雷管激光编码中应注意的问题及应对措施

对雷管编码是公安部和国防科工委为加强对雷管的生产和销售管理,有效预防雷管流向社会,维护公共安全,要求雷管生产厂家采取的有效措施。由于具有高效、灵活、自动化程度高的特点,加上良好的适用性、可靠性、防伪性、耐久性,激光编码是目前雷管编码普遍采用的方式。     

雷管激光编码中的防爆保护系统

分析了雷管激光编码过程中引起爆炸的主要原因:扫描系统误动作、激光功率过大、同一发雷管上的激光停留时间过长和计算机死机.设计了防爆保护系统,介绍了实现扫描系统误动作保护、激光功率过大保护、同一发雷管上的激光停留时间过长和计算机死机保护的原理和方法.     

YE炸药在导爆管雷管中的应用研究

近几年来，国内不少单位对无起爆药雷管进行了研究，并取得了一些成果。9654厂和南京理工大学联合研制的YE型无起爆药普通瞬发电雷管，经过两年多的试验，初步研制成功。这种无起爆药雷管和其它无起爆药雷管的主要区别是，用乙二胶二高氯酸盐（简称YE）炸药代替DDNP装填工业电雷管。该药剂的主要优点是，机械感度低、操作安全、生产工艺简便、生产过程无需进行废水处理、对环境无污染。缺点是，火焰感度低、易吸湿，目前用它装填火雷管有一定的困难‘为了拓宽YE炸药的使用范围，将其装填在导爆管雷管中，首先要解决雷管所需初始能量大和…     

冲装加强帽装置的设计与研制

在对雷管自动装配机的现状、装配机的特点和功能需求进行分析的基础上,提出了冲装加强帽装置的系统设计方案.详细描述了装置的动作过程和运行时问题的解决方案,并以连续批量生产为目标开展了关键技术的试验研究.结果表明:该装置达到了预期的技术指标和效果,满足了雷管自动装配机的生产要求.     

机械火工品设计与生产过程中的感度控制研究

基于机械火工品可靠性设计理论,建立了机械火工品设计和生产过程中的感度控制方法,系统提出了感度控制的实施步骤。以某一针刺雷管为例说明了感度控制范围的计算与实施,并对其可靠性进行了验证。本研究为高可靠性机械火工品的生产提供了技术参考。     

多点阵列冲击片雷管仿真与试验研究

对多点起爆爆轰波碰撞和超压形成的影响因素进行了仿真计算,分析了多点阵列爆轰波叠加的作用规律。设计了基于爆炸箔的多点阵列冲击片雷管,进行了输出性能试验,验证了部分仿真结论。对多点阵列冲击片雷管起爆三氨基三硝基苯(TATB)钝感炸药进行了试验。试验结果表明,多点阵列冲击片雷管能够使TATB钝感炸药完全爆轰。     

用于起爆系统的无机炸药——配位络合物（英）

介绍了含多氮杂环配位体的过氯酸盐系列络合物的合成研究。主要对新合成的化合物进行了性能研究及在安全电雷管和激光雷管的应用研究。     

激光起爆引信及其关键技术

基于光纤传输高峰值功率脉冲激光驱动飞片起爆技术，提出了一种新概念引信——激光起爆引信的基本概念。与电起爆引信相比，激光起爆引信在能量形式、起爆机理、组成结构等方面有很大的不同，符合引信技术从机械电子到光电子的发展脉络，是引信设计创新、性能优化、应用创新的重要方向之一。论述了激光起爆引信在核武器以及先进常规武器中的潜在应用价值，根据参考文献总结出激光起爆的三种实现方式。激光起爆引信的关键单元，包括小型化激光器、光纤传能、激光冲击片雷管等，简要讨论了相关的科学研究、总体设计和单元技术。     

机械陀螺仪到光学陀螺仪的进展

因半导体技术的进展,陀螺仪系统的基础由机械平台发展到捷联技术,用数字计算机和软件代替机械元件。现在开发出使用捷联式的新型陀螺仪,如环形激光纤螺仪和光纤陀螺仪,部分来自成熟的机械陀螺仪设计,部分归功于新的光学领域的成果。这些捷联式新型陀螺仪,目前都进入生产阶段。     

基于磁电雷管直流起爆的分级射孔技术

针对分级射孔中使用大电阻雷管等直流雷管存在的安全隐患及缺陷,设计了基于磁电雷管的直流起爆电路,将磁电雷管应用在分级射孔作业中的点火系统。通过采用直流供电编码控制的形式起爆磁电雷管,以进一步提高系统安全性。油田现场应用表明该设计安全可靠,效果良好。     

