Fórum Defesa Brasil

Enviado: **Qui Jun 02, 2005 8:22 am**

DD(X) Quarter Scale Model Underwater Explosive Testing Successful

(Source: DD(X) National Team; issued Jun 1, 2005)

ABERDEEN, Md. --- The DD(X) National Team, led by Northrop Grumman and in partnership with Raytheon, General Dynamics, United Defense and Lockheed Martin, announces the successful completion of Underwater Explosion (UNDEX) testing on the DD(X) Quarter Scale Model.

This test provided a critical step in demonstrating that the DD(X) wave piercing tumblehome hull form fully meets the operational requirements set forth by the U.S. Navy.

The primary purpose of the testing was to determine the DD(X) hull form's reaction to an UNDEX to demonstrate the validity of the DD(X) design. Explosive charges were placed at predetermined distances from the DD(X) Model. Intensity of the charges increased as the test series progressed. A large plume resulted from the explosions and the DD(X) wave-piercing bow, tumblehome cross section, step deck area and rising stern responded as envisioned.

"The successful completion of this event increased the overall confidence level in the DD(X) hull design and was carried out at a fraction of the cost for testing a full-size model," said Brian Cuccias, Northrop Grumman Vice President and DD(X) Program Manager. "We are meeting Phase III exit criteria and are eager to begin detail design of this truly revolutionary ship."

The 150 foot DD(X) Quarter Scale Model was built at the Northrop Grumman Ingalls Shipyard in Pascagoula, MS. This scaled down model mitigates risks associated with a new design at a nominal investment. The UNDEX tests were conducted by Northrop Grumman employees with the support of U.S. Army personnel and under the auspices of the U.S. Navy. Data collection and analysis continue and the knowledge of the hull form response, as well as lessons learned will be applied to Phase IV of the DD(X) program.

In partnership with the United States Navy, Northrop Grumman, Raytheon, General Dynamics, Lockheed Martin and United Defense are leading a premier National Team to design DD(X) -- a revolutionary multi-mission destroyer. DD(X) technologies are currently in an advanced state of development and are destined to influence ship design efforts around the world for the remainder of this century.

The National Team, which includes more than 100 U.S. companies from 45 states, understands the importance of the rapidly maturing DD(X) Program to our nation, and is proud of the historic role this vessel will play in the advancement of ship -- and ship systems -- design.

The DD(X) National Team has successfully completed nearly a dozen incremental design review milestones, highlighting the DD(X) National Team's commitment to staying on schedule and on cost, as well as the extraordinary maturity and discipline of the program's approach to integrating unprecedented advanced technologies into the platform.

-ends-

Enviado: **Sex Jun 03, 2005 9:25 am**

http://peos.crane.navy.mil/ddx/

Imagem

DD(X) Transformational Systems

DD(X) is the centerpiece of a Family of Ships that will operate within the construct of the Surface Combatant Navy to deliver a vast range of war fighting capabilities that will maximize and revolutionize the combat capability of the Fleet.

:arrow:

(se forem ao link acima, cliquem nas várias partes integrantes do navio, aparece info detalhada acerca de cada uma)

Enviado: **Qui Jun 16, 2005 9:54 am**

Progress of the DD(X) Destroyer Program

Source: General Accountability Office (GAO)

Ref: GAO-05-752R

Released June 14, 2005

The DD(X) destroyer program currently is approaching two key decision points. One is Milestone B, when the Navy will decide on whether to authorize the award of a detail design and construction contract for production of the first ships. Milestone B was planned for March 2005 but has been delayed several times and is now expected to take place before the end of the fiscal year.
The program also will complete a critical design review by August 2005. This review is intended to demonstrate the design maturity of the ship and its readiness to proceed to production.
In this detailed report, GAO found that “the level of technology maturity demonstrated remains below what is recommended by best practices,” and expresses concern that “”eight is a challenge for individual subsystems and the ship as a whole.” It also found that the “volume search radar faces several technical challenges.”
Overall, GAO expressed some concern that, because of various testing accidents or delays, sufficient knowledge may not be available before key decisions are made.
This report analyses in detail five of the ship’s major subsystems, and in lesser detail another five.

