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Messages 8225 - 8254 of 9018   Oldest  |  < Older  |  Newer >  |  Newest
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8225
... Nice idea, but it would need lots of work in making sure everything's balanced. Graham...
Graham Addis
grahamaddis
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Nov 2, 2007
12:22 pm
8226
... Balancing the sling will be a walk in the park once you've balanced that 100 mile tower... Seriously, all it takes is a counterweight. The tower will have...
Andreas
awnd329
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Nov 2, 2007
6:31 pm
8227
there are many different thins that cant be over come on of them is centrificle force which will be another huge factor. You know the earth wont stop spinning...
weresirhc
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Nov 4, 2007
5:10 pm
8228
... You are correct in that the amount of tension on the cable of a space elevator is the biggest engineering concern. People have jokingly called such a...
Jo Jaquinta
jim_plummer
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Nov 4, 2007
6:01 pm
8229
... Add to that the difficulty of making perfect nanotubes. There was a paper out a while back that pointed out that the expected defects in nanotubes would...
Ed Minchau
spider_boris
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Nov 4, 2007
6:34 pm
8230
... That's an interesting idea. Your standard "4 in 1" chainmail as used for armor is designed to spread force laterally across it's surface rather than to...
Jo Jaquinta
jim_plummer
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Nov 4, 2007
9:01 pm
8231
I assume someone has already responded to this, but I want to anyway. The space-elevator isn't hurt by centripetal force, it wouldn't work without it. On a...
Simon Hastings
terenot
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Nov 5, 2007
5:16 am
8232
It is very likely that the sharp bending at the "links" of any chain mail or knitting will do as much or greater damage to strength than the defects we are...
Andreas
awnd329
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Nov 5, 2007
4:04 pm
8233
... rope. ... Ropes break so ensure at least 3 separate strands are used. That way if one breaks the other two (or more) strands can take the weight. Andrew...
Andrew Swallow
am4987
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Nov 5, 2007
7:12 pm
8234
From Wikipedia, the free encyclopedia (Redirected from Centrifugal) Jump to: navigation, search Centrifugal force (from Latin centrum "centre" and fugere...
Hank Stone
birdarise
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Nov 10, 2007
9:59 pm
8235
http://www.space.com/missionlaunches/071212-tw-space-tether.html "On Sept. 25, hundreds of students worldwide watched remotely as a Russian-built Foton-M3...
Graham Addis
grahamaddis
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Dec 14, 2007
12:58 pm
8236
I see by table 1 in http://www.niac.usra.edu/files/studies/final_report/1032Pearson.pdf that as of three years ago, filament materials were available that...
csceadraham
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Dec 28, 2007
6:26 pm
8237
... That would be 100kg * 500m / 360 km, or 139 grams. With no safety factor....
Andreas
awnd329
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Jan 14, 2008
9:44 pm
8238
... Andreas's posting does not say, but is consistent with, two things. One, the tensile-strength-to-density ratio that is available in filaments is also...
csceadraham
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Jan 17, 2008
9:01 pm
8239
Based on the wikipedia article an orbital ring space elevator would cost 15 Billion in 1980 USD. In today dollars that would be something like 40 to 50 billion...
Herbert Murray
hcm1955
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Feb 4, 2008
3:52 am
8240
In a message dated 2/3/2008 9:53:13 P.M. Central Standard Time, hcm1955@... writes: "orbital ring space elevator would cost 15 Billion in 1980 USD. In...
GEddieA95@...
Send Email
Feb 4, 2008
4:08 am
8241
... I think that the orbital ring would be really rather susceptible to micrometeorites and other space debris due to its large size. The launch loop, because...
Ian Woollard
wolfekeeper
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Feb 4, 2008
3:51 pm
8242
... Let's not start a debate here about that. I believe oil will keep flowing regardless of any Western military in Mesopotamia. Regards, Dan ...
Dan Ust
dan_ust
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Feb 4, 2008
8:28 pm
8243
Based on IslandOne ( http://www.islandone.org/LEOBiblio/SPBI127.HTM ), the orbital ring weighs 10^8 tons, which at a generous $1000 per kg would cost $10^14 to...
Andreas
awnd329
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Feb 6, 2008
9:24 pm
8244
Ooops, it just came to me that based on the record of the previous two, a thousand Bush administrations could conceivably waste just about $10^14 on useless...
Andreas
awnd329
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Feb 6, 2008
9:31 pm
8245
According to http://en.wikipedia.org/wiki/Orbital_ring it would cost 15 billion USD in 1980's . I think the differnence is that materiel to build the rings...
Herbert Murray
hcm1955
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Feb 8, 2008
12:23 pm
8246
Is WIKIPEDIA the "only place to find out what an orbital ring space orbit would cost? Phxrizn@... **************Biggest Grammy Award surprises of all...
JourneyPS@...
phxrizn
Offline Send Email
Mar 2, 2008
1:14 am
8247
... Well, there seems to be a reference. ... -- -Ian Woollard We live in an imperfectly imperfect world. If we lived in a perfectly imperfect world things...
Ian Woollard
wolfekeeper
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Mar 2, 2008
2:45 am
8248
No. One should go back to Paul Birche's orginal paper. This can be found at http://www.paulbirch.net/. Refer to "OrbitalRings-II-13" Look in section 6.2...
Herbert Murray
hcm1955
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Mar 2, 2008
1:41 pm
8249
Myself not having time to read the entire paper page for scanned page, can anyone who has try to answer these questions: - How does he justify the 10 G$ figure...
Andreas
awnd329
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Mar 3, 2008
10:58 pm
8250
Hey whats with all the ideas of impossibility?! how about some ideas that would help make this thing possible to make. Lets start giveing ideas that will help...
weresirhc
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Mar 4, 2008
3:38 pm
8251
When ideas are abundant and resources to act on them scarce, rejecting bad ideas can be more productive than creating new ones. Andreas...
Andreas
awnd329
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Mar 4, 2008
7:58 pm
8252
From: http://www.iop.org/EJ/abstract/0957-4484/18/45/455709/ "Abstract. This paper reports on oriented poly(vinyl alcohol)/single- walled carbon nanotube...
Herbert Murray
hcm1955
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Mar 16, 2008
4:20 pm
8253
So, really this says they managed to increase the strength of PVA to about 880 MPa; which isn't *that* exciting. And it sounds a bit fishy, why didn't they try...
Ian Woollard
wolfekeeper
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Mar 16, 2008
5:00 pm
8254
I misunderstood, then the tape will not a take a load of 88Gpa? Bert ... alcohol)/single- ... mild ... as a ... cast ... drawing. ... of the ... strength of ...
Herbert Murray
hcm1955
Offline Send Email
Mar 17, 2008
3:09 am
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