Armada de Estados Unidos

[RGSS]

Antiship Missiles Threaten Status Quo

The debate over China’s new DF-21D antiship ballistic missile and the impact it could have on sea power in the region is reviving concerns over the threat antiship missiles pose—a threat that had faded with the end of the Cold War.
Since the fall of the Soviet Union, Western naval strategists have seen little need to continue developing ship-killing missiles. The trend has been to retrofit weapons in service with advanced features. With few instances of antiship missiles being used against naval targets, many commands viewed the threat as remote. Several prominent projects were canceled as a result, including the French Future Antiship Missile program and Italy’s Ulisse long-range missile. This also explains the longevity of the Boeing Harpoon and MBDA’s Exocet, which have added capabilities to existing designs, and the U.S. Navy’s decision to retire the antiship version of Raytheon’s Tomahawk cruise missile.
But the situation is changing, especially in the Asia-Pacific region, where China, India and South Korea are building blue-water navies that will include carrier battle groups. Another concern is the proliferation of advanced antiship missiles, mainly of Russian origin, which are raising doubts about the effectiveness of Western ship defenses.
The DF-21D is actually of less concern—at least for now—than a salvo of Russian-made Club cruise missiles. A massed attack of antiship missiles would give a defender tens of seconds to react when detected on radar, compared with 12 min. for a ballistic missile. This is due to their low sea-skimming attack profile—as little as 2 meters (6.5 ft.) above the waves—and supersonic or high subsonic speed.
Antiship missiles are becoming more dangerous. Many feature advanced radar and infrared (IR) stealth designs, such as Kongsberg’s NSM and Saab’s evolved RBS-15. Modern missiles are wired for “smart” flight with, among other features, improved electronic counter-countermeasure capabilities. Weapons such as the latest Exocet Block 3 from MBDA fly elaborate attack profiles, pulling high g-forces and 3D maneuvers to defeat defensive systems. Other missiles dive at supersonic speed or, like the Club, fly meters above the waves at Mach 2. Supersonic weapons, moreover, don’t need heavy warheads due to the kinetic energy they develop and the incendiary effect of residual fuel.
Modern antiship missiles can be launched from ships, aircraft, coastal batteries or submarines. In some cases a single weapon type is used for all these platforms—for example, the Harpoon or Russian Kh-35 Uran.
As a result of renewed concerns about these weapons and fears that some navies could be outgunned in a confrontation, a number of missiles are under development or being radically upgraded.
There is a business as well as a strategic benefit to having an exportable, modern weapon: The Harpoon has been sold to 30 countries and produced in around 7,300 units, reducing cost.
Following termination of the Harpoon Block 3 program, which would have added a Rockwell Collins data link and improved attack features to the Boeing missile, the Block 2 is the sole heavy weapon in the U.S. antiship missile arsenal. Weighing 690 kg (1,518 lb.) and carrying a 220-kg warhead, Harpoon is turbojet-powered and has a range of 80 nm. It will likely evolve until a replacement comes from the many research programs dealing with high-speed strike missiles or other initiatives, such as the Long Range Anti-Ship Missile project initiated by the U.S. Defense Advanced Research Projects Agency. In this effort, Lockheed Martin is working on an extended-range Joint Air-to-Surface Standoff Missile (Jassm) derivative and a ramjet-powered supersonic missile (see p. 33), which are to fly in demonstrator form in 2013.
In Europe, MBDA’s Exocet MM40 Block 3 is the latest evolution of the Exocet, which dates to the 1970s. The main innovation is replacement of the rocket sustainer engine with a Microturbo TRI-40 turbojet, which solves the issue of the Block 2’s relatively short range. The Block 3 flies more than 100 nm. and benefits from new features such as advanced electronics and a corkscrew attack profile. The electronics are being retrofitted to the Block 2 air-launched AM39 Mod 2 and sub-launched ASM39 Block 2. Mod 2 Exocets carry 160-kg warheads and reach high subsonic speeds. They are in service with 35 countries and have been produced in more than 3,500 units. The Exocet is also an extensively used weapon, with at least 700 fired in action, many in the air-launched variant. MBDA is evaluating further improvements, including a new radar seeker and a data link.
