制导炸弹发展综述

制导炸弹具有精度高、成本低、投放距离远等特点,已成为航空炸弹发展的重要方向,制导炸弹是在普通炸弹基础上改进的,制导系统是制导炸弹的关键技术。     

Experiment and simulation of launching process of a small-diameter steel cartridge case

In order to explore the rules of the deformation force during the launching of a small-diameter steel cartridge, the semi-closed bomb test method is used to test the greatest strains on chamber outer wall under the different chamber pressures. The pressure curves of cartridge chamber are measured in experiment, and the tensile test data of cartridge are loaded into the numerical calculation to compare with the experimental data. The conclusion was obtained that the calculated results match better with the experimental results by considering strain rate bilinear kinematic hardening material constitutive model. The forces on the various parts of the cartridge during launching and their deformation rules are achieved, in which the equivalent plastic strain decreases and the cylinder ring withstands the maximum equivalent stress when the cartridge case clings to the bore from the mouth to the bottom.     

某型火箭增程破甲弹发动机弹道炸分析与处理

根据某型火箭增程破甲弹,在研制阶段做高、底温强度试验时分别出现发动机弹道炸的质量问题,结合实践在理论方面进行了分析,提出了对发动机燃烧室内个别件改进设计的方法。     

激光制导炸弹的火控原理及应用

根据某型激光制导炸弹 (L GB)的纵向控制系统 ,给出了侧向控制系统的数学模型 ;讨论了 L GB投放区的概念并通过仿真得到了工程化的投放区 ;进行了包括飞机、飞控系统、武器和火控系统在内的大闭环武器火控系统仿真     

重叠网格方法研究多子弹抛撒气动问题

子母弹抛撒气动问题是一类典型的有相对运动的多体气动问题,也是重叠网格方法最有价值的应用领域之一。采用MI-Grid重叠网格软件系统,耦合流动力学方程和动力学/运动学方程,研究子弹分离过程的气动性能和运动轨迹,并结合正交试验设计,讨论和评估了出舱条件及气动干扰对子弹分离运动的影响,指出子弹在抛撒流场中受激波干扰对姿态运动影响很大,单子弹抛撒时母弹激波扫射使子弹俯仰特性剧烈波动,多子弹抛撒时弹舱流动受子弹挤压反射激波使子弹姿态抬头。     

THE SOCIAL AND PSYCHOLOGICAL IMPACT OF RADIOLOGICAL TERRORISM

The July 2005 terrorist attacks in London demonstrated the resilience of Western society in the face of low-level conventional terrorism. But the psychological damage from the London bombings would likely pale next to the severe, unpredictable, long-lasting effects of a radiological attack. One unique hazard of radiation exposure beyond the obvious physiological effects is that it is colorless, odorless, and tasteless, making it difficult for ordinary citizens to evaluate, quantify, and rationally understand the dangers confronting them. Radiological weapons stand out among the tools available to terrorists for their capacity to inflict far-reaching psychological damage to civilian populaces well beyond the immediate victims. A possible solution to mitigate the psychological consequences is to build a “resilience culture,” an interlocking set of beliefs, attitudes, approaches, and behaviors that help people fare better in any disaster or extraordinary circumstance. The “all-hazards approach,” which emphasizes the identifiable similarities among the “disaster triad”—that is, natural, accidentally man-made, and intentionally man-made disasters—extends to acts of terrorism and could help demystify the fears associated with radiological terrorist weapons.     

灭火弹比药量与灭火效果关系研究

在相同的试验条件下，对采用鼠笼式结构的灭火弹进行了静爆试验，并对采用不同比药量的灭火剂在爆轰作用下抛撒云团的成长过程和灭火效果进行对比分析，得出比药量与灭火效果的关系，最后确定最佳比药量。     

The Joint Chiefs of Staff,the atom bomb,the American Military Mind and the end of the Second World War

ABSTRACT

The decision by the US government to drop the atomic bombs on Japan is one of the most heavily debated questions in history. This article examines one element of that debate, in many ways the most surprising. That was the different views of the top of the military hierarchy in the USA, the Joint Chiefs of Staff (JCS). The JCS was on the whole more sceptical about using atomic weaponry than the USA’s civilian leadership, for ethical and strategic reasons. As such they were willing to consider very different ways of ending the war.     

基于模型参考的SINS/GPS制导炸弹俯仰偏航控制

由于SINS/GPS制导炸弹俯仰偏航要进行大空域的机动飞行,导致了其作为被控对象的状态方程参数变化剧烈,就要求飞控系统具有更强的适应能力和鲁棒性.因此.设计了基于模型参考变结构控制方法的鲁棒自动驾驶仪,具有良好的瞬态性能和抗参数大范围变化能力强等优点.以某型SlNS/GPS制导炸弹为例.选取典型的气动恶劣条件,进行了按给定制导指令飞行的六自由度全弹道飞行控制仿真,仿真结果表明,该自动驾驶仪能对制导炸弹实现鲁棒自适应控制,为飞控系统设计提供了重要参考.     

Does Intent equal Capability? Al-Qaeda and Weapons of Mass Destruction

The prospect of terrorists deploying weapons of mass destruction (WMD) is often referred to as the foremost danger to American national security. This danger has become more realistic because of al-Qaeda's expanding global network and the expressed willingness to kill thousands of civilians. In the past four years, numerous media reports have documented the group's ongoing quest for WMD capabilities; many reports have detailed al-Qaeda members’ attempts to manufacture or obtain certain chemical, biological, radiological, and nuclear (CBRN) agents to use in WMD against targets in the West and the Middle East. Yet the question remains: Does al-Qaeda's current WMD capability match its actual intent? While most studies of the group have focused on its explicit desire for WMD, allegations of CBRN acquisition, and the killing potential of specific CBRN agents, few open-source studies have closely examined the evolution of al-Qaeda's consideration of WMD and, most notably, the merit of actual CBRN production instructions as depicted and disseminated in the group's own literature and manuals. The following report will examine the history of al-Qaeda's interest in CBRN agents, the evolution of the network's attitude toward these weapons, and the internal debate within the organization concerning acquisition and use of WMD. More so, the following research will assess the validity of actual CBRN production instructions and capabilities as displayed and disseminated in al-Qaeda's own literature and websites.