THE DRIVE AND CONTROL OF MODEL GS-221 HIGH SPEED PHOTOGRAPHIC MEASURING INSTRUMENT
GS—221高速摄影机的驱动控制系统

Model GS-221 high speed photographic measuring instrument is the special miniature high speed cine-theodolite for measuring the attitude and transyerse drift of the huge rocket begining flight. The main part of the instrument is an intermittent synchronous high speed camera. Its main specifications, the principle of the control system and the experiment results are introduced in this paper.