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Results for "cvn-21"
The US Navy’s Nuclear Propulsion Contracts
18-Nov-2009 15:33 EST |
Related Stories: Americas - USA, Contracts - Awards, Contracts - Modifications, Engines & Propulsion - Naval, FOCUS Articles, Fuel & Power, Other Corporation, R&D - Contracted, Submarines, Surface Ships - Combat
Basic Nuclear Propulsion
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Several navies around the world currently use nuclear propulsion in at least some ships and submarines. The USA has had an all-nuclear submarine fleet for over 50 years, a policy that dates back to Adm. Hyman Rickover. Britain’s sale of its SSK Upholder Class to Canada (as the problem-plagued Victoria Class) has made them an all-nuclear submarine fleet as well. China, France and Russia all use naval nuclear propulsion within mixed submarine fleets, India is currently working to join this club via its SSN program, and Brazil is about to launch a program of its own. On the surface, America’s aircraft carriers became an all-nuclear fleet with the retirement of the USS Kitty Hawk [CV 63], and FY 2008-09 spending legislation has been is pushing the US Navy to use nuclear power in its future CG (X) cruisers and new amphibious ship classes. These surface ships are joined by France’s problem-plagued aircraft carrier FS Charles de Gaulle, and Russia’s Kirov Class cruisers.
The saga of the Charles de Gaulle serves as a reminder that adapting nuclear propulsion technology to the small spaces of a submarine, or fitting them to a surface warship, is no trivial feat. Much can go wrong, even in nations that have considerable naval nuclear propulsion experience. On the flip side, advances in design can offer significant benefits. The new nuclear plants in America’s Virginia Class and Seawolf Class fast attack subs, Britain’s new Astute Class fast attack submarines, and the USA’s forthcoming CVN-78 Gerald R. Ford Class aircraft carriers, offer designs that will save billions over the life of each ship by eliminating the standard mid-life reactor refueling.
This Spotlight article currently covers related American nuclear propulsion industrial base contracts since the beginning of FY 2006. The latest includes a $248.8 million contract to Bechtel for naval nuclear propulsion components…
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Dead Aim, Or Dead End? The USA’s DDG-1000 Zumwalt Class Program
15-Nov-2009 15:31 EST |
Related Stories: Americas - USA, BAE, Boeing, Budgets, Coastal & Littoral, Contracts - Awards, Design Innovations, Electronics - General, FOCUS Articles, General Dynamics, Issues - Political, Lobbying, Lockheed Martin, New Systems Tech, Surface Ships - Combat, T&C - IBM, Transformation
67% of the fleet
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The prime missions of the new DDG-1000 Zumwalt Class destroyer are to provide naval gunfire support and next-generation air defense in near-shore areas where other large ships hesitate to tread, possibly even as the anchor for an action group of stealthy Littoral Combat Ships and submarines. The estimated 14,500t (cruiser sized) Zumwalt Class will be fully multi-role, however, with undersea warfare, anti-ship, and long-range surface attack roles.
That makes the DDG-1000 suitable or another role – as a “hidden ace card,” using its overall stealth to create uncertainty for enemy forces. At over $3 billion per ship for construction alone, however, the program faced significant obstacles if it wanted to avoid fulfilling former Secretary of the Navy Donald Winter’s fears for the fleet.
True, or False?
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DID’s FOCUS Article for the DDG-1000 program covers the new ships’ capabilities and technologies, key controversies, associated contracts and costs, and related background resources. From the outset, DID has noted that the Zumwalt Class might face the same fate as the ultra-sophisticated, ultra-expensive SSN-21 Seawolf Class submarines. That appears to have come true, with news of the program’s cancellation at 3 ships. Or will it be 2?
