复合战斗部爆炸成型弹丸结构参数影响分析

应用AUTODYN仿真软件,对一种复合战斗部方案的爆炸成型弹丸成型性能进行了分析,结果表明,相对于传统布局方案,破片方案更改后改变了药型罩的成型过程,导致爆炸成型弹丸形状变差从而降低了毁伤性能。通过对结构参数影响进行分析,提出了优化方案,解决了破片方案调整后爆炸成型弹丸的成型问题。     

复合战斗部结构参数影响分析

应用AUTODYN仿真软件,对一种复合战斗部方案的EFP成型性能进行了分析,结果表明,相对于传统布局方案,在破片方案更改后改变了药型罩的成型过程,导致EFP形状变差从而降低了毁伤性能。通过对结构参数影响进行分析,提出了优化方案,解决了破片方案调整后EFP的成型问题。     

Selling to strategic and loss‐averse consumers: Stocking,procurement, and product design policies

Motivated by the presence of loss‐averse decision making behavior in practice, this article considers a supply chain consisting of a firm and strategic consumers who possess an S‐shaped loss‐averse utility function. In the model, consumers decide the purchase timing and the firm chooses the inventory level. We find that the loss‐averse consumers' strategic purchasing behavior is determined by their perceived gain and loss from strategic purchase delay, and the given rationing risk. Thus, the firm that is cognizant of this property tailors its inventory stocking policy based on the consumers' loss‐averse behavior such as their perceived values of gain and loss, and their sensitivity to them. We also demonstrate that the firm's equilibrium inventory stocking policy reflects both the economic logic of the traditional newsvendor inventory model, and the loss‐averse behavior of consumers. The equilibrium order quantity is significantly different from those derived from models that assume that the consumers are risk neutral and homogeneous in their valuations. We show that the firm that ignores strategic consumer's loss‐aversion behavior tends to keep an unnecessarily high inventory level that leads to excessive leftovers. Our numerical experiments further reveal that in some extreme cases the firm that ignores strategic consumer's loss‐aversion behavior generates almost 92% more leftovers than the firm that possesses consumers’ loss‐aversion information and takes it into account when making managerial decisions. To mitigate the consumer's forward‐looking behavior, we propose the adoption of the practice of agile supply chain management, which possesses the following attributes: (i) procuring inventory after observing real‐time demand information, (ii) enhanced design (which maintains the current production mix but improves the product performance to a higher level), and (iii) customized design (which maintains the current performance level but increases the variety of the current production line to meet consumers’ specific demands). We show that such a practice can induce the consumer to make early purchases by increasing their rationing risk, increasing the product value, or diversifying the product line. © 2015 Wiley Periodicals, Inc. Naval Research Logistics 62: 435–453, 2015     

舰空导弹引战配合可视化仿真分析方法

提出了一种更加直观的舰空导弹引战配合分析方法,充分利用飞行试验数据和弹道仿真数据,通过引战配合数学仿真计算和可视化仿真,复现了弹目交会时战斗部破片杀伤目标的过程,并在某型舰空导弹飞行试验引战配合分析中得到了应用.     

Bounding the optimal burn‐in time for a system with two types of failure

Burn‐in is a widely used method to improve the quality of products or systems after they have been produced. In this paper, we consider the problem of determining bounds to the optimal burn‐in time and optimal replacement policy maximizing the steady state availability of a repairable system. It is assumed that two types of system failures may occur: One is Type I failure (minor failure), which can be removed by a minimal repair, and the other is Type II failure (catastrophic failure), which can be removed only by a complete repair. Assuming that the underlying lifetime distribution of the system has a bathtub‐shaped failure rate function, upper and lower bounds for the optimal burn‐in time are provided. Furthermore, some other applications of optimal burn‐in are also considered. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2004     

单脉冲测角在BM突防干扰机上的应用

高分辨雷达(HRR)使用目标HRRP检测目标,由此要求弹道导弹(BM)突防干扰机生成的多假目标信号中包含BM弹头HRRP信息,HRRP长度是HRRP的一个重要特征,需要通过测量雷达观测角计算得到,BM突防干扰机自旋,自身三维姿态难以提取,二维单脉冲测角系统难以应用,一维单脉冲测角系统根据自旋特点,可间断地测得雷达观测角,干扰机和BM弹头运动以及干扰机自旋对测角精度影响较小,间断得到的雷达观测角可以用来计算BM弹头HRRP长度,指出了干扰机章动是影响测角精度的主要因素,最后说明了探讨的方法对目前BM突防干扰机设计具有一定实际工程意义。     

鱼雷最大航向估计在反鱼雷中的应用

在悬浮式深弹反鱼雷时,若只能根据声纳兵的经验估计鱼雷距离,如何正确估计鱼雷航向角范围就成为正确布放悬浮式深弹的关键.从直航雷的相遇三角形和尾流鱼雷命中目标条件出发,推导出鱼雷相对舰艇的正常提前角,从而确定鱼雷在被发现点的最大航向角范围,为正确投放悬浮式深弹提供了理论依据.     

现代国土防空末端防御防空导弹的关键技术

现代国土防空末端防御防空导弹的使命是高效率地击爆空袭武器。它的关键技术是精确制导控制技术,能形成高速大破片的定向战斗部技术和高效率的引战配合技术。     

Electronic warfare in the optical band: Main features,examples and selected measurement data

The paper presents the possibilities of, and methods for, acquiring, analysing and processing optical signals in order to recognise, identify and counteract threats on the contemporary battleground. The main ways electronic warfare is waged in the optical band of the electromagnetic wave spectrum have been formulated, including the acquisition of optical emitter signatures, as well as ultraviolet (UV) and thermal (IR) signatures. The physical parameters and values describing the emission of laser radiation are discussed, including their importance in terms of creating optical signatures. Moreover, it has been shown that in the transformation of optical signals into signatures, only their spectral and temporal parameters can be applied. This was confirmed in experimental part of the paper, which includes our own measurements of spectral and temporal emission characteristics for three types of binocular laser rangefinders. It has been further shown that through simple registration and quick analysis involving comparison of emission time parameters in the case of UV signatures in “solar-blind” band, various events can be identified quickly and faultlessly. The same is true for IR signatures, where the amplitudes of the recorded signal for several wavelengths are compared. This was confirmed experimentally for UV signatures by registering and then analyzing signals from several events during military exercises at a training ground, namely Rocket Propelled Grenade (RPG) launches and explosions after hitting targets, trinitrotoluene (TNT) explosions, firing armour-piercing, fin-stabilised, discarding sabots (APFSDS) or high explosive (HE) projectiles. The final section describes a proposed model database of emitters, created as a result of analysing and transforming the recorded signals into optical signatures.     

Numerical simulation of warhead transportation

The new numerical approach for analysis of the warhead transportations is suggested.This approach allows to control the warhead operability before its experimental analysis.The approach is implemented by the adequate models for the software ANSYS.Analysis of the loads at land operations and trans-portations of the warhead by natural roads,water and aviation allows to obtain the maximal values of loads,which are used in numerical simulations of the warhead.These loads give an opportunity to analyze the operability and the fatigue strength of the cartridge warhead.The numerical simulations of the attachments of the warhead combat elements are performed on the basis of the suggested method.The data of the numerical simulations verifies the operability of the fastener system of the warhead combat elements.