共查询到20条相似文献,搜索用时 82 毫秒
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为提升改性双基推进剂配方的设计能力,利用智能算法实现配方燃速性能设计与优化,通过对比几类典型智能算法,包括遗传算法、差分进化算法、粒子群优化算法和鲸鱼优化算法,对含RDX的改性双基推进剂进行了燃速性能的智能化配方优化与设计。结果表明,智能优化算法相对于统计优化而言操作简单、运行快速,而差分进化算法拟合出的14个最优配方其燃速性能最好且更稳定。在相同的压强条件下,14个优化配方的燃速显著大于已做配方的实验值。最后利用差分算法与支持向量回归模型进一步耦合形成了一套适用于含RDX的改性双基推进剂燃速性能预测的智能算法软件,基于该智能算法软件可推演得到燃速性能优越的新配方。 相似文献
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用ACP提高固体推进剂的燃速 总被引:5,自引:2,他引:3
用快燃物ACP提高改性双基推进剂、AP/HTPB复合推进剂和N-15D推进剂的燃速,取得了非常显著的效果。在HMX和RDX改性双基推进剂配方中加入不同粒度不同含量的ACP,推进剂的燃速均能提高,压强指数基本无变化。在AP基复合推进剂配方中加入ACP,其燃速均有不同程度的提高,而且在7~15MPa的压强范围内,压强指数小于0.45。成功地进行Ф64mm发动机试验,并获得稳定的P-t曲线。N-15D推进剂配方的燃速较低,加入ACP后,燃速也有提高,压强指数稍有增大。结果表明,加入ACP后燃速提高效率分别是:HMX改性双基推进剂配方为40.62%,RDX改性双基推进剂配方为38.00%,复合推进剂配方为37.35%,N-15D推进剂配方为9.90%。 相似文献
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改性双基推进剂通过加入各种添加剂来提高推进剂的能量或改善其烧燃性能。然而,各种添加剂加入推进剂后可能出现的晶析问题,又会影响推进剂的弹道特性及点火、密度、包覆等性能。所以在进行改性双基推进剂配方设计时,晶析问题是应该考虑的。 相似文献
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改性双基推进剂通过加入各种添加剂来提高推进剂的能量或改善其烧燃性能。然而,各种添加剂加入推进剂后可能出现的晶析问题,又会影响推进剂的弹道特性及点火、密度、包覆等性能。所以在进行改性双基推进剂配方设计时,晶析问题是应该考虑的。 相似文献
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高能丁羟推进剂用键合剂分子设计与应用 总被引:5,自引:2,他引:5
针对不同丁羟推进剂配方特点 ,设计合成几种新型键合剂 ,并分别在这些推进剂中试用。结果表明 :键合剂结构不同 ,对推进剂高、低、常温力学性能的影响也不同。同时还初步探讨了这些键合剂的键合机理 相似文献
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采用动态吸湿性能分析法测定高能推进剂的吸湿性,以典型配方NEPE(硝酸酯增塑聚醚)推进剂和低易损性推进剂为研究对象,考察了湿度对其力学性能的影响。结果表明:典型配方NEPE推进剂和低易损性推进剂吸湿性差别很大;高湿环境下,2种高能推进剂的力学性能变化差异明显;经干燥处理,典型配方NEPE推进剂存放3 d后,抗拉强度和伸长率完全恢复,而低易损性推进剂存放10 d,其抗拉强度只恢复至原先的一半。 相似文献
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端面粘贴包覆火药界面粘结强度研究 总被引:4,自引:3,他引:4
包覆火药装药控制燃气生成速率,降低弹性温度系数,提高弹丸初速的效果部分来自于包覆层的作用,对预制包覆层端粘包覆火药,其包覆层的厚度,密度,强度等性能已根据弹道和装药表确控制,包覆层与基药的界面粘结度就决定了包覆层控制燃气生成速率的有效性和可靠性,它是检验端面粘贴包覆火药工艺质量的关键指标,本文采用落锤实实验检包覆火药的界面结强度,研究了粘结工艺条件对端面粘贴包覆火药界面粘结强度的影响,通过实验选择出了合适的粘结剂及粘结工艺条件,制备了界面粘结强度良好的端面粘贴包覆火药。 相似文献
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Nanduri V. Sudarsan Samir K. Das Smita D. Naik 《Propellants, Explosives, Pyrotechnics》2016,41(5):844-849
Determination of propellant formulation by ballistic requirement is an important area of research in recent times. In this study, a theoretical method for the design of gun propellant formulation using primary data of ingredients and necessary thermochemical properties of the resultant propellant was established. The employed method is based on a mathematical model of thermochemical properties of the propellant by optimizing the heat of explosion of the propellant using the fmincon tool in MATLAB. A graphical user interface (GUI) based code was generated and developed for the formulation design of solid gun propellants. The designed code was verified by available data in the literature. Such code will be useful to the researchers working in the area of high energy materials for the design of unknown propellant compositions. Further, it can be extended to redesign the existing propellant formulation in order to enhance the ballistic performance. 相似文献
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Thermal decomposition of ammonium perchlorate-polystyrene propellant as a function of oxidizer loading has been found to behave in a fashion analogous to the thermal decomposition of ammonium perchlorate as a function of precompression pressure. It has been argued that the above behaviour of the propellant is due to the strain caused by the binder film on ammonium perchlorate contained in the propellant matrix. The presence of strain has been demonstrated independently by x-ray diffraction peak and infrared peak broadening and strain energy measurements. 相似文献
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Plasticizer migration across bonded propellant interfaces during cure has been shown to have a measurable effect on propellant properties compared to each propellant by itself. This shows that the curing period is significant to the migration phenomenon. The plasticizer migration has been shown to have a direct influence on tensile strength for short aging periods up to the point the plasticizer reaches equilibrium. The tensile data for short aging periods have been shown to follow an empirical equation connecting the physical characteristics of plasticizer migration with increasing propellant tensile strength. The diffusion coefficient has been evaluated on the basis of this relation from a plot of σ versus t1/2 and was in good agreement with the diffusion coefficient from the plasticizer content data. 相似文献
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发射装药挤压破碎对燃烧规律的影响 总被引:1,自引:0,他引:1
为探索发射装药挤压破碎对燃烧规律的影响,利用发射装药挤压破碎模拟试验装置,对发射药药床进行了系列挤压试验,对不同发射药样品进行了密闭爆发器试验,研究了其挤压破碎发射的密闭爆发器燃烧规律.结果表明,发射药破碎后初始燃烧加强,高压区燃烧减弱.药粒破碎不利于发射装药的发射安全性. 相似文献
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研究了Al粉、RDX及高氮量硝棉对螺压高能改性双基推进能量的贡献,配方选择了比较合适的Al粉、RDX含量,解决了采用高氮量硝棉的推进剂的力学性能问题。另外对含能催化剂进行了开发研究,并成功地用在火药中,使得螺压高能改性双基推进剂的性能有了大幅度的提高。 相似文献