引信烧毁模式理论与实验研究

为了验证引信笼式烧毁的可行性和可靠性,进行了引信烧毁实验.针对引信烧毁处理后的两种实验结果进行了理论上的分析.通过强度理论,求解了引信不同状态下烧毁时产生的应力及承受极限.在计算结果的基础上,分析了引信不同状态下烧毁时的烧毁机理和烧毁模式.理论与实验研究表明,引信笼式烧毁能够可靠的完成其内部火工品的销毁.     

报废枪弹的整箱烧毁可行性研究

为了提高报废枪弹的销毁效率,提出了整箱枪弹烧毁的方法.采用有限元模型分析了整箱枪弹烧毁时的受热过程,结果表明:包装箱内不同位置的枪弹具有不同的温度,内装发射药不可能同时达到发火点而爆燃,故可避免整箱枪弹整体爆燃对烧毁容器的破坏;同时,进行了整箱枪弹的烧毁试验,测定了整箱烧毁枪弹时烧毁笼内某点的温度变化,结果表明枪弹可以被可靠地销毁.     

一种具有废气净化功能的危险品自动烧毁系统

针对国防工业及民爆领域危险品的研制、生产、使用及试验过程中产生的废旧残次品,研发了具有废气净化功能的危险品烧毁系统,对烧毁系统、废气处理系统进行了详细阐述,并概括系统设计特点。应用效果表明该系统可用于废弃火工品、爆破器材、烟花爆竹等装药量200g TNT以下的危险品烧毁,对其燃烧后产生的废气进行降温、吸收、除尘处理,可达到安全排放,减少环境污染的目的。     

引信内部传爆药笼式可靠烧毁条件研究

为了验证引信笼式烧毁的可行性和可靠性,实验测定了废旧弹药包装箱的燃烧特性,对烧毁状态下的引信传爆药内部温度场进行了模拟计算,确定了限定性条件下传爆药的临界点火温度;同时测定了报废引信烧毁时传爆药的燃爆延滞期.通过对数值计算结果和实验结果的分析,得到了引信传爆药的可靠烧毁条件.     

废弃含能材料的露天烧毁

为排除安全隐患,废弃含能材料应被及时销毁.本文先明确了适合露天烧毁的含能材料,然后结合工作经验介绍了各类含能材料的烧毁方法,阐述了烧毁现场作业过程中应该把握的准备、铺药、点火和现场清理环节,以防止事故发生.     

车载烧毁系统销毁火工品研究

针对国内外目前销毁火工品的现状和不足,对车载烧毁系统的总体组成、机械部分和控制部分以及该系统的特点进行了详细介绍.该系统解决了目前销毁火工品的不足,提供了一条安全、可靠、彻底销毁"小"、"远"、"散"单位或地方火工品的新思路、新方法.     

基于模糊理论的报废火工品烧毁系统可靠性评判

为了对报废火工品烧毁系统的可靠性进行评价,综合运用系统工程的方法对系统的可靠性进行度量和判断,采用模糊数学和层次分析理论,通过分析影响可靠作业的因素,建立了系统综合评价指标体系,在此基础上利用三角模算子评判模型进行了系统综合评价,并得到了客观、满意的结果.     

气氧/气甲烷针栓喷注器孔型设计仿真研究

为解决针栓喷注器易烧毁的问题,就圆形喷孔孔径比对气氧/气甲烷针栓喷注器头部传热环境和燃烧特性的影响进行了数值仿真研究.结果表明:在给定几何条件下,双排圆形喷孔的针栓喷注器头部最高温度随孔径比增大而减小,而燃烧效率变化微小且均在96％以上.在燃烧室内存在两个大回流区的传统认识之上,研究发现孔径比不小于1时针栓喷注器头部下方还存在一小回流区,该区域轴向推进剂的质量分数较大,对隔绝高温燃气回流避免喷注器烧毁具有重要作用.     

引信内部火工品烧毁机理分析

验证了引信笼式烧毁的可行性和可靠性。针对引信烧毁处理后的两种实验结果，进行了理论上的分析。建立了求解温度场方程的数值解法，编程求解了实验温度下引信传爆药柱温度随时间的变化。在计算结果的基础上．分析了引信内部火工品在不同环境温度下的销毁机理。     

强电磁脉冲对微波场效应管影响的仿真研究

微波场效应管(MESFET)构成的低噪声放大器电路常用于射频前端,是常见的射频模拟电路。该电路在强电磁脉冲作用下易烧毁,从而导致设备失效。使用半导体器件-电路联合仿真器对强电磁脉冲作用下的微波场效应管烧毁过程进行仿真,对失效机理开展研究,为进行强电磁脉冲防护提供依据。研究结果表明:强电磁脉冲达到一定的阙值会导致MESFET烧毁,该阙值与强电磁脉冲的上升时间有关,根据仿真结果可进行强电磁脉冲的屏蔽防护。     

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.     

Method for Measuring Velocity of Warhead Fragments Based on Photoelectric Detection

For measuring velocity and impacting position of single fragment of warhead, a non-contact measuring method is proposed, in which a six-light-screen array, a position indicator, a multi-channel chronograph and a computer are used.The principle of measurement is described. The key device of the system is a light screen array sensor which consists of six light screens allocated with certain geometrical parameters. When the fragment flies through the light screen array, the time of passing through each of the screens is recorded by the multi-channel chronograph. According to the time data and the geometrical parameters of the array, the velocity vector and the location of the fragment can be calculated immediately. The presented method can be used to locate the fragment and to measure the real velocity on its flying direction. It can also be used to measure the velocity of a fragment swarm after the system is engineered further.     

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.     

数码电子雷管中影响点火头性能因素分析

阐述了数码电子雷管中,点火药剂细结晶三硝基间苯二酚铅（LTNR）的制备工艺;从点火药剂的种类、加入黏合剂的质量分数、桥丝直径、点火头的电阻值、防潮漆的蘸涂等方面对点火头性能的影响因素进行了探讨;通过震动试验、并联起爆试验、延期精度检测与考核,试验结果表明：一次性合成的细结晶LTNR是制造数码电子雷管点火头较为理想的点火药剂,按技术要求生产的点火头性能指标能够满足行业标准要求。     

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.     

Design and Implementation of One Missile Visual Simulation System Based on OpenGL

The implementation of a missile＇s visual simulation system is explained that is developed with OpenGL（open graphic library） and the flight path and flight carriage in different stages of the missile are displayed. The establishment problems of the 3D scene are circumstantiated including the construction and redeployment of the model, creation of the virtual scene, setting of the multi-viewports and multi-windows etc. The missile＇s data driver, system flow, the modules and their mutual relations of the missile visual simulation system are discussed. The missile flight simulation results and effect of the scenes are given.     

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.     

Dynamic Encryption Technology in Ad-hoc Networks

A new dynamic encryption application in ad-hoc networks is proposed. The advantages of this method are its being able to use the previous ciphertext as a seed of a new encryption process, rendering the encryption process effective in all communication process by continuous dynamic key generation together with synchronization, and its capability to cut back on system bandages to a greater extent, which is valuable for the ad-hoc circumstance. In addition, the rationality and effectiveness of this novel encryption method have been verified by the test results.     

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.