Enviado: **Qui Jun 16, 2005 10:01 am**

Colegas:

Sabem se porventura este projecto do DDx será algo que no futuro possa substituir os americanos Arleigh Burke, ou plataformas mais velhas, ou de concepção mais obsoleta, ou será algo para os complementar?

Enviado: **Qua Ago 03, 2005 10:05 am**

DD(X) National Team Conducts Two More Consecutive, Successful Flight Tests of Long-Range Land-Attack Projectile

(Source: Northrop Grumman; issud Aug. 2, 2005)

PT. MUGU, Calif. --- The DD(X) National Team, led by Northrop Grumman Corporation and Raytheon Company has completed the fourth and fifth consecutive, successful guided flight tests of the long-range land-attack projectile for the advanced gun system on the U.S. Navy's DD(X) destroyer, demonstrating that the projectile meets threshold range requirements.

The tests, which took place June 29 and July 27 at the San Nicholas Island test range off the California coast (approximately 65 nautical miles from Point Mugu) broke a distance record for gun-launched munitions.

"The U.S. Marine Corps calls for precision volume fires, and the consistent successes of the guided flights confirm the projectile aboard DD(X) satisfies that requirement," said Brian Cuccias, Northrop Grumman vice president and DD(X) program manager. "Three years ago, these technologies were just a concept."

During the test during the fourth successful guided flight test (GF-05), the projectile displayed stable aerodynamics throughout its 183-second flight, successfully deployed its canards (fins), acquired the satellite downlink from the GPS, reached an altitude of 90,000 feet, covered 46.5 nautical miles and then impacted the target.

Initial reports indicate that the fifth successful guided flight test (GF-06) produced the same telemetry results, nearing aim point 63 nautical miles away. The engineering analyses of the tests will continue, but initial reports reveal that results are as anticipated and in accordance with test plans.

The projectile, designed to provide the Marine Corps with precision fire support from offshore, is provided by Lockheed Martin to BAE Systems, the DD(X) advanced gun system manufacturer.

The GF-05 and GF-06 tests continue the success of previous guided flights conducted in February and March, which demonstrated better-than-specified accuracy at a range of 32 nautical miles, and on June 23, when GF-04 set the record for range performance at 59 nautical miles inland.

"The success of GF-05 and GF-06 shows the DD(X) National Team is on track to provide the Marine Corps fire-support capability for timely engagements over the horizon with highly accurate and lethal precision-guided projectiles," said Jim Schoppenhorst, BAE's program director for DD(X). "The advanced gun system provides volume fire of 10 projectiles-per-minute, per gun, day or night, in virtually any weather conditions, with minimal collateral damage."

"Long-range land-attack projectile guided flights have demonstrated repeatability, quality, reliability, and exceptional performance," said Pete Jasanis, advanced gun system and long-range land-attack projectile program director at Lockheed Martin Missiles and Fire Control in Orlando. "Initial engineering analysis of telemetry data from GF-05 indicates excellent aerodynamic performance throughout the flight, and the quick-look analysis from GF-06 is equally encouraging."

The guided flight test series has conclusively demonstrated the projectile's ability to use an inertial measurement unit with in-flight updates from a global positioning system to extend range while simultaneously achieving precision-strike lethality in support of a Marine Corps coastal engagement from a DD(X) stationed far offshore.

The test series has also demonstrated the burn and thrust of the rocket motor and survival of the airframe structure (including rocket-motor components), deployment of an aft-located fin assembly, performance of the obturator (which holds the gas behind the projectile until it leaves the muzzle), canard deployment, GPS acquisition, controlled flight, and impact at GPS coordinates programmed into the projectile at initialization.

Due to the projectile's long range, the GF-05 and GF-06 tests, like the earlier firings, were conducted over water, requiring the use of radar to measure accuracy. The projectile was guided to precision accuracy as measured by the range-control and flight-following radars.

The Lockheed Martin Corporation-led long-range land-attack projectile team comprises Science Applications International Corporation, Custom Analytical Engineering, Alliant Techsystems, Inc., Goodrich Corporation, BAE Systems, and Honeywell. The long-range land-attack projectile is being developed for the Navy advanced gun system prime contractor, BAE Systems, as part of the DD(X) National Team led by Northrop Grumman's Ship Systems sector.

