激光干涉法在扭摆法测量微冲量中的应用  

Application of laser interference in micro-impulse measurement with torsion pendulum

作　　者：方娟[1] 洪延姬[2] 叶继飞[2] 王广宇[2] 

机构地区：[1]装备指挥技术学院研究生院,北京101416 [2]装备指挥技术学院基础部,北京101416

出　　处：《推进技术》2010年第1期119-122,共4页Journal of Propulsion Technology

基　　金：国家"九七三"项目(61328);国家自然科学基金项目(90916015)

摘　　要：介绍了激光干涉法测微小转角的原理及测量方法,提出了采用激光干涉测量微冲量的方法,将激光与靶作用产生的微冲量转化为扭摆的转动角度,通过激光干涉法测量此微小转角从而计算出冲量。相同单脉冲能量下,以PVC+2%C为工质,用扭摆法测量了激光与工质作用产生的微冲量,结果表明该测试系统分辨率为2×10-8N.s,量程为2×10-7～0.8×10-5N.s。The measurement principle of tiny-angle using laser interference method is introduced. This method is used to measure micro-impulse. The impulse can be obtained by measuring tiny rotation-angle of torsion pendulum. The micro-impulses are measured with a torsion pendulum using PVC ＋ 2% C as target under the same single pulse energy condition. The experimental results indicate that the resolution of measurement system is of 2 × 10 ^-8N· s and the range is between 2 × 10 ^-7 and 0.8×10^-5N·s.

关 键 词：微冲吊测量 扭摆 激光干涉 小角度测量 激光微推力器 

分 类 号：V493[航空宇航科学技术] TN249[电子电信—物理电子学]