激光干涉法在扭摆法测量微冲量中的应用

推进技术 ›› 2010, Vol. 31 ›› Issue (1): 119-122.

激光干涉法在扭摆法测量微冲量中的应用

方娟,洪延姬,叶继飞,王广宇

装备指挥技术学院研究生院;装备指挥技术学院基础部;装备指挥技术学院基础部;装备指挥技术学院基础部

发布日期:2021-08-15
基金资助:
国家“九七三”项目(61328);国家自然科学基金项目(90916015)

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

Dept.of Postgraduate,Inst.of Equipment Command and Technology,Beijing 101416,China;Dept.of Basic Theories,Inst.of Equipment Command and Technology,Beijing 101416,China;Dept.of Basic Theories,Inst.of Equipment Command and Technology,Beijing 101416,China;Dept.of Basic Theories,Inst.of Equipment Command and Technology,Beijing 101416,China

Published:2021-08-15

摘要/Abstract

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。

关键词: 微冲量测量;扭摆;激光干涉;小角度测量;激光微推力器

Abstract: 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 0.8×10-5 N·s.

Key words: Micro-impulse measurement;Torsion pendulum;Laser interference;Tiny-angle measurement;Micro-laser plasma thrusters

方娟,洪延姬,叶继飞,王广宇. 激光干涉法在扭摆法测量微冲量中的应用[J]. 推进技术, 2010, 31(1): 119-122.