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Aerospace Light hovercraft powered by electric ducted fans

  1. May 8, 2008 #1
    I'm trying to make a light hovercraft powered by electric ducted fans that will have enough thrust to lift me like 10 feet off the ground. the only problem is I HAVE NO IDEA WHAT I"M DOING. can anyone help me???

    i weigh 134 pounds, and the craft will weigh around 50-80. that puts the weight without the batteries and fans at 184-214 pounds. i know i need more thrust than what the object weighs to get it to float higher, but the fans will weigh a lot also, wont they? so I'm guessing i need more than 250 pounds of thrust. Anyone know how much thrust, voltage, amps, and horsepower i need to float a 214+ pound object 10 feet off the ground?
     
  2. jcsd
  3. May 8, 2008 #2

    Danger

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    Gold Member

    Welcome to PF, Artemis.
    You're not going to get a hovercraft 10' off of the ground no matter what you do. Huge commercial vehicles with turbine engines don't lift that far. The whole point of a hovercraft is to just skim the surface.
     
  4. May 8, 2008 #3
    Hovercrafts only work because they are so close to the ground.
    When you get farther away you switch from a hovercraft to a helicopter -> which requires tremendously more airflow and therefore more power.
     
  5. May 8, 2008 #4
    oh. ok
     
  6. Aug 18, 2008 #5
    Re: help!!!!

    is 45lbs too heawy for the deck of my HC?
     
  7. Aug 18, 2008 #6
    Re: help!!!!

    has anyone ever made a one engine hovercraft here!?
     
  8. Aug 18, 2008 #7

    russ_watters

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    Staff: Mentor

    Re: help!!!!

    We have nowhere near enough information to answer that question - we know nothing about your hovercraft!
     
  9. Aug 18, 2008 #8
    Re: help!!!!

    sorry my dad told me that too, i have a one engine split thrust hc with a yamaha 440 snowmobile and i way about 130lbs
     
  10. Aug 18, 2008 #9
  11. Aug 18, 2008 #10

    russ_watters

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    Staff: Mentor

    Re: help!!!!

    Very cool hybrid craft, but what gets that craft a few feet off the ground isn't the hovercraft mode, it's the ground-effect airplane mode. Danger is absolutely correct: a standard hovercraft is limited to mere inches of altitude, inherrent in the design.

    Btw, moving this to the aerospace forum.
     
  12. Aug 19, 2008 #11
    Re: help!!!!

    mythbusters made hovercrafts from everyday objects, maybe watch that episode
     
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