高起爆能力的新结构传爆药柱研究

在分析炸药冲击起爆理论的基础上,研究了凹球形和半球形传爆药柱装药结构.利用主装药变组分实验方法对新结构传爆药柱与常规圆柱形传爆药柱的起爆威力进行了对比实验.研究表明,新结构传爆药柱较常规圆柱形传爆药柱的起爆威力明显提高.研究结果对于解决钝感主装药的可靠起爆问题具有现实意义.     

钝感延期传扩爆装置

研究了以钝感耐热猛炸药HNS作为传递爆轰的微秒级延期通道，并利用HNS和A5炸药作为主要装药扩大爆轰能量，直到满足起爆战斗部的目的，从而实现爆炸过程的微秒量级的延时，这种装置因为采用了HNS和A5许用传爆药，可用于直列式微秒传爆序列，实现串联或多路微秒延期起爆，无需隔爆装置，简化弹药结构。     

高起爆能力的新结构传爆药柱研究

在分析炸药冲击起爆理论的基础上，设计了环形和环锥形传爆药柱装药结构。利用轴向钢凹实验方法对新结构传爆药柱与常规圆柱形传爆药柱的起爆威力进行了对比实验。研究表明：新结构传爆药柱较常规圆柱形传爆药柱的起爆威力明显提高。研究结果对于解决钝感主装药的可靠起爆问题具有现实意义。     

环形传爆药柱多点起爆数值模拟及威力测试

为了提高传爆药柱起爆钝感弹药的能力,根据冲击波汇聚技术原理设计了环形传爆药装药结构.配合环形装药的尺寸,根据小尺寸装药爆轰理论设计了4点和8点同步起爆网络.用ANSYS/LY-DYNA软件分析起爆点个数对环形传爆药柱输出波形的影响,并进行了试验验证.结果表明,利用多点同步起爆网络起爆环形传爆药柱能有效提高传爆药柱的输出威力,在保证较小同步时间偏差的情况下,增加起爆点个数有利于提高环形传爆药柱的输出.     

反再人头战斗部

反高空高速再入大气层目标的导弹战斗部,由近炸引信起爆,其组成为:形成破片雨的壳体、外部装药(带传爆系列)和内部装药。内外部装药由一径向空间隔开。内部装药也有传爆系列,它的爆轰波可穿过径向空间起爆外部装药,但外部装药的爆轰波却不能起爆内部装药,两部分装药的安置形状能使壳体形成各向同性的辐射状破片雨。     

破片对模拟聚能战斗部装药冲击起爆研究

研究了破片对模拟聚能战斗部装药的冲击起爆问题.针对破片对聚能战斗部作用的工程问题进行等效模型简化,设计了模拟战斗部靶标及破片撞击试验方案,进行了1000～1500m/s速度范围内的冲击起爆试验,获得了装药被引发反应特性.与数值模拟进行对比,给出了破片对模拟聚能战斗部装药撞击起爆速度阈值.研究结果对反聚能装药战斗部破片杀伤元素设计具有指导意义.     

传爆序列对双用途子弹动破甲性能的影响

为满足双用途子弹动破甲性能的要求,根据传爆序列理论,在不同子弹结构及导爆管装配方式下进行动破甲性能试验.试验结果表明:在子弹装药条件限制不变的前提下,影响导爆药与主装药能量匹配的主要因素为传爆机理、导爆药感度、起爆能量、起爆面积及子弹壳体材料.根据试验结果,对钢珠子弹体结构中的导爆管进行了改进设计.     

猛炸药钝感引爆序列

一种起爆钝感猛炸药的通用钝感引爆序列。这种钝感引信序列使用冲击片箔起爆亚克量的五种炸药，如像ＨＮＳ－ＩＶ或ＰＥＴＮ。这小量的炸药驱动一较大的金属冲击片撞击钝感炸药的传爆药。该传爆药起爆五种较大旺的炸约，然后起爆钝感猛炸药。     

