基于钹式压电阵列的新型引信发电装置设计制作及试验测试

针对现有引信冲击式压电发电机电能输出小、发电时间短等问题,设计制作了一种基于钹式压电换能器阵列的新型引信发电装置。将压电发电理论与振动理论相结合建立了其发电模型,并利用所构建的冲击试验装置模拟弹药发射环境,对其发电能力进行了测试。研究结果表明,该发电装置能有效收集发射环境中的冲击能,并利用质量弹簧组件及钹式换能器阵列将其转换为持续的电能输出。当冲击加载为209.05 g时,其电能输出时间达到2.499 s。     

气动柔性带压电发电机

针对现有电源体积大不能满足子弹药引信要求的问题,提出一种气动柔性带压电发电机。该发电机为带状,用导电胶将PVDF压电薄膜粘接在钛合金基底上,一端固定在子弹上,占用体积极小,在子弹下落时产生的迎面气流激励下振动发电。理论分析与实验表明:该发电机能够满足子弹机电引信电能需求,理论谐振频率与实验测得的谐振频率相近,不同基底发电机产生的开路电压有很大的差别。     

子弹药引信发展探讨

本文简要介绍了子弹药引信发展情况、分析了目前子弹药引信存在的问题和原因,同时对子弹药引信实现自毁的技术关键、途径进行了探讨,最后提出了发展子弹药引信的几点建议。     

基于转子继续转动的安全状态可恢复隔爆机构

针对子母弹在使用过程中存在未爆弹的问题,在力求解决瞎火子弹药造成的安全隐患的基础上,开展了关于子弹药引信自失效的研究。提出了一种控制引信恢复安全状态的途径,基于转子继续转动的安全状态可恢复隔爆机构。以火箭发射的子弹药引信为研究平台,结合子弹药引信机电式自主恢复隔爆机构的相关理论,对引信机构进行改进,通过对该试验样本进行静、动态测试,并针对试验中引信机构出现的问题进行改进,使得该引信机构能够可靠地实现自主恢复隔爆功能。     

一种适用于子弹药引信的预储能 离心作用机构的设计与分析

针对联合国对子弹药未爆弹率及功能的要求,结合国内子弹药引信的发展现状,提出了对原有子弹药引信进行机械结构改进的方案。结合子弹药引信的结构特点及其工作环境特点,设计了一种预储能离心作用机构,并对其作用原理和作用过程进行了详细阐述。对该机构进行受力分析,按子弹药工作过程分阶段对其进行了可靠性计算和动力学仿真。计算和仿真结果表明,预储能离心作用机构能够可靠作用,达到了设计目的。     

集束子弹药引信自失效、自失能技术路线及典型设计可靠度分析

分析了集束子弹药引信自失效、自失能可采取的技术路线;重点介绍了2 种典型的集束子弹药引信自失效路线;建立了一类集束子弹药引信可靠度模型;应用实验结果求解了引信各模块的可靠度,并应用Monte Carlo 法进行了综合发火率和自失效率仿真。实验和仿真结果说明:引信自毁/ 自失效模块的可靠度指标应高于发火装置的可靠度指标;多管火箭炮系统(MLRS)发射子弹药引信综合发火率较难达到99%;自失效率应单独考核。     

舰船携行弹药引信安全风险分析

针对舰船携行弹药引信使用特点,分析了舰船力学环境、电磁环境、热环境等典型影响因素及其效应,提出了舰船携行弹药引信存在的主要安全性问题,并给出了解决措施。     

子母弹子弹药引信自毁技术

对子弹药引信增加自毁模块，提高自毁作用率，是提高子弹药综合作用率减少未爆弹药的主要措施之一，也是世界各国子弹药引信技术的主要发展方向；火药定时自毁、电子定时自毁和机械即时自毁是其中主要三种自毁技术，应用也最为广泛。     

不依赖目标的引信自毁技术与发展建议

针对传统子弹药作用可靠性不能满足子弹药未爆弹率不高于1%要求的问题,提出了不依赖目标的引信自毁技术与发展建议。通过分析国内外子弹药发展现状,指出子弹药引信应加装"三自"(自毁、自失效或自失能)装置,特别是加装不依赖于目标的自毁机构,以使子弹药在复杂作战环境下满足联合国特定常规武器公约CCW的要求,并促进我国子弹药更新换代。     

机电引信碰击开关的电磁屏蔽方法

针对早期配用机电引信的弹药在电磁干扰时可能导致弹药出现弹道炸的问题,提出了利用电磁屏蔽罩对弹药进行屏蔽改进的方法。该方法可不改变原有弹药的内部机械结构和电路,采取在弹药的头部碰击开关加装电磁屏蔽罩来实现对弹药的屏蔽改进。试验表明,加装电磁屏蔽罩的弹药电磁屏蔽能力显著增强,提高了弹药抗电磁干扰的能力。     

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.     

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.     

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.     

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.     

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.     

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.     

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.     

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.