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美再建八艘弗吉尼亚级核潜艇 价值数十亿美元

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kktt 发表于 2008-12-22 18:14 | 显示全部楼层 |阅读模式

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 [美联社12月19日报道]国会高级官员表示,美海军即将向通用动力公司和诺思罗普·格鲁曼公司授予另外几艘“弗吉尼亚”(Virginia)级潜艇合同,合同价值数十亿美元。 

    负责舰艇项目的海军副部长表示,此次将建造8艘“弗吉尼亚”级潜艇,美海军将很快授予这份建造合同。合同正式宣布的日期预计在下个礼拜。“弗吉尼亚”级潜艇是美海军在冷战后时代设计的第一艘美海军舰艇。 

    美海军之前已经与通用动力公司附属电船公司和诺斯鲁普·格鲁曼公司纽波特纽斯船厂建立合作关系,这两家船厂每年为美海军建造一艘“弗吉尼亚”级潜艇。依照新合同规定,自2011年起这两艘船厂每年为海军建造的潜艇数量将增加到2艘。由于美国目前经济低迷,这两家潜艇建造商在这个月中旬发出警告可能进行裁员除非美海军增加舰艇的订单。 

    由于建造材料价格的上涨,美海军目前正面临舰艇建造成本的增加。“朱姆沃尔特”驱逐舰项目的建造费用已经上涨到50亿美元。通用动力公司巴斯钢铁公司和诺罗洛普·格鲁曼公司英格尔斯船厂分别建造一艘该型驱逐舰。面对建造成本的不断飙升,美海军只有减缓舰艇采办的步伐。但这样却使船厂面临裁员的风险。同时,这也会导致密西西比州和缅因州的立法者发生冲突,因为他们都希望美海军在自己的船厂建造更多的舰艇。 

    美海军已经花费了约126亿美元来建造首批10艘潜艇,并且希望能通过每年建造两艘的方式将每艘潜艇的建造成本减少2亿美元。该计划一方面可以让舰艇建造商提前几年对工作进行计划,另一方面还能让美海军的工业基础得以巩固。(中国船舶工业综合技术经济研究院 吴小兰)

    [据美国防务新闻网2008年12月19日报道]美国海军即将宣布一项价值140亿美元的建造合同,用来建造未来的8艘“弗吉尼亚”级攻击型核潜艇。
 
    通用动力电船公司是“弗吉尼亚”级潜艇项目的总承包商,与诺·格公司舰艇建造分部的纽波特纽斯船厂一起建造“弗吉尼亚”级潜艇。
 
    新的潜艇将会是第III批“弗吉尼亚”级潜艇,该批的首艇“北达科他”号(SSN784)已经包含在2009年国防预算中,海军计划在2010年采购另外一艘,并在2011、2012、2013年每年采购2艘,以完成8艘潜艇的采购目标。
 
    第III批潜艇将会装备新的“弗吉尼亚”级潜艇有效载荷发射管(VPT),该有效载荷发射管是在“俄亥俄”级巡航导弹核潜艇发射管的基础上改进的大直径发射管,每个发射管可以携带6枚“战斧”巡航导弹,用来代替先前的12个独立的“战斧”发射管。第III批潜艇还将装备宽孔径艇艏阵,并对声呐和水下监听装置进行改进布置。此外,在降低成本或改进建造进度的“可承受性”方针指导下,新潜艇还采用了100多项的改进设计。
 
    “北达科他”号潜艇将会于2015年交付美国海军。(中国船舶信息中心 杨龙塾)
站长 发表于 2008-12-22 18:26 | 显示全部楼层
通用和纽波特纽斯船厂己经好多年没有新艇可造了,核潜艇的超长服役期曾一度使核潜艇的设计研发团队受到威胁,这8艘订单无疑是美国核潜艇领域的一计强心剂。
 楼主| kktt 发表于 2008-12-22 19:04 | 显示全部楼层

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 楼主| kktt 发表于 2008-12-22 19:05 | 显示全部楼层

Virginia Block III: The Revised Bow

21-Dec-2008 13:28 EST
Related Stories: Americas - USA, Design Innovations, General Dynamics, Northrop-Grumman, Project Successes, Submarines, Support & Maintenance


“GDEB Receives $148M as Virginia Class Lead Yard” described changes to the Virginia Class submarine’s design that are expected to reach 20% of the $200 million savings goal by the time orders for the versatile sea attack/ land attack/ special forces submarines rise to 2 per year, in 2012.

