It is relatively straightforward to make a fast or slow moving underwater drone. Having precise speed control may take a fishy solution. Via TechXplore:
When designing swimming robots, a question that keeps coming up for researchers is how stiff the piece that propels the robots through the water should be made. It’s a hard question, because the same stiffness that works well in some situations can fail miserably in others.
“Having one tail stiffness is like having one gear ratio on a bike,” said Quinn, who holds joint appointments in mechanical and aerospace engineering and electrical and computer engineering. “You’d only be efficient at one speed. It would be like biking through San Francisco with a fixed-gear bike; you’d be exhausted after just a few blocks.”
Welcome to drone day on the Adafruit blog. Every Monday we deliver the latest news, products and more from the Unmanned Aerial Vehicles (UAV), quadcopter and drone communities. Drones can be used for video & photography (dronies), civil applications, policing, farming, firefighting, military and non-military security work, such as surveillance of pipelines. Previous posts can be found via the #drone tag and our drone / UAV categories.
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