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发射内弹道计算模型研究 总被引:1,自引:0,他引:1
对以燃气-蒸汽式发射动力装置为动力源的导弹冷弹射过程进行了分析,对冷却水汽化机理进行了研究,针对不同状态的冷却水,提出了不同汽化方式组合的冷却水汽化模型,在此基础上将弹射过程划分为4个阶段,并推导出各个阶段的汽化方程和能量平衡方程,建立了发射内弹道基本方程组。计算模型改进后,发射内弹道的计算精度有很大提高。 相似文献
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美海军于2004年秋天测试两套使航空母舰弹射飞机方式发生革命性变化的系统,即电磁飞机弹射系统(EMALS)。海军的想法是利用直线感应电动机,通过一个先进的储能系统的能量以极高速运动将飞机弹射入空。电动机的概念类似磁悬浮列车系统采用的技术。 相似文献
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飞机电磁弹射系统发展综述 总被引:1,自引:0,他引:1
《舰船科学技术》2013,(10):1-5
飞机电磁弹射系统是一种利用直线电机产生的电磁力将舰载机在航母甲板上加速到起飞速度的弹射装置。介绍了EMALS的需求背景和发展概况,总结它相对于蒸汽弹射系统的巨大优势,分析它的组成和关键技术,并指出它未来的发展方向和推广应用于其他军民领域的潜力,论述了我国航母跨越蒸汽弹射系统,直接发展EMALS的必要性。发展电磁弹射技术不仅有利于我国航母战斗力的极大提升,也有利于推动国家相关军民技术的极大发展。 相似文献
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《舰船科学技术》2013,(3)
<正>美国海军航母电磁弹射器已完成储能电机共享试验,比预定日期有所提前。从"福特"号(CVN78)航母开始,将采用电磁弹射系统,替换目前航母上采用的蒸汽弹射器系统。电磁弹射器系统由一同工作的6个子系统组成,这些系统共享各部件,驱动舰上4部弹射器。但是,试验点只有1部弹射器,所以迄今为止系统只需控制1部弹射器。在2012年11月完成系统功能演示阶段之后,电磁弹射器团队将在试验点建造四弹射器模拟舰船环境。试验对储能电机进行了仿真,该电机为弹射静载荷或负重滑车的多个弹射器提供能量。能够提前完成共享试验,归功于良好的准备和协调工作。准备工作之一,是采用主要工业伙伴通用原子公司典型的舰船控制实验室,以完成四弹射器系统的全面建模和仿真,保证弹射控制的正确性。采用了典型的舰船控制实验室,而不是全规 相似文献
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《船舶与海洋工程学报》2014,(2)
正In the paper"Influence of Fouling Assemblage on the Corrosion Behaviour of Mild Steel in the Coastal Waters of The Gulf of Mannar,India"in Vol.12,No.4,Page:509,References were lost,and the two authors’biographies were identical.The correct text is shown below.We apologize to the authors and our readers for any inconvenience caused by the errors. 相似文献
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《船舶与海洋工程学报》2014,(1):126-126
正San Francisco,California,June 8-13,2014.OMAE 2014 is the ideal forum for researchers,engineers,managers,technicians and students from the scientific and industrial communities from around the world to:·meet and present advances in technology and its scientific support;·to exchange ideas and experiences whilst promoting technological progress and its application in industry·to promote international cooperation in ocean,offshore and arctic engineering.In line with the tradition of excellence of previous OMAE conferences,more than 900 technical papers are planned for presentation.Outreach for Engineers Specialty Forum This Specialty Forum is designed for students and professionals who may not be familiar with the Ocean and Offshore industry,as well as those who have just recently specialized in this field. 相似文献
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联合作战计划和执行系统 总被引:2,自引:1,他引:1
全球指挥控制系统(GCCS)实施当前美国海军网络中心战信息基础设施的联合计划网络。联合作战计划和执行系统(JOPES)支持GCCS实现联合计划。JOPES有两类计划:时间不限的精密预案计划生成作战计划、方案计划或职能计划;时间敏感的危机行动计划生成作战命令或战役方案。前者在和平时期创建的作战计划是后者的计划基础,加速应付危机的能力。 相似文献
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《船舶与海洋工程学报》2014,(1)
正19–24 October 2014 SingaporeCONFERENCE THEMES The overall aim of the ICHD Conference is to provide a forum for participants from around the world to review,discuss and present the latest developments in the broad discipline of hydrodynamics and fluid mechanics.The first International Conference on Hydrodynamics(ICHD)was initiated in 1994 in Wuxi,China.Since then,9 more ICHD conferences were held subsequently in Hong Kong,Seoul,Yokohama,Tainan,Perth,Ischia,Nantes,Shanghai and St Petersburg.Evidently the ICHD conference has become an important event among academics,researchers,engineers and operators,working in the fields closely related to the science and technology of hydrodynamics.The 11th ICHD will be held in Singapore in 2014. 相似文献
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《船舶与海洋工程学报》2014,(2)
正November 4-6,2014Moody Gardens HotelConvention Center/Galveston,TX The Deepwater Operations Conference and Exhibition is celebrating its 12th anniversary this year.This growing event will continue the tradition of excellence in addressing operational challenges involved in developing deepwater resources.We will return to the Moody Gardens Hotel and Convention Center on November 5-7,2014 in Galveston,Texas. 相似文献
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In terms of equal sailing distances, where is the inflexion when ships depart from ports in the Asian Continent to New York via Suez and/or Panama?
The answer is China South Port Group (Hong Kong, Shenzhen and Guangzhou). 相似文献
The answer is China South Port Group (Hong Kong, Shenzhen and Guangzhou). 相似文献
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桥梁防撞设施物理模型试验 总被引:1,自引:0,他引:1
物理模型试验是预报防撞设施所受撞击力及优化设计方案的主要方法之一。结合杭州湾大桥柔性防撞设施及东海大桥独立式防撞体设计方案,阐述了船—防撞体撞击试验的基本原理、方法、试验方案及相关试验结果。提出了柔性防撞系统的优化方案。试验结果表明,该方案经济有效,可供预报类似桥梁防撞设施撞击力时参考。 相似文献
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印尼某电厂项目码头水工建筑物包括码头、防波堤和护岸等主要组成部分。在该项目水工建筑物的设计过程中,综合考虑当地的自然条件、施工能力和材料来源等因素,不断优化结构选型和结构断面。根据不同使用要求,护岸分别采用直立式和斜坡式2种结构型式,推荐的设计方案节省投资、施工方便,可供同类工程设计参考。 相似文献
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Lynne Zeitlin Hale Mark Amaral Abdulrahman S. Issa B. A. J. Mwandotto 《Coastal management》2013,41(1):75-85
Site-based projects were initiated in Chawka Bay-Paje, Zanzibar, and Nyali-Bamburi-Shanzu, Kenya, to demonstrate the benefits of an integrated coastal management (ICM) approach for addressing coastal issues such as tourism development and enhancement of resource-dependent village economies in eastern Africa. A two-year, multidonor project used three primary strategies to make rapid, but sustainable, progress toward ICM. These included using interagency government teams for ICM planning, adopting an internationally recognized framework for ICM as a project ''road map,'' and explicitly incorporating capacity-building strategies into all aspects of the project. Within two years, integrated ICM action strategies, prepared through participatory processes, were being implemented at both sites, and both teams were working to expand the scale and scope of ICM in their nation. More importantly, the project helped create committed, capable, interagency groups that continue to work together to address urgent ICM issues. 相似文献