Friday, March 16, 2012

Swimming robots

PacX Wave Glider
the robots "swim" without fuel, gather data and
set a world distance record in the process
This story is just kind of neat: http://www.bbc.co.uk/news/technology-17367984
Maybe I like it because they are "distance swimming" robots or that they are gathering data about the quality of ocean water; research I hope can be used to help with the conservation of our waters.  Add to that, the robots are not powered by fuel as you might expect but "swim" by converting energy from the ocean's waves (how do they do that? I'd like to know, it sure could be useful for distance swimming humans ) and they use solar panels to power the data gathering sensors.


Seems like an all around good news record breaking story worth sharing:




Swimming robots break world distance record in Pacific



The drones are taking part in a project to gather data about the composition and quality of sea water.
Built by US-firm Liquid Robotics, the PacX Wave Gliders are expected to cover 9,000 nautical miles (16,668km) by their journey's end.
The first leg of their voyage from San Francisco to Hawaii took four months.
The robots are designed to reach previously inaccessible areas of the ocean and gather data on how acidic the water has become and the shrinking size of fish stocks.
The previous Guinness World Record for the longest distance covered at sea by an unmanned device was 2,500 nautical miles (4,630km).
"I have no doubt new ocean discoveries, insights, and applications will emerge from the PacX data set," said Edward Lu, chief of innovative applications at Liquid Robotics.
No fuel
The gliders were launched from the St Francis Yacht Club at San Francisco harbour on 17 November 2011.
Each robot is composed of two halves: the upper part, shaped like a stunted surfboard, is attached by a cable to a lower part that sports a series of fins and a keel.
To move they do not use fuel but instead convert energy from the ocean's waves, turning it into forward thrust.
Solar panels installed on the upper surface of the gliders power numerous sensors that take readings every 10 minutes to sample salinity, water temperature, weather, fluorescence, and dissolved oxygen.
After a short stopover in Hawaii, the quartet will split.
Two drones will continue to Japan, crossing the Mariana Trench en-route - the deepest place on Earth.
The second pair will swim to Australia, passing the equator.
Researchers expect both "teams" to reach their destinations by late 2012 or early 2013.

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