Hiển thị các bài đăng có nhãn Ships. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn Ships. Hiển thị tất cả bài đăng

Thứ Hai, 8 tháng 4, 2013

'LIKE A BLOWTORCH': Navy Ships to Be Equipped With Cutting-Edge Lasers

  • Navy laser shoots drone.jpg

    A solid state laser developed at the Naval Research Laboratory -- seen in the inset at left -- successfully shoots down a flying target, in this still image taken from video showing an exercise conducted by a technical team from the Naval Surface Weapons Center Dahlgren Division and managed & funded by ONR, Naval Sea Systems Command, OSD's High Energy Laser Joint Technology Office and supported by U.S. Fleet Forces Command.U.S. Navy

  • Navy laser shoots drone 5.jpg

    Jul. 30, 2012: The Laser Weapon System (LaWS) temporarily installed aboard the guided-missile destroyer USS Dewey (DDG 105) in San Diego, Calif., is a technology demonstrator built by the Naval Sea Systems Command from commercial fiber solid state lasers, utilizing combination methods developed at the Naval Research Laboratory.U.S. Navy / John F. Williams

  • Navy laser shoots drone 2.jpg

    An unmanned drone bursts into flames after being targeted by a ship-mounted laser gun developed by the U.S. Navy's Office of Naval Research.U.S. Navy

  • Navy laser shoots drone 4.jpg

    Jul. 30, 2012: The Laser Weapon System (LaWS) temporarily installed aboard the guided-missile destroyer USS Dewey (DDG 105) in San Diego, Calif.U.S. Navy / John F. Williams

  • Navy laser shoots drone 3.jpg

    120730-N-PO203-088 SAN DIEGO, Calif. (Jul. 30, 2012) The Laser Weapon System (LaWS) temporarily installed aboard the guided-missile destroyer USS Dewey (DDG 105) in San Diego, Calif., is a technology demonstrator built by the Naval Sea Systems Command from commercial fiber solid state lasers, utilizing combination methods developed at the Naval Research Laboratory. LaWS can be directed onto targets from the radar track obtained from a MK 15 Phalanx Close-In Weapon system or other targeting source. The Office of Naval Research's Solid State Laser (SSL) portfolio includes LaWS development and upgrades providing a quick reaction capability for the fleet with an affordable SSL weapon prototype. This capability provides Navy ships a method for Sailors to easily defeat small boat threats and aerial targets without using bullets. (U.S. Navy photo by John F. Williams/Released)

The Pentagon has plans to deploy its first ever ship-mounted laser next year, a disruptive, cutting-edge weapon capable of obliterating small boats and unmanned aerial vehicles with a blast of infrared energy.

Navy officials announced Monday that in early 2014, a solid-state laser prototype will be mounted to the fantail of the USS Ponce and sent to the 5th fleet region in the Middle East for real-world experience.

'It operates much like a blowtorch ... with an unlimited magazine.'

- Navy official

Video released by the Navy shows the laser lock onto a slow-moving target, in this case an unmanned drone, which bursts aflame in mid-flight. The drone soon catches fire and crashes into the sea below.

"It operates much like a blowtorch ... with an unlimited magazine," one official said.

There are potential targets for the laser in the 5th fleet region, which includes the Persian Gulf, where Iran operates small surveillance drones and is known for swarming and harassing U.S. Navy ships with small, armored speed boats.

Navy researches say so far the laser is 12 for 12 in testing, destroying its targets 100 percent of the time. Officials who briefed the press on the laser gun -- which the Navy calls a "directed energy pulse weapon" -- say it has non-lethal functions too, and may be used to send warning signals to other vessels.

One of its major advantages, the Navy said, is its relatively low cost to operate. "Its weapon round costs about $1 to shoot," said Rear Admiral Matthew Klunder, chief of Naval Research. Although the unit cost is higher -- at around $32 million to produce.

Still, Navy officials say this is a major accomplishment when compared to the Airborne Laser, the Air Force's now cancelled project to put nose-mounted lasers on its aircraft. Those lasers cost nearly $1.5 billion a piece.

“This wasn’t demonstrated on a barge. This was on a naval warship. And the performance results were quite astounding,” Klunder said.

There are some concerns with the new technology, however. Navy officials expressed worries with its ability to fire in poor weather conditions and believe the 5th fleet region will be a great test of the weapon’s abilities. It's also unclear if the laser can effectively take down faster moving objects, such as fighter jets.

