基于合金材料的固体推进剂燃速增速方法  

Method for Increasing the Burning Rate of Propellant Based on Alloy Materials

作　　者：吴秋 任全彬[2] WU Qiu;REN Quan-bin(National Key Laboratory of Solid Rocket Propulsion,Northwestern Polytechnical University,Xi′an 710072,China;Academy of Aerospace Solid Propulsion Technology,Xi′an 710025,China;The Institute of Xi′an Aerospace Solid Propulsion Technology,Xi′an 710025,China)

机构地区：[1]西北工业大学固体推进全国重点实验室,陕西西安710072 [2]航天动力技术研究院,陕西西安710025 [3]西安航天动力技术研究所,陕西西安710025

出　　处：《火炸药学报》2025年第1期88-94,I0007,共8页Chinese Journal of Explosives & Propellants

摘　　要：为了研究金属丝对固体火箭发动机药柱燃速的影响,选择6种导热性能和力学性能均较优的材料,做成细丝嵌入到HTPB推进剂内开展点火试验。分析了材料增速比与抗拉强度的关系以及压强对增速比的影响,开展了基于传热理论及燃面反算的增速比瞬态分析,对比分析了不同材料物性参数对增速比的影响。结果表明,铜银合金、银镍合金的抗拉强度是纯银的2.1倍、3.6倍,增速比分别为纯银的94%和43%,合金材料的增速比和强度更均衡;工作平稳段平均压强从3.8 MPa上升至9.1 MPa时,银镍合金最大增速比从2.5提升至2.8;高压下增速比从0升至最高3.25,随后降至2.65并趋于稳定,增速效果波动较大;低压下基本无上升下降趋势,增速效果更稳定,与理论分析趋势吻合较好;不同材料熔点、比热容与增速比呈负相关,与导热系数呈现正相关。To study the effect of metal wires on the burning rate of solid rocket motor grain,six materials wires with superior thermal conductive and mechanical properties were selected and embedded into HTPB to conduct ignition tests.The relationship between the materials′burning rate enhancement ratio and tensile strength,and the effect of pressure on the burning rate enhancement ratio were analyzed,a transient analysis of the burning rate enhancement ratio based on heat transfer theory and burning surface back-calculation was conducted,and a comparative analysis on the impact of different materials property parameters on the burning rate enhancement ratio was carried out.The results indicate that the tensile strengths of the copper-silver and silver-nickel alloys are found to be 2.1 times and 3.6 times that of pure silver,the burning rate enhancement ratio at 94%and 43%of pure silver,respectively,the alloys have a more balanced performance combination of burning rate enhancement ratio and strength.When the average pressure increases from 3.8 MPa to 9.1 MPa,the max burning rate enhancement ratio of the silver-nickel alloy increases from 2.5 to 2.8.Under high pressure,the burning rate enhancement ratio increases from 0 to the maximum of 3.25,then decreases to 2.65 and stabilized,showing large fluctuations in the burning rate enhancement ratio.In contrast,under low pressure,there is hardly any rising or falling trend,leading to a more stable burning rate enhancement effect,which better match the theoretical analysis.The melting points and specific heat capacities of different materials are negatively correlated with the burning rate enhancement ratio,while the thermal conductivity shows a positive correlation.

关 键 词：物理化学 固体火箭发动机 增速材料 增速比 合金材料 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] V512[航空宇航科学与技术—航空宇航推进理论与工程]