The bow changes cover the FY 2009-2013 ships, referred to as Block III. SSN 774 Virginia – SSN 777 North Carolina are Block I, and SSNs 778-783 will be Block II. Block III begins with the 11th ship of class, SSN 784. Long lead time component orders began May 22/08, and the submarine is expected to be ready for delivery around 2015. A fuller explanation of Block III’s extensive bow changes, and an accompanying graphic, may be found below – along with contract updates that include additional improvements and sonar development…

The Virginia Class Program: “2 for 4 in 12”

The SSN-774 Virginia Class submarine was introduced in the 1990s as a Clinton-era reform that was intended to take some of the SSN-21 Seawolf Class’ key design and technology advances, and place them in a smaller, less heavily-armed, and less expensive platform. The resulting submarine would have learned some of the Seawolf program’s negative procurement lessons, while performing capably in land attack, naval attack, special forces, and shallow water roles. In the end, the Seawolf Class became a technology demonstrator program that was canceled at 3 ships, and the Virginia Class became the naval successor to America’s famed SSN-688 Los Angeles Class.

The Virginia Class program was supposed to reach 2 submarines per year by 2002, removing it from the unusual joint construction approach between General Dynamics Electric Boat and Northrop Grumman Shipbuilding – but that goal has been pushed back to 2012 in progressive planning budgets.

In FY 2005 dollars, SSN-21 submarines cost between $3.1-3.5 billion each. According to Congressional Research Service report #RL32418, and the Navy is working toward a goal of shaving FY05$ 400 million from the cost of each Virginia Class boat, and buying 2 boats in FY2012 for combined cost of $4.0 billion in FY 2005 dollars – a goal referred to as “2 for 4 in 12”. In real dollars subject to inflation, that means about $2.6 billion per sub in 2012, and $2.7 billion in 2013. The Navy believes that moving from the current joint construction arrangement will shave FY05$ 200 million from the cost of each submarine, leaving another FY05$ 200 million (about $220 million) to be saved through ship design and related changes.

Block III: The Changes

The most obvious change is the switch from 12 vertical launch tubes, to 12 missiles in 2 tubes that use technology from the Ohio Class special forces/ strike SSGN program. The Virginia’s hull has a smaller cross-section than the converted ballistic missile SSGNs, so the “6-shooters” will be shorter and a bit wider. Nevertheless, they will share a great deal of common technology, allowing innovations on either platform to be incorporated into the other submarine class during major maintenance milestones. Net savings are about $8 million to program baseline costs.

The other big change you can see in the above diagram is switching from an air-backed sonar sphere to a water-backed Large Aperture Bow (LAB) array. Eliminating the hundreds of SUBSAFE penetrations that help maintain required pressure in the air-backed sonar sphere will save approximately $11 million per hull, and begins with the FY 2012 boats (SSNs 787-788).

The LAB Array has 2 primary components: the passive array, which will provide improved performance, and a medium-frequency active array. It utilizes transducers from the SSN-21 Seawolf Class that are that are designed to last the life of the hull. This is rather par for the course, as the Virginia Class’ was created in the 1990s to incorporate key elements of the $4 billion Seawolf Class submarine technologies into a cheaper boat.

The SUBSAFE eliminations, plus the life-of-the-hull transducers, will help to reduce the submarines’ life cycle costs as well by removing moving parts that require maintenance, eliminating possible points of failure and repair, and removing the need for transducer replacements in drydock.

The bow redesign is not limited to these changes, however, and includes 25 associated redesign efforts. These are estimated to reduce construction costs by another $20 million per hull beginning with the FY 2012 submarine.

With the $19 million ($11 + 8) from the LAB array and Vertical Payload, and the $20 million from the associated changes, General Dynamics is $39 million toward the $200 million baseline costs goal of “2 for 4 in 12”. While the changes themselves will begin with the FY 2009 ship, the savings are targeted at FY 2012 because of the learning curve required as part of the switch. Recent discussions concerning an earlier shift to 2 submarines per year would result in faster production of the Block III submarines, but would be unlikely to make a huge difference to that learning curve.

Contracts and Key Events


Dec 12/08: General Dynamics Electric Boat Corp. in Groton, CT received a $16.8 million cost-plus-fixed-fee material order to fund the Block III Common Weapon Launcher (CWL) design, and includes the total scope associated with the vendor portion of the inboard electronics design as well as the scope required for in-house (Electric Boat) tasks. The CWL will sit in the Block III bow’s “six shooter” holes, and is so named because that space can be used to launch a wide variety of items besides UGM-109 Tomahawk cruise missiles; aerial UAVs and underwater UUVs are the most obvious.