In partnership with the Navy, Northrop Grumman, Raytheon, General Dynamics, BAE Systems and Lockheed Martin are leading a premier National Team to design DD(X) - a revolutionary multi-mission destroyer. DD(X) technologies are currently in an advanced state of development and are destined to influence ship design efforts around the world for the remainder of this century.

The National Team, which includes more than 100 U.S. companies from 45 states, understands the importance of the rapidly maturing DD(X) Program to our nation, and is proud of the historic role this vessel will play in the advancement of ship - and ship systems - design. The DD(X) National Team has successfully completed nearly a dozen incremental design review milestones, highlighting the DD(X) National Team's commitment to staying on schedule and on cost, as well as the program's approach to integrating unprecedented advanced technologies into the platform.

-ends-

Enviado: **Qui Jun 08, 2006 7:25 am**

The USN budget for FY2007 provides funding for the first two ships to be built concurrently by General Dynamics Bath Iron Works and Northrop Grumman Ship Systems, rather than hold a competition, as was previously anticipated. Initial operating capability is planned for 2013.The number of ships required is planned to be between eight and twelve.

DD(X) replaces the DD 21 Zumwalt program which was for a class of 32 multimission destroyers to replace Oliver Hazard Perry class frigates (FFG 7) and Spruance class destroyers (DD 963) from 2012. Unlike previous classes of destroyer, which were primarily to counter deep water threats, the DD 21's primary mission would be to provide land attack support for ground forces and also to carry out traditional destroyer missions of anti-air, anti-surface and undersea warfare.

In April 2006, the USN announced that the first ship of the class will be designated DDG 1000 Zumwalt.

The DD(X) is planned to have a displacement of around 12,000t, less than the 14,000t or more of the DD-21, with a sustained speed of around 30 knots.

http://forum.keypublishing.co.uk/showthread.php?t=58614

Enviado: **Seg Jun 12, 2006 8:07 am**

gunner5" escreveu:The DD-21 Zumwalt-class Land Attack Destroyer was intended to replace the DD 963 and FFG 7 Classes of destroyer and frigate in today's inventory. The DD 21 System will provide an advanced level of land attack in support of the ground campaign and contribute to naval, joint and combined battlespace dominance in littoral operations.

On 01 November 2001 the Navy announced that it would issue a revised Request for Proposal (RFP) for the Future Surface Combatant Program. Formerly known as DD 21, the program will now be called "DD(X)" to more accurately reflect the program purpose, which is to produce a family of advanced technology surface combatants, not a single ship class. Instead of building the large DD 21 destroyer, the Navy may use the advanced technology on a full range of ships, including a downsized destroyer, an even smaller warship to operate in coastal waters, and a larger cruiser. One of the concerns about the DD-21 was that it was much larger than the current DDG-51 Arleigh Burke-class destroyers. Another concern [reportedly of Deputy Defense Secretary Paul Wolfowitz] was that the Navy was investing too much in a ship primarily designed to accommodate the long-range Advanced Gun System. The House Appropriations Committee voted in October 2001 to cut funding for the DD-21 program by 75 percent. The Navy subsequently restructured the program, which was renamed the DD-X. The new "downsized" destroyer is slated to displace 12,000 tons, instead of the 16,000 tons planned for the DD 21.

DD 21 is a multimission destroyer tailored for land attack warfare. DD 21 is required to support ground forces as a primary mission, in addition to performing traditional destroyer missions (i.e., anti-air, anti-surface, and undersea warfare). In that regard, DD 21 represents a departure from past design efforts, which were focused primarily on the deep-water threats of the Cold War era. The DD 21 will be a true fleet destroyer, capable of handling any mission that a Fleet commander might ask, from key wartime missions in land attack and undersea warfare to the equally important presence missions, noncombatant evacuations, escort, and diplomatic missions that have been closely associated with Navy destroyers for almost a century.

DD 21 will be designed with the necessary growth capacity to accommodate the additional missions of CG 21. CG 21 will be a fully capable next generation air dominance cruiser to replace today’s AEGIS Cruisers. This common design, along with an open systems architecture, will facilitate affordable and flexible mission upgrades to ensure this family of ships remains mission capable over its full service life.

