激光干涉仪测微冲量原理

推进技术 ›› 2007, Vol. 28 ›› Issue (5): 530-533.

激光干涉仪测微冲量原理

王广宇,金星,叶继飞

装备指挥技术学院北京101416;装备指挥技术学院北京101417;装备指挥技术学院北京101418

发布日期:2021-08-15
基金资助:
:国家“九七三”项目(61328)

Principle of micro-impulse measurements using laser interferometry

Inst.of Equipment Command and Technology,Beijing 101416,China;Inst.of Equipment Command and Technology,Beijing 101417,China;Inst.of Equipment Command and Technology,Beijing 101418,China

Published:2021-08-15

摘要/Abstract

摘要： 对激光干涉仪测量微冲量的原理进行了初步研究,将激光与靶材相互作用产生的微冲量转化为冲击摆的微幅振动,通过激光干涉仪辨识此振动以获得冲量。激光干涉仪可分辨出λ/8的微振动,为精确测量微冲量提供了可靠的保证。理论分析表明,研究工作对在作用力时间不可忽略条件下精确测量10-4N.s量级以下的微冲量具有意义。

关键词: 激光等离子体;推力器;激光干涉仪;微冲量测量+;冲击摆+

Abstract: The primary principle of micro-impulse measurement using laser interferometry is described,and impulse can obtained by measuring tiny vibration of ballistic pendulum.Laser interferometer can measure vibration of λ/8,which guarantee the accuracy of micro-impulse measurement.Results show that this method can be used to measure impulse accurately,which is less than 10-4N·s when time of action force is not ignored.

Key words: Laser plasma;Thruster;Laser interferometer;Micro-impulse measurement+;Ballistic pendulum+

王广宇,金星,叶继飞. 激光干涉仪测微冲量原理[J]. 推进技术, 2007, 28(5): 530-533.