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US researchers create robot that jumps

August 13, 2013

PHILADELPHIA (AP) — Researchers in the U.S. have put together a robot that can jump and climb.

That could make it particularly useful for military search missions or supply transport.

The RHex robot project at the University of Pennsylvania began about 15 years ago, when researchers at several universities began asking how robots could be able to traverse rugged terrain as well as animals do.

Legged robots, unlike wheeled ones, have the animal-like ability to overcome obstacles like stairs and ledges. But until the latest RHex, developed by engineering professor Daniel Koditschek and doctoral student Aaron Johnson, legged robots couldn’t negotiate gaps in terrain any better than robots with wheels.

Johnson has developed mechanisms that allow the robot to jump over gaps and holes that it previously would have fallen into. And where tall ledges would typically block a robot’s path, RHex can maneuver onto platforms more than four times its own height.

Koditschek and Johnson designed the latest version of RHex using lightweight carbon fiber. This allows it to perform its leaping and climbing functions without consuming too much power.

The RHex project was originally funded by the Department of Defense division that’s in charge of developing military technology, and the latest version is funded by the U.S. Army.

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