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Air pressure lift

  1. Jun 24, 2017 #1
    How much air pressure, from six 1inch in diameter pipes, would it take to lift something no more then 250 pounds about six to twelve inches off the ground?


    P.S. This is a personal question not, homework.
     
  2. jcsd
  3. Jun 24, 2017 #2

    Drakkith

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    Staff: Mentor

    What is your goal? What are you building?
     
  4. Jun 24, 2017 #3
    I want to build a small platform that will carry small work loads such as wood or metal. (Farm purpose)
     
  5. Jun 24, 2017 #4

    JBA

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    By 1" pipes do you mean 1" inside diameter cylinders with pistons?
     
  6. Jun 24, 2017 #5

    berkeman

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  7. Jun 24, 2017 #6
    My thought was to use something like copper or aluminum pipes/tubing. I just need something simple that can easily be fixed or replaced. What kind of moter could i use to get 240 psi, with it the moter only weighing no more then thirty to forty pounds?
     
    Last edited: Jun 24, 2017
  8. Jun 24, 2017 #7

    fresh_42

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    I guess this is heavily depending on details of design. A Google search "hovercraft technical specifications" brought me a lot to read. Wikipedia has a nice picture of the principle behind. I was surprised, that the pipes don't press the air directly on the ground, but on a bottom plate instead.
    It will probably be determined by the rubber aprons to contain the air. And stability might get a problem.
     
  9. Jun 24, 2017 #8
    Well what i thought of for design was to use nozzles to get a more forceful push of air from the exit points. Would i loss or gain psi from nozzles?
     
  10. Jun 24, 2017 #9

    berkeman

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  11. Jun 24, 2017 #10
  12. Jun 24, 2017 #11

    berkeman

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    If you Google DIY Hovercraft Wheelbarrow, you will see lots of ideas. You could have wheels outside the skirt that the unit settles down on when the motor isn't running.

    http://www.vintageprojects.com/go-kart/flying2-150.jpg
    flying2-150.jpg
     
  13. Jun 24, 2017 #12

    jack action

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    A hovercraft (with skirt) usually don't have a pressure over 0.5 psi. The higher the pressure, the bigger the leakage, the higher the power needed.

    This post might help.
     
  14. Jun 24, 2017 #13
    Well for the project im working on i need it to get at least 200 pounds six or eight inches off of flat ground, so what kind of moter would be best for a skirted craft? (Craft is 4 foot long, 3 foot wide.)
     
  15. Jun 24, 2017 #14

    russ_watters

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    Here's a hovercraft calculator:
    http://www.hoverhawk.com/lcalc.html

    I think you will find that your requirements are substantial -- more than you are probably expecting.
     
  16. Jun 24, 2017 #15
    Thanks
     
  17. Jun 25, 2017 #16

    JBA

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    One major issue is to keep in mind is that a hovercraft is a frictionless vehicle that must be restrained at all times when at lift. The slightest ground slope and/or wind can quickly accelerate an unrestrained hovercraft into a dangerous uncontrolled projectile (particularly one with a heavy load).
     
  18. Jun 25, 2017 #17
    Thanks for the help everyone.
     
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