A robot that can run on the surface of water.
Developing a robot which can run across the surface of water in a fashion similar to the Basiliscus basiliscus and other water-running lizards.
Approach: First, mathematical models of the lizard's interaction with the water are used to develop similar models for robot bodies and legs. A simple four bar mechanism has been adopted as the robot's propulsive mechanism. Proof-of-concept systems and supported prototypes are constructed to confirm and improve the mathematical models. Scale prototypes are constructed, and their lift and forward thrust abilities are measured. Through several iterations, improvements to the system are affected, and the overall system design may diverge (in appearance) from nature.
Benefits: Lizards that run across the surface of the water do not have to deal with the negative effects of viscous drag, like most swimming animals and boats. A robot that moves in a similar manner may be a more efficient way to travel across the water. Also, we wish to increase our understanding and extend the abilities of legged robots.
Current Status: Water running robots with on board and off-board power have been built which are capable of running across open water in outdoor environments. Work is being done to construct control and steering systems for more autonomous, untethered robots. New designs with higher degrees of freedom are being prototyped to allow for steering while water running. Amphibious designs are being researched.
Videos: (newest to oldest) Video 1: High speed video of water runner in small pool - 2007
Video 2: Water runner with off board power in small pool - 2007
Video 3: Water runner with on board power running on open water - 2007
Media Appearances: Discovery Channel Article.
Members: Nitish Thatte, Metin Sitti
Past Members: Steven Floyd, Hyun Soo Park, Terence Keegan, John Palmisano