MBDA also offers the Otomat Mk2 Block IV, which has an inertial navigation system (INS) and GPS for intermediate cruise flight, an active seeker and a radio link that allows the missile to be controlled during flight from a ship or helicopter. It has a range of more than 100 nm., weighs 770 kg and is fitted with a semi-armor-piercing 210-kg warhead.
MBDA contributed to the development of Kongsberg’s NSM, which uses the Exocet Block 3 engine. The NSM, which replaces the Penguin missile, has an imaging IR sensor for terminal guidance. The attack radar sensor opens up at ranges beyond 30 mi. An inertial and satellite navigation system is used for the mid-course phase and eventually combines with a data link or radio command. A highly accurate radar or laser altimeter is another standard feature. NSM is light—and so a candidate for helicopter launch—but delivers a heavy punch with a 120-kg warhead at a range exceeding 100 nm.
Saab and Diehl are producing the RBS-15 Mk3 missile, in use by the Swedish, German and Polish navies. With a range of more than 120 nm., the Mk3 is the latest variant of a family of missiles introduced in the 1980s. It weighs 630 kg, flies a sea-skimming profile, maneuvers at more than 8g during final attack and has a warhead of at least 250 kg.
Four companies have taken the lead in development of Russian antiship missiles—Zvezda, Novator, NPO Mashinostroyenia and Raduga.
The Zvezda-Strela Kh-35 Uran (known in the West as the SS-N-25 Switchblade) is jet-powered, weighs 600 kg, has a 143-kg warhead, 70-nm. range (a newer Uranium version doubles the range) and high subsonic speed. It conducts final attack 3-5 meters above the water.
Novator’s Club family includes specialized missiles launched from torpedo tubes and vertical launch systems, making it a popular international weapon. The antiship versions of the SS-N-27 Sizzler are the 3M-54E1 cruise missile, with 160-nm. range and high subsonic speed; and the 3M-54E, which includes a terminal rocket-powered stage that accelerates to Mach 2.9. Each weighs 2 tons, is 9 meters long and carries different warheads. The subsonic version has a 400-kg warhead and 150-nm. range, and the supersonic missile has a 200-kg warhead and 120-nm. range.
NPO’s Moskit (SS-N-22 Sunburn), at 4.2 tons and 9.2 meters long, is a ramjet-powered missile that flies at high altitude at Mach 3, or at a 7-20-meter sea-skimming profile at Mach 2.2. It has a range of 50-120 nm., and carries a 300-kg warhead.
The NPO P-800 Yakhont (SS-N-26 Sapless) is 3 tons, 9.75 meters long, ramjet-powered and reaches Mach 2.8. It can adopt a low-high-low profile, with a cruise altitude of 14,000 meters and final attack profile of 10-15 meters. High-altitude flight yields a 170-nm. range; at low altitude, range is less than 70 nm. The Yakhont has a 250-kg semi-piercing warhead and pulls 20g. It is the basis for the Indian-Russian BrahMos, now entering service.
China’s Cheta missiles are not advanced (the People’s Liberation Army Navy relies to a large extent on Russian missiles). The older C-601/611 missiles of Styx heritage are obsolete. But the newer C-801/802A missiles are 800-kg weapons, turbojet-powered, with 190-kg warheads, 100-nm. range, and loaded with INS and active radar guidance. The C-602 cruise missile is 1,350 kg, carries a 300-kg warhead and has a range of 160 nm. The C-705 cruise missile is 325 kg, has a 130-kg warhead and 80-nm. range.
None of these weapons compares with the best that Russian and Western companies are developing or deploy, but they are cheap and can be sold to countries that have no access to anything better.
Other countries have developed indigenous designs, such as Israel’s IMI Delilah SL, a turbojet missile with a range of more than 140 nm., for ground and air launch.
Taiwan has the Mach 2 HF-3, which has a range of 300 km.
South Korea’s Lig Nex1 C-Star is a turbojet missile with a range exceeding 80 nm.

