L'US Navy teste un nouveau véhicule sous-marin autonome multimissions ayant la forme d'un thon robotisé | Heron | Scoop.it

Norfolk, Va. —- The Navy is testing a stealthy, 4 foot-long fish-shaped autonomous underwater vehicle designed to blend in with undersea life and perform combat sensor functions, service officials explained.

The so-called “bio-memetic” undersea vehicle is currently being developed as part of the Chief of Naval Operations Rapid Innovation Cell,  or CRIC – a special unit set up by CNO Adm. Jonathan Greenert in 2012 to explore the feasibility of rapidly turning around commercially available technologies for Naval military use.

“It mimics a fish. It looks like a fish. We call it robo-tuna, affectionately, but it is a UUV (unmanned undersea vehicle).  It does not have a propeller or a jet. It actually swims by flipping its tail around,” said Capt. Jim Loper, concepts and innovation department head, Navy Warfare Development Command, Norfolk.

The robot-fish is highly maneuverable and can accelerate quickly, reaching speeds up to 40 knots, Loper said. Being propelled by its tail instead of a shaft or propeller helps it remain stealthy and energy efficient. The shark-like sensor is engineered to carry a range of payloads from acoustic sensors to underwater cameras, he explained.

Built in Massachusetts by a firm called Boston Engineering, the robot fish could be used for a range of missions including undersea mine detection or prolonged surveillance of ships, ports and submarines.

“We’re imaging this can loiter for days, possibly weeks on a battery that allows it to maintain its position. This is a sensor we can put out there that matches in with the local life so to speak,” Loper added.

The UUV is currently configured with a lithium ion battery and is engineered so that its front end remains stationary in order to maximize sensor performance.

Read more: http://defensetech.org/2014/07/02/navy-builds-its-own-tuna-robot/#ixzz36V53PX63
Via Patrick H.