Inspired by nature, scientists have created a krill-inspired robot that could be helpful for oceanic navigation and search and rescue missions.
We know very little about deep ocean life and its many secrets. Ocean navigation systems are needed to collect data for surveys or research, search and rescue missions, or explore the rich alien life there.
The team, led by Sara Oliveira Santos, a Ph.D. candidate at Brown's School of Engineering, studied krills extensively to build Pleobot, which can emulate the krill's movements.Krill are exceptional aquatic athletes that excel in swimming, braking, turning, and accelerating. The swimming technique, called, involves the coordinated movement of multiple appendages or legs sequentially, creating a wave-like motion that propels the organism forward.
It primarily consists of 3D printable parts with active and passive actuation of the joints to create natural kinematics. They utilized force and fluid flow measurements and biological data to establish the relationship between the flow around the appendage and thrust. "We were able to uncover that mechanism by using the robot. We identified an important effect of a low-pressure region at the back side of the swimming legs that contributes to the lift force enhancement during the power stroke of the moving legs," said Yunxing Su, a postdoctoral associate in the lab and co-author of the study, in the press release.
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