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Roll Stabilization with Short Wings 短翼横摇稳定
IF 0.2 4区 工程技术 Pub Date : 2011-03-01 DOI: 10.1111/J.1559-3584.2010.00298.X
Z. Segal, A. Segal
The paper presents the description and results of model experiments carried out, at zero forward speed, for determining the roll-damping qualities of continuous bilge keels and of short wings, installed in a staggered row along the ship. The damping qualities of the short wings roll stabilizer (SWIRS) were investigated also at forward motion of the ship, using additional experimental data and the more exact calculation method of the SWIRS effectiveness. The presented experimental results and the performed analysis of roll stabilizers can be useful in further investigations and design of new vessels.
本文介绍了在零前进速度下,为确定连续舱底龙骨和沿船错开排列的短翼的减摇特性而进行的模型试验的描述和结果。利用附加实验数据和更精确的减摇效果计算方法,研究了短翼横摇减摇器在船舶前进时的阻尼特性。本文的实验结果和对横摇稳定器的分析可以为今后研究和设计新船提供参考。
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引用次数: 4
Contributors 贡献者
IF 0.2 4区 工程技术 Pub Date : 2011-02-24 DOI: 10.1111/j.1559-3584.2010.00308.x
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引用次数: 0
Modernization of the Naval Logistics Information Infrastructure: Impact on Operational Readiness, Efficiency, and Platform Life Cycle 海军后勤信息基础设施现代化:对作战准备、效率和平台生命周期的影响
IF 0.2 4区 工程技术 Pub Date : 2011-02-24 DOI: 10.1111/j.1559-3584.2010.00283.x
IRENE V. FARQUHAR

This study proposes novel flexible and expandable information infrastructure that integrates a grid of active Radio Frequency Identification Devices (RFID) geospatial/area nodes communicating with microsatellites and networks of a/pRFID devices (labels, tags, buttons, etc.) with linkages into modernized legacy systems and rests on the constellation of satellites, joint logistics vessel(s), mobile autonomous systems, flexible engineering systems, and agile and reconfigurable structures for real-time command and control of the naval logistics, operational readiness, and expeditionary force sustainment and protection. The Navy Logistics Information Infrastructure (NLII) pursues the focused logistics for shared activities “to include conduct physical inventory, deliver property and forces, perform budgeting, and manage receipt and acceptance.” In addition, the proposed “Solution” encompasses information infrastructures for the Navy expeditionary logistics, expeditionary combat readiness, autonomous logistics, maritime security surveillance, continuous asset visibility and movements optimization, and medical support. “Solution” employs the Observe, Orient, Decide and Act (OODA) Loop methodology for simulation and optimization of the battlespace, security, preparedness, readiness and intelligence scenarios. The NLII “Solution” will be deployed in 43 months at the estimated cost of US$636M in constant dollars; return on investment (ROI) coefficient of 7:1. The “Expeditionary Combat Information Infrastructure” pilot can be delivered in 22 months at the estimated cost of US$303M.

本研究提出了一种新的灵活和可扩展的信息基础设施,该基础设施将与微型卫星通信的有源射频识别设备(RFID)地理空间/区域节点网格和具有链接的a/pRFID设备网络(标签、标签、按钮等)集成到现代化的遗留系统中,移动自主系统、灵活的工程系统以及灵活可重构的结构,用于海军后勤、作战准备以及远征军维持和保护的实时指挥和控制。海军后勤信息基础设施(NLII)追求共享活动的重点后勤,“包括进行实物盘点、交付财产和部队、执行预算以及管理接收和验收。”此外,拟议的“解决方案”包括海军远征后勤、远征战备、,自主物流、海上安全监控、持续的资产可见性和移动优化以及医疗支持。“解决方案”采用观察、确定、决定和行动(OODA)循环方法,模拟和优化作战空间、安全、准备、战备和情报场景。NLII“解决方案”将在43个月内部署,按固定美元计算,估计费用为6.36亿美元;投资回报率(ROI)系数为7:1。“远征作战信息基础设施”飞行员可以在22个月内交付,预计成本为3.03亿美元。
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引用次数: 1
SECRETARY'S NOTES 秘书的笔记
IF 0.2 4区 工程技术 Pub Date : 2011-02-24 DOI: 10.1111/j.1559-3584.2011.00306.x
Captain Dennis K. Kruse USN (Ret.)
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引用次数: 0
In Memoriam 悼念
IF 0.2 4区 工程技术 Pub Date : 2011-02-24 DOI: 10.1111/j.1559-3584.2010.00309.x
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引用次数: 0
Pulsed Power Loads Support and Efficiency Improvement on Navy Ships 海军舰艇脉冲电源负载的支持与效率提高
IF 0.2 4区 工程技术 Pub Date : 2011-02-24 DOI: 10.1111/j.1559-3584.2010.00277.x
ROBERT E. HEBNER, JOHN D. HERBST, ANGELO L. GATTOZZI

