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How do submersible work

  1. Mar 23, 2006 #1
    Help!!:surprised

    what are all the physics priciples behind making and using a manned submersible?
    what are all the factors that needed to be considered and how does the submersible deal with these issues (i have found some articles about submarines but submersibles are different)
    how does it go up and down
    how does it support life while it is underwater
    how long can they last?
    how deeep can they go?

    anyone help would be greatly appreciated
     
  2. jcsd
  3. Mar 23, 2006 #2

    Astronuc

    User Avatar

    Staff: Mentor

    Well, one can google on "Alvin" and "Trieste", or try Wikipedia for starters.

    http://en.wikipedia.org/wiki/DSV_Alvin

    http://en.wikipedia.org/wiki/Bathyscaphe_Trieste

    Deep Sea Submersible's have gone to the deepest part of the ocean, the Marianas Trench ( http://en.wikipedia.org/wiki/Mariana_Trench ), Challenger Deep - http://en.wikipedia.org/wiki/Challenger_Deep.

    See also http://en.wikipedia.org/wiki/Bathyscaphe_Trieste_II

    For more on Alvin - see Woods Hole's Alvin site - http://www.whoi.edu/marops/vehicles/alvin/index.html

    Obviously, the DSV need to be heavier (less bouyant) than the surrounding ocean water. Then to rise, they dump mass (weight) to become more bouyant. To support life, they must withstand high pressure on the outside, while maintaining near atmospheric pressure inside. In addition, they must have sufficient oxygen and heating.

    The sites provide more information.
     
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