AP多粒度级配固体推进剂非稳态燃烧响应模型  

Unsteady Combustion Response Model of Multi modal Ammonium Perchlorate Composite Propellant

作　　者：金秉宁[1] 刘佩进[1] 徐冠宇 JIN Bing ning;LIU Pei jin;XU Guan yu(Science and Technology on Combustion Internal Flow and Thermo?Structure Laboratory,Northwestern Polytechnical University,Xi′an 710072,China)

机构地区：[1]西北工业大学燃烧、热结构与内流场重点实验室,陕西西安710072

出　　处：《含能材料》2020年第4期291-299,共9页Chinese Journal of Energetic Materials

基　　金：国家自然科学基金资助(51706186)。

摘　　要：为获得高氯酸铵(AP)粒度级配对固体推进剂燃烧响应特性的影响,以氧化剂单粒度的多火焰稳态燃烧模型(BDP)为基础,考虑实际推进剂中AP多级配粒度分布,建立了AP多粒度级配的AP/端羟基聚丁二烯(HTPB)推进剂非稳态燃烧响应模型,并对模型进行校验。针对由四种AP粒度330,250,110μm和50μm组合成的几十种AP多级配复合推进剂,分别在工作压强10MPa、振荡频率25~1000Hz条件下开展了燃烧响应特性研究,分析了AP粒度级配和配比等参数变化对压强耦合响应函数的影响规律。模型计算结果表明,100~1000Hz,燃烧响应模型计算结果与文献实验测量结果吻合较好(实验压强>5MPa),误差小于9%。AP粒度配比与级配对燃烧响应函数的分布影响较大,影响规律基本满足:AP多级配中提高小粒度AP的配比含量或者降低大粒度AP配比含量可以抑制中低频振荡,但同时会增益中高频振荡。用中粒度AP替代小粒度AP可以抑制中高频振荡,反之,替代大粒度AP则可以抑制中低频振荡。In order to clarify the effect of multi modal ammonium perchlorate(AP)on combustion responses characteristics of AP/Hydroxyl polybutadiene(HTPB)composite propellants,the unsteady combustion response(Rp)model of multi modal AP com posite propellant has been established and calibrated.Under 10 MPa and 25-1000 Hz conditions,more than 10 types of AP based propellant samples containing AP with four typical average particle sizes(330,250,110μm and 50μm)have been used to calculate the characteristics of the combustion response.The effects of the AP modal and mass ratio on combustion re sponse function have been analyzed.The results show that:1)the Rp model calculation results are in good agreement with ex perimental results reported in the literature(pressure>5 MPa),deviation<9%;2)the AP particle modal and mass ratio have great effects on the combustion response function,and law is basically satisfied,showing that the increased content of small sized AP or reduced the content of large size AP could reduce medium and low frequency oscillation,but meanwhile it would drive higher frequency oscillation;3)Replacement of small sized AP with medium sized AP can reduce medium and high frequency oscillation.Conversely,the replacement of the large size AP with medium size AP can reduced low frequency os cillation.

关 键 词：燃烧不稳定 固体推进剂 高氯酸铵(AP) 多粒度级配 燃烧响应模型 

分 类 号：V435[航空宇航科学与技术—航空宇航推进理论与工程]