This paper addresses the use of energy storage and high-speed power generation to support high power loads and at the same time reduce fuel consumption of DDG51 Arleigh Burke class destroyers. Energy storage can supply pulsed energy loads, and can be used to improve reliability and power quality by stabilizing the grid. It can also serve to improve ship efficiency by acting as an uninterruptible power supply, enabling single generator operation with a single gas turbine operating closer to its peak efficiency, rather than running constantly two generator sets at light load. In case of failure, the energy storage unit provides power for critical loads until a second generator set can be brought online. Based on system modeling, fuel savings projections, and ship integration studies, a flywheel energy storage system was found to be a viable approach to realizing significant fuel savings on the DDG51 ship service generation system. Using a typical load profile, fuel savings in excess of US$1 million per year per ship can be expected. The particular flywheel energy storage system of this study can mitigate system transients and provide up to 10-minute ride-through to enable multiple start attempts on the second gas turbine generator set.

本文介绍了DDG51阿利·伯克级驱逐舰使用储能和高速发电来支持高功率负载,同时降低燃料消耗。储能器可以提供脉冲能量负载,并可以通过稳定电网来提高可靠性和电能质量。它还可以通过充当不间断电源来提高船舶效率,使单台发电机能够在接近峰值效率的情况下运行,而不是在轻负载下持续运行两台发电机组。在发生故障的情况下,储能单元为关键负载提供电力,直到第二台发电机组能够联机。基于系统建模、燃油节约预测和船舶集成研究,发现飞轮储能系统是在DDG51船舶服务发电系统上实现显著燃油节约的可行方法。使用典型的负载情况,燃油节省超过1美元 预计每艘船每年将达到百万美元。本研究的特定飞轮储能系统可以减轻系统瞬态,并提供长达10分钟的穿越时间,以实现第二燃气轮机发电机组的多次启动尝试。
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引用次数: 18
Overcoming Cost-Estimating Challenges for Navy Combat Systems 克服海军作战系统的成本估算挑战
IF 0.2 4区 工程技术 Pub Date : 2011-02-24 DOI: 10.1111/j.1559-3584.2010.00278.x
DANIEL BOWERS, AMANDA CARDIEL, BELLA CURTIS, SCOTT MONTRIEF

The Department of Defense has established guidelines and processes that have evolved over several decades for its acquisition community to ensure affordability of Navy ship and combat systems. A common challenge within the Navy combat systems cost-estimating community is the ability to utilize many of the guidelines and processes put in place by experienced entities such as the Government Accountability Office and the Naval Center for Cost Analysis because of the evolving environment associated with past, present, and future Navy combat systems. The purpose of this paper is to give a detailed insight on the challenges Naval Surface Warfare Center, Dahlgren Division (NSWCDD) cost estimators encounter when building cost models and estimates for the Navy. Many challenges include limited program definition because of emerging threats, new technologies, and collection and utilization of data to produce valid and credible estimates. Through combined knowledge, expertise, and evolving practice of incorporating lessons learned, the NSWCDD Cost Group has overcome many cost-estimating challenges. This paper will share the NSWCDD Cost Group's insights with the larger Navy community. Owing to the sensitive nature of cost, no specific estimates or project names are referenced. This paper is philosophical in nature and does not discuss mechanics of cost estimation in detail.

国防部为其采购社区制定了几十年来不断发展的指导方针和流程,以确保海军舰艇和作战系统的可负担性。海军作战系统成本估算界面临的一个共同挑战是,由于与过去、现在和未来海军作战系统相关的不断变化的环境,能否利用政府问责局和海军成本分析中心等经验丰富的实体制定的许多指导方针和流程。本文的目的是详细了解达尔格伦师海军水面作战中心(NSWCDD)成本估算师在为海军构建成本模型和估算时遇到的挑战。许多挑战包括由于新出现的威胁、新技术以及收集和利用数据以产生有效和可信的估计而导致的项目定义有限。NSWCDD成本小组通过将知识、专业知识和不断发展的经验教训结合起来,克服了许多成本估算方面的挑战。本文将与更大的海军社区分享NSWCDD成本小组的见解。由于费用的敏感性,没有提及具体的估计数或项目名称。本文是哲学性质的,没有详细讨论成本估算的机制。
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引用次数: 1
Next-Generation Power and Energy: Maybe Not So Next Generation† 下一代电力和能源:下一代可能并非如此†
IF 0.2 4区 工程技术 Pub Date : 2011-02-24 DOI: 10.1111/j.1559-3584.2010.00280.x
LYNN J. PETERSEN, DONALD J. HOFFMAN, JOSEPH P. BORRACCINI, STEVEN B. SWINDLER

