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Think of a device that can transfer a payload to a tether!

  1. Mar 7, 2012 #1
    hello there... thanks for viewing my post.

    i need to think of a mechanical device that can transfer a payload to a through a tether and this device should lift up the payload and to a fixed place about 150 cm above the ground...

    well i am thinking about a spring attached to the device and when the payload drops onto the device and then it will be like a catapult and launch into the fixed place.. but the problem is i cant think of a way to make the device fix into the tether after its launched.


    any ideas would be great.
     
  2. jcsd
  3. Mar 7, 2012 #2

    Drakkith

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    Staff: Mentor

    I'm having a bit of trouble following you. Your 2nd sentence is a bit confusing.
     
  4. Mar 7, 2012 #3
    ok.. sorry for the confusing sentence... this is my idea.. after the spring launch, device will fling up with the rope as a guide (rope is in middle of device). i cant think of any way to make device hold up in the air long enough when carrying the payload
     

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  5. Mar 7, 2012 #4

    Drakkith

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    You're wanting to launch a device with a payload into the air along with a guide rope? Is that correct?
    What exactly will happen to the payload?
     
  6. Mar 8, 2012 #5
    yes you are right. the device will be launched into the air. the payload should be fixed with the device... thank you for any help.
     
  7. Mar 8, 2012 #6

    Drakkith

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    And you want to know how to attach the device/payload to the guide rope? Or how to keep it in the air for a while?
     
  8. Mar 8, 2012 #7
    both of them. I want to know a mechanism possible than can make use of the rope to lift the device upwards and after reaching the top, be there for a while.
     
  9. Mar 23, 2012 #8
    any update guys?
     
  10. Mar 23, 2012 #9

    Drakkith

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    How about some sort of rod that locks into place instead of a rope?
     
  11. Apr 3, 2012 #10
    its not possible. the required tether is a rope.. any ideas please.. im very desperate
     
  12. Apr 3, 2012 #11

    Drakkith

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    I'm sorry I don't know the details of your project well enough to really say more.
     
  13. Apr 3, 2012 #12

    K^2

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    Is the rope fixed? Or can you wind it around a windlass?
     
  14. Apr 3, 2012 #13

    berkeman

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    I have a very simple idea that should work well. It's your school project, though, so the PF rules say that I cannot just tell you how to do it.

    Here's a hint -- how does a ratchet work? What is its function, and how does it accomplish this function? What variations on a ratched might work well in this application of yours with the rope...?
     
  15. Apr 9, 2012 #14
    the ratchet method is not allowed. the mechanical device should be autonomus. Its like when i drop a payload onto it, it should automatically do the mechanical function. I was thinking about using pressurised air..
     
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