摘要
铝粉在推进剂燃烧表面上会发生团聚凝结,对推进剂燃烧性能及固体火箭发动机的绝热层和喷管烧蚀等性能造成重大影响。文章综述了固体推进剂中铝粉燃烧方面的最新研究进展,主要包括铝粉点火及燃烧机理、凝聚相燃烧产物特性、影响因素及改善铝粉燃烧效率等方面的研究进展。铝粉表面特性、推进剂的微观结构和燃烧气氛环境等是影响铝粉燃烧的主要因素;采用控制铝粉粒径分布、铝粉包覆和多元合金等手段,可有效提高推进剂中铝粉的燃烧效率。
Aluminum particles agglomerated on the burning surface of propellant can seriously affect the combustion efficiency of propellant and the ablation resistance properties of insulation and nozzle of solid rocket motor.The latest research results about a-luminum combustion such as mechanism of aluminum ignition and combustion,properties of condensed combustion product（CCP）, influencing factors and new technologies used to improve combustion efficiency of aluminum powder have been reviewed in this pa-per.Conclusions show that the surface characteristics of aluminum particle,microstructure of propellant and composition of gaseous phase combustion products are most important factors which affect combustion efficiency of aluminum powder.Ameliorating aluminum particle size distribution,adding multi-component alloy and cladding aluminum powder with polymers can improve the combustion ef-ficiency of aluminum powder in propellant.
出处
《固体火箭技术》
EI
CAS
CSCD
北大核心
2015年第2期232-238,共7页
Journal of Solid Rocket Technology
关键词
固体推进剂
铝粉
团聚
表面层
solid propellant
aluminum
agglomeration
surface layer