DD 21 will be a multi-mission destroyer tailored to maritime dominance and land attack missions. DD 21 will push the envelope in improved joint connectivity, advanced computing systems, reduced signatures (radar cross section, infrared, acoustic, magnetic, and active signature management techniques) and optimal manning.

DD 21 will be an offensive, multi-mission destroyer capable of operating independently or with a Naval, Joint, or combined task force. The ship’s offensive, land attack orientation is being engineered and balanced with traditional multi-mission surface combatant capabilities that will be needed for DD 21 to dominate the maritime battlespace. While tailored for land attack, the ship’s ultimate mission is to fight and win any battle...open ocean or littoral.

With state-of-the-art information technologies, DD 21 will operate seamlessly with other naval, ground, and land-based air forces, and will be in accordance with the Navy's evolving "Network-Centric Warfare" concept of operations and Information Technology for the 21st Century architecture. The DD 21 emphasis on "sensor-to-shooter" connectivity will provide a naval or Joint Task Force commander with the multi-mission flexibility to destroy a wide variety of land targets while simultaneously countering maritime threats.

Like today's Arleigh Burke-class guided-missile destroyers, DD 21 will be a multi-mission ship, capable of providing forward presence and deterrence, and operating as a vital part of naval, joint and combined maritime forces to gain battlespace dominance in littoral operations. But unlike today's destroyers, DD 21's primary mission will be land attack support for ground forces. Armed with 5-inch/62 extended range guided munitions and 155mm Howitzers, the ship will provide naval gunfire support up to 100 miles inland. A land attack missile system will extend support between 100 and 200 miles. Tactical Tomahawk missiles will be able to reach targets from 200 to 1,600 nautical miles.

DD 21 will have the most advanced undersea warfare combat systems ever installed on a surface combatant. The ship's hangar will house attack helicopters as well as a system of unmanned aerial vehicles (UAV). In concert with other ships, DD 21 will contribute surveillance and force to establish and maintain local air superiority.

The DD 21 program emphasizes more than just improved offensive and defensive capabilities. Because DD 21's design will incorporate only the most advanced systems and materials on the market today, ships of the class can remain battle-ready with minimal maintenance and greatly reduced manpower. Design characteristics such as submarine-like survivability and a significantly reduced radar signature, achieved through a fully integrated topside design, will significantly expand the mission of the surface combatant.

As with previous destroyer designs, DD 21 will be focused on the key mission areas facing the nation and the Navy during its design phase. The Navy believes it needs a destroyer that is capable of exceptional performance in the littoral regions of the world and one that can provide significant support to forces ashore. As a result, DD 21 must excel in mission areas that include land attack and maritime dominance. DD 21 will provide an advanced level of land attack in support of the ground campaign, while contributing to naval, joint, and combined battlespace dominance in littoral operations. Given the large inventory of upgraded CG 47 and new DDG 51 Class ships that will be in the fleet by the time the first few DD 21 class ships begin to join the fleet after 2008, a robust self defense capability in air defense will be sufficient for this ship.

The DD 21 ships must possess the operational flexibility to meet the multimission forward presence and war-fighting requirements of the littoral environment and employ self defense against the threats documented in the 21st Century Surface Combatant Program System Threat Assessment Report. The DD 21 ships must also be capable of taking advantage of and maintaining the benefits of the military revolution stimulated by the rapid advances in information and information related technologies and exploit them through automation and system architectures capable of disseminating information to widely dispersed and dissimilar units to achieve an overall dominant maneuver concept of operations, as outlined in Joint Vision 2010 and concepts for future joint operations.

Specifications
Displacement 16,000 12,000 tons
Builder Bath and Ingalls
Power Plant Integrated Power System (IPS)
Length TBD feet [Panama Canal transit capability]
Beam TBD feet [Panama Canal transit capability]
Draft no more than 28 feet
Armament 2 - 155mm Advanced Gun System
117-128 VLS cells
[256 VLS cells without AGS]
Evolved Sea Sparrow Missile
Tactical Tomahawk Block IV
Advanced Land Attack Missile
Systems Multi-Function Radar (MFR)
Volume Search Radar (VSR)
Naval Surface Fire Support Weapon Control System (NWCS)
Speed TBD knots ( mph)
Crew Threshold: 150
Objective: 95
[vice traditional = 440]
Aircraft 2 SH-60 LAMPS helicopters
Costs $750 million procurement cost objective (for the fifth ship in each shipyard in FY 1996 dollars)
$2,700 (FY 1996) per hour underway operation and support (O&S) cost objective, excluding fleet modernization activities and sustaining engineering elements [about one-third the O&S cost of a conventional surface combatant].

