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Underwater bots                              13









                                       UNDERWATER  ROBOTICS  IS  AN  EXPANSIVE  FIELD.  MOST
                                       underwater robots are designed for salvage operations or explo-
                                       ration. In the future, underwater robots will help farm the ocean
                                       for fish, pharmaceuticals, minerals, and energy.

                                       Underwater robots may also be used as mock-ups to test space-
                                       faring robots. A neutrally buoyant robot is essentially weightless.
                                       Propellers and motors replace rockets on these underwater robots.  259
                                       The lack of friction encountered in space can only be simulated in
                                       the underwater environment. If you want to design a robot that will
                                       function in space, a good place to start is with an underwater robot.

                                       The National Aeronautics and Space Administration (NASA) has
                                       funded the development of telepresence remotely operated vehi-
                                       cles (TROVs) (see Fig. 13.1) and autonomous underwater vehicles
                                       (AUVs).  The  TROV  tests  virtual-reality  (VR)  based  telerobotic
                                       techniques. Telepresence technologies are increasingly more impor-
                                       tant in exploration and hazardous duty. Telepresence technology
                                       will continue to grow in these fields and expand into others like
                                       entertainment.

                               Dolphins and tunas

                                       Interestingly, studies are being conducted that examine the swim-
                                       ming motion and propulsion of fish. It is common knowledge that
                                       underwater animals move and swim more efficiently than a ship’s
                                       propeller can move a ship. Want to prove this to yourself easily?
                                       Have you ever tapped on the glass of an aquarium filled with fish?
                                       The  sudden  noise  sometimes  causes  the  fish  to  dart  around  so
                                       quickly  your  eyes  can’t  follow  their  movement.  Imagine  if  you
                                                       Team LRN                                  Underwater bots

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