Two-axis controller Patent
Two axis flight controller with potentiometer control shafts directly coupled to rotatable ball members
Ballard, R. R.↗
Engineering topics
Ballard, R. R.
Publications and source records attributed to Ballard, R. R..
Engineering topics
Publications and source records attributed to Ballard, R. R..
Two axis flight controller with potentiometer control shafts directly coupled to rotatable ball members