Nitro-tetrazole based high performing explosives: Recent overview of synthesis and energetic properties

Heterocyclic skeleton (Azoles) and different energetic groups containing high performing explosives are highly emerged in recent years to meet the challenging requirements of energetic materials in both military and civilian applications with improved performance. For this purpose tetrazole (Azole) is identified as an attractive heterocyclic backbone with energetic functional groups nitro (-NO₂), nitrato (-ONO₂), nitrimino (-NNO₂), and nitramino (–NH–NO₂) to replace the traditionally used high performing explosives. The tetrazole based compounds having these energetic functional groups demonstrated advanced energetic performance (detonation velocity and pressure), densities, and heat of formation (HOF) and became a potential replacement of traditional energetic compounds such as RDX. This review presents a summary of the recently reported nitro-tetrazole energetic compounds containing poly-nitro, di/mono-nitro, nitrato/nitramino/nitrimino, bridged/bis/di tetrazole and nitro functional groups, describing their preparation methods, advance energetic properties, and further applications as high-performing explosives, especially those reported in the last decade. This review aims to provide a fresh concept for designing nitro-tetrazole based high performing explosives together with major challenges and perspectives.     

软件定义的航天器测试网络技术

航天器测试网络是航天器自动化测试运行、测试数据监测分析等测试业务运行的信息通道,它的性能将极大影响航天器试验测试效率与试验数据的应用效能。针对传统航天器测试网络存在的物理独立部署、人工迁移、存在数据孤岛以及无法高效交换共享的不足,本文参考借鉴软件定义网络技术,设计了基于虚拟局域网及软件定义网络技术的软件定义航天器测试网络。该测试网络技术具备良好的软件重构、区域隔离、测试信息汇聚共享性能,能够通过软件重构,自动化迁移部署航天器测试网络;通过网络区域逻辑隔离,确保各航天器测试指令运行区域受控、安全;通过全局测试数据汇聚实现多航天器测试数据的交换共享,从而有效解决了航天器测试网络快速部署、测试指令安全运行与测试数据交换共享的问题,有力推动了装备试验数据工程的建设工作。     

Investigate the effects of magnetic fields on the penetration ability of a shaped charge jet at different standoffs

The influence of a magnetic field on the stability of a shaped charge jet is experimentally investigated at standoffs of 490, 650 and 800 mm. The experimental results without and with the magnetic field are compared in terms of the shaped charge jet form, stability and penetration ability. A theoretical model based on one-dimension fluid dynamics is then developed to assess the depth of penetration of the shaped charge at those three standoffs and magnetic conditions. The results show that the penetration capability can be enhanced in more than 70% by the magnetic field. The theoretical calculations are compared with the experimental results with reasonably good correlation. In addition, the parameters introduced in the theory are discussed together with the experiments at three standoffs studied.     

信息化条件下装备保障组织变革的新逻辑

分析了装备保障组织作为一个开放的复杂系统,面对信息化所带来的巨大变化,其结构变革的必然性以及变革所要遵循的基本原则,指出了信息化时代装备保障组织所应具有的基本特征。     

NCES服务发现体系研究及我军发展建议

为占有信息优势,进而占有决策优势,美军在总结近年实际战争经验的基础上,提出服务发现体系结构。在深入研究美军NCES(net-centerenterpriseservice)服务发现体系结构的基础上,分析了NCES的背景和发展趋势,NCES服务发现体系结构的含义和优势,其视图、关键技术和不足等。借鉴美军建设该体系结构的思想与发展趋势,立足我军实际情况,建设我军自己的服务发现体系结构。有助于提高我军信息获取能力,为占有决策优势提供强有力的支持。     

基于DHDF的装备科研试验后勤保障质量综合评价方法

运用物理-事理-人理系统方法论,建立了DHDF综合评价方法结构模型,并以装备科研试验后勤保障质量为评价对象,构建评价指标体系和确定权重。最后,给出了具体的综合评价实例,并对评价结果进行了科学分析。     

基于随机Petri网的维修质量管理组织结构建模与分析

简述了利用随机Petri网进行维修质量管理组织结构建模的方法。根据实际需求,建立了2种组织结构形式的仿真模型。以模型为基础,对维修质量管理组织结构的静态结构和动态行为进行了研究,解决了维修质量管理组织结构的优选问题,对组织结构设计具有一定的指导作用。     

水下航行器动力定位下的运动轨迹设计与仿真

对远程低速水下航行器在动力定位系统作用下的运动进行了研究.远程低速水下航行器由于航程远必须采用GPS全球导航定位系统进行导航,于是水下航行器就必须具有动力定位的能力,使之可以在需要GPS导航的时候上浮到近水面,导航完成后再下潜回航行深度.在建立水下航行器运动数学模型及进行推力分配的基础上,对远程低速水下航行器的典型运动轨迹进行了仿真,并对仿真结果进行了分析.     

武器系统效能评估数学模型描述

在武器系统效能评估中,武器系统的战技指标是评估武器系统效能的重要因素.对武器系统的可靠性和维修性进行了研究,并应用于可用性矩阵计算中.利用随机过程理论,建立了武器系统可信性矩阵和武器系统效能能力指数模型,最后建立了武器系统效能评估模型.     

维和任务区当地译员的重要作用与素质要求

维和行动中的当地译员是一个特殊群体,在维和任务中具有重要作用。当地译员必须具备保密性、中立性、服务性等基本素质。因此,最大限度地调动当地译员的工作热情、提高其职业素质、是保证维和行动顺利完成的重要环节。