GDEB services will include engineering support, Engineering Development Model (EDM) hardware, continued development of the CWL for use with SSN 784 VPT, development of interface documents, and defining changes to support interfaces to the Weapon Control and Payload Tube Control Panels. Work will be performed in Manassas, VA, and is expected to be complete by 2013. This contract was not competitively procured by the supervisor of Shipbuilding Conversion and Repair in Groton CT (N00024-09-C-2101).

Dec 12/08: Lockheed Martin Maritime Systems and Sensors in Manassas, VA received a $38.3 million modification to previously awarded contract (N00024-04-C-6207) for engineering services in support of the Acoustic – Rapid Commercial off The Shelf (A-RCI) program. The 550,000 additional engineering services hours will be used on TacLAN tasking related to Special Operations support, and to complete the new “BSY-2 Wrap Around Antenna (WAA),” which is listed as being a Virginia Class sonar.

DID requested clarification, and got it. BSY-2 is a Seawolf class system only. WAA is the Wide Aperture Array, and on the SSN-774 Virginia Class it evolved to the L-WAA (Lightweight Wide Aperture Array). The Virginia Class Block III bow has been redesigned to save money beginning with SSN 784; it will use the Large Aperture Bow (LAB) Array.

It turns out that the DefenseLINK release should read “technology insertions for the USS Jimmy Carter’s [SSN 23 Seawolf Class] BSY-2 WAA, and USS North Carolina [SSN 777 Virginia Class] LWAA TI-08 integration.” The exact work involved is technology insertion, integration, and modernization on USS Jimmy Carter and USS North Carolina, as well as the completion of the existing TI-08 effort and the Virginia Class Block III TI-10 Large Aperture Bow (LAB) Array effort for SSN 784.

Work will be performed in Manassas, VA (90%) and Syracuse, NY (10%) and is expected to be complete by June 2009. This contract was not competitively procured by US Naval Sea Systems Command.

Nov 5/08: The Virginia Class nuclear fast attack submarine Program Office receives the 2008 David Packard Excellence in Acquisition Award during a ceremony at Fort Belvoir, VA. This marks the third time (1996, 1998, 2008) that the Virginia Class Program Office has earned the award. The Virginia Class Program was recognized for excelling in 4 specific areas: reducing life-cycle costs; making the acquisition system more efficient, responsive, and timely; integrating defense with the commercial base and practices; and promoting continuous improvement of the acquisition process. Read “Virginia Class Sub Program Wins Acquisition Award” for further details.
dadao 发表于 2017-7-10 20:44 | 显示全部楼层
参考消息网7月10日报道 美联社7月8日发表题为《龙骨的搭建标志着攻击潜艇的正式建造》的报道称,命名为“俄勒冈”号的美国第20艘弗吉尼亚级攻击潜艇的龙骨8日在通用动力电船公司的制造厂搭建完成。

这一里程碑标志着一艘战舰正式开始建造。现代潜艇没有传统的全舰长度的龙骨,因为它们是由模块组成的。相反,在这次活动中,潜艇的赞助商用粉笔将她自己名字的首字母写在一块金属板上,以便焊工将其镌刻在潜艇上。

未来的美国潜艇“俄勒冈”号预计耗资约27亿美元,并将于2019年11月交付给海军。

美国康涅狄格州民主党众议员乔·考特尼表示:“由于需求处于最高水平,所以一旦‘俄勒冈’号下水,就会立即投入使用。”

龙骨的搭建正值国会和军方的许多人士渴望将更多的潜艇编入舰队之际。设在康涅狄格州的通用动力电船公司和弗吉尼亚州的纽波特纽斯造船公司,已经签订了每年建造两艘潜艇的协议。

众参两院军事委员会都批准了法案,授权在一些年份中建造三艘而不是两艘潜艇,并授权提供额外拨款,以便为进行更多的工作做准备。

美国康涅狄格州民主党参议员理查德·布鲁门塔尔说:“这是一项强有力的两党共识,即潜艇是我们大多数海军力量中最隐形、最强大和最具有生还能力的武器。”

海军称,“俄勒冈”属于这样一批潜艇,它们设计上的变化是为了在整个使用寿命中,减少在造船厂的维修保养时间,因此它们在使用寿命中就能多进行一次部署,共进行15次部署。

几个世纪以来,美国海军舰只一直有女性赞助人为其命名。据说,赞助商的精神和影响力在战舰的整个生命周期中为其提供指引。政府官员和高级海军军官夫人担任了许多以地名命名的战舰的赞助商。

“俄勒冈”号的赞助者是海军作战部长、潜艇员约翰·理查森上将的夫人达娜·理查森。理查森夫人说她想用35年作为军人配偶所学到的东西帮助水手及其家人。她说,军人们独特的生活方式令人受益匪浅,但也具有挑战性。
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