Subscribe free to our newsletters via your
. 24/7 Space News .




Subscribe free to our newsletters via your




















WATER WORLD
Seawater-drinking battery promises power boost to long-range submersibles
by Brooks Hays
Washington (UPI) Jun 16, 2017


Noiseless river 'bubble' taxi sails through Paris test
Paris (AFP) June 16, 2017 - An odd-looking electric boat taxi whose inventor believes it could be an eco-friendly transport solution for cities worldwide was put to the test in Paris for the first time Friday.

The brainchild of French yachtsman Alain Thebault, the aerodynamic Sea Bubble made no noise and no waves as it took a star turn on the River Seine with Paris Mayor Anne Hidalgo aboard.

"It was a perfect flight," Thebault, 54, said after putting the prototype through its paces between the Eiffel Tower and the Musee d'Orsay.

The white craft skimmed about half a metre (20 inches) over the Seine, executing turns while pausing occasionally to yield to passing ducks.

"It's quiet, comfortable and fun," said Hidalgo, who has backed the project from the start and hopes it will provide an eco-friendly alternative for getting around the French capital within four years.

The boat is similar to a hydrofoil, with fibreglass foils that deploy to hoist it into the air, powered by electric batteries, and capable of reaching the maximum allowed speed of 18 kilometres (11 miles) per hour.

"It works like the wings of an airplane in the air. After it reaches a certain speed the Bubble lifts off," Thebault said.

A Sea Bubble means "zero noise, zero waves and zero (carbon) emissions," he added.

Thebault said he has received "an avalanche of requests" from cities including Miami and Seattle, Tokyo, Bangkok and no fewer than 15 cities in India.

A team of MIT scientists have developed a battery that derives power from seawater. The technology promises to extend the range and capabilities of unpiloted underwater vehicles, or UUVs.

Scientists spun the technology off into a startup company called Open Water Power. The company was recently acquired by L3 Technologies, an established tech firm.

Most submersibles use lithium ion batteries, which are expensive to maintain and have a tendency to catch on fire. OWP's battery is cheaper, safer and longer-lasting.

The batter consists of alloyed aluminum, a nickel-coated cathode and an alkaline electrolyte sandwiched between the electrodes. The battery's components require seawater to function.

Seawater is sucked in and directed at the cathode, where it is split into hydroxide anions and hydrogen gas. A reaction between the anions and aluminum anode produces aluminum hydroxide and releases electrons. The electrons are drawn back toward the cathode, completing cycle.

Harmless byproducts, aluminum hydroxide and hydrogen gas, are expelled into the ocean. Corroded aluminum anodes can be cheaply and easily replaced, prolonging the battery's lifespan.

"Our power system can drink sea water and discard waste products," Ian Salmon McKay, one of the battery's inventors, told MIT. "But that exhaust is not harmful, compared to exhaust of terrestrial engines."

Currently, the battery gives UUVs a range of 100 nautical miles. Engineers hope to eventually increase the battery's range to 1,000 nautical miles.

The U.S. Navy recently hired OWP to replace the batteries powering acoustic sensors used to identify enemy submarines. The company's batteries could be used to power variety of underwater missions, whether military, industrial or scientific.

WATER WORLD
Boeing, Huntington Ingalls giving boost to Navy UUV program
Washington (UPI) Jun 8, 2017
Boeing and shipbuilder Huntington Ingalls Industries are partnering to design and build unmanned undersea vehicles in support of a U.S. Navy program. The teaming, which will leverage design and production facilities in California, Virginia and Florida, to expand the autonomous paradigm for UUV's for the Navy's Advanced Undersea Prototyping program. "This partnership provides the ... read more

Related Links
Water News - Science, Technology and Politics

Thanks for being here;
We need your help. The SpaceDaily news network continues to grow but revenues have never been harder to maintain.

With the rise of Ad Blockers, and Facebook - our traditional revenue sources via quality network advertising continues to decline. And unlike so many other news sites, we don't have a paywall - with those annoying usernames and passwords.

Our news coverage takes time and effort to publish 365 days a year.

If you find our news sites informative and useful then please consider becoming a regular supporter or for now make a one off contribution.

SpaceDaily Contributor
$5 Billed Once


credit card or paypal
SpaceDaily Monthly Supporter
$5 Billed Monthly


paypal only

Comment using your Disqus, Facebook, Google or Twitter login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle

WATER WORLD
To Be or Not to Be: At 20 ISS Goes Strong, But for How Long

Pence hails new NASA astronauts as 'best of us'

Additional Astronaut on the Space Station Means Dozens of New Team Members on the Ground

Roscosmos Says Cooperation With NASA Unaffected by 'Political Outbursts'

WATER WORLD
Proton returns to flight with US satellite after 12 month hiatus

NASA awards Universal Stage Adapter contract for SLS

Russian rocket returns to service with launch of US satellite

Ariane 5 launches its heaviest telecom payload

WATER WORLD
Walkabout Above 'Perseverance Valley'

Opportunity Surveying the spillway into Perseverance Valley

Window to a watery past on Mars

NASA Finds Evidence of Diverse Environments in Curiosity Samples

WATER WORLD
Moon or Mars - humanity's next stop

China's space station to help maintain co-orbital telescope

Seeds of 5,000-year-old tree bud after returning from space

Reusable craft are in CASIC's plans

WATER WORLD
Jumpstart goes into alliance with major aerospace and defence group ADS

Thomas Pesquet returns to Earth

Propose a course idea for the CU space minor

Leading Global Air And Space Law Group Joins Reed Smith

WATER WORLD
New computing system takes its cues from human brain

Oyster shells inspire new method to make superstrong, flexible polymers

Changing the color of laser light on the femtosecond time scale

Researchers create 3-D printed tensegrity objects capable of dramatic shape change

WATER WORLD
Flares May Threaten Planet Habitability Near Red Dwarfs

A planet hotter than most stars

ALMA Finds Ingredient of Life Around Infant Sun-like Stars

Hubble's tale of 2 exoplanets - Nature vs nurture

WATER WORLD
A whole new Jupiter with first science results from Juno

First results from Juno show cyclones and massive magnetism

Jupiters complex transient auroras

NASA's Juno probe forces 'rethink' on Jupiter




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News






The content herein, unless otherwise known to be public domain, are Copyright 1995-2017 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. All articles labeled "by Staff Writers" include reports supplied to Space Media Network by industry news wires, PR agencies, corporate press officers and the like. Such articles are individually curated and edited by Space Media Network staff on the basis of the report's information value to our industry and professional readership. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement