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June 28, 2018 02:00 AM

DARPA unveils 'shape-shifting' wheel/track design

Autoweek magazine
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    DARPA's RWT shown in track configuration.

    ARLINGTON, Va. — DARPA — the Defense Advanced Research Projects Agency — is reinventing the wheel…with help from a team of engineers from Carnegie Mellon University.

    Known for its share of amazing tech over the years, DARPA's latest development is the Reconfigurable Wheel Track (RWT), a shape-shifting wheel-track mechanism that can transition from a round wheel to a triangular track and back again while the vehicle is on the move.

    The RWT allows a vehicle operator to transform a round wheel into a triangular track for greater traction when the terrain demands it, such as when traveling over snow, ice or serious mud.

    A team from Carnegie Mellon's National Robotics Engineering Center demonstrated the RWT concept recently at DARPA's test facility near Arlington, showing its potential for on-the-fly improvements to tactical mobility and maneuverability on diverse terrains, DARPA said.

     

    The conversion process takes two seconds, DARPA said, as articulated "spokes" within the wheel housing pivot to give the hub a triangular profile, maximizing the percentage of the rubber track that is in contact with the road surface.

    The spokes can then revert back to give the track a round profile, and the hub can change from a stationary position required for tracked travel to a rotating one.

    A video of the RWT in action can be viewed on YouTube.

     

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