By Andy Nativi
Genoa

Saludos

[RGSS]

LCS Creates Opportunities For Radar Makers

With a different coastal mission, the U.S. Navy’s new Littoral Combat Ship (LCS) fleet needed a set of radars with requirements much different than those developed domestically over the years. To fulfill this need, the Navy and prime contractors for the new ships turned to international radars that had already been developed for littoral missions in other parts of the globe, opening markets for international companies.
The use of international radars has also created a need for partnerships between those companies and domestic businesses to capture the U.S. military contracts.
“They didn’t have the radar they needed in the U.S. inventory,” says Erik Smith, general manager for defense and security systems at Sensis, a radar systems company located in East Syracuse, N.Y.
Sensis is now the U.S. representative for Saab Electronic Defense Systems, which has developed and deployed the sea-based version of its agile multi-beam radar to meet the requirements for the Independence-version LCS offered by the contracting team led by Austal USA of Mobile, Ala.
The other team, led by Lockheed Martin, tapped EADS North America’s TRS-3D radar for its LCS ships.
Founded in 1985 by former radar experts at GE Aerospace, Sensis specializes in radar and surveillance systems, with primary focus on civil aviation and defense.
The company has spent much of its military history as a radar contractor for the U.S. Marine Corps and is now looking to expand its reach into the other services.
The Saab partnership offers Sensis the opportunity to become a bigger player in the naval market, especially with the growing need for littoral intelligence, surveillance and reconnaissance, as is promised with the LCS, Smith says. “Around the world, ship-based littoral surveillance is a growing mission,” he says. And the partnership helps Saab grow its U.S. defense footprint too.
The Sensis-Saab radar purports to accurately detect small, agile targets at high altitudes; rocket, artillery and mortar targets; as well as small, highly maneuverable surface targets in severe clutter — just the kind of threats seen in coastal environments where the LCS is designed to deploy.
The radar offers air and surface surveillance and tracking, target identification for weapon systems and high-resolution splash spotting. “This radar has been proven to work on global naval platforms for years,” Smith says.
Through its partnership with Saab, Sensis is able to provide the Navy with U.S.-based access to the radar equipment, software and all associated radar system intellectual property. In addition, Sensis provides all U.S.-specific adaptations as needed by the Navy and any test and integration services.

By Michael Fabey

Saludos

[maximo]

LCS Creates Opportunities For Radar Makers

Estos lo que quieren es intentar venderle la moto a alguien. Sencillamente no me creo que los USA no tengan ningun radar que se aplique a estos buques. De hecho, sin salir de la familia del SPY, alguno se me ocurre.

[Jhom]

¿Que os parece el rumor de que a los nuevos clase Virginia se les va a añadir una seccion de 90 pies para llevar 194 Tommys?

Al parecer sustituirian a los 4 Ohio reconvertidos cuando estos se retiren alla por los 2020s, lo que conllevaria perder el 60% de la potencia de fuego convencional del arma submarina si no se reemplazan con algo igual de capaz.

¿Asisitiriamos pues al nacimiento de un nuevo tipo de submarino? El primer "Fast attack cruise missile submarine"... algo que tiene mucho sentido sabiendo la alergia de la Navy a perder potencia de fuego en cualquier arma y mas en la submarina, por las obvias capacidades añadidas destacando la de la discreccion.

¿Alguna opinion?

