摘要
本文根据Fourier光学和衍射散射理论分析了火箭燃气射流中Al_2O_3颗粒衍射散射对莫尔偏折图的影响,从实验上研究了Al_2O_3颗粒衍射散射造成莫尔条纹模糊的现象。实验结果表明,对Al粉含量较低(3～8％)的固体推进剂,莫尔偏折法能够用于其燃气射流场的显示。
In this paper, the theory of Fourier optics and diffracted scattering are used to analysis the effect of diffracted scattering of particles A12O3 in real rocket exhausted jet on the moire deflectogram. The phenomenon of moire fringes confusion caused by the diffracted scattering of particles A12O3 is studied experimentally. The results show that for the solid propellant of containg Al powder of 3-8%, the flow field of its rocket exhausted jet can be visualized with moire deflectometry.
出处
《中国激光》
EI
CAS
CSCD
北大核心
1993年第11期837-841,共5页
Chinese Journal of Lasers
基金
霍英东教育基金会青年教师基金资助项目
关键词
衍射散射
莫尔偏折图
火箭
燃气流
diffracted scttering, moire def lectogram, visualization
