高温高压环境中凝相颗粒粒度分布实验研究  

The Experimental Investigation on Condensed Particle's Size Distribution in High-temperature and High-pressure Condition

作　　者：彭小波[1] 张胜敏[1] 万小朋[1] 

机构地区：[1]西北工业大学,西安710072

出　　处：《弹箭与制导学报》2012年第3期141-144,共4页Journal of Projectiles,Rockets,Missiles and Guidance

摘　　要：为了研究固体火箭发动机燃烧室内凝相颗粒的分布规律,改进了一种固体推进剂凝相燃烧产物收集装置,针对典型的HTPB复合推进剂,开展了不同聚集状态下凝相颗粒的收集实验。研究结果表明,凝相燃烧产物在0.27～100μm之间都有颗粒存在,凝相颗粒主要集中在0.27～10μm之间,粒径大于20μm的颗粒较少;工作压强对颗粒粒径分布有较大影响,随着工作压强的升高,凝相颗粒粒径变小,粒度分布更为集中;工作压强相同的条件下,随着聚集角度的增加,凝相颗粒粒径变大。A device was improved to collect the condensed particles of the solid propellant. The typical HTPB composite propellant containing 17% aluminum was experimentally investigated under different condition. Collection experiments and particle size analysis were per- formed so as to investigate the effects of operation pressure and concentration degree on particle size distribution. The experimental results show that the range of particle size is from 0. 27μm up to about 100μm. The majority of particle size is from 0. 27μm to 10μm. The result indicates that the particle size distribution is primarily dictated by the operation pressure. The particle size is reduced with increasing pressure, at the same time the diameter distribution is concentrated. It is found that the particle diameter is raised with the increase of the concentration degree.

关 键 词：固体火箭发动机 燃烧室 凝相颗粒 粒子收集 粒度分布 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]