火箭助飞鱼雷入水姿态角海上测量方法探讨

为了解决火箭助飞鱼雷入水姿态角度海上测量这一技术难点，该文避开传统方法，另辟思路，应用高速摄影技术对火箭助飞鱼雷入水过程在两个垂直方向上进行摄像，采用事后图像处理分析方法，对所提出的火箭助飞鱼雷的入水姿态角角海上测量方法加以探讨，并以算例分析了误差影响，从结果的解算过程可看出，这种新方法切实可行。     

磁隐身坦克的实验设计及性能检测

通过模拟实验,研究了磁隐身坦克的核心元件——同轴密绕消磁线圈的使用性能。实验室对其消磁效应的数据分析表明:同轴密绕消磁线圈能够消除坦克周围因被地磁场磁化而产生的磁场标志,其中近轴区域的消磁效果更为明显;如果在消磁线圈中通入反向电流,消磁物体的磁场反而会增强,呈缓慢磁化的趋势,这与电磁场理论相符。本实验设计的消磁线圈属于一种新功能的电磁装甲,能提高坦克在电磁战中的生存能力。     

增强忧患意识常怀忧党之心——学习党的十七届四中全会精神

党的十七届四中全会指出：“全党必须居安思危，增强忧患意识，常怀忧党之心，恪尽兴党之责。”增强忧患意识，常怀忧党之心，要从十七届四中全会召开的特殊背景来帮助理解，要从十七届四中全会对党的建设形势的分析来加深理解，要从十七届四中全会建设“学习型政党”战略任务的提出来着重理解。     

Investigation on the spatial distribution characteristics of behind-armor debris formed by the perforation of EFP through steel target

The behind-armor debris (BAD) formed by the perforation of an EFP is the main damage factor for the secondary destruction to the behind-armor components. Aiming at investigating the BAD caused by EFP, flash X-ray radiography combined with an experimental witness plate test method was used, and the FEM-SPH adaptive conversion algorithm in LS-DYNA software was employed to model the perforation process. The simulation results of the debris cloud shape and number of debris were in good agreement with the flash X-ray radiographs and perforated holes on the witness plate, respectively. Three-dimensional numerical simulations of EFP's penetration under various impact conditions were conducted. The results show that, an ellipsoidal debris cloud, with the major-to-minor axis radio (a/b) smaller than that caused by shaped charge jets, was formed behind the target. With the increase of target thickness (h) and decrease of impact velocity (v₀) and obliquity (θ), the value of a/b decreases. The number of debris ejected from target is significantly higher than that from EFP. Based on the statistical analysis of the spatial distribution of the BAD, An engineering calculation model was established considering the influence of h, v₀ and θ. The model can with reasonable accuracy predict the quantity and velocity distribution characteristics of BAD formed by EFP.     

基于Sobol’法的歼击机需求影响因素灵敏度分析

针对歼击机需求确定影响因素众多、传统分析方法仅能进行定性分析的问题,提出了基于Sobol’法的歼击机需求影响因素灵敏度分析方法。在构建了歼击机需求确定模型的基础上,提出了基于Sobol’法的歼击机需求确定模型参数灵敏度分析步骤,并结合算例验证了方法的可行性和有效性。分析结果表明:我方拟夺取空中优势等级的概率、敌方出动歼击机的数量和敌我双方歼击机作战效能的比值对歼击机需求的影响较大,战术运用系数、协同作战系数和管理优劣系数的影响微乎其微。     

The misguided and mismanaged intervention in Libya: Consequences for peace

In this paper, I critically analyse the doctrine of the Responsibility to Protect (RtoP), as it relates to the responsibility of intervening forces towards the people they claim to protect and the challenges that the situation in Libya now poses in the region and for the African Union (AU). I focus most of my attention on the coercive elements of the RtoP framework (Pillar III). This is the most contested element in the framework. Three questions guide this article: were there legitimate grounds to justify an external intervention in Libya? In the words of Hugh Roberts in Who Said Gaddafi Had to Go, ‘[w]hat if anything has Libya got in exchange for all the death and destruction that have been visited on it’ since 2011? What are the practical implications and consequences of the North Atlantic Treaty Organization (NATO) intervention, led by the United States (US), for regional peace? I discuss the problems surrounding the US–NATO intervention, followed by an analysis of the various positions and narratives leading up to the intervention, the framing and justifications provided for the intervention, and an analysis of the AU's proposal for the resolution of the Libyan crisis. I analyse the various debates that took place in the US (Pentagon/White House), at the United Nations, among scholars in the West and in Africa, and among various actors who tried to broker a ceasefire in Libya before and during the intervention. I conclude with a discussion of the implications for regional peace.