u.s. navy

Need for speed? How coasters are getting faster and scarier

On some of the newest roller coasters, there is no long, steady climb up a track before the screaming begins. The screaming starts right away when rides are launched using electromagnetic technology, called linear synchronous motor or LSM, that can catapult a coaster from zero to up to 100 miles an hour in just seconds.

The technology and speed allow for near vertical climbs and drops, gravity-defying stunts and record-breaking roller coaster designs. Six Flags Discovery Kingdom ride supervisor Charles Laureano says the electromagnetic technology, which was first installed on coasters in 1996, has improve dramatically. "It's a … Read more

Navy's X-47B makes first arrested landing

The U.S. Navy's X-47B is one step closer to being ready to start making test flights off of aircraft carriers after completing its first-ever arrested landing.

According to the Navy, the X-47B, also known as the Unmanned Combat Air System (UCAS), successfully grabbed hold of a special arrester cable with its tailhook, quickly stopping the aircraft during the May 4 test. That marked an important milestone in the development of the UCAS program.

The jet-powered X-47B is a prototype meant to fly autonomously, unlike many drones such as the Predator, which are usually flown remotely by ground-station-based pilots. … Read more

Watch the X-47B make its first catapult take-off

OK, so it was on dry land, not on an aircraft carrier. But first steps are first steps.

On Thursday, the U.S. Navy carried out its first-ever steam catapult launch of the X-47B Unmanned Combat Air System -- see the video embedded below -- and was apparently quite happy with the way things turned out. Before the UCAS demonstrator can make an actual take-off from a carrier, it needs to show that it can handle the unique rigors of being flung slingshot-style into the air instead of making a more leisurely jaunt down a runway.

"This test, in … Read more

Navy's new ship sails the seas on half the gas

SAN DIEGO -- The U.S. Navy spends a fortune every year on energy, so for a ship to complete a deployment having burned through just half the cash it had available for fuel is a very good sign of things to come.

For some time, the Navy has been saying many of the right things about its plans to go green, starting with a major biofuels initiative. And though a recent Wired report claims that the servicewide efforts have lost steam, the performance of the USS Makin Island could well be a bright spot.

As part of Road Trip 2012, … Read more

How Navy supercomputers help sailors beat an ancient nemesis

MONTEREY, Calif.--One after another, the framed pictures on both walls of the narrow hallway tell the story: submarines and naval ships churning white wakes as they slash through open ocean, each photo accompanied by unbidden gratitude.

"Thank you for your team's efforts & hard work! You ensure my safety and enhance my tactical advantage," one reads.

Welcome to the U.S. Navy's Fleet Numerical Meteorology & Oceanography Center. That long-and-hard-to-say name notwithstanding, this is one of the United States military's sharpest weapons in the never-ending battle for survival in rough seas all around the … Read more

U.S. Navy turns to Linux to run its drone fleet

Seeming eager to avoid potential malware attacks that could cripple its drone fleet, the U.S. Navy will begin installing Linux to control some of its autonomous flying vehicles.

The contract, which is worth $27,883,883, calls for a "Linux transition on the tactical control system software for vertical take-off (VTOL) unmanned air vehicle ground control stations."

According to The Register, the Navy has just one VTOL drone model, of which it hopes to eventually have 168, Northrop Grumman's MQ-8B Fire Scout, which "has the ability to autonomously take off and land on any aviation-capable … Read more

How the Navy's super railgun works (animation)

If you want to know how the U.S. Navy's futuristic electromagnetic railgun works, you could hop on over to the information page on the Office of Naval Research's Web site. Or you could watch a monotone Taiwanese animation.

If you're not familiar with the railgun, it's a favorite Navy project that is intended to be able to launch a 5-inch projectile more than 100 miles without the use of traditional explosives. Using a complex system that forces the projectile out of a ship-bound gun at more than 4,500 miles, the Navy hopes to be … Read more

Navy tests railgun that can shoot up to 100 miles

The U.S. Navy says it has tested one of two prototypes of its futuristic electromagnetic railgun, a weapon that could fire a 5-inch projectile up to 100 miles, yet which requires no explosives to fire.

The Office of Naval Research is evaluating competing railguns--one from BAE Systems, and one from General Atomics. Yesterday, ONR announced it has completed a successful test of BAE's model, and the Navy is expected to test-fire General Atomics' offering sometime in April.

"The firing at Naval Surface Warfare Center Dahlgren Division...kicks off a two-month-ling test series by [ONR] to evaluate the … Read more

Whoosh! U.S. Navy F-35C gets electromagnetic launch

The U.S. Navy said today it has demonstrated the successful integration of two of its key next-generation sea-based strike programs--the carrier version of the Joint Strike Fighter, and the all-new electromagnetic aircraft launch system.

Both the F-35C fighter and the EMALS launch technology are expected to see service eventually aboard the USS Gerald R. Ford, the Navy's next-generation aircraft carrier, as well as other Ford-class carriers.

The F-35C is the carrier variant of the controversial Joint Strike Fighter, a $1 trillion military program that has been the subject of cost overruns and a wide range of other problems. … Read more

Raytheon passes major Navy destroyer radar milestone

Raytheon this morning said that it has passed a major milestone in its bid to win a multi-billion dollar U.S. Navy radar contract.

The Tewksbury, Massachusetts military contract is currently competing against Lockheed Martin and Northrop Grumman for the lucrative contract to provide next-generation Air and Missile Defense Radar (AMDR) technology for the Navy's Arleigh Burke-class destroyers. As part of its efforts to win the deal, Raytheon has just surpassed 1,000 hours of degradation-free testing on its Gallium Nitride transmit/receive modules. Completing the 1,000 hours of testing, during which the modules were said to have … Read more