[JoeLewis]

Homenaje a los héroes de hoy: los US Navy SEALs



http://www.youtube.com/watch?v=uFXNyqhEHR8

[cancrexo]

Posible Helicoptero destruido por los Navy Seal, en el ataque a la vivienda donde se ocultaba Bin Laden:



Vía :http://i51.tinypic.com/20thrq0.jpg

[maximo]

Nueva LCS Oficina Ejecutiva que se creará

¿Y quien la dirigira? ¿El Maestro Yoda?

Pues alegre sin duda estoy.

[ATLANTA]

La US Navy honra el sacrificio de un SEAL bautizando a un destructor con su nombre

La US Navy va a bautizar este sábado un nuevo destructor de la clase Burke como el USS Michael Murphy, DDG-112, en memoria del teniente SEAL Michael Murphy, que dio su vida por la patria honrada y valerosamente, luchando contra un enemigo mucho más numeroso en las montañas de Afganistán.

....

Sin duda el máximo honor para todo marino.


saludos

ATLANTA

[ATLANTA]

El extraño helicóptero que los Navy SEALs dejaron en Paquistán



...

Como que no han podido destruirlo muy bien, el rotor de cola es lo más llamativo de este modelo y debieron meterle más C4.


saludos

ATLANTA

[XTeam_Skipper]

Viaje inaugural del George W. Bush CVN-77

USS George H.W. Bush Maiden Deployment
Friday, May 13, 2011, 10:37 AM

The George H.W. Bush Carrier Strike Group (GHWB CSG) departed for its maiden deployment May 11.

The strike group, led by the Navy's newest aircraft carrier, USS George H.W. Bush (CVN 77), and its nearly 6,000 Sailors; is scheduled to conduct operations in the U.S. Navy's 6th and 5th Fleet areas of responsibility.

The deployment is part of an ongoing rotation of U.S. forces supporting maritime security operations in international waters around the globe.

Working with allied and partner maritime forces, GHWB CSG units will focus heavily on maritime security operations and theater security cooperation efforts which help establish conditions for regional stability.

"The George H.W. Bush Strike Group is ready to go," said Rear Adm. Nora Tyson, commander of GHWB CSG. "These Sailors have worked extremely hard over the last year and we are fully prepared to execute any and all tasking in support of the nation's maritime strategy."

The five ships and eight aircraft squadrons of GHWB CSG consist of approximately 6,000 Sailors who have spent the last year conducting intensive training and certification exercises to establish a safe, cohesive organization capable of performing a wide variety of missions across the globe, ranging from counter-piracy and ground support operations to humanitarian assistance and disaster relief.

The George H.W. Bush Strike Group consists of Carrier Strike Group (CSG) 2, Carrier Air Wing (CVW) 8, Destroyer Squadron (DESRON) 22 staff, USS George H.W. Bush (CVN 77), guided-missile cruisers USS Gettysburg (CG 64) and USS Anzio (CG 68), and guided-missile destroyers USS Truxtun (DDG 103) and USS Mitscher (DDG 57).

http://www.marinelink.com/news/deployme ... 38547.aspx

Un saludo.

[zandar7]

Leyendo todo el hilo, parece increíble la capacidad antiaérea que obstenta un sistema AEGIS. Es prácticamente invulnerable, al menos por aire. Ni Growler, ni misiles Harm, ni F-22, ni B-2, ni nada de nada.

Es decir, que si ponemos nuestras cuatro F-100 en el estrecho de Gibraltar, ni siquiera empleando todo el ala embarcada de un CV americano sería suficiente para abrir el tapón.

[Mauricio]

Potential DDG-51 Flight III Growth Alarms

Jun 10, 2011

By Michael Fabey

As the possible requirements and expectations continue to grow for the proposed DDG-51 Arleigh Burke-class Flight III destroyers, so is the concern among defense analysts and contractors that the U.S. Navy may once again be trying to pack too much into one ship.

That is a particular worry for a ship that was chosen because it would be the fastest and most affordable way to deliver enhanced ballistic missile defense (BMD) capability with an upgraded Aegis defense system and, later, a new radar suite.

