| 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+ |
| DOI： |
| 分类号:V439 |
| 基金项目::国家“九七三”项目(61328) |
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| Principle of micro-impulse measurements using laser interferometry |
|
WANG Guang-yu1, JIN Xing2, YE Ji-fei3
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1.Inst.of Equipment Command and Technology,Beijing 101416,China;2.Inst.of Equipment Command and Technology,Beijing 101417,China;3.Inst.of Equipment Command and Technology,Beijing 101418,China
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| 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+ |
