Roboticists designed an untethered bot that can detect obstacles in the subterranean when swimming through sand and can effectively engage in search and rescue missions.
The researchers say that the robot can further travel at a speed of 1.2 millimeters per second - roughly 13 feet per hour. It may seem slow, but it is relatively fast when compared to other subterranean animals like worms and clams.The innovation draws inspiration from the features of baby turtles.
Shivam Chopra, lead study author said, “We needed to build a robot that is both strong and streamlined.” “Turtle-like flippers can generate large propulsive forces; allow the robot to steer; and have the potential to detect obstacles,” they said, “the bot detects obstacles by monitoring changes in the torque generated by the movement of its flippers. It can detect obstacles above its body, but not below or directly in front of it.”Researchers devised two foil-like surfaces which they refer to as terrafoils, to maintain the robot at a consistent depth in the sand.
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