The latest news involves more funds to finish the ship’s computing backbone, which has been identified as a concern in recent GAO reports…
Design & Preparations Continue for the USA’s New CVN-21 Super-Carrier
09-Nov-2009 17:24 EST |
Related Stories: Americas - USA, Budgets, Contracts - Awards, Contracts - Modifications, Design Innovations, Engines & Propulsion - Naval, Events, FOCUS Articles, Force Structure, Issues - Political, New Systems Tech, Northrop-Grumman, Other Corporation, Procurement Innovations, Surface Ships - Combat, Top Stories
USA’s Nimitz Class &
UK’s Invincible Class
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Some nations have aircraft carriers. The USA has super-carriers. The French Charles De Gaulle Class nuclear carriers displace about 43,000t. India’s new Vikramaditya/ Admiral Gorshkov Class will have a similar displacement. The future British CVF Queen Elizabeth Class and related French PA2 Project are expected to displace about 65,000t (British) – 74,000t (French), while the British Invincible Class carriers that participated in the Falklands War weigh in at around 22,000t. Invincible actually compares well to Italy’s new Cavour Class (27,000t), and Spain’s Principe de Asturias Class (17,000t). The USA’s Nimitz Class and CVN-21 Gerald R. Ford Class, in contrast, fall in the 90,000t-105,000t range. Hence the unofficial designation “super-carriers”. Just one of these ships packs a more potent air force than many nations.
Nimitz Class cutaway
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As the successor to the 102,000 ton Nimitz Class super-carriers, the CVN-21 program aims to increase aircraft sortie generation rates by 20%, increase survivability to better handle future threats, require fewer sailors, and have depot maintenance requirements that could support an increase of up to 25% in operational availability. The combination of a new design nuclear propulsion plant and an improved electric plant are expected to provide 2-3 times the electrical generation capacity of previous carriers, which in turn enables systems like an Electromagnetic Aircraft Launching System (EMALS, replacing steam-driven catapults), Advanced Arresting Gear, and integrated combat electronics that will leverage advances in open systems architecture. Other CVN-21 features include an enhanced flight deck, improved weapons handling and aircraft servicing efficiency, and a flexible island arrangement allowing for future technology insertion. This graphic points out many of the key improvements.
DID’s CVN-21 FOCUS Article offers a detailed look at a number of the program’s key innovations, as well as a list of relevant contract awards and events. The latest news involves the imminent keel-laying for the first ship of class, FY 2010 budget figures, and contract awards and testing milestones for its revolutionary EMALS catapults and AAG arrester system…
LPD-17 San Antonio Class: The USA’s New Amphibious Ships (updated)
05-Nov-2009 15:16 EST |
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LPD-17 cutaway
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LPD-17 San Antonio class amphibious assault support vessels are a new class of ship which is just entering service with the US Navy. Much like their predecessors, their mission is to embark, transport, land, and support elements of a US Marine Corps Landing Force. What changes are the capabilities and technologies incorporated to perform that mission. This new ship class includes significant internal technology and design upgrades, and is designed to operate accompanying platforms like the V-22 Osprey tilt-rotor aircraft and the Expeditionary Fighting Vehicle amphibious armored personnel carrier.
Between 10-11 scheduled ships of this class are slated to assume the functional duties of up to 41 previous ships, including the USA’s older LSD-36 USS Anchorage class dock landing ships (all decommissioned as of 2004, LSD-36 and LSD-38 transferred to Taiwan) and its LPD-4 USS Austin Class ships (12 built and serving, LPD 14 Trenton now India’s INS Jalashva). The San Antonio class ships may also replace 2 classes of ships currently mothballed and held in reserve status under the Amphibious Lift Enhancement Program (ALEP): the LST-1179 Newport class tank landing ships, and LKA-113 Charleston class amphibious cargo ships.
Welcome to Norfolk…
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Replacing that many existing ships is already a very tall order. While its design incorporates notable advances, the San Antonio Class has also had its share of teething problems. So, too, has the New Orleans shipyard to which most of this contract has been assigned. The number of serious issues encountered in this ship class have been much higher than usual, and more extensive. The initial ships have been criticized for sub-standard workmanship, and it took 2 1/2 years after the initial ship of class was delivered and accepted before any ship of class was sent on an operational cruise. Whereupon the USS San Antonio promptly found itself laid up Bahrain due to oil leaks. Meanwhile, costs are almost twice the originally promised amounts at over $1.7 billion per ship – 2 to 3 times as much as many foreign LPD classes, and more than 10 times as much as Singapore’s 6,600 ton Endeavour Class LPD.
