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astromark
2004-Nov-23, 02:37 AM
:huh: Please explain;This Idea of a space lift to me. Wouldent a tower or ribon suffer from extrem forces as our atmospher is moving about a tad. what about electrical static and...and... Ummm... It cant be that simple, can it?

antoniseb
2004-Nov-23, 02:57 AM
Originally posted by astromark@Nov 23 2004, 02:37 AM
It cant be that simple, can it?
It is not that simple. There are many obstacles to overcome, including the ones you have just mentioned, if it will ever work. There are several threads in the forum with 'space elevator' in the title. These are mostly about this idea.

Peresonally, I think we will get it to work, but it will take several decades, and some amazing advances in materials and nanotechnology.

gavwvin
2004-Nov-23, 09:50 AM
http://www.liftport.com/faq.php#science1a

Have a look at these FAQ's... I'm still skeptical but it's interesting!

astromark
2004-Nov-23, 12:15 PM
:blink: thanks for the link, yes to being a sceptic. Having just read the link sites question and answers.. Im not going to be lining up to test this 'Lift'.
:D cluck. cluck. cluck. :unsure:

WHITE_HOLE
2004-Nov-23, 01:37 PM
What the heck is this 'Ribbon' lift port thingy?
:ph34r:

John L
2004-Nov-23, 07:53 PM
The ribbon is a description of the design of the space elevator cable. The cable itself under some of the current design plans will be a thin (a few milimeters) ribbon of a carbon nano-tube/epoxy composite material with a width of about a meter. Basically it will be a carbon ribbon anchored at the equator on an ocean platform (like an oil platform or the SeaLaunch ships) with the opposite end out beyond geosynchronous Earth orbit. A weight at the end (the farther from GEO the lighter the weight needs to be) balances the center of gravity of the entire system at GEO so that the whole thing remains above the same point on the Earth. The idea about using a SeaLaunch type ship would be for moving the elevator in the event that a satelite or debris is known to be on a collision course.

The whole thing is very well thought out. The keys to overcome are developing a reliable method of producing uniform, long carbon-nano tubes, determining what epoxy composite system would be light and strong enough to handle the stress, whether the material can survive the corosive nature of atomic oxygen in the upper atmosphere, and the best method to power the lifters that will ride the ribbon up and down so that the entire trip doesn't take weeks. From the surface of the Earth to the extreme end of the ribbon, if no counter weight was used, could be 100,000 kilometers. If the lifter could climb the ribbon at 100 km/h that would take nearly 42 days to reach the extreme end of a 100,000 km ribbon.