NASA NTRS · 19700000393
Thumb-actuated control device
Abstract
Rotary potentiometer device on the spoke of an aircraft steering wheel provides servo control of certain flight characteristics with no visual attention and a minimum of operational movement.
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Hadland, W. O., Iwasaki, N.. 1970-09-01. Thumb-actuated control device. https://ntrs.nasa.gov/citations/19700000393
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