Scientists are hoping to enlists some bots to explore the approximately 73% of the ocean that remains uncharted. When building for the ocean why not look to the ocean; ocean robots based on rays offer improved stability and maneuverability. This comprehensive review of ray-inspired robots was published in the npj Robotics . Hurdles still limit the size, interestingly its the middle ground, robots between a dinner plate and a coin, where the ray-bots struggle. Via TechXplore:
In the review, the team looked at 47 ray-inspired robots, comparing how they move and navigate. They found there are several kinds of actuators that move the wings. The most common were standard electric motors (servos) that work well for larger robots but can be too heavy or rigid for smaller designs.
Other ray-fin robots use soft-balloon-like pads that inflate with air or water to bend the wings, and some use smart materials that change shape when triggered by an electric signal. There are even microscopic robots powered by living heart cells that contract to create a flapping motion.
Feeling the call of the ocean? Make like (or just make) a baby sea turtle! Crawling Baby Sea Turtle Robot – This project demonstrates how to build a robotic turtle that will respond to light, triggering it to start flapping its flippers and moving, hopefully, toward the freedom of the ocean.
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