Officials also would not reveal the range of this new weapon, describing it as more of a "close in" system. Energy levels were also classified. If successful, it will eventually be painted Navy grey and mounted on top of the ship with the rest of the major weapons systems.

The Navy and other armed forces have been experimenting for years with these directed energy weapons -- laser guns to you and me. Such weapons could be the future of warfare.

In April 2011, the Navy conducted a more limited test of a similar weapon, blasting a boat from the water with a laser weapon. Nevin Carr, chief of Naval Research at the time, said this energy weapon would not handle all types of threats, however.

"To begin to address a cruise missile threat, we'd need to get up to hundreds of kilowatts," Carr said.

The Navy is working on just such a gun of course.

Called the FEL -- for free-electron laser, which doesn't use a gain medium and is therefore more versatile -- it was tested in February 2011, consuming blistering amounts of energy and burning through feet of raw steel.

The FEL will easily get into the kilowatt power range, experts say. It can also be easily tuned as well, to adjust to environmental conditions, another reason it is more flexible than the fixed wavelength of solid-state laser. But the Navy doesn't expect to release megawatt-class FEL weapons until the 2020s; among the obstacles yet to be overcome, the incredible power requirements of such weapons.

Also in the Navy's futuristic arsenal: a so-called "rail gun," which uses an electomagnetic current to accelerate a non-explosive bullet at several times the speed of sound. Railguns are even further off in the distance, possibly by 2025, the Navy has said.

But lasers? Forget Buck Rogers and the 25th century. They’re here today.


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Thứ Tư, 3 tháng 4, 2013

BEEFING UP PRESENCE:In Response to N. Korea Threat, US Moving Ships

The Pentagon confirmed Tuesday that it is positioning an array of military assets near the Korean Peninsula, as the White House stressed that the "entire national security team" is focused on the escalating threats out of Pyongyang -- with the latest being a pledge to restart a key nuclear reactor. 

Pentagon spokesman George Little said that two destroyer warships, the USS Decatur and USS McCain, have arrived in the region as part of a missile-defense mission. Previously, the Pentagon had only revealed that it had moved the USS McCain to the region. 

"They have arrived at predetermined positions in the western Pacific, where they will be poised to respond to any missile threats to our allies or our territory," Little said Tuesday. 

In addition, the Pentagon has already announced plans to have two sea-based radar systems in the western Pacific. One is already in northern Japan; the other has not yet deployed and is currently conducting non-North Korean related systems tests off Pearl Harbor. 

The system in Japan can serve to protect the Korean peninsula as well as threats to the western United States that originate from North Korea. 

"I am not going to get into specifics of where our assets are in South Korea or elsewhere, but we stand ready to defend South Korea from external threats, wherever they may originate," Little said, while also calling for "the temperature to be taken down." 

Meanwhile, U.S. officials on Tuesday condemned North Korea's latest threat to restart a nuclear reactor that can make one bomb's worth of plutonium a year. The plutonium reactor was shut down in 2007 as part of international nuclear disarmament talks that have since stalled. The declaration of a resumption of plutonium production -- the most common fuel in nuclear weapons -- and other facilities at the main Nyongbyon nuclear complex will boost fears in Washington and among its allies about North Korea's timetable for building a nuclear-tipped missile that can reach the mainland U.S., technology it is not currently believed to have. 

State Department spokeswoman Victoria Nuland said it would be "extremely alarming" if North Korea followed through on the vow to restart the reactor, though added that there was "a long way to go" between the North stating an intention and following through on it. 

Nuland spoke ahead of a meeting between Secretary of State John Kerry and South Korean Foreign Minister Yun Byung-se. 

White House spokesman Jay Carney said the U.S. is taking steps to ensure it has the capacity to defend itself and its allies, and that President Obama is being updated regularly. 

"The entire national security team is obviously focused on this, as you would expect," Carney said. 

But Carney noted that a string of threats from North Korea toward the U.S. and South Korea so far have not been backed up by action, calling the threats part of a counterproductive pattern. He called on Russia and China, two countries he said have influence on North Korea, to use that influence to persuade the North to change course. 

A spokesman for North Korea's General Department of Atomic Energy said Tuesday scientists will quickly begin "readjusting and restarting" the facilities at its main Nyongbyon nuclear complex, including the plutonium reactor and a uranium enrichment plant. Both could produce fuel for nuclear weapons. 

Fox News' Justin Fishel and The Associated Press contributed to this report.


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