DID’s FOCUS articles offer in-depth, updated looks at significant military programs of record. This is DID’s FOCUS Article for the San Antonio Class, detailing the ships’ unique features and capabilities, its program innovations and issues, ship timelines, and related contracts throughout the program’s history. As has become DID custom, the most recent additions are highlighted in green type. The latest developments include a contract to Raytheon that could be worth over $175 million, and the imminent commissioning of the LPD 21 New York, which contains steel from the destroyed World Trade Center…
SSDS: Quicker Naval Response to Cruise Missiles
03-Nov-2009 09:38 EST |
Related Stories: Americas - USA, C4ISR, Contracts - Modifications, Electronics - General, IT - Software & Integration, Protective Systems - Naval, Raytheon, Surface Ships - Combat, Surface Ships - Other
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Right now, in many American ships beyond the top-tier AEGIS destroyers and cruisers, the detect-to-engage sequence against anti-ship missiles requires a lot of manual steps, involving different ship systems that use different displays. When a Mach 3 missile gives you 45 seconds from appearance on ship’s radar to impact, however, seconds of delay can be fatal. Seconds of unnecessary delay are unacceptable.
Hence Raytheon’s Ship Self Defense System (SSDS), which uses software and commercial off-the-shelf (COTS) electronics to turn incoming data from several systems (radar, radar warning receivers, combat identification, electro-optics) into a single picture of prioritized threats. SSDS will then recommend an engagement sequence for the ship’s crew, or (in automatic mode) fire some combination of jamming transmissions, chaff or decoys, and/or weapons against the oncoming threat. The entire ship’s combat system concept, including the sensors and weapons, is known as Quick Reaction Combat Capability (QRCC) – and SSDS is the key element that ties it all together.
Recent developments involve ongoing PEA contracts…
- SSDS: Current Versions
- Contracts & Key Events, 2008 – Present [updated]
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Britain’s New CVF Future Carriers
25-Oct-2009 15:22 EDT |
Related Stories: Asia - China, BAE, Britain/U.K., Budgets, Contracts - Awards, Corporate Innovations, Europe - France, Events, FOCUS Articles, Force Structure, Issues - Political, New Systems Tech, Other Corporation, Partnerships & Consortia, Power Projection, Procurement Innovations, Project Management, Project Methodologies, Rolls Royce, Rumours, Surface Ships - Combat, Thales
RN CVF Concept
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In 1998, Britain’s Strategic Defence review (SDR) announced plans to replace the current set of 3 Invincible Class 22,000t escort carriers with 2 larger, more capable Future Aircraft Carrier (CVF) ships that could operate a more powerful force. These new carriers would be joint-service platforms, operating aircraft and UAVs from all 3 services (Navy, RAF, Army) in roles that could include ISR (Intelligence, Surveillance & Reconnaissance), force projection and logistics support, close air support, anti-submarine/ anti-surface naval warfare, and land attack.
The scale of the CVF effort relative to Britain’s past experiences means that the program structure is rather complex. It has passed through several stages already, and is being run and conducted within an industrial alliance framework. There is also a parallel international framework, involving cooperation with France on its PA2 carrier as a larger derivative of the CVF design.
This DID FOCUS article covers that structure and framework, ongoing developments, and the ships themselves as they round toward final design, construction, and fielding. The latest addition involves a report that one of the 2 carriers has been quasi-canceled, and Britain’s F-35 buy will be severely slashed…
Aussie Anti-Air Umbrella: The Hobart Class Ships
21-Oct-2009 13:39 EDT |
Related Stories: Americas - Other, Americas - USA, Australia & S. Pacific, Britain/U.K., Contracts - Awards, Contracts - Intent, Contracts - Modifications, Electronics - General, Events, FOCUS Articles, General Dynamics, IT - Software & Integration, Lockheed Martin, Missiles - Surface-Air, Other Corporation, Partnerships & Consortia, Policy - Procurement, Protective Systems - Naval, Radars, Raytheon, Sensors - Aquatic, Support & Maintenance, Support Functions - Other, Surface Ships - Combat, Transformation
F100 visits Sydney
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DID’s FOCUS articles offer in-depth, updated looks at significant military programs of record. The Royal Australian Navy took a pair of giant steps in June 2007, when it selected winning designs for its keystone naval programs: Canberra Class LHD amphibious operations vessels, and Hobart Class “air warfare destroyers.” This DID’s FOCUS article offers in-depth research and coverage of the Hobart Class competition and program organization, along with the new “air warfare destroyer’s” capabilities, and associated contracts, and related developments.
