灼热桥丝式电火工品静电发火数理模型

根据灼热桥丝式电火工品的电热起爆机理,在桥丝药剂系统的物理传热过程中忽略桥丝药剂接触面的热阻和热容等假设条件下,建立其静电发火的理想数理模型。针对此模型方程提出了一种数值解法,并对解的结果进行了讨论。     

电磁辐射对桥丝式电火工品性能影响研究

利用传导方法研究射频对桥丝式电火工品的桥丝电阻、烤爆、迟发火以及瞎火等性能影响。研究结果表明,在10％发火功率和0．4MHz的敏感频率条件下,所研究的3种电火工品在照射1～5min后,电阻增加1.2％～7．4％,并且17．3％的试样在照射的过程中出现了烤爆;在对经过照射后的试样进行正常的发火感度试验中,发火时间显著增加,出现了不同程度的迟发火,16．9％的试样瞎火。     

桥丝式电火工品静电感度测试方法研究

本文对目前静电感度试验的现状进行了分析。在理论分析的基础上解决了JGY-50型静电火花感度仪的串联电阻和真空开关所带来的问题。提出了桥丝式电火工品的静电感度测试新方法,通过一个高压线性采样装置直接测量试样在试验过程中的电压、电流曲线,求得试样实际消耗的能量,以此统计试样的静电感度。采用这种方法,测试了JD-11电点火具的50％发火能与放电时间常数的关系,得到了呈单调规律变化的曲线。     

某型电瓶叉车电磁安全性评价研究

某型电瓶叉车是为适应电发火装备搬运作业而设计的专用叉车,由直流电机驱动,定型前需对其进行电磁安全性评价研究.使用电磁辐射分析仪对其电磁辐射强度进行测试,并结合装备敏感部位的电磁感应强度,分析叉车电磁辐射对电发火装备的影响程度,给出叉车电磁安全性评价结论.     

超宽带电磁脉冲对无线电引信辐照效应研究

为了研究无线电引信在强电磁环境下的安全性和可靠性,利用频带很宽的超宽带电磁脉冲（UWB）源对某型无线电引信系统进行了辐照实验。对不同姿态的无线电引信系统的UWB辐照试验表明,当无线电引信系统的轴线方向与超宽带辐射场极化方向一致时,电磁能量耦合最强,最易于受到超宽带电磁辐射场的干扰;在无线电引信系统不加电情况下,UWB辐照基本不会使无线电引信起爆,也不会对其产生明显影响;但是较强的UWB辐射场会使处于加电工作状态下无线电引信意外起爆,但经过辐照后整个无线电引信系统内在性能参数不会产生明显变化。     

电桥材料和结构对发火感度影响分析

电桥材料和结构可影响电火工品的发火感度,依据电火工品发火能量平衡方程,对几种常用材料不同电桥形状对电火工品(EED)感度的影响进行了分析,结果表明通过改变电桥材料和电桥结构能够降低EED的发火感度,为EED改进提供了依据。     

网电作战目标识别系统建设

随着信息技术的普及和发展,作为陆海空天之外的第五空间,网络电磁空间已成为现代信息战争的重要作战域。网电作战目标成为作战双方打击和防卫的关键对象,并贯穿于各个作战域。文章就网电作战目标识别提出网电作战目标识别系统的建设。以美军在其"作战云"理念下建设的目标情报融合系统作为参考,从系统组成要素和系统组织关系等层面对未来网电作战目标识别系统建设提出构想,有益于未来网络电磁空间情报体系框架构设。     

红外脉冲强光辐射源中电爆丝爆炸机理研究

利用电爆丝的一种红外脉冲强光辐射新技术,从理论和实验上研究了电爆丝的爆炸机理。用电爆丝绝热加热模型数值模拟了电爆丝在冲击大电流作用下的电爆炸特性,电爆丝根数对电爆炸特性的影响。实验结果与理论模拟相一致。     

电磁发射装置电-磁-热场分布的分析与仿真

为探讨电磁发射过程中出现的热烧蚀现象,构建了电磁发射及电接触层接触电阻的模型,推导出电-磁-热场耦合方程,采用有限元数值计算方法得到了在脉冲电流激励下,轨道和电枢间电流密度、磁感应强度及温度的分布图。计算过程表明:电磁发射过程实际是电-磁-热场的耦合过程,接触电阻是造成电磁发射热损耗的主要原因之一,接触电阻使得轨道和电枢接触表面区域的电流密度极大,容易造成轨道材料的烧蚀。     

