Abstract: In the data processing of solid rocket engine testing system,zero point viaration is the main problem which has great influence on the precision of data processing results.Some phenomena of zero point viaration in thrust measurement system of solid rocket engine test were introducted.The basic principle of zero point viaration were analysed,and the data processing methods were also proposed.

Key words: Solid propellant rocket engine;Hot firing test;Thrust measurement;Balance check;Data processing

摘要： 介绍了测试系统推力测量中常见的零位变化现象，对零位变化的原理进行了分析，并提出了针对性的数据处理方法。

关键词: 固体推进剂火箭发动机;热试车;推力测量;零位检查;数据处理