关键词: 固体火箭发动机;测试技术;数据放大器;应用

Abstract: As AD-1 precision data amplifier has been used in the measuring systems for the thrust and the pressure of solid rocket motors instead of SF-72 data amplifier,it is found that the measurement accuracy rises up to 0.02% from 0. 1 %, the anti-interference ability and the stability are improved, and the match with A/D in data sampling is also solved.Meanwhile, it makes a power supply for bridge eliminated for better economization. So the application is worth being extended.

Key words: Solid rocket engine;Measuring technique;Data amplifier;Use