Name Number Builder Homeport Ordered Comm Decomm
DD-21 Bath/Ingalls 2004 2011 2051
DD-22 Bath/Ingalls 2006 2012 2052
DD-23 Ingalls 2006 2012 2052
DD-24 Bath 2006 2012 2052
DD-25 Ingalls 2007 2013 2053
DD-26 Bath 2007 2013 2053
DD-27 Ingalls 2007 2013 2053
DD-28 Bath 2008 2014 2054
DD-29 Ingalls 2008 2014 2054
DD-30 Bath 2008 2014 2054
DD-31 Ingalls 2009 2015 2055
DD-32 Bath 2009 2015 2055
DD-33 Ingalls 2009 2015 2055
DD-34 Bath 2010 2016 2056
DD-35 Ingalls 2010 2016 2056
DD-36 Bath 2010 2016 2056
DD-37 Ingalls 2011 2017 2057
DD-38 Bath 2011 2017 2057
DD-39 Ingalls 2011 2017 2057
DD-40 Bath 2012 2018 2058
DD-41 Ingalls 2012 2018 2058
DD-42 Bath 2012 2018 2058
DD-43 Ingalls 2013 2019 2059
DD-44 Bath 2013 2019 2059
DD-45 Ingalls 2013 2019 2059
DD-46 Bath 2014 2020 2060
DD-47 Ingalls 2014 2020 2060
DD-48 Bath 2014 2020 2060
DD-49 Ingalls 2015 2021 2061
DD-50 Bath 2015 2021 2061
DD-51 Ingalls 2015 2021 2061
DD-52 Bath 2016 2022 2062
DD-53 Ingalls 2016 2022 2062

greetings gunner5"

Crédito:
Gunner5"

em
http://forum.keypublishing.co.uk/showth ... post943040

Enviado: **Seg Jun 12, 2006 10:25 am**

The Navy’s current estimate is $3.3 billion for each lead ship while follow ship costs are projected to be significantly less. Based on the current build profile, the cost estimate for the fifth ship is $2.3 billion (FY11 dollars). Congress, in the FY06 Authorization Act, set a cost cap of $2.3 billion on the fifth ship in the DDG 1000 class.

Discussions about ship costs must also consider the changing value of money over time. For example, the lead DDG 51 Arleigh Burke was purchased in 1985 for $1.2 billion, but accounting for realistic inflation in the industries that make up shipbuilding, that ship would cost $2.4 billion today. With significant improvements across the board, $3.3 billion for each lead DDG 1000 versus the $2.4 billion (FY07 $) lead DDG 51 is a good value.

:shock:

Enviado: **Seg Jun 12, 2006 10:28 am**

quem pode, pode :wink:

Enviado: **Qua Out 25, 2006 6:21 am**

Raytheon Successfully Integrates Final Element of Dual Band Radar for DDG 1000 Zumwalt Class Destroyer

TEWKSBURY, Mass., Oct. 24, 2006 /PRNewswire/ -- Raytheon Company (NYSE: RTN) has successfully integrated the engineering development model, S-Band array with receiver, exciter and signal/data processing equipment for the Volume Search Radar (VSR) portion of the DDG 1000 destroyer's Dual Band Radar (DBR).

The company is developing DBR for the next-generation Zumwalt Class destroyer. The VSR equipment was successfully operated with the S-band array and Beam Steering Controller software provided by Raytheon subcontractor Lockheed Martin.

"The Dual Band Radar is a critical asset to the DDG 1000 mission and the safety of our sailors," said Captain James Syring, the U.S. Navy's program manager for DDG 1000. "The radar project's schedule has been challenging, but achieving this critical milestone tangibly demonstrates the substantial progress being made on the program."

