共查询到20条相似文献,搜索用时 234 毫秒
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通过建立指数-兰彻斯特方程模型对海军陆战队兵力夺控珊瑚岛礁兵力编组的作战效能进行评估,分析各战斗阶段的兵力损耗,检验作战方案实施的效果,为优化兵力编组和完善作战方案提供依据. 相似文献
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登陆部队作战效能的高低,直接决定着登陆作战的成败,而不同的登陆作战任务又决定着不同的兵力编成和指挥决策。以登陆作战为背景,运用层次分析与模糊综合评判法分析影响登陆部队作战效能的各因素权重,该评价方法比较合理地对作战效能进行优化分析,进而为确定登陆部队兵力编成提供了一种论证方法。 相似文献
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马世强 《舰载武器(含VCD光盘)》2004,(10):61-64
高技术条件下的渡海登陆作战,不但要实施一系列海上和空中战役,夺取制海权和制空权,摧毁敌方战略战役潜力,还必须拥有强大的海上火力支援力量,以便登陆兵力在滩头展开时对敌滩头及纵深防御体系和有生力量实施及时强有力的摧毁与压制,以保证登陆兵力突击上陆且有足够的力量向纵深推进。为了达到这一目的,历史上数次重要的大规模登陆作战都出现过把陆军火炮装上各种船舶形成火力支援舭的情况。例如1944年诺曼底登陆时,盟军就曾把数百门陆军的105毫米榴弹炮和122毫米火箭炮安装在坦克登陆艇和驳船上执行 相似文献
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霍克 《舰载武器(含VCD光盘)》2008,(7):28-35
超地平线登陆作战是二战后以美国海军为代表的发达国家海军率先采用的现代海上两栖登陆作战样式,其主要特点是充分发挥大型两栖作战舰艇的机动性和舰载气垫登陆艇、重型运输直升机等现代高速上陆工具的技术优势,在机动中选择敌防御薄弱环节,使突击部队在敌探测距离之外的海区换乘、编波,并从敌远程火力射程之外对敌意料之外地带实施突然、高速冲击上陆。众所周知,在当今高技术战争环境中,传统上陆方式及登陆工具的生存能力已经大为降低,而且,随着登陆工具向岸滩接近,敌各种防御兵器的火力密度和杀伤力更加猛烈,传统登陆方式已难以适应现代两栖登陆作战环境。而超地平线登陆作战则完全可以在距岸30-40海里甚至更远的距离上实施,不仅具有较强的隐蔽性、快速性和突然性,并且基本不受沿岸地形条件限制。以气垫登陆艇和重型运输直升机为代表的现代高速上陆工具在冲击阶段暴露在敌岸防火力攻击区的时间比以往抢滩上陆方式要短的多,因而十分有利于快速上陆并降低登陆兵力损失,尤其是舰载运输直升机还具有不受复杂地形地理环境、水文、岸滩、水中障碍、昼夜和复杂气象的局限,以及可搭载突击分队从空中快速超越敌沿岸防御、直入纵深要点实施垂直登陆和垂直包围的技战术能力,从而使现代两栖登陆作战从平面走向立体化。 相似文献
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存储资源管理器是简化存储管理和配置的关键,它把散布在存储网络中的存储设备统一配置和管理.研究对称式和非对称式两种iSCSI存储资源管理器的流程,实现使用这两种方式进行管理的管理器原型,对这两种原型系统进行了性能测试,分析和比较了它们各自的优缺点并提出了一些改进意见. 相似文献
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介绍了GPS定位基本原理、常见定位方法及其发展历史,同时重点介绍了目前最为流行的连续运行GPS定位服务(CORS)的概念、基本原理、主要构成、实现模式及国内外现状,并通过CORS在大型水运、路桥工程中的具体案例应用介绍,总结CORS模式下GPS测量技术在大型项目的勘察设计、施工放样、检测维护各阶段无可替代的先进性,提出在将来大型工程中CORS其独特的高精度、全天候、多功能及多领域的应用前景。 相似文献
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介绍了气垫登陆艇的故障现象,通过故障现象分析,对故障进行了定位,通过对故障件进行理化分析、金相组织分析、断口分析,设计图样与实物的制造符合性分析,最后采用实例建模进行了强度校核,得出某型气垫登陆艇燃气涡轮发电机组弹性轴断裂的故障模式。 相似文献
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The transient elastic deformation of a pontoon-type very large floating structure (VLFS) caused by the landing and take-off of an airplane is computed by the time-domain mode-expansion method. The memory effects in hydrodynamic forces are taken into account, and great care is paid to numerical accuracy in evaluating all the coefficients appearing in the simultaneous differential equations for the elastic motion of a VLFS. The time-histories of the imparted force and the position and velocity of an airplane during landing and take-off are modeled with data from a Boeing 747-400 jumbo jet. Simulation results are shown of 3-D structural waves on a VLFS and the associated unsteady drag force on an airplane, which is of engineering importance, particularly during take-off. The results for landing show that the airplane moves faster than the structural waves generated in the early stage, and the waves overtake the airplane as its speed decreases to zero. The results for take-off are essentially the same as those for landing, except that the structural waves develop slowly in the early stage, and no obstacle exists on the runway after the take-off of airplane. The additional drag force on an airplane due to the elastic responses of the runway considered in this work was found to be small in magnitude. 相似文献
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《Maritime Policy and Management》2012,39(8):995-1010
ABSTRACTCombining ro-ro shipping and tractor-and-semitrailer swap transport under land-sea combined transportation can reduce operating costs and improve the safety of maritime transport. In addition, selection of the tractor-and-semitrailer swap mode (i.e., the ship-swap mode and port-swap mode) is a critical factor that affects the efficiency and cost of ro-ro ship loading/unloading. Considering inland pickup/delivery and ship loading/unloading, this paper develops a model that determines the mode of tractor-and-semitrailer swap transport with the objective of minimizing the total cost. This study also considers constraints such as empty semitrailer exchange and multiple time windows associated with customer receiving/delivery locations and the ro-ro ship. A hybrid simulated annealing (SA) is applied to solve the problem. By analysing numerical examples, the results show that the port-swap mode is more suitable than the ship-swap mode when the number of tasks is large because the port-swap mode can perform more tasks with fewer tractors than the ship-swap mode and because the port-swap mode can service receiving/delivery locations and finish ship loading/unloading more punctually than the ship-swap mode. Thus, this research provides a useful reference for road transport carriers and port firms to select the mode of tractor-and-semitrailer swap transport for ro-ro shipping. 相似文献
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