舰船电力推进原动机多模块配置试验台测试系统研制

介绍了舰船电力推进原动机多模块配置试验台的构成情况和工作原理．此试验台可以进行多模块配置（CODOG与COGOG）及多工况下的动力切换试验,测控系统为切换过程的数据记录提供了保证．瞬时转速、瞬时扭矩和三S离合器中间滑移件位移测量是研究柴-燃、燃-燃多模块配置联合动力装置主机切换动态特性的关键．应用测控系统通过实验得到了三S离合器中间滑移件的动态特性．     

舰用燃气轮机齿轮传动装置

本文综述了国外军用舰船的动力推进方案及其齿轮传动装置。其中把国外舰船通常采用的燃-燃交替联合动力装置(COGOG)、柴-燃交替联合动力装置(CODOG)、全燃联合动力装置(COGAG)和柴-燃联合动力装置(CODAG)的动力推进方案用实际例子作了阐述和比较。文中较为突出地叙述了各种推进方案所采用的齿轮传动装置的设计思想、传动方案和加工制造方法。     

柴燃交替联合动力装置模式切换过程时间参数的实验研究

为了深入研究联合动力在动力切换过程中系统所体现出的机动性能,三S离合器(Synchro-Self-Shifting)作为传动部分的关键部件,其相关参数的动态变化更引人注目,本文构建了测试平台并完成了离合器在不同影响因素下的实验,首次完整定义了离合器工作过程中的时间参数,获得了时间参数的基本规律,为分析系统在动力切换过程中表现出的的机动性能提供了依据,同时也为动力装置传动系统的强度及控制系统设计提供参考。     

柴燃联合动力装置非对称主机推进工作制的仿真研究

[目的]当舰船柴燃联合动力装置(CODOG)因作战而导致某台主机发生故障时,如何使其保持较好的推进性能,对于该推进系统的应急使用具有重要意义。[方法]在Simulink环境下采用模块化建模思想构建"船—机—桨—舵"系统的仿真模型,提出CODOG双轴非对称主机推进的应急运行模式,并对该运行模式进行仿真。[结结果]仿真结果表明:若额定工况下2台主机无法同时工作,可通过调整2部调距桨的螺距使其中一台主机在额定工况运行,另一台主机则采取部分负荷运行;若要保证高航速,应使燃气轮机产生额定功率,此时柴油机对应的调距桨的螺距应保持在最大值附近;在最高航速下可达到设计航速的84.4%,舰船的快速性要优于采用燃气轮机单轴推进模式。[结论]研究结果对CODOG动力装置的设计具有一定的参考价值。     

巴西护卫舰上采用的伦克-船用齿轮减速装置

本文介绍联邦德国伦克齿轮公司研制的舰船用齿轮减速装置。该装置是专门为巴西海军V28型护卫舰设计的,它同柴燃动力装置(CODOG)配合使用,并采用sSSS-合器。它的使用效果通过采用背对背试验得到证实。     

采用基于物理本质的设计软件进行船型与机械优化设计

船舶设计软件适用于提高现有巡洋舰设计研究水平。研究主要包括能有效减少总燃耗量的机械配置方案，从而减少船舶总重量和使用费用。当今大多数军舰的原动机(多半是燃气轮机)通常是为了使舰艇获得最大航速而设计的，最大航速比巡航航速高得多。就CG47而言，巡航时需用的轴功率仅为最大航速的16％。因此，巡航时的燃耗率要高64％，因此时燃气轮机仅使用了一小部分额定功率。介绍并研究了辅机及其对船舶设计的总影响，分析了4种不同的机械配置方式，即柴油机或燃气轮机联合动力装置(CODOG)、柴油机和燃气轮机联合动力装置(CODAG)、燃气轮机或燃气轮机联合动力装置(COGOG)、燃气轮机与燃气轮机联合动力装置(GOGAG)，结果表明可以节省燃料多达34％，使整个船舶重量共减少9％。     

CODOG监控系统电路板自动测试技术研究

电路板自动测试技术对于舰用动力装置监控系统的故障检测与维修至关重要。以CODOG动力装置监控系统使用广泛、故障率较高的电路板RA1-01继电器输出板为例,选取BDS—9210柜式VXI自动测试设备作为测试平台,介绍RA1-01的测试程序集（TPS）的开发过程。测试结果表明：TPS故障检测率为95%,故障隔离率为80%（模糊度为4）。     

燃机快速并车过程的冲击载荷特性分析及实验研究

[目的]为了获取燃燃联合动力(COGAG)装置在快速并车解列过程中的冲击载荷及轴系动态响应,提出一种理论计算方法.[方法]根据同步自动换挡(SSS)离合器啮合过程中各部件的力学关系,建立离合器的动力学分析模型,并开展燃燃联合动力装置并车过程的动力学仿真和台架实验.[结果]仿真结果表明:在阻尼油腔作用的时刻,离合器螺旋花...     