PSpice模型用于电爆炸丝的数值模拟

根据细铜丝通过大电流时发生爆炸而导致电阻率的急剧变化的实验数据,建立了其PSpcie电路模型。然后将这个模型应用于一个含电爆炸丝断路开关的电感储能脉冲功率电路,以探讨电爆炸丝的参数选择对脉冲功率调制系统的影响。研究表明电爆炸丝长度主要控制电流切断的效果,而电爆炸丝的根数或截面积主要控制电爆炸丝切断的时刻,并且初始电压愈大,切断愈迅速,在负载上获得更高的电压。这些结论可以较好地解释实验结果。     

Putin – the masked nemesis of the strategy of ambiguity

Recent events demonstrate the complex and adaptive approach employed by Russia to reassert influence in Europe. The changing face of Russia’s strategy commenced in 2007 when it launched a crippling cyber-attack against Estonia. This was followed by a large Russian conventional attack against Georgia in 2008, occupying two large areas of the nation. 2014 witnessed the Russian annexation of Crimea where in just a week, Russia seized control of Crimea “without firing a shot.” The annexation of Crimea was rapidly followed by a Russian inspired and led subversive war in eastern Ukraine. The common thread among these diverse Russian operations is its use of ambiguity to confound and confuse decision makers in the West.     

India's counter-insurgency experience: the ‘trust and nurture’ strategy

The Indian Army, a force trained primarily for conventional warfare, has been engaged in internal counter-insurgency operations since the 1950s. Despite such a long innings on a counter-insurgency mode, little attention has been accorded within military circles to doctrinal innovation for waging sub-conventional warfare in India's democratic political context. At best, the Army continues to view counter-insurgency duty as secondary to its primary duty of defending India from external conventional threats. By conceptualizing a counter-insurgency strategy of ‘trust and nurture’, this article aims to fill this critical doctrinal gap in India's military policy. The author argues that a counter-insurgency strategy of ‘trust and nurture’ based on democratic political culture, measured military methods, special counter-insurgency forces, local social and cultural awareness and an integrative nation-building approach will result in positive handling of India's internal security problems. The author utilizes India's counter-insurgency experiences in Assam, Mizoram, Nagaland, Punjab, and Operation ‘Sadhbhavana’ in Jammu and Kashmir as illustrative empirical indicants in order to validate the ‘trust and nurture’ strategy.     

Helping hands: civil–military cooperation and Italy's military operation abroad

In the Post-Bipolar Era the growing complexity of the military operations requires a new approach for the resolution of international crises. Since the end of the Cold War, peace support operations (PSO) have become the mainstay and principal occupation of most Western armies. At the same time, Italy has been one of the most important actors in such an area. The article focuses on the cooperation between military and civil components (a process called CIMIC) as a key variable in the Italian PSOs. We will analyse in detail the main lessons learned from past military interventions as well as the general context in which new tendencies are taking place. The maintaining of a minimum security frame becomes essential to fulfil activities ‘collateral’ to the mission: reconstructing services and infrastructure, food distribution, water and medication, law and order, de-mining, training of local forces, and supporting local institutions. These are the main tasks to obtain thrust and support from the population.     

Terrorism,insurgency, kidnapping,and security in Africa's energy sector

Energy continues to serve as the bedrock of modern economies and the main driver of modern society. For Africa, the production and supply of energy resources such as crude oil, natural gas, uranium, coal, biomass, biofuels and other renewables are an important source of employment, rents, taxes, royalties and profits. This sector brings in several tens of billions of dollars of revenue annually. The production and delivery of such resources, however, depend on critical infrastructures such as pipelines, refineries, processing plants, terminals, rigs, electrical energy pylons, substations, pump stations, vessels, and tankers. These infrastructures have been attacked by terrorists, insurgents, vandals and saboteurs, all of whom see them as targets against which to register their grievances and extract concessions from the state. This paper is a chronological account of some of the documented incidents of terrorism, insurgency, kidnapping, destruction, sabotage, and human casualties suffered in the oil and gas sectors in Africa between 1999 and 2012. It is based on data extracted from the databases of the RAND Database of World Terrorism Incidents and the University of Maryland's Global Terrorism Database (GTD).     

