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  • On EXPO21XX.com you will find many research projects evolving around water robots research. Some examples can be seen below. Click on "more info" to see the whole online stand of the university or the company.


     
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  • Water robotícs highlights

  • Picture by University of Bremen
    • Underwatersnake V3
      @ University of Bremen

    • The aim of the project is the development of a next-generation underwater snake, focussing on construction, production, and test of the propulsion components of the robot's spinal column. Above all, the underwater snake is a swimming system, i.e., during operation, the robot remains close to the surface while, if required, it may dive up to a depth of 3 m. As compared to customary water propellers, the turbulence of the system is significantly reduced due to an undulation propulsion. Thus it is possible to use this robot in bodies of water with strong plant growth or near sensitive devices or edifices.
    • µAUV
      @ University of Bremen

    • Exploration of the world's oceans and the ocean floor has barely scratched the surface. One explanation for this are the harsh conditions encountered by scientific instruments when deployed into the depths of the sea. The extreme pressures, the total darkness, the need to communicate via broad band (possible only over cable), and the high logistical costs all complicate the deep-sea use of technical systems.
    • Robotic fish
      @ University of Essex

    • In nature, fish has astonishing swimming ability after thousands years evolution. It is well known that the tuna swims with high speed and high efficiency, the pike accelerates in a flash and the eel could swim skilfully into a narrow hole. Such astonishing swimming ability inspires us to improve the performance of aquatic man-made robotic systems, namely Robotic Fish. Instead of the conventional rotary propeller used in ship or underwater vehicles, the undulation movement provides the main energy of a robotic fish. The observation on a real fish shows that this kind of propulsion is more noiseless, effective, and manoeuvrable than the propeller-based propulsion. ...
    • Autonomous Underwater Vehicles (AUVs) a.k.a. Gliders
      @ Rutgers University

    • The Slocum Coastal Electric Glider (Webb Research Company, Falmouth, MA, Figure 1) is an autonomous underwater vehicle that converts changes in vehicle buoyancy to vertical motion. A pair of fixed wings provides forward momentum to move horizontally through the ocean. While the majority of the glider is reserved for glider mechanics, battery storage and communication equipment, a section is devoted exclusively to scientific payload. A suite of miniaturized physical and bio-optical instruments, which measure in situ water properties including temperature, salinity, and the absorption and scattering of light in the water column, have been and are currently under development for placement in the glider’s science payload bay
    • SAUVIM
      @ University of Hawaii at Manoa
       

    • ISAUVIM is built around an open-framed structure enclosed by a flooded composite fairing. With six aluminium pressure vessels for housing the electronics, it has been studied in order to facilitate high-depth upgrades.

      Its movement is controlled by eight thrusters located around the center of mass. The four vertical move the vehicle in the Z-axis (heave); the two, internally mounted, horizontal thrusters move the vehicle in the Y-axis (sway); and the two, externally-mounted, horizontal thrusters move the vehicle in the X-axis (surge).

      The lower frame houses only the NI-MH battery pack, while the upper frame hosts all the essential electronics, visual hardware, navigation and mission sensors in six cylindrical pressure vessels.
    • Fish Robot
      @ King Mongkut's University of Technology

    • Currently, the phenomenon of fluid flow for fish and aquatic animals swimming is unknown. Fish and aquatic mammals propel themselves differently from human. Understanding their propulsion systems could provide us a new technology.

      This research, Institute of Field Robot (FIBO) uses the yellow-fin prototype tuna to build the robot because of its movement ability at high speed for longer period, tuna-form mode, which make us believe that its movement will be the most efficient locomotion mode than other aquatic mammals. Additionally, the body profile is both symmetrical in horizontal and vertical plane, which is helpful for finding out the equation of motion.