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From New Scientist:
Pumping air through a rubbery robot allows it to walk, but now you can make one jump by setting off explosions inside its body.
George Whitesides from
Harvard University and colleagues have created a three-legged robot
lined with tubes filled with a mixture of methane and oxygen. When an
electrical spark ignites the gases, the combustion reaction generates
bursts of pressure that propel the robot aloft (see video above). "By
actuating all three legs simultaneously, we caused the robot to jump
more than 30 times its height," write the team. As the height of the
jump was limited by the size of the experimental chamber, they think it
could spring twice as high without the attached tubing.
Using explosions allows the robot to move much more rapidly than it
could with locomotion driven by compressed air. The experiments show
that its silicone body can withstand the forces and temperatures
generated by the burning gas.
Read more and see the video here: http://www.newscientist.com/blogs/nstv/2013/02/three-legged-robot-uses-exploding-body-to-jump.html?cmpid=RSS|NSNS|2012-GLOBAL|online-news
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