Boat Moves Without an Engine Or Sails w/video
Posted by keelynet on January 25, 2009
Slow but interesting propulsion method…
“Researchers say technology they have developed would let boats or small aquatic robots glide through the water without the need for an engine, sails or paddles. A University of Pittsburgh research team has designed a propulsion system that uses the natural surface tension that is present on the water’s surface and an electric pulse to move the boat or robot, researchers said. The Pitt system has no moving parts and the low-energy electrode that emits the pulse could be powered by batteries, radio waves, or solar power, researchers said in a statement.” / One of the system’s primary applications could be as a cheap, environment-friendly robot that could traverse the world’s oceans, gathering research data, Cho said. Pitt researchers said that in their experiments, an electrode attached to a 2-centimeter-long “mini-boat” emitted a surge that changed the rear surface tension direction and propelled the boat at roughly 4 millimeters per second. A second electrode attached to the boat’s front side served as the rudder. The Pitt system is similar to the MIT developed robot known as a Robostrider.” – Source
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