This video is a demonstration of two robots, the 160g Tailbot (a 4 wheeled robot) and the 8.1kg XRL (a RHex hexapedal robot), using their inertial tails to perform aerial self righting behaviours.
What a difference a tail makes. Robots with tails can fly through the air while maintaining their orientation, evidence that appendages for robots can enhance performance and effectiveness.
Past research from UC Berkeley explored what happens when you give a wheeled robot a controllable tail, as that used by the lizard.
Now an extremely adept X-RHex Lite, or XRL for short, robot shows it can stay upright no matter how challenging the attempt is to make it do otherwise.
The XRL is the result of a collaboration between UC Berkeley and the University of Pennsylvania.
The robot is based on RHex, UPenn's original hexapod robot, but the most distinguishing features of the newer version are that it is more modular, and it has an actuated tail. The common challenge has been getting mobile robots to land and stay on their feet.
This work was presented at CLAWAR 2012, and the paper can be found here: http://kodlab.seas.upenn.edu/
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