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

[tomallan]

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 can't think of a way to make the device fix into the tether after its launched.


any ideas would be great.

 

[Drakkith]

I'm having a bit of trouble following you. Your 2nd sentence is a bit confusing.

 

[tomallan]

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 can't think of any way to make device hold up in the air long enough when carrying the payload

 

[Drakkith]

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?

 

[tomallan]

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.

 

[Drakkith]

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?

 

[tomallan]

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.

 

[tomallan]

any update guys?

 

[Drakkith]

How about some sort of rod that locks into place instead of a rope?

 

[tomallan]

its not possible. the required tether is a rope.. any ideas please.. I am very desperate

 

[Drakkith]

its not possible. the required tether is a rope.. any ideas please.. I am very desperate

I'm sorry I don't know the details of your project well enough to really say more.

 

[K^2]

Is the rope fixed? Or can you wind it around a windlass?

 

[berkeman]

its not possible. the required tether is a rope.. any ideas please.. I am very desperate

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...?

 

[tomallan]

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..