And yet it is the need to field the radar necessary for that upgraded BMD ability that is driving some of the additional requirements for the Flight IIIs. The radar is the Navy’s proposed Air and Missile Defense Radar (AMDR), and the service says it needs the sensor package to do simultaneous BMD and air defense at a level that is a magnitude better than what it will have with the Aegis upgrades.

The service conducted a radar/hull study in the latter half of the previous decade that prompted the Navy to truncate the procurement of the futuristic DDG-1000 Zumwalt-class ships to three from seven and restart the DDG-51 line – with the new Flight IIIs to be designed through the middle part of this decade – because it would be more cost-effective and quicker to enhance the Aegis system and put the AMDR on the redesigned Arleigh Burke.

“While our Radar/Hull Study indicated that both DDG-51 and DDG-1000 were able to support our preferred radar systems, leveraging the DDG-51 hull was the most affordable option,” Navy officials told Congress after the review’s completion. The estimated cost for two new DDG-51s is about $3.5 billion, while the current sticker price for the Zumwalts is a bit more than $3 billion.

The study is still classified, but a former high-ranking Navy officer intimately familiar with the study says, “Some pieces of it got hijacked. People who had an agenda kind of drove the study for a solution.” Defense analysts and radar component competitors say the Navy pushed to restart the DDG-51 destroyer line because of pressure from Aegis supporters in the service to boost that program.

Aegis-contractor Lockheed Martin, though, denies that there is any undue Aegis influence within the Navy.

Defense analysts, industry radar experts and even Navy officials acknowledge the dual-band radar planned for the Zumwalt would have been tweaked to provide BMD capabilities similar to those of the enhanced Aegis system.

Further, they say, the Zumwalt had other attributes – such as a lighter composite deckhouse and an integrated hybrid-electric propulsion system – that would have compensated for the relatively top-heavy and power-greedy AMDR.

Some of those design elements are being bandied about for the Flight III Arleigh Burke.

It is starting to appear, according to defense analysts and contractor officials, that the vessels will be built to essentially accommodate the AMDR. But the Navy’s top shipbuilder executive warns against following that course.

“Sometimes we get caught up in the glamour of the high technology,” Huntington Ingalls Industries CEO Mike Petters says. “The radars get bounced around. They get changed. Their missions get changed. The technology changes. The challenge is if you let the radars drive the ships, you might not get any ships built.”

[Yorktown]

110507-N-KK330-134 BATH, Maine (May 7, 2011) Guests await the christening ceremony for the Arleigh Burke-class guided-missile destroyer Pre-commissioning Unit (PCU) Michael Murphy (DDG 112) at General Dynamics Bath Iron Works in Bath, Maine. Michael Murphy was christened by Maureen Murphy, mother of the ship's namesake, Navy (SEAL) Lt. Michael Murphy. Murphy was posthumously awarded the Medal of Honor for his actions during Operation Red Wings in Afghanistan in June 2005. He was the first Sailor awarded the Medal of Honor since the Vietnam War. (U.S. Navy photo by Mass Communication Specialist 2nd Class Dominique M. Lasco/Released)

[Kraken]

Esto da vergüenza ajena.

En serio, si no sabes o no quieres traducir el artículo, simplemente haz un resumen y pon el enlace a la noticia. "Leer" las burradas que ahí aparecen es penoso.

El accidente habría tenido lugar mientras que el módulo se levantaba a cambiar de posición para seguir trabajando. Una fuente informó que los ojos de la almohadilla se desprendieron del módulo, haciendo que se caiga.

Esperemos que un módulo tan trabajador recupere pronto la visión y pueda volver a su labor...

[Zabopi]

¡hola! ya que hablamos de demostraciones de helicópteros, el que escribe frente a semejante poderío se rinde sin ofrecer resistencia.
.
Perdón, es que tenía ganas de soltar algo divertido