Formulation development and characterization of cellulose acetate nitrate based propellants for improved insensitive munitions properties

Cellulose acetate nitrate (CAN) was used as an insensitive energetic binder to improve the insensitive munitions (IM) properties of gun propellants to replace the M1 propellant used in 105 mm artillery charges. CAN contains the energetic nitro groups found in nitrocellulose (NC), but also acetyl functionalities, which lowered the polymer's sensitivity to heat and shock, and therefore improved its IM properties relative to NC. The formulation, development and small-scale characterization testing of several CAN-based propellants were done. The formulations, using insensitive energetic solid fillers and high-nitrogen modifiers in place of nitramine were completed. The small scale characterization testing, such as closed bomb testing, small scale sensitivity, thermal stability, and chemical compatibility were done. The mechanical response of the propellants under high-rate uni-axial compression at, hot, cold, and ambient temperatures were also completed. Critical diameter testing, hot fragment conductive ignition (HFCI) tests were done to evaluate the propellants' responses to thermal and shock stimuli. Utilizing the propellant chemical composition, theoretical predictions of erosivity were completed. All the small scale test results were utilized to down-select the promising CAN based formulations for large scale demonstration testing such as the ballistic performance and fragment impact testing in the 105 mm M67 artillery charge configurations. The test results completed in the small and large scale testing are discussed.     

Performance analysis and design of loitering munitions:A comprehensive technical survey of recent developments

Loitering munitions are increasingly used in armed conflicts. An extensive database of loitering munitions is developed based on information available in the public domain. This database includes dimensions, weights, and performance parameters such as flight endurance and communication range.Based upon this dataset, 6 categories of loitering munitions are identified and statistical trends in the form of equations are provided for each category. The statistical trends are supported by aircraft pe...     

Country Survey XIII: Japan's security posture and defense industry prospects

Defense budgets in Japan have been complicated compromises from numerous inputs ‐ including threat perceptions, domestic industrial/technological base development, support for the bilateral security treaty with the United States and internal bureaucratic politics ‐ but with the fall of the former Soviet Union, the clearest justification for higher spending disappeared. Double‐digit defense spending increases that were common in the 1980s have been replaced by annual increases lower than present inflation rates, resulting in negative real growth in the country's defense budget. Domestic economic problems and consistent government pressures for smaller budgets have further slowed annual growth in total spending and have contributed to lower procurement budgets. As a result, the domestic Japanese defense industry is facing far more constrained conditions from the growth years of a decade before.

Government policymakers are examining Japan's regional security environment as well as its alliance with the United States to determine the appropriate course for the country to take in the coming years. The formal security treaty with the United States is likely to remain a major element of government positions, but other aspects of the country's overall security posture are open to debate. Perceptions of a reduced threat environment are fueling additional pressures for defense budget cuts.

The domestic defense industry seeks means to assure its survival in domestic defense markets in this constrained environment. Expansion into overseas markets to offset declining domestic markets is an option that currently is constrained by policy restrictions on arms exports. Industry is advocating re‐examination of those policies and unlike earlier years, government appears willing to respond positively but cautiously to this lobbying.     

信息化战争高级形态与高级信息武器装备的概念研究

本文从分析信息化战争和信息武器装备着手,引出了信息化战争初级形态和信息化战争高级形态的定义,并分析了信息化战争初级形态和初级信息武器装备以及信息化战争高级形态和高级信息武器装备的特点和作用机理;指出信息化战争高级形态和高级信息武器装备是历史发展的必然,要注重其概念研究,运用新思路、新方法来研究信息化战争高级形态.并提出了战争设计工程这种研究信息化战争高级形态的好方法。     

An informal framework to aid the analysis and design of military posture

The design of military posture is an exercise in confronting potential enemies’ capabilities within the context of geographic, technological, temporal, political and economic constraints. No formal model is capable of encapsulating the essentials of so complex an environment for closed or simulated analysis, but it is useful to have an informal framework within which to reason interactively within these dimensions.

This paper presents such a scaffolding, patterned on the notion of a military posture as the output of an economic process whose structure reflects important determinants of the characteristics and extents of weaponry and expenditures that are appropriate to the environment within the feasibility set determined by the constraints. The analysis remains at an abstract level, but it does highlight the important shifts toward preparation for littoral warfare, greater reliance on reserve rather than active forces, and necessary changes in missions among military departments.     

先进制造技术与表面工程

介绍了表面工程的最新发展,表面工程与先进制造技术的关系,表面工程的学科体系与特色,表面工程在节能、节材、降耗和高新技术发展方面的作用.并提出了对发展表面工程的建议.     

中国共产党与人民空军

本文着重研究中国共产党创建和运用人民空军的理论与实践 ,总结中国共产党领导人民空军建设与运用的经验 ,论述中国共产党人民空军理论的基本内涵、科学体系、理论价值和重大指导意义 ,揭示国家利益和军事斗争需求决定人民空军建设与运用的客观规律性 ,展现中国共产党从维护国家利益出发、从客观实际情况出发、从军事斗争需要出发、从战略全局出发建设与运用人民空军的思维特点和高超的指导艺术 ,探讨新世纪新阶段以中国共产党人民空军理论为指导加强空军建设的若干重要问题。     

武器装备用高新材料技术综述(续前)

2.武器装备用密封材料 军用车辆,特别是坦克装甲车辆与其他装备的密封问题一直困扰着武器装备的发展,部件体积虽小,但极容易出问题。世界上武器装备,特别是航天、航空装备80％以上的事故来自密封件。故而加强密封材料的研制刻不容缓。当前密封材料发展的特点是:     

坚持战斗力标准强化公安警卫部队的军事业务训练

警卫人员的军事、业务和技能训练,事关公安警卫部队的全面建设和长远发展,事关警卫人员综合素质的提高和警卫任务的圆满完成.如何适应新时期警卫工作的需要,全面提高公安警卫部队的整体战斗力,是当前和今后一个时期公安警卫部队亟待研究解决的现实课题.结合公安警卫部队的实际,对警卫人员军事、业务训练的重要作用、管理机构、组织实施及训练大纲要求作了阐述.     

先进文化的育人功能及内在机理

先进文化具有强大的育人功能 ,主要是科学认知的导向作用、高尚道德的熏陶作用、健康情感的启迪作用、创新才能的锻造作用。先进文化育人功能的内在机理表现在 :传播是先进文化功能释放的途径 ;接受是先进文化功能实现的关键 ;教化是先进文化功能发挥的桥梁。     

基于证据理论的常规导弹阵地生存防护研究

着眼于阵地生存防护对策分析中的不确定性,提出了一种基于证据理论判别来袭武器类型的方法,通过对武器威胁度的评估,建立了来袭武器威胁等级判据,构建了详细的生存对策,可为常规导弹阵地生存防护决策提供有效的辅助支持.     

企业采用国际标准和国外先进标准的探讨

本文介绍了采用国际标准和国外先进标准是企业在新世纪的发展方向和发展策略的紧迫性,然后从五个方面对采用国际标准和国外先进标准进行了论述,同时简要介绍了公司标准化部门在“双采”过程中应开展的工作。