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针对反潜巡逻机使用磁探仪和自导深弹的攻潜效能研究,提出了一种基于蒙特卡洛法的计算模型。在建立攻潜坐标系的基础上,给出了连投深弹射击深度的定义;结合磁探仪定位原理,提出了基于峰值追踪的定位目标和连投攻击的方法,仿真结果表明该方法能够提高命中概率;给出了目标分布和连投深弹的散布模型,依据攻潜过程和命中判定条件,进行了攻潜效能的计算;仿真分析了影响攻潜效能的主要因素,并研究了投弹间隔的确定方法。 相似文献
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人民的好总理周恩来,已经离开我们整整30周年了。他的一生都献给了中国人民的革命事业。遵义会议前后一段时期,周恩来身处党和红军的重要领导岗位,其军事实践直接与党和红军的前途命运密切相关。在红军渡过湘江、局势仍然十分险恶的关键时刻,他客观分析形势,迅速从红军遭受的重大挫折中汲取教训,果敢支持、采纳毛泽东等人的正确意见,铸造了符合中国革命战争实际的科学战争观念和杰出战略素养;在遵义会议上,他主动承担军事领导上的责任,坚决推举毛泽东出来领导和指挥红军,为实现党和红军历史上的重大转折立下了不朽功勋;在率师转战中,他协助毛泽东运筹帷幄,巧渡金沙江,飞夺泸定桥,练就精湛指挥艺术和顽强战斗作风;他始终以确保对敌作战的胜利为最高原则,眼光远大,意志坚定,坚持北上,同张国焘进行了针锋相对的斗争,捍卫了党和红军的统一。 相似文献
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Li-zhi Xu Cheng-xin Du Chun Cheng Xiao-dong Wang Jiang-bo Wang Zhong-hua Du Guang-fa Gao 《防务技术》2021,17(3):859-873
When a penetrator with enhanced lateral effect (PELE) impacts on a reinforced concrete (RC) target, the target is damaged with a large opening. An understanding of how PELE projectile parameters affect the opening dimension, is essential for effective design of the PELE projectile. In this study, under the condition that the impact velocity and target parameters (strength and thickness) were fixed values, the important influence factors of the PELE (jacket wall thickness B, jacket material strength Y1, filling material strength Y2 and angle of monolithic jacketθ) were determined by a dimensional analysis. Tests and simulations of the PELE penetrating the RC target were conducted to analyze the influence of these factors on opening diameter ((D), an equivalent diameter under relative kinetic energy). Based on the test and simulation results, it is found that the influence of these factors B, Y1 andθon the deformation mode of the jacket shows a similar trend:as values of the three factors decrease, the jacket deforms from small bending deformation to large one, and then to curling deformation. This causes the opening diameter to first increase with the decrease of these three factors, and then decreases. It is well known that the bending resistance of the jacket is related to these factors B, Y1 andθ. Therefore, a plastic limit bending moment (M0) of the jacket was quoted to characterize the influence of these factors on the bending deformation of the jacket and the opening diameter of the target. The influence factor Y2 causes (D) to first increase with the increase of Y2, and then decreases. A formula was developed to predict the opening diameter, whose influence parameters were considered in a dimensionless way. It has been shown that the dimensionless opening diameter (D)/d1 is dependent on two dimensionless parameters Q = (d31fc/M0) and G = (fc/Y2), where d1 and fc are the outer diameter of the projectile and the compressive strength of the target, respectively. 相似文献
227.
This paper mainly studied the problem of energy conserving in wireless sensor networks for target tracking in defensing combats. Firstly, the structures of wireless sensor nodes and networks were illustrated; Secondly, the analysis of existing energy consuming in the sensing layer and its calculation method were provided to build the energy conserving objective function; What's more, the other two indicators in target tracking, including target detection probability and tracking accuracy, were combined to be regarded as the constraints of the energy conserving objective function. Fourthly, the three energy conserving approaches, containing optimizing the management scheme, prolonging the time interval between two adjacent observations, and transmitting the observations selectively, were introduced; In addition, the improved lion algorithm combined with the Logistic chaos sequence was proposed to obtain sensor management schemes. Finally, simulations had been made to prove the effectiveness of the proposed methods and algorithm. 相似文献
228.
Projectiles made of reactive structure materials(RSM)can damage the target with not only kinetic but also chemical energy,but the enhanced damage potential of RSM may become compromised if extreme loading condition disintegrates the projectile before the target is reached.In this work,a ductile coating of Ni was introduced to a tungsten-zirconium(W-Zr)alloy,a typical brittle RSM,to preserve the damage potential of the projectile.Detonation driving tests were carried out with X-ray photography and gun-powder deflagration driving tests were carried out with high-speed photography for the coated and uncoated RSM samples,respectively.The craters on the witness target were analyzed by scanning electron microscopy and X-ray diffraction.The Ni coating was found to effectively preserve the damage potential of the W-Zr alloy under extreme loading conditions,whereas the uncoated sample fractured and ignited before impacting the target in both detonation and deflagration driving.The crack propa-gation between the reactively brittle core and the ductile coating was analyzed based on the crack arrest theory to mechanistically demonstrate how the coating improves the structural integrity and preserves the damage potential of the projectile.Specifically,the Ni coating envelops the W-Zr core until the coated sphere penetrates the target,and the coating is then eroded and worn to release the reactive core for the projectile to damage the target more intensively. 相似文献
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论推行综合寿命周期费用控制法 总被引:6,自引:0,他引:6
徐宗昌 《装甲兵工程学院学报》2000,14(1):24-30
为了走出一条投入较少,效益较高的军队现代化的路子,解决我军武器装备发展与有限国防经费之间的矛盾。根据装备的全系统全寿命管理的一般原理和国外装备寿命周期费用方法,结合国情与军情,首次提出了一套综合寿命周期费用控制法,以便对我军装备的费用进行有效的管理与控制。同时提出了为推广该法当前急需做好的几项工作。 相似文献