摘要
为了获得激光推力器在多脉冲激光作用下产生推力的变化情况,建立了一套基于半导体应变片技术的双脉冲推力测试系统,介绍了系统标定及测试原理。在单脉冲能量80 J,重复频率10 Hz的条件下进行了实验,实验结果表明:该测试系统响应速度快、精度高,实验结果可信;同时发现,在双脉冲激光作用下,推力器产生的脉冲推力大小和推力的持续时间均会减小,冲量耦合系数也有所降低,与文献报道实验测量结果基本一致,对激光发动机的理论和数值研究具有一定的参考价值。
To acquire the transformation of thrust with multl-pulse laser , a set of double-pulse thrust measurement system is established based on semiconductor strain gauge technology. Force produced by laser thruster is tested and analyzed with multi-pulse laser, whose single pulse energy is 80 J and frequency is 100 Hz. Results indicate that the measurement system is both suitable and credible. Decrease of thrust and impulse coupling coefficient is observed, which is in good agreement with the experimental results reported by other literatures.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2007年第5期542-545,共4页
Journal of Propulsion Technology
基金
国家"九七三"项目(61328)
关键词
激光推进
应变片
双脉冲^+
推力测量
Laser propulsion
Strain foil
Double-pulse^ ＋
Thrust measurement