破片撞击损伤装药点火数值模拟

为了研究冲击波和破片撞击复合作用下装药点火机理,采用先冲击波损伤装药、后破片撞击已损伤装药的实验方法,获得受冲击装药点火对应的破片临界撞击速度为446.9～449.4 m·s~(-1)。采用LS?DYNA程序,基于节点约束?分离法对装药冲击波损伤进行数值模拟,而后用完全重启动方法对冲击损伤装药在破片撞击下的点火反应过程进行二次模拟,通过"升?降"法得到受冲击损伤装药点火对应的破片临界撞击速度为452～453 m·s~(-1),实验和数值模拟结果吻合较好。结果表明,可采用节点约束?分离方法和完全重启动数值模拟技术进行冲击波和破片复合作用下装药点火数值模拟;受冲击波损伤装药的破片撞击点火临界速度明显要低于未损伤装药,装药受损伤状态对破片撞击感度起到了敏化作用,从而降低了破片撞击点火的临界速度。     

破片对带壳装药冲击起爆的数值仿真

针对弹药可能会受到多发破片的撞击作用影响,对单个和多个破片撞击带壳装药的侵彻效果进行仿真。 运用Autodyn-3D 软件建立有限元模型,模拟不同形状的单破片及双破片撞击带壳装药、冲击起爆夹层炸药的过程, 计算其撞击带壳装药的阈值速度,并分析两破片不同间距对冲击带壳装药响应程度的影响,得出不同情况下冲击起 爆带壳装药的阈值速度和变化规律。结果表明：直径、阈值速度和双破片的间距对带壳装药的冲击起爆有一定的影 响,随着间距的增大,压力峰值减小,衰减变快。     

Stability of the Third Generation Intensifier under Illumination

The stability under illumination of transmission-mode GaAs photocathode sealed in the third generation intensifier is investigated by use of spectral response testing instruments. The variations of spectral response with the illumination times under weak and intense illumination are compared. The variations of photoemission performance parameters are also characterized. The results show that during initial several weak illuminations photocathode behaves no evident decay and a maximum sensitivity is achieved, while under intense illumination the sensitivity of photocathode begin to decrease largely at the first illumination. The calculated performance parameters show that the variation of surface escape probability with illumination times is a direct cause of instability of photocathode. It is also found that under intense illumination peak wavelength is moved towards short-wave and peak response is decreased, which shows that the ability of long-wave response of photocathode is decreased.     

Open Rule-setting System Applied to Conceptual Design of Engines

Open rule-setting method advanced in this paper concentrates on providing designers of engines with a convenient way to express their design innovations and develop the expected prototypes in the early CAD stage, and constitute effective models for the following analysis process of CAE and CAPP. The problems arisen in the process of conceptual design with the traditional experience-based development method are analyzed. Based on those analyses, open rule-setting method is presented and some associated technical problems are discussed. The functional framework of open rule-setting system was built as software engineering methods. The speciality of the engine product as a kind of complex product and the requirement of the engine product based on its structural particularity to rule-setting system are considered carefully. A demonstration is supplied to illustrate how the open rule-setting method enhances the efficiency and quality of the engine conceptual design.     

Research on Linux Network Device Driver

By analyzing the working principle of Linux network device driver, discussing the Linux network driver structure and its key technologies, the general network driver structure and its design methodologies in Linux system are summarized. Through modifying the network device driver of Linux device driver 3rd version snull, c and improving the COW technology, the Zero-Copy technology in Linux （kernel version 2.6.11 ） is implemented. In the end, the success test tells us that the thorough analysis of network device driver is the foundation of many applications, and it also provides a certain improvement to a lot of real applications, even to military application development.     

Passive Acoustic Radar for Detecting Supersonic Cruise Missile

A Passive Acoustic Radar is presented as a necessary complement to electromagnetic wave radar, which will be expected to be an effective means for detecting cruise missiles. Acoustic characteristics of supersonic flying projectiles with diverse shapes are expounded via experiment. It is pointed out that simulation experiment could be implemented using bullet or shell instead of cruise missile. Based on theoretical analysis and experiment, the ““acoustic fingerprint““ character of cruise missile is illustrated to identify it in a strong noise environment. After establishing a locating mathematical model, the technique of acoustic embattling is utilized to resolve a problem of confirming the time of early-warning, considering the fact that velocity of sound is much slower than that of light. Thereby, a whole system of passive acoustic radar for detecting supersonic cruise missile is formed.     