Nitrosation and Nitration of Tetraacetyldibenzylhexaazaisowurtzitane

Tetraacetyldibenzylhitane (TADBIW) was subjected to debenzylation by nitrosating with inorganic materials available commercially to synthesize tetraacetyldinitrosohexaazaisowurtzitane (TADNSIW). TADNSIW was purified, and its structure was determined by FTIR, 1H NMR, MS and element analysis. The debenzylation reaction of TADBIW gave quantitative benzaldehyde as a by-product. This indicates that the reaction produces an imine cation as an intermediate. Hexanitrohexaazaisowurtzitane (HNIW) was prepared from unpurified TADNSIW with the yield over 96.0 % and the purity more than 98.0 %. And the mechanism of the reaction from TADNSIW to HNIW is proposed to be oxidation of nitroso and nitration of acetyl on the molecule of TADNSIW, This reaction system involved is simple, and the reaction can complete within a short time and under mild conditions. The product can be easily to separate and the waste disposed readily.     

A Robust Algorithm for Watermarking 2D Vector Maps with Low Shape-Distortions

The technique of watermarking has been introduced into 2D vector maps for many potential applications such as protecting the copyright of important GIS （geographical information system） data and tracing the data source of military maps. In most previous works, although the validity of the map data could be preserved during the embedding procedure, the shape-distortions of the map elements are usually neglected which would tend to degrade the invisibility of the watermarking schemes. A shape-preserving algorithm for watermarking 2D vector maps is presented in this paper. A 1D distance sequence extracted from the original map is adopted as the cover data instead of 2D coordinates. A watermark bit is represented by changing the distributions of the cover data. The embedding procedure induces lower shape-distortions than in former works. Experimental results indicate better invisibility of the proposed scheme, as well as its robustness to certain attacks such as map simplification, interpolation, additive noise and most geometric transforms.     

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.     

Improvement and Experiment of the Reamer in Vibra Cutter Against Wave Edge of Titanium Sheet Alloy Parts

By analyzing the influencing factors of part quality making of sheet alloy of titanium by vibra cutter, the shape of upper reamer is set as cylinder and wedge-shaped form, and the lower reamer as plain and hemicycle form, and its main structural parameters are defined as well. Then it is validated further that such improved vibra cutter reamer can be used to process curve-edged parts of titanium alloy sheet. The experimental result shows that the titanium alloy sheet parts processed by above equipment have no sharpen angles for convex parts and evident crevasse of concave-edged part. In summary, such improvement can eliminate the free-waved edge and improve the manufacture quality of titanium alloy sheet parts greatly.     

Experimental Study on the Small Flyer Initiating Behavior of Fine-grained Explosives

The initiating behavior of fine-grained explosives by small flyer is studied. The diameter of small flyer in this device is 1 ram. The test results indicate that the granularity of explosives has great effect on its flyer initiating sensitivity.The flyer initiating sensitivity of the fine-grained explosives is higher and the critical initiating energy is lower than that of common explosives. For common explosive, the flyer initiating sensitivity increases as the density is reduced. But for the fine-grained explosive, the test results are exactly opposite.     

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.     

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.     

Robust Graded Sliding Mode Tracking Control for Low Speed Spinning Ballistic Missiles

The nonlinear dynamic model of spinning ballistic missiles is established during the first boosting phase of the missile. Based on the conventional backstepping sliding mode control and the assumption of a two time-scale separation of missile dynamics, a graded sliding mode controller is designed with two sub-sliding surfaces which have invariability to external disturbances and parameter perturbations, and a matrix which comprises three first order low pass filters is introduced to prevent ＂explosion of terms＂. Owing to the upper bounds of the uncertainties are difficult to obtain in advance, adaptive laws are introduced to estimate the values of the uncertainties in real-time. Eventually, the numerical simulation results given to show the proposed controller can ensure the steady flight of missiles.     

A Study on the Estimation of Aeroheating upon the Warhead Nose at Supersonic Speed

An expression for estimating the aeroheating on a warhead nose at different supersonic speeds is proposed by incorporating CFD （computational fluid dynamics） and the least-square method. Compared with the traditional estimation formula, the expression is more accurate, convenient and can be used in the optimized design of warheads. The error from the result obtained in the test of a ball cartridge flight is less than 3 %. It satisfies the engineering requirements.