Tag Archives: unmanned underwater vehicles (UUVs)

The Sea Hunter Drone

darpa sea hunter. image from DARPA

The Anti-Submarine Warfare (ASW) Continuous Trail Unmanned Vessel (ACTUV) is developing an unmanned vessel optimized to robustly track quiet diesel electric submarines. … capable of missions spanning thousands of kilometers of range and months of endurance under a sparse remote supervisory control model. This includes…autonomous interactions with an intelligent adversary.
Excerpts from Anti-Submarine Warfare (ASW) Continuous Trail Unmanned Vessel (ASW Continuous Trail Unmanned Vessel (ACTUV))

See also SeaWeb live, DARPA Hydra

First Find then Erase Pollution

subcultron, image from https://ec.europa.eu/digital-agenda/en/news/bio-inspired-robots-will-examine-waters-venice

Subcultron is a swarm of at least 120 self-directing, underwater robots being developed by scientists in six countries to monitor Venice’s polluted waterways and transmit environmental data to government officials.The robots, shaped like fish, mussels, and lily pads to mimic the species’ hydrodynamics, carry sensors to monitor water conditions like temperature and chemical composition…The swarm communicates via the Internet-capable lily pads…
The robots use lithium ion batteries and solar cells for power. (Yes, enough sunlight gets through.)Some of the robots carry cameras. Others have electrodes that allow them to “see” by measuring objects crossing the electric fields they generate.Using wireless signals, human monitors can take over from the swarm’s AI software if something goes wrong. The European Commission has granted the project €4 million ($4.4 million).
Thomas Schmickl, the inventor, …..plans to build robot swarms that can monitor the oceans or even faraway moons that have water.

Excerpts from Innovation Subcultron, Bloomberg Business Week, Jan. 28, 2016

Where the Money Goes: 2015 US Military Spending

Railgun. Image from wikipedia

U.S. Deputy Defense Secretary Robert Work on Wednesday, Jan. 28, 2015 urged NATO allies to develop and make more innovative weapons, and said bold action was needed to stay ahead of rapid weapons development by China, Russia and other countries.  Work said the Pentagon has a new plan called “Defense Innovation Initiative” and a separate effort targeting longer-term projects to ensure that the United States continues to have a decisive competitive advantage against potential foes.

Work said concerns about advances by other countries were a key reason that the Pentagon’s fiscal 2016 budget plan to be delivered to Congress will exceed budget caps set by Congress and reverse five years of declines in U.S. military spending.   He said the budget would include “significant” investments in nuclear weapons, space control capabilities, advanced sensors, missile defense and cyber, as well as unmanned undersea vehicles, high-speed strike weapons, a new jet engine, high-energy lasers and rail gun technology…..Lockheed Martin Corp  and Boeing  and other key weapons makers have repeatedly urged the Pentagon to step up investments in key technologies….

Kendall said the department would also earmark funds for development and prototyping of a new “next-generation X-plane” that would eventually succeed the F-35 fighter jet, and a new engine.

Excerpts, ANDREA SHALAL, Pentagon official urges NATO to focus on innovative weapons. Jan 28, 2015

The SeaWeb Live: sound waves, drones and gliders

image from bluefinrobotics.com

UUVs [unmanned underwater vehicles]  will probably play a bigger role as roving wireless nodes that increase the reach of underwater networks. The latest “glider” UUVs consume very little battery power…. Already, gliders serving as “mules” are descending to sensors in deep water where they acoustically collect information. They then ascend to the surface and send the data via radio, says David Kelly, chief executive of Bluefin Robotics, which provides UUVs to half a dozen navies.

The US Navy has ordered several gliders to form underwater mobile networks. With no engine noise, a stealthy “swarm” of gliders could monitor submarines and ships entering a strait, for example, surfacing to transmit their findings. Floating gateway nodes, dropped from the air, allow messages to be sent to submerged devices via low-frequency acoustic signals. This scheme, known as Deep Siren and developed by Raytheon, an American defence contractor, has been tested by the British and American navies.

“Underwater networking will put an end to the ‘data starvation’ experienced by submarines”.  The combination of acoustic signalling and UUVs, which can deliver data physically, will put an end to the “data starvation” experienced by submarines, as America’s submarine command described it in a report last year. Often incommunicado, subs have been condemned to “lone wolf” roles, says Xavier Itard, head of submarine products at DCNS, a French shipbuilder. His firm is developing a funnel-shaped torpedo-tube opening that would make it easier for a UUV to dock with a submarine. Being able to send messages quickly via acoustic networks would enable submarines to take on more tactical roles—inserting special forces when needed to a nearby battlefield, say, or supporting ground operations by launching cruise missiles from the depths.

The Soviet-built ELF radio system remains a “backbone” of Russia’s submarine communications, according to a Norwegian expert. But in a clear vote of confidence in newer technologies, America shut down its own system in 2004. Thanks to steady progress in undersea networks, what was once a technological marvel was, a US Navy statement explained, “no longer necessary”. Whether via sound waves, laser pulses, optical fibres or undersea drones, there are now better ways to deliver data underwater.

Excerpt , Underwater networking: Captain Nemo goes online, Economist Technology Quarterly, Mar. 9, 2013, at 7