Spray: First Underwater Autonomous Vehicle To Cross Gulf Stream

A small self-propelled ocean glider named Spray is the first underwater autonomous vehicle (UAV) to cross the Gulf Stream underwater.


(From Spray Autonomous Underwater Vehicle)

The six-foot-long glider was launched from a point about 100 miles south of Nantucket Island, Mass. on September 11 of this year. It traveled slowly at an average speed of about 12 miles per day and was recovered last week just north of Bermuda. It has no outside moving parts - at all. It moves forward by using battery-powered hydraulic pumps to vary its air volume by a few hundred cubic centimeters (using oil-filled bladders); this generates the buoyancy changes that power its forward gliding (see path diagram below).


(From Spray Autonomous Underwater Vehicle)

The batteries also power on-board instruments to measure temperature, salinity, pressure and the turbidity of the water (a measure that relates to biological productivity). Spray records its surface position at each point; it rolls 90 degrees to allow the GPS antenna embedded in the right wingtip to gather that data. Every seven hours it spends fifteen minutes on the surface to send data back to scientists Breck Owens from Woods Hole Oceanographic Institution, and Russ Davis and Jeff Sherman of Scripps Institution of Oceanography at the University of California, San Diego, using the satellite phone in its left wing.


(From Spray Autonomous Underwater Vehicle)

Spray is capable of maintaining its course autonomously, but operators on shore can send new commands to change course or alter the data gathering parameters at any time. "The key," said Davis, "is that Spray can stay at sea for months at relatively low cost, allowing us to observe large-scale changes under the ocean surface that might otherwise go unobserved."

Spray has a potential range of up to 3,500 miles - it could someday cross the Atlantic Ocean or explore other ocean basins. "We envision having fleets of gliders in operation in a few years," Owens said. "It could change the very nature of the kinds of questions we can ask about how the ocean works."

Future missions planned for 2005 include a round trip from Woods Hole, Mass to Bermuda; an Acoustic Doppler current Profiler will be used to give vertical profiles of current speed and velocity. Other sensors could be added to measure dissolved oxygen, carbon dioxide, alkalinity and nutrients in the ocean water.

"Oceanographic gliders are now at the stage similar to the start of aviation," Sherman said. Today's autonomous buoyancy-driven vehicles owe their existence to a visionary article published in 1989 by Henry Stommel.

Technovelgy readers may recall a recent story about the Subjugator underwater robot, a student-built competitive robot that resembled the Flying Sub from the popular 1960's science fiction show Voyage to the Bottom of the Sea. Read more about spray at Spray Autonomous Underwater Vehicle and Spray home page.

Scroll down for more stories in the same category. (Story submitted 11/6/2004)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 3 )

Related News Stories - (" Robotics ")

Bee+ Robobee Now With Four Wings
'It was a tiny thing, scarcely more than an inch and a half in length...' - Raymond Z. Gallun, 1936.

Jeff Bezos Tries Waldoes (Robotic Hands)
'Waldo put his arms into the primary pair before him...' - Robert Heinlein, 1942.

Tesla Diagnoses Itself, Sends Part Request
'Tentacles emerged from the side of the machine and felt puzzledly at the damaged area.'

Tesla Robotaxis Will Automatically Recharge Themselves
'Then it appeared to make up its mind, and trundled over to a wall socket...'- Stephen Barr, 1960.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Miners! NASA Wants To License RASSOR Excavator
'The borers had been dismantled and packed away.'

Bee+ Robobee Now With Four Wings
'It was a tiny thing, scarcely more than an inch and a half in length...'

CNSILK Robotic Spider Builder
'We could certainly spin a web right through the Solar System, if we can think of a good use for one.'

Starshade Will Help Space Telescope To Search For Exoplanets
'When it found planetary systems in its field, automatically shifted upon them a higher powered telespectroscope ...'

Tiny LEDs Developed For Dust-Sized Computers
'They use sparkles to talk to each other...'

Is There Extraterrestrial Life Here In The Solar System
'How fast is it moving? ...one meter per minute.'

Can We Comprehend Deep Learning Systems?
'Youíve nothing remotely like it, so I canít describe it to you.'

Skin Electronics Can Show Electrocardiogram
'... the young men in the streets who applied polyimde OLED body film to their bared shoulders.'

Chinese Fern Helps Remediate Arsenic Soil
'Bioengeering had put out a spec report on the long crawly things five months back.'

Skai Air Taxi Costs The Same As Uber
'The air-taxi found its way past and around other ground-cars...'

Neurodevices For Consumers? Neuroethicists (And Philip K Dick) Say 'Caveat Emptor'
'They tried to use it today and it wouldn't work. No colors and no ceph patterns, neither one...'

NASA 3D Printed Habitat Challenge Won By AI SpaceFactory
3D printing - on Mars!

The Future Of Elon Musk's Neuralink
'Cerebral Electromagnetic Emmission Amplification and Relay System ó call it artificial telepathy, if you like.'

Researchers Make You Say Anything in Videos
'[It] caused his televised image... to mouth the vowels and consonants beautifully.'

Jeff Bezos Tries Waldoes (Robotic Hands)
'Waldo put his arms into the primary pair before him...'

Asimov and Musk - Boring Company Tunnel vs. Street Race
'There was almost no sound, just a steady velvety whirr as the taxi sped along.'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.