
patent: 3622973 (1971-11-01), Domann

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