Prototype GHOST military watercraft claims a world's first
If you combined a stealth jet fighter and an attack helicopter and stuck them in the water, what would you get? Well, according to the folks at New Hampshire's Juliet Marine Systems (JMS), you'd get the GHOST marine platform. Privately developed for possible use by the U.S. Navy, the boat would reportedly be invisible to enemy ships' radar, while also being faster and more economical than existing military vessels. The company's big claim, however, is that GHOST is the world's first super-cavitating watercraft.
Supercavitation, in a nutshell, involves surrounding an object with a bubble of gas, so it can pass through the water with very little friction. In the case of GHOST, the objects in question are its two submerged buoyant tubular foils. Although the company isn't clear on how the process works, presumably the foils would have to be designed in such a way that when GHOST's gas turbines thrust it forward, water is deflected outward at the front of each foil, creating an envelope that closes behind it.
Whatever the case, JMS states that "GHOST is a combination aircraft/boat that has been designed to fly through an artificial underwater gaseous environment that creates 900 times less hull friction than water." Judging by that statement, it's hard to say if GHOST actually does create 900 times less friction, or if that's simply what they're aiming for.
The three-crew-member watercraft is intended primarily to patrol the perimeter of naval fleets, ready to spring into action against attacking small enemy boats. It is also being marketed as a means of protecting commercial vessels against pirate attacks. It can reportedly carry "thousands of pounds of weapons, including Mark 48 torpedoes" in an internal weapons bay, and could incorporate multiple weapons systems, capable of firing on several targets simultaneously.
It could also serve as a quiet, stealthy means of transporting troops to enemy beaches, or as a fast and efficient way of ferrying people and supplies to and from locations such as offshore oil platforms.
While there's presently no word on whether or not GHOST has any takers, JMSclaims to be already working with a large international defense company on a 150-foot version of the craft, and on creating an unmanned underwater vehicle that utilizes its super-cavitating technology.
Source: Danger Room
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“When I put on the devices and move my body, I see my hands having turned into the robot hands. When I move my head, I get a different view from the one I had before,” said researcher Sho Kamuro.
“It’s a strange experience that makes you wonder if you’ve really become a robot,” he said.
Professor Susumu Tachi, who specialises in engineering and virtual reality at Keio University, said systems attached to the operator’s headgear, vest and gloves send detailed instructions to the robot, which then mimics the user’s every move.
At the same time, an array of sensors on the android relays a stream of information which is converted into sensations for the user.
The thin polyester gloves the operator wears are lined with semiconductors and tiny motors to allow the user to “feel” what the mechanical hands are touching – a smooth or a bumpy surface as well as heat and cold.
The robot’s “eyes” are actually cameras capturing images that appear on tiny video screens in front of the user’s eyes, allowing them to see in three dimensions.
Microphones on the robot pick up sounds, while its speakers allow the operator to make his voice heard by those near the machine.
The TELESAR – TELexistence Surrogate Anthropomorphic Robot – is still a far cry from the futuristic creations of James Cameron, where US soldiers are able to remotely control the genetically engineered bodies of an extra-terrestrial race they wish to subdue.
But, says Tachi, it could have much more immediate – and benign – applications, such as working in high-risk environments, for example the inside of Japan’s crippled Fukushima nuclear plant, though it is early days.
“I think further research and development could enable this to go into areas too dangerous for humans and do jobs that require human skills,” he said.
Japan’s famously advanced robot technology was found wanting during the crisis at Fukushima, where foreign expertise had to be called on for the machines that went inside reactor buildings as nuclear meltdowns began.
Tachi said a “safety myth” had grown up around atomic technology, preventing research on the kind of machines that could help in the wake of a disaster.
But he said his kind of robot technology could help with the long and difficult task of decommissioning reactors – a process that could take three decades.
A remote-controlled android that allows its user to experience what is happening far away may have more than just industrial applications, he added.
“This could be used to talk with your grandpa or grandma living in a remote place and deepen communications,” he said.
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perception is a means to action and action is a means to perception.
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