一种装备维修效益分析方法

运用装备寿命周期费用计算有关知识,为装备维修管理人员提供一种装备维修效益分析方法     

基于四元数法的反辐射武器飞行仿真研究

在开发反辐射武器攻击目标的三维飞行仿真系统中或分析处理三维运动数据时,针对传统的运动姿态旋转方法存在计算繁琐、旋转不均匀性及平衡环锁定等局限问题,采用四元数法可以避免这些局限,并且几何意义明确,计算简单。因此,提出在飞行仿真系统中利用四元数法来实现反辐射武器的运动姿态及飞行速度矢量的旋转,在飞行仿真试验中实现了飞行轨迹变化光滑连续的合理效果,仿真结果表明四元数法简化了矢量旋转计算模型,优化了解算性能,能够很好地应用于反辐射武器飞行仿真试验中。     

光纤在遥控武器站火控系统中的应用

通过对光纤及光纤通讯关键技术和设备的介绍,提出在遥控武器站火控系统中利用光纤传输方式实现系统高速、高带宽视频、总线、IO信号的传输方式。通过光电转换单元的模块化设计,与系统部件有效集成,减少部件数量,优化系统网络。基于CPLD技术的电路设计,有效减小电路板尺寸,缩短设计周期,提高工作可靠性。设计紧凑、合理的光纤旋转连接器及光纤链路形式,有效保证链路的插入损耗,高质量完成信息传输。运用时分复用/解复用技术拓展传输带宽,为系统的升级和扩展预留了充分的空间。结合工程实际提出光纤通讯目前存在的主要问题并给出相应的解决方案。     

Cell-type continuous electromagnetic radiation system generating millimeter waves for active denial system applications

The cell-type continuous electromagnetic radiation system is a demonstration device capable of generating high-power millimeter electromagnetic waves of a specific wavelength and observing their effects on living organisms. It irradiates a biological sample placed in a 30 × 30 × 50 cm³ cell with electromagnetic waves in the 3.15-mm-wavelength region (with an output of ≥1 W) and analyzes the temperature change of the sample. A vacuum electronic device-based coupled-cavity backward-wave oscillator converts the electron energy of the electron beam into radiofrequency (RF) energy and radiates it to the target through an antenna, increasing the temperature through the absorption of RF energy in the skin. The system causes pain and ultimately reduces combat power. A cell-type continuous electromagnetic radiation system consisting of four parts—an electromagnetic-wave generator, a high-voltage power supply, a test cell, and a system controller—generates an RF signal of ≥1 W in a continuous waveform at a 95-GHz center frequency, as well as a chemical solution with a dielectric constant similar to that of the skin of a living organism. An increase of 5 °C lasting approximately 10 s was confirmed through an experiment.     

Preparation of ammonium nitrate-based solid composite propellants supplemented with polyurethane/nitrocellulose blends binder and their thermal decomposition behavior

To improve the performance of solid composite propellants (SCPs) supplemented with ammonium nitrate (AN) as an oxidizer, the incorporation of energetic ingredients such as explosives, energetic binders or catalysts is a common effective approach. For this purpose, polyurethane (PU), a typical inert binder, was mixed with nitrocellulose (NC) as an energetic polymer. Numerous composite solid propellant compositions based on AN and NC-modified polyurethane binder with different NC ratios were prepared. The prepared formulations were characterized using Fourier transform infrared spectroscopy (FTIR), RAMAN spectroscopy, X-ray diffraction (XRD), electron densimetry, thermogravimetric (TG) analysis, and differential scanning calorimetry (DSC). A kinetic study was then performed using the iterative Kissinger-Akahira-Sunose (It-KAS), Flynn-Wall-Ozawa (It-FWO), and non-linear Vyazovkin integral with compensation effect (VYA/CE) methods. The theoretical performances, such as theoretical specific impulse, adiabatic flame temperature, and ideal exhaust gaseous species, were also determined using the NASA Lewis Code, Chemical Equilibrium with Application (CEA). Spectroscopic examinations revealed the existence of NC and full polymerization of PU in the prepared propellants. According to density tests, the density of the propellant increases as the nitrocellulose component increases. According to the thermal analysis and kinetics study, the increase in NC content catalyzed the thermal decomposition of the AN-based composite solid propellants. Based on the theoretical study, increasing the amount of NC in the propellant increased the specific impulse and, as a result, the overall performance.     

舰艇近程武器系统对空防御作用与发展

近程武器系统已发展成为舰艇对空防御的最后一道防线。简要介绍了舰艇近程武器系统(CIWS)的组成及特点,主要叙述了CIWS在舰艇对空防御中的重要作用,并提出了未来发展的主要方向。     

末端防御武器系统的人机一体化

如何实现人在末端防御武器系统运行中所应该起的作用,并为实现这些作用提供必需的保障,对末端防御武器系统的研制、试验和使用至关重要。要做到这一点,应该通过自顶向下的人机一体化的需求分析,确定人在系统中所应完成的作用并且明确为完成此作用而对系统提出的要求。系统的设计应该遵循人机一体化的原则,提高系统的自动化程度,减少人的工作负荷,减少人员配备。系统要保障人为完成其作用而所需的条件,向人提供有关完成其作用所必需的知识,使人在执行其所担负的任务中不出差错。     

基于效费比的武器目标分配

有效武器目标分配(WTA)是防空阵地的核心。分析了目标毁伤收益、武器损伤关键战术指标因素,提出基于效费比的WTA评价标准,建立了针对多目标的WTA模型,并研究了用遗传算法求解模型的方法。该遗传算法通过设计一种武器目标分配的染色体编码,利用最优保存策略选择运算、均匀交叉运算、非均匀变异运算来求解。仿真结果验证了模型的合理性和算法的有效性。     

惯性技术发展及应用需求分析

分析了国内外惯性测量装置及器件的发展现状和趋势,研究了武器装备对惯性技术的需求,认为使命任务的不断更新对惯性技术的发展提出了更高的要求,惯性产品作为武器装备的核心技术必须注重其精确性、高可靠性、长航时、大动态范围及经济性。研究成果对惯性技术在各种武器系统中的应用具有指导意义。     

基于DCSP的编队武器兼容性约束协调

编队武器兼容性约束协调,是一个典型的求解分布式约束满足问题的过程。针对这一特点,建立了编队武器兼容性约束满足问题模型,提出了一种基于异步回溯的分布式约束满足算法。该算法运用异步回溯获得一个初始可行解,然后以作战效能最优为原则增添新的方案,并进行约束一致性检查,最终得到满意的编队武器运用方案。仿真验证了算法的可行性。