船舶动力系统S.S.S离合器运动特性仿真研究

中继式S.S.S.离合器主要应用在燃气轮机驱动的动力系统,其运动规律对动力系统的传动/切换性能具有重大影响.阐述中继式S.S.S.离合器的结构运动,并建立其虚拟样机.在不同约束条件下,对中继式S.S.S.离合器运动过程进行动态仿真研究,得到中继式S.S.S.离合器的运动特性及的阻尼特性.     

27.5m内河拖船艉轴承改型设计

1动力装置概况 27.5m拖船动力装置的主要参数如下:主机型号6160A-1、6160A-2各一台,主机转速750r/min,额定功率99kW.离合器型号D300,减速比3.53.     

Errata

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.     

Journal of Marine Science and Application 2014 Sum. Contents

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第34届海洋、离岸及极地工程国际会议(英文)

正St.John's,Newfoundland,Canada,May 31-June 5,2015 OMAE2015 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;     

联合作战计划和执行系统

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。     

Eastbound or westbound ?

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）.     

Recent progress on wave induced loading measurements in warships

Recent measurements of wave induced hull strain and flexure in RN warships are presented together with the derivation of the current design criteria for extreme hull girder bending loads. The history of the development of the shipboard instrumentation used is given and recent developments to improve the quality and ease of analysis of the data are described. An unexpectedly high transverse asymmetry in the longitudinal strains measured in destroyers is shown to be the result of a combination of vertical and lateral bending in oblique seas. Finally recent theoretical comparisons between the loading of Deep-Vee hulls and conventional UK rounded bilge hulls are presented which demonstrate the higher loading experienced by this type of hull form.     

桥梁防撞设施物理模型试验

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。     

印尼某电厂码头水工建筑物设计

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。     

Impact of regulation on the performances of long-distance transport services: A comparison of the different approaches in Sweden and Norway

Despite the many socio-economic similarities between Sweden and Norway, differences in jurisdiction, organisation, cooperation, and financing of long-distance passenger train and coach services have led to the development of four distinctively different ways of serving the markets. This paper describes how the train and coach markets have developed in the two countries, with emphasis on regulatory and industrial structure and a couple of performance variables.Looking at passenger rail, both countries separated infrastructure from operation over a decade ago. However, while Norwegian rail is characterised by an almost monopoly supplier, rail services in Sweden are partly decentralised to the responsibility of county authorities and are widely subjected to competitive tendering. The rest of the network is about to be opened up for on-the-track competition. Swedish Rail (SJ) has spent the last decades consolidating its core business (passenger rail) and sold out its other businesses. In contrast, the Norwegian state rail (NSB) has expanded its business to become a major bus operator and property owner, with extensions also into the Swedish market.The coach industry was more recently deregulated in both countries. The Swedish coach market is dominated by privately owned companies operating services to and from Stockholm. In Norway, state-owned NSB is a major coach operator on medium distance routes, and is also the largest partner of Nor-Way Bussekspress which totally dominates long-distance coach services. Further, the Norwegian coach market is characterised by cross-ownership and cooperation which has enabled an extensive route network which covers most of Norway.We find distinct differences in achievements in the two modes and in the two countries. Swedish rail services have succeeded in winning market shares and in renewing and developing both infrastructure and service levels to a greater extent than the Norwegian model. On the other hand, the Norwegian coach market seems to be more developed and efficient compared to its Swedish counterpart.The paper concludes with a discussion on the possible links between the different approaches and the performance observed, with the aim to stimulate further and more detailed research on some important issues.     

开放式数据挖掘系统模型

目前国内已经出现了少量的数据挖掘相关产品。国内数据挖掘软件无论从数量还是质量上比较，都与国外软件存在着较大的差距。随着数据仓库技术的普及，数据挖掘应用的需求越来越强烈，如何缩短这种差距，研发数据挖掘软件产品成为国内业界的一个重要问题。通过引用目前国际通用数据挖掘标准技术来构建开放式的数据挖掘系统模型，该系统模型从可扩展性、可重用性、易用性等方面得到了加强。