Algorithm for Multi-laser-target Tracking Based on Clustering Fusion

Multi-laser-target tracking is an important subject in the field of signal processing of laser warners. A clustering method is applied to the measurement of laser warner, and the space-time fusion for measurements in the same cluster is accomplished. Real-time tracking of multi-laser-target and real-time picking of multi-laser-signal are introduced using data fusion of the measurements. A prototype device of the algorithm is built up. The results of experiments show that the algorithm is very effective.     

Super-resolution Restoration of Remote-sensing Images

A novel image restoration scheme, which is super-resolution image restoration algorithm Poisson-maximum-afterword-probability based on Markvo constraint （MPMAP） combined with evaluating image detail parameter D, has been proposed. The advantage of super-resolution algorithm MPMAP incorporated with parameter D lies in the fact that superresolution algorithm MPMAP model is discrete, which is in accordance with remote-sensing imaging model, and the algorithm MPMAP is proved applicable to linear and non-linear imaging models with a unique solution when noise is not severe. According to simulation experiments for practical images, super-resolution algorithm MPMAP can retain image details better than most of traditional restoration methods; at the same time, the proposed parameter D can help to identify real point spread function （PSF） value of degradation process. Processing result of practical remote-sensing images by MPMAP combined with parameter D are given, it illustrates that MPMAP restoration scheme combined PSF estimation has a better restoration result than that of Photoshop processing, based on the same original images. It is proved that the proposed scheme is helpful to offset the lack of resolution of the original remote-sensing images and has its extensive application foreground.     

Design and Simulation of TF and TA Controller for Missile

A nonlinear terrain following(TF) and terrain avoidance(TA) controller is proposed for missile control systems. Based on classical TF algorithm (adaptive angle method), a new method for TF controller is proposed by using angle of attack. A method of obtaining terrain outline data from digital elevation map (DEM) for TF control is discussed in order to save store space. A TA algorithm is proposed by using bank-to-turn technique. The block control model, which is suitable for backstepping design, is given for nonlinear model of missile. Making full use of the characteristics of the system and combining block control principle and backstepping technique, a robust controller design method is proposed. Uncertainties in every sub-block are allowed, and can be canceled by using the idea of nonlinear damping. It is proved that the state tracking errors are converged to a neighborhood of the origin exponentially. Finally, nonlinear six-degree-of-freedom simulation results for the missile model are presented to demonstrate the effectiveness of the proposed control law.     

Design and Analysis of Test Schemes of Static Postponing Time on Shrapnels Used to Riot Control

The test scheme of static postponing time given in our actual national military test standard on shrapnels used to control riot is a nine-point test scheme on the combined action of three kinds of temperatures and three kinds of pressures,the consumed ammunitions are more excessive. Statistic analysis and tentative checkout about a lot of test data are done,feasibility gists are put forward for optimizing of the test design scheme. The optimizing design and data analysis of test scheme of the item are done by managing uniformity design theory, two scientific and reasonable six-point test schemes are confirmed. The feasibility and reliability of the optimizing design schemes put forward above are proved ulteriorly by test validating. The gained schemes not only have good design uniformity and little ammunition wastage and meet the test demand, but also have better forecast ability for the result data of other points using the mathematic models from the actual test points.     

Influence of Installing Error on the Surface Shape Precision of the Axial Symmetry Aspheric Workpiece in Lapping

A method to calculate the surface shape error, which is caused by the installing error between the workpiece and the lapping tool in the process of form lapping, is proposed. The mathematical model which the installing translation error influences on the workpiece surface shape error is established. The changing rule of the error is simulated through the calculating example of the paraboloid workpiece. The results indicate that the surface shape error of the workpiece is increasing with the increase of the installing translation error, it is also increasing gradually along the center point of the curve surface to the edge, and the influence is severer to the curve surface with great curvature than that of the small curvature when the translation error is the same.     

Experimental Research on Output Performances of Giant Magnetostrictive Actuator

The paper introduces the performances of magnetostrictive actuators and its applications, discusses the design methods for the structure and internal magnetic circuit of a giant magnetostrictive actuator, and makes tests on the output displacement and force characteristics for an actuator using homemade magnetostrictive material. The experimental result shows that the actuator has satisfactory output precisions and ranges in transient and stable states, and can be used in lowfrequency vibration control system of precise equipment.