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space elevators

Posted: Tue Apr 26, 2011 2:35 pm
by Killer Wolf
http://www.boreme.com/posting.php?id=29298

they should use spider webs, be cheaper

Re: space elevators

Posted: Tue Apr 26, 2011 4:35 pm
by JensAyton
Killer Wolf wrote:
they should use spider webs, be cheaper
It’s nowhere near strong enough. Also, if you wanted to complete the cable in, say, five years, you’d need spiders that could produce 80 km of silk per day in completely seamless, continuous strands. :-)

Re: space elevators

Posted: Tue Apr 26, 2011 5:19 pm
by ClymAngus

Re: space elevators

Posted: Tue Apr 26, 2011 8:43 pm
by DaddyHoggy
Ahruman wrote:
Killer Wolf wrote:
they should use spider webs, be cheaper
It’s nowhere near strong enough. Also, if you wanted to complete the cable in, say, five years, you’d need spiders that could produce 80 km of silk per day in completely seamless, continuous strands. :-)
Doesn't meet your criteria, but its a start!

http://www.gizmag.com/spider-silk-produ ... ped/18387/

Re: space elevators

Posted: Wed Apr 27, 2011 6:03 am
by Killer Wolf
i'd say it was strong enough (10x stronger than steel apparently), esp if woven. it's lighter too. and spiders are cheaper than nanotubes.

Re: space elevators

Posted: Wed Apr 27, 2011 6:42 am
by JensAyton
Killer Wolf wrote:
i'd say it was strong enough (10x stronger than steel apparently), esp if woven.
Carbon nanotubes are on the order of 250 times stronger than steel, and the proposed carbon nanotube composite ribbon would still only be able to lift a few tens of tonnes. Spider silk isn’t in the ball game.

Re: space elevators

Posted: Wed Apr 27, 2011 8:14 am
by Commander McLane
Killer Wolf wrote:
i'd say it was strong enough (10x stronger than steel apparently), esp if woven. it's lighter too. and spiders are cheaper than nanotubes.
I thought they said in the videos that the material had to be at least 30 times stronger than steel? That would disqualify the spiders, regardless of being cheaper.

Re: space elevators

Posted: Wed Apr 27, 2011 11:35 am
by Killer Wolf
>:-\

Re: space elevators

Posted: Tue May 03, 2011 7:28 am
by Smivs
Ahruman wrote:
Killer Wolf wrote:
they should use spider webs, be cheaper
It’s nowhere near strong enough.
Depends on the spider. :)