"The fact that this critical step was successfully completed on schedule can be attributed to the teamwork between the Navy and industry, as well as team dedication," said Ed Geisler, Raytheon vice president and DDG 1000 program manager, responsible for all DBR activity. "This teamwork has been a hallmark of the DDG 1000 program since its beginning."

The DBR is an active, phased-array, multi-function radar system, which incorporates X- and S-band arrays in a complementary manner to provide surveillance, target tracking and engagement support capabilities superior to those of conventional single-band radars.

The successful integration of the S-band array demonstrates progress toward the operation of a fully integrated Volume Search Radar, which is the final component of the DBR. Previously, Raytheon had successfully developed and tested the X-band component of the DBR, known as the AN/SPY-3, and recently proved its performance in extensive at-sea testing.

Under Raytheon's leadership, the DBR integration of both the SPY-3 and VSR components has advanced on schedule, and the recently completed milestones bring the advanced DBR closer to deployment on the Zumwalt Class destroyers, the CVN-78 next generation aircraft carrier and other future U.S. Navy ships.

Under the Navy's DDG 1000 Detail Design and Integration contract awarded in 2005, Raytheon IDS serves as the prime mission systems equipment integrator for all electronic and combat systems for the DDG 1000 Zumwalt Class Destroyer program.

Based in Tewksbury, Mass., Integrated Defense Systems is Raytheon's leader in Joint Battlespace Integration providing affordable, integrated solutions to a strong international and domestic customer base, including the U.S. Missile Defense Agency and the U.S. Armed Forces and the Department of Homeland Security.

Raytheon Company, with 2005 sales of $21.9 billion, is an industry leader in defense and government electronics, space, information technology, technical services, and business and special mission aircraft. With headquarters in Waltham, Mass., Raytheon employs 80,000 people worldwide.

Contact:
Chuck Larrabee
978.858.4259

http://www.globalsecurity.org/military/library/news/

Enviado: **Qua Out 25, 2006 6:32 am**

AAAAARGGGGGGGGGHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH

O meu ódio de estimação :twisted:

Enviado: **Qua Out 25, 2006 6:41 am**

Sintra escreveu:AAAAARGGGGGGGGGHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH

O meu ódio de estimação

tanto ódio só poderá vir a dar em amor

DD(X) o navio preferido no nosso colega Sintra :mrgreen:

Enviado: **Qua Out 25, 2006 7:07 am**

O ângulo da proa ao contrário do vulgar em navio será para quê?

Para acentuar as características Stealth?

Mas isso não fará com que ao cortar as ondas, a água escorra pela proa toda?

Enviado: **Qua Out 25, 2006 7:20 am**

Rui Elias Maltez escreveu:O ângulo da proa ao contrário do vulgar em navio será para quê?

Para acentuar as características Stealth?

Mas isso não fará com que ao cortar as ondas, a água escorra pela proa toda?

sinceramente também gostava de saber...o porquê do regresso do "esporão de proa" (será para abordagens :mrgreen:

)

suponho que seja para reduzir a assinatura do radar, tb já vi algures um projecto de um navio stealth inglês que tb tem a proa ao contrário.

deixa lá, quando os especialistas sairem da tasca eles elucidam-nos :wink:

Enviado: **Qua Out 25, 2006 7:41 am**

Ainda tenho o carrascão a escorrer, tive de sair da tasca a correr para responder aos srs apressados :twisted:

Ao contrário dos navios com proas convencionais que cortam (piercing) as ondas, a proa do DDG 1000 está projectada para o navio mergulhar na onda, diminuindo assim a sua silhueta radar. Não se esqueçam que este navio foi projectado, não para escoltar Task Forces mas sim para ataques terrestres, quer em profundidade com os seus mísseis quer em apoio de tropas com o fogo dos seus canhões de 155 mm AGS (Advanced Gun System), capazes de atingir alvos a mais de 100 km de distância. A sua utilização é costeira e não oceanica e portanto os problemas de navegabilidade dos DDG 51 (por exemplo) não se põem. O facto de navegar quase submerso, dificultando o uso das armas não é problemático pois onde elas vão ser usadas, perto da costa, as condições de navegabilidade são diferentes. Capice? Já posso voltar para a tasca?