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火箭助飞鱼雷与空投鱼雷齐射攻潜是水面舰艇中远距离攻潜的有效方法之一。由于火箭助飞鱼雷和空投鱼雷齐射的平台、弹道不同,为了有效的组织鱼雷的齐射,必须解决相关的问题。因此,从火箭助飞鱼雷与空投鱼雷的作战使用特点出发,首先探讨两雷齐射的定义及实施方法,其次通过计算机仿真研究了实施齐射时的直升机安全问题,并研究了两雷射击的间隔时间,拟合了计算公式。总之,此问题的研究对发挥水面舰艇中远距离反潜作战能力具有一定的意义。 相似文献
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火箭助飞鱼雷对随机机动目标的射击效率仿真 总被引:2,自引:0,他引:2
为解决火箭助飞鱼雷的作战使用问题,需要确定它对随机机动目标的射击效率,通过对该雷空中及水下弹道的各阶段深入细致的分析研究,建立了火箭助飞鱼雷射击效率仿真模型.着重探讨了采用目标现在点射击方法,对随机机动目标的发现概率仿真计算模型,进行了实际仿真计算,并就一些主要参数对射击效率的影响做了较为深入的分析.仿真结果表明,所建立的射击效率模型符合火箭助飞鱼雷的实际,对进一步深入研究其作战使用诸多问题具有一定的参考价值. 相似文献
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针对垂直发射飞航式火箭助飞鱼雷,分析其在空中各阶段的受力和运动情况,建立相应的空中弹道模型,并对模型进行了仿真,分析了火箭助飞鱼雷总质量、助推发动机推力、巡航发动机推力变化对飞行时间的影响。仿真结果表明,所建立的模型符合火控弹道模型要求,而且文中所建立的模型简明直观,可用于垂直发射飞航式火箭助飞鱼雷的火控解算。 相似文献
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为了分析了水面舰艇发射火箭悬浮深弹拦截潜射尾流自导鱼雷的作战使用问题,首先,概括了潜射尾流自导鱼雷的攻击原理。其次,介绍了水面舰艇针对尾流自导鱼雷的弹道预测原理以及鱼雷提前角估算数学模型,在此基础上,进一步建立了火箭悬浮深弹拦截鱼雷的射击要素求解模型。最后,进行了仿真检验,归纳了火箭悬浮深弹射击提前角随相关参数变化的分布规律。研究结果对火箭悬浮深弹拦截潜射尾流自导鱼雷的作战使用具有指导意义。 相似文献
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阻抗测试的采样数值算法 总被引:1,自引:0,他引:1
提出一种用于阻抗测量的算法———采样数值算法 ,这种算法是将激励信号和阻抗产生的响应信号通过同步采样技术转换成数值序列 ,将响应数值序列在由激励数值序列构成的正交坐标系中分解 ,得到响应数值序列的同相分量和正交分量 ,求出测试阻抗的参数值。这种阻抗测试的算法 ,具有独特的优点 ,不产生原理测量误差 ,测量精度高 相似文献
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用一种由膨胀珍珠岩材料做成的直径分别为2.3cm、3.0cm和3.7cm球状隔热浮子,对两种油品油罐火灾进行扑救模拟试验。研究结果表明,对于低闪点油罐火灾的灭火效果差,而对于高闪点的油罐火灾,隔热浮子覆盖油液表面,能够减少上面高温火焰对油液面的传热,进一步减弱油液面的蒸发,灭火效果好。 相似文献
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运用化学流体力学基本理论 ,建立了一维激波诱导可燃气体爆燃的九化学反应模型 ,完成了CO气体爆燃过程的数值模拟 ,由CO气体密度的变化以及流场中压力和温度的相应变化 ,清楚地说明了激波诱导可燃气体爆燃的发生机制以及对灭火的重要影响 相似文献
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在假单脉冲体制雷达的中频信号模拟中,由DSP配合软件实现的锥扫调制模拟,运算速度慢且数据传输量大。针对该问题,提出了一种基于LabVIEW语言和PCI-5640R中频卡的信号锥扫调制的实现方案,根据中频卡中的FPGA可编程实现多路并行运算的特点,利用LabVIEW对其编程,并进行仿真实验。结果表明:该方法模拟效果好,运算速度快,而且实现简单。 相似文献
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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. 相似文献
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Lord Aikins Adusei 《African Security Review》2013,22(3):332-359
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). 相似文献
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Samantha Newbery 《Small Wars & Insurgencies》2016,27(4):659-680
The UK’s interrogation operations during the conflict in Iraq (2003–2008) are often portrayed by the media as involving significant amounts of mistreatment. This article demonstrates that these practices are not necessarily representative of the UK’s interrogation operations across this conflict. In doing so it contributes to the limited literature on the practice of interrogation and on the UK’s combat operations in Iraq. The UK’s interrogation capability, and therefore its intelligence-gathering capability, is shown to have rested primarily with the military’s Joint Forward Interrogation Team (JFIT). The JFIT suffered from limitations to the number, training and experience of its interrogators and interpreters. It is argued that maintaining a permanent, higher level of preparedness for interrogation by the British armed forces is desirable. 相似文献
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Richard Reid 《Small Wars & Insurgencies》2019,30(4-5):1040-1069
ABSTRACT While the study of organised violence is considered essential to understanding the history of the West, and accordingly imbued with various layers of meaning and remembrance, war is widely regarded as inimical to the modern nation in Africa and stable development more broadly. Using examples drawn from primarily from East Africa, this paper considers the ways in which warfare in the deeper (‘precolonial’) past has been framed and envisioned in recent decades, in particular by governments whose own roots lie in revolutionary armed struggle and who began life as guerrilla movements. While in some cases particular elements of the deeper past were indeed mobilised in pursuit of contemporary political goals, in many other scenarios histories of precolonial violence were beheld as problematic and unworthy of remembrance. This paper highlights the paradox and ambiguity which has attended the memory of key aspects of Africa’s deeper past. 相似文献