This dronecan stay hidden underwater for months
The submersible quadcopter is designed to launch from an underwater station or vehicle (like a submarine, for example), bobbing to the surface from depths of hundreds of feet. It was built using 3D printing to be lightweight, low-cost, and resistant to water pressure, and its core components are sealed in a waterproof chamber. The drone’s external motors, meanwhile, have been given anti-corrosive coatings to protect them from saltwater, with the drone capable of surviving for up to two months underwater in tests.