Tacit support for terrorism: The rapprochement between the USSR and Palestinian guerrilla organizations following the 1967 war

This article demonstrates the inconsistent and wavering Soviet attitude towards national liberation movements in general and the Palestinian organizations in particular. Until the late 1960s, the Soviets viewed these organizations with suspicion, hesitating to engage in political dialogue with them. However, in the 1970s, political and military events in the region, as well as modifications in the Kremlin's Cold War strategies, led to a general shift towards the Middle East in Soviet foreign policy. Soviet leaders showed increased willingness to provide certain Palestinian organizations with arms with which to conduct terrorist activities against Israeli, pro-Israeli, Jewish and Western targets. The article explores the complex relations between Palestinian organizations and the USSR in the field of international terror. The study also exposes and analyzes the nature and content of Soviet–Palestinian arms dialogues and transactions. It provides clear evidence that Soviet policymakers and other luminaries were fully informed of, and sometimes directly involved in, these transactions and dialogues at the highest levels.     

A1 Qaeda and the radical Islamic challenge to western strategy

The September 11 global crisis prompted by the attacks on the World Trade Center and the Pentagon raises major questions concerning the nature and trajectory of terrorism in the post-Cold War global order. Hitherto, terrorism has been largely debated by analysts at the level of nation states. Terrorist and insurgent movements have also been largely anchored in nationalist and ethnic power bases even when they have sought to mobilise a transnational ideological appeal on religious or class grounds. There have been a few exceptions to this pattern such as the alliance between the German Baader-Meinhof group and the Japanese Red Army Faction, but even such international alliances as this did not, until at least the 1980s, presage anything like a global terrorist network necessitating a global strategic response. This study examines terrorism and global strategic responses.     

Helping hands: external support for the KNU insurgency in Burma

This article analyses to what extent the Burmese KNU insurgency made use of external support from states, refugees, and diasporas. Based on extensive fieldwork it is concluded that support from neighbouring states and refugees has for years kept the Karen rebellion alive. Western countries perceived forms of resistance to the illegitimate Burmese regime as just and have therefore played a crucial role in the continuation of conflict in Karen State. It is important that policymakers and donors as well as executing organizations continue to reflect critically on the way they exercise their work.     

Reviews

Douglas S. Derrer, We Are All the Target: A Handbook of Terrorism Avoidance and Hostage Survival. Annapolis, MD: US Naval Institute Press, 1992. Pp. x+135, notes, index. $14.95. ISBN 01–55750–150–5

Ian Knight, Zulu: Isandlwana and Rorke's Drift, 22–23 January 1879. London: Windrow & Greene, 1992. Pp.136, 150 illus., incl 8 colour plates, maps, biblio. £35. ISBN 1–872004–23–7

Ian Knight, By the Orders of the Great White Queen: Campaigning in Zululand through the Eyes of the British Soldiers, 1879. London: Greenhill Books and Novato: Presidio Press, 1992. Pp. 272, 17 illus., 1 map. £18.95. ISBN 1–85367–122–3

Manfried Rauchensteiner and Erwin A. Schmidl (eds.), Formen des Krieges: vom Mittelalter zum ‘Low‐intensity’ Conflict’. Graz : Verlag Styria, 1991. Pp.208. DM35. ISBN 3–22–12139–7

Harold J. Kearsley, Maritime Power and the Twenty‐First Century. Dartmouth: Dartmouth Publishing Company, Limited, 1992. Pp.xv + 203, 13 diagrams, index. £32.50. ISBN 1–85521–288–9     

基于GTST-DMLD-ESD的装备RMS建模仿真

装备的RMS是装备的重要设计参数,是影响战备完好和保障能力的关键因素.引入GTST-DMLD作为主要建模工具,建立起装备系统的RMS描述模型,以ESD为补充和扩展,对维修过程进行建模.并以GTST-DMLD-ESD模型作为装备RMS仿真的核心,对装备RMS仿真模型的总体框架进行了研究,并对各模块进行了较为详细的探讨.