铝粉含量对GAP钝感推进剂性能的影响

以铝粉含量为5％、10％、15％和18％的缩水甘油叠氮聚醚(GAP)推进剂配方为研究对象,采用力学拉伸试验机、动态热机械分析仪(DMA)和模拟计算软件等,分析了铝粉含量对推进剂力学性能、界面性能、燃烧性能、安全性能、能量性能和密度等的影响.结果表明,以30μm铝粉代替320μm AP,随铝粉含量的提高,推进剂的最大抗拉强度和最大伸长率逐渐增大,界面性能得到进一步改善;推进剂在3～9 MPa下的静态燃速并未发生明显变化但压强指数由0.43降低至0.40.配方中铝粉含量为5％和18％的推进剂危险等级均达1.3级,其中铝粉含量为18％的推进剂配方的撞击和摩擦感度分别为0％和44％,低于铝粉含量为5％的配方(分别为4％和48％);软件模拟计算表明,铝粉加入量的提高使推进剂的能量和密度均呈上升趋势,但推进剂的标准比冲提升趋势趋于平缓.     

Review on the Reactivity of 1,1‐Diamino‐2,2‐dinitroethylene (FOX‐7)

1,1‐Diamino‐2,2‐dinitroethylene (FOX‐7) is a novel high‐energy insensitive material with good thermal stability and low sensitivity, and exhibits excellent application performance in the field of insensitive ammunitions and solid propellant. Although FOX‐7 is simple in molecular composition and structure, its chemical reactivity is abundant and surprising, including salification reaction, coordination reaction, nucleophilic substitution reaction, acetylate reaction, oxidizing reaction, reduction reaction, electrophilic addition reaction, among other reactions. These reactions are systemically summarized and some reaction mechanisms are analyzed in this review.     

基于深度学习的小口径弹药装配设备故障诊断专家系统

针对小口径弹药装配设备故障诊断智能化程度不足、诊断效率低以及误诊率高等问题,开展小口径弹药装配设备故障诊断技术和专家系统研究。为提高复杂装备故障知识推理及判别精度,研究基于知识图谱和故障树的故障类别知识库构建方法,提出基于规则和案例的故障知识推理方法,采用深度学习算法进行故障知识推理和更新,构建故障诊断模型并用于小口径弹药装配设备故障诊断专家系统。结果表明：该系统可实现对小口径弹药装配设备故障的智能预测和分析,符合制造装备智能化发展要求,为制造装备智能化、信息化的研制发展和推广应用提供参考。     

激光销毁弹药若干问题的研究

阐释了激光打孔侵彻销毁弹药基本原理,评述和分析了当前激光打孔实验、仿真以及激光辐照带壳含能材料研究现状,探讨了激光销毁弹药热点问题。     

12.7mm双头弹装填条件变化对弹道性能的影响分析

针对双头枪弹的特点，概要描述了双头枪弹完整的内弹道过程，提出了双头弹的内弹道计算假设，应用文献[1]所建立的双头弹道计算方程组当某12.7mm双头弹装填条件－质量，质量匹配，装药量，起动压力和药厚等变化时对内弹道性能参数的影响进行了对比分析，得到了一些重要结论。     

Nano‐Computed Tomographic Measurements of Partially Decomposed Ammonium Perchlorate Particles

High performance solid rocket motors typically contain ammonium perchlorate (AP) particles as the oxidizer. Ammonium perchlorate provides good performance, but thermal decomposition leads to safety concerns for handling and storing solid propellant. Computed tomography is shown to allow for visualization of the AP decomposition process, providing in‐situ, quantitative data. The current work demonstrates the use of nano‐computed tomography (nano‐CT) scanning to elucidate aspects of AP decomposition by studying partially decomposed 400 μm diameter AP particles after isothermal heating at 200 °C. Data provides insight into shape and location of the pores. Analysis shows that the porosity developed within the particle begins approximately 15 μm below the particle surface and moves inward as well as outward towards the surface as the heating time increases. No substantial heating time dependence was observed on the pore size distribution. The size and location distributions of decomposition sites forming below the AP particle surface were quantified for the first time. Comparisons to previous work are discussed.     

Mechanical Mocks for Insensitive High Explosives

Three mechanical mocks were formulated and tested as replacements for the current mock for insensitive explosives LX-17-1 and PBX 9502 because its binder was no longer available. The three polymers evaluated were a butyl/isobutyl acrylate copolymer, ethyl cellulose and a new fluoropolymer, PFR 91. The glass transitions of these polymers were 35, 130, and ?10°C, respectively. Two inert fillers, talc and cyanuric acid, were used in the new formulations. Pressing densities and mechanical and thermal properties were used to characterize these mocks. The mock based on the acrylic copolymer most closely emulated these insensitive high explosives.     

碳纤维对无壳弹发射药燃烧性能影响的研究

利用密闭爆发器实验 ,对不同长度和含量碳纤维的无壳弹发射药进行测试 ,比较其陡度( dp/dt)数值和压力～时间加入曲线 ,得到了较佳的碳纤维长度和含量 .实验结果表明 ,适当长度和含量的碳纤维能在一定程度上改善无壳弹发射药的燃烧性能     

弹药可靠性试验逆序数据的统计修正

文中通过实例，对两种“逆序”数据的统计修正方法进行了研究，对存在问题的方法进行了改进，并得出了修正函数参数的取值规律。