Under the SEA 4000 Air Warfare Destroyer program, Australia plans to replace its retired air defense destroyers with a modern system that can provide significantly better protection from air attack, integrate with the US Navy and other Coalition partners, offer long-range air warfare defense for Royal Australian Navy task groups, and help provide a coordinated air picture for fighter and surveillance aircraft. Despite their name and focus, the ships are multi-role designs with a “sea control” mission that also includes advanced anti-submarine and surface warfare capabilities.
Spain’s Navantia made an A$ 11 billion clean sweep, winning both the A$ 3 billion Canberra Class LHD and the A$ 8 billion Hobart Class Air Warfare Destroyer contracts. The new AWD ships were scheduled to begin entering service with the Royal Australian Navy in 2013, but that date has now slipped to 2014-2015. Recent updates involve a number of smaller contracts and progress reports, as well as the resolution of A$ 450 million worth of Australian shipbuilding contracts…
USS Enterprise Headed into Drydock (updated)
20-Oct-2009 09:16 EDT |
Related Stories: Americas - USA, Contracts - Awards, Contracts - Modifications, Northrop-Grumman, Support & Maintenance, Support Functions - Other, Surface Ships - Combat
Task Force One, 1964
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USS Enterprise, the world’s first nuclear-powered aircraft carrier, is headed into Extended Drydocking Selected Restricted Availability (EDSRA).
ESDRA is less extensive than a refueling and complex overhaul (RCOH) that refuels the ship’s nuclear reactors. Even so, this procedure still put “The Big E” into drydock for about 16 months to receive restoration and upgrades of all subsystems that affect combat capability and safety, plus hull inspections and recoating, radiological surveys, and other maintenance related evolutions below the waterline. The EDSRA will also address the propulsion system, offering more extensive propulsion plant repairs and testing than Enterprise’s shorter and more conventional Extended Selected Restricted Availability (ESRA) in 2002.
Contracts include…
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EMALS: Electro-Magnetic Launch for Carriers
29-Sep-2009 10:35 EDT |
Related Stories: Americas - USA, Britain/U.K., Contracts - Awards, Contracts - Modifications, Design Innovations, General Atomics, New Systems Tech, Other Corporation, R&D - Contracted, Small Business, Surface Ships - Combat, University-related
EMALS Components
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As the US Navy continues to build its new CVN-21 Gerald R. Ford Class carriers, few technologies are as important to their success as the next-generation EMALS (Electro-MAgnetic Launch System) catapult. The question is whether that technology will be ready in time, in order to avoid either costly delays to the program – or an even more costly redesign of the first ship of class.
Current steam catapult technology is very entertaining when it launches cars more than 100 feet off of a ship, or gives naval fighters the extra boost they need to achieve flight speed within a launch footprint of a few hundred feet. It’s also stressful for the aircraft involved, very maintenance intensive, and not really compatible with modern gas turbine propulsion systems. At present, however, steam is the only option for launching supersonic jet fighters from carrier decks. EMALS aims to leap beyond steam’s limitations, delivering significant efficiency savings, a more survivable system, and improved effectiveness. This free-to-view spotlight article covers the technology, the program, and its progress to date.
The latest developments include additional costs and continued testing, which is not yet finished…
- From Steam to Magnets: EMALS vs. Current Approaches
- Program Teams [NEW]
- Contracts and Key Events [updated]
- Additional Readings
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USS Theodore Roosevelt Headed Into Mid-Life Overhaul
30-Aug-2009 18:02 EDT |
Related Stories: Americas - USA, Contracts - Awards, Engines & Propulsion - Naval, Northrop-Grumman, Support & Maintenance, Surface Ships - Combat
CVN-71, Indian Ocean
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The USS Theodore Roosevelt [CVN 71] was built by Northrop Grumman’s Newport News sector. Commissioned on October 25, 1986, CVN 71 is expected to remain in service until 2036. As it approaches its mid-life stage, however, the wear begins to show. Instead of putting a ramp on its flight deck, buying it a nice red car, and pairing it with much younger ships, the US government has begun preparing instead for the refueling and complex overhaul (RCOH) of CVN 71 and its reactor plants.
The USS Theodore Roosevelt is scheduled to arrive at the Newport News shipyard in August 2009 to begin its RCOH, and Northrop Grumman has valued the planning phase alone at $558 million. So what exactly is a RCOH, and how expensive is it likely to get before all is said and done?
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