Through many a technical society paper and/or presentation, such as this, future high-power mission loads such as Electromagnetic Aircraft Launch System, Electromagnetic Rail Gun, and Free Electron Laser that will provide capabilities far greater than can be achieved by existing platforms, have been presented. With these high-power and energy mission loads comes the need for next-generation integrated power systems possessing higher voltage distribution systems (AC or DC), compact/power-dense conversion modules, high-speed power-dense power generation modules, energy storage modules, and appropriate supervisory and machinery controls to provide and partition the available power and energy to the right load, with the right power and at the right time. This remains the vision for the “Navy after Next” all-electric warship (AEW). However, “Navy Now” and “Next Navy” platforms have challenges and needs that ongoing investments and advanced developments in power and energy technologies can help to meet. Such challenges include reduced dependency on foreign-supplied fossil fuel, increasing demand for installed ship power, controlling ship procurement and life-cycle costs. This paper will present planned and ongoing efforts that can be aligned to meet these nearer term ship challenges, and at the same time, with an eye on the future power and energy requirements when they materialize, be refocused to enable and support the high-power and energy demands of the AEW.

通过许多技术协会的论文和/或演示,例如本次,已经介绍了未来的高功率任务负载,如电磁飞机发射系统、电磁轨道炮和自由电子激光器,这些负载将提供远远超过现有平台所能实现的能力。随着这些高功率和能源任务负载的出现,需要具有更高电压配电系统(AC或DC)、紧凑型/功率密集型转换模块、高速功率密集型发电模块、储能模块、,以及适当的监督和机械控制,以在适当的时间以适当的功率向适当的负载提供和分配可用的功率和能量。这仍然是“下一代海军”全电动战舰(AEW)的愿景。然而,“现在的海军”和“下一代海军”平台面临着挑战和需求,电力和能源技术的持续投资和先进发展可以帮助满足这些挑战和需求。这些挑战包括减少对外国供应的化石燃料的依赖,增加对已安装船舶动力的需求,控制船舶采购和生命周期成本。本文将介绍有计划和正在进行的努力,这些努力可以协调一致,以应对这些近期的船舶挑战,同时,着眼于未来的电力和能源需求,当这些需求实现时,将重新聚焦于实现和支持AEW的高功率和能源需求。
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引用次数: 35
ASNE Fleet Maintenance and Modernization Symposium 2010 Opening Keynote Address 2010年ASNE舰队维护与现代化研讨会开幕主旨演讲
IF 0.2 4区 工程技术 Pub Date : 2011-02-24 DOI: 10.1111/j.1559-3584.2010.00276.x
ADM JOHN C. HARVEY, USN
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引用次数: 0
Addressing the Challenges of Software Growth and Rapidly Evolving Software Technologies 应对软件增长和快速发展的软件技术的挑战
IF 0.2 4区 工程技术 Pub Date : 2011-02-24 DOI: 10.1111/j.1559-3584.2010.00279.x
JOE W. HEIL

The growth, complexity, and reliance on software as part of the Department of Defense and Navy (DoD/Navy) warfare systems is continuing to increase. This increase in software complexity and reliance has been accompanied by an increase in software intensive system acquisition cost, schedule, and technical performance failures. The DoD/Navy is not performing as a smart partner with industry to successfully apply the latest software methodologies and technologies to achieve the goal of Open Architecture-based reusable software components, and thereby improve quality and reliability while also reducing cost and schedule overruns. A key enabler for improving software intensive system acquisition is the reconstitution and utilization of government in-house software subject matter experts that can lead and work with industry software engineers as part of an integrated software development team.

作为国防和海军部(DoD/Navy)作战系统的一部分,软件的增长、复杂性和依赖性正在持续增加。软件复杂性和依赖性的增加伴随着软件密集型系统采购成本、进度和技术性能故障的增加。国防部/海军在成功应用最新的软件方法和技术以实现基于开放体系结构的可重复使用软件组件的目标,从而提高质量和可靠性,同时减少成本和进度超支方面,并不是一个明智的行业合作伙伴。改善软件密集型系统采购的一个关键因素是重组和利用政府内部软件主题专家,他们可以作为集成软件开发团队的一部分领导行业软件工程师并与之合作。
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引用次数: 3
期刊
Naval Engineers Journal
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