NASA NTRS · 19740000179
Pulse-width-modulated servo valve for autopilot system
Abstract
Valve was developed for autopilot wing-lever system and is to be used in light, single-engine aircraft. Valve is controlled by electronic circuit which feeds pulse-width-modulated correction signals to two solenoids. Valve housing is cast from plastic, making it very economical to fabricate.
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Garner, H. D.. 1974-10-01. Pulse-width-modulated servo valve for autopilot system. https://ntrs.nasa.gov/citations/19740000179
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