军政双胜的黑水战役

1951年6月,四川腹地剿匪取得了决定性胜利后,头号匪首傅秉勋携电台逃往黑水,勾结当地反动大头人苏永和等,组织残散匪特、反动军官及地主恶霸,在台湾特务机关指挥下,煽动武装暴乱,企图在四川、西康、甘肃、青海接合部建立反革命根据地。为肃清该匪,西南军区根据中央指示专门成立了剿匪前线指挥部,由西南军区公安部队副政治委员兼政治部主任郭林祥任总指挥,调集部队分路围剿,采取军事打击与政治争取相结合的方针,经过两个月的艰苦奋战,最终在黑水战役中取得了军政双胜。     

基于聚-α烯烃油的锂基润滑脂流变性

为系统研究锂基润滑脂的流变性能,以12-羟基硬脂酸锂皂为稠化剂和聚-α烯烃(PAO)油为基础油制备了锂基润滑脂。考察了稠化剂含量、基础油黏度和温度对锂基润滑脂的触变性、储存模量、损耗模量、表观黏度和应变幅度等流变参数的影响,并对其影响机理进行了探讨。实验表明:锂基润滑脂是屈服性假塑性流体,在很小应变范围内以可恢复的弹性变形为主导,达到其屈服应力后,具有明显的剪切变稀现象;达到其流动点后,表现出黏性流体性质。     

讯问过程中火灾事故责任者心理分析及对策研究

火灾事故责任者往往为了逃避法律制裁,施用各种手法抗拒交代案件的真相。正确研究分析火灾责任者在讯问过程中的心理特点、表现及成因,并科学运用讯问方法、策略,可以为公安消防机构迅速准确认定火灾事故原因和火灾事故责任,提供重要的证据,从而实现火灾事故调查工作的突破。     

模糊Petri网在故障诊断知识表示和推理中的应用

针对传统的模糊产生式规则知识表示复杂、推理效率低、单一阈值设定不能满足复杂故障诊断需求的问题,给出了模糊产生式规则转换为模糊Petri网的一般方法和故障诊断模型,以及基于双阈值设定的两级故障诊断推理算法,并将其应用于某型柴油机遥控系统故障诊断之中。通过设置双阈值提高了故障诊断的推理速度和推理效率,同时又能对系统的准故障状态进行检测,及时发现潜在故障,排除故障隐患。     

装备需求论证资源化相关问题研究

在对装备需求论证资源需求分析的基础上,针对其基础性、超前性、秘密性、多样性及复杂性的特征,运用分面组配法将其分为知识资源、数据资源、模型资源、方法资源、任务资源等,并以作战任务、作战能力、装备性能数据为例对其进行了规范化描述。同时,提出了构建装备需求论证资源库的具体思路,包括资源获取、资源信息规范化描述、资源库功能需求分析、资源库的维护和应用等。     

Thermal and combustion behavior of Al-MnO2 nanothermite with poly(vinylidene fluoride -co- hexafluoropropylene) energetic binder

Fluoropolymers get increasing attention in energetic materials application due to the high fluorine content. To explore the effect of poly(vinylidene fluoride-co-hexafluoropropylene) (P(VDF-HFP)) on Al/MnO2 nanothermite, the samples with different contents are prepared and characterized by SEM, TG-DSC, XRD, and their ignition and combustion behavior are tested and recorded. The results show that P(VDF-HFP) as an energetic binder can combine the nanothermite components together, even exist in the gaps. The integrity of energetic materials has been improved. Thermal analysis shows that the addition of P(VDF-HFP) greatly changes the thermal reaction processes, and the exothermic peaks appear early, but the utilization of fuel and oxidizer is not efficient from the XRD results. Furthermore, the appropriate addition of P(VDF-HFP) can directly reduce the ignition energy threshold and increase the combustion time, which is necessary for the potential ignition charge application. The possible reasons for above phenomena are discussed and analyzed. This research provides a reference for improvement of thermite-based ignition charge formulation.     

Quasi-steady aerodynamic characteristics of Terminal Sensitive Bullets with short cylindrical portion

The aerodynamic characteristics are vital for short cylindrical Terminal Sensitive Bullets(TSB)with low aspect ratio,especially in terminal trajectory.Currently,there is little research in terms of the TSB and short cylinder with two free ends,and particularly in this trajectory,where the scanning angle β and roll angle α vary over a broad range between 0° and 180°.In this work,wind tunnel experiments are first conducted to learn the effects of Reynolds number and scanning angle on aerodynamic parameters for short cylinder with aspect ratio L/D = 1.Similar to infinite cylinder,for the short cylinder with two free ends,the drag crisis phenomenon still exists in the critical regime 1.7 × 105 ≤ Re ≤ 6.8 × 105.Then 3D simulations are performed to demonstrate the aerodynamic characteristics of short cylinder and TSB over a broad range of Re,L/D,α and β.The sensitivity analysis of time step and grid are presented as well.When β=0°,for short cylinder,the drag crisis phenomenon was also observed in the simulation,but not as obvious as in the wind tunnel test.In some attitudes,there is an obvious Kármán vortex in the wake of short cylinder and TSB.The correlation between time-averaged aerodynamic coefficients and L/D,Re,α&β is discussed.The vortex shedding frequency and shear layer behavior are obtained for quasi-steady and unsteady flow.Finally,the effect of end's shape on drag reduction and vortex shedding frequency is analyzed.     

基于设计体模型的产品数据管理技术

针对电子系统和设备设计的需要，本文提出一种面向产品对象的数据模型——设计体模型。阐述了产品数据的配置管理和版本管理的实施策略。     

模型递推辨识算法及应用

研究了具有线性参数的非线性多项式模型的数据阵L－D分解性质,其中D是对角阵,L是带有单位元素的下三角阵．结果表明,通过因子L可以估计出模型的参数,通过因子D可以选择模型中的项;提出了同时进行模型的结构确定和参数估计的递推辨识算法．该算法可用于船舶运动的实时建模．实际应用结果表明,该算法可以有效地辨识多项式等线性参数的非线性模型．     

舰船尾部振动的水弹性模型

采用三维水弹性理论导出了舰船尾部振动的流固耦合运动方程式;用三维结构混合有限元和三维流体边界元建立了舰船尾部振动的水弹性分析离散模型．提出了中型水面舰艇尾部整体振动的预报方法;编制了相应的计算机程序．对两型舰艇的尾部振动进行了分析计算,结果表明,预报值与实测值比较吻合．研究结果可对中型水面舰艇的减振降噪设计提供预报手段,从而改善舰船的尾部振动环境．