Search the web
Sign In
New User? Sign Up
space-elevator · Space Elevator
? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Want to share photos of your group with the world? Add a group photo to Flickr.

Best of Y! Groups

   Check them out and nominate your group.
Having problems with message search? Fill out this form to ensure your group is one of the first to be migrated to the new message search system.

Messages

  Messages Help
Advanced
Messages 8235 - 8264 of 8988   Oldest  |  < Older  |  Newer >  |  Newest
Messages: Simplify | Expand   (Group by Topic) Author Sort by Date ^
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
Offline Send Email
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
Offline Send Email
Dec 28, 2007
6:26 pm
8237
... That would be 100kg * 500m / 360 km, or 139 grams. With no safety factor....
Andreas
awnd329
Offline Send Email
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
Offline Send Email
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
Offline Send Email
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
Offline Send Email
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
Offline Send Email
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
Offline Send Email
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 $10^14 on useless...
Andreas
awnd329
Offline Send Email
Feb 6, 2008
9:31 pm
8245
According to http://en.wikipedia.org/wiki/Orbital_ring it would cost 15 billion USD in 1980's . I think the differnence is that materiel to build the rings...
Herbert Murray
hcm1955
Offline Send Email
Feb 8, 2008
12:23 pm
8246
Is WIKIPEDIA the "only place to find out what an orbital ring space orbit would cost? Phxrizn@... **************Biggest Grammy Award surprises of all...
JourneyPS@...
phxrizn
Offline Send Email
Mar 2, 2008
1:14 am
8247
... Well, there seems to be a reference. ... -- -Ian Woollard We live in an imperfectly imperfect world. If we lived in a perfectly imperfect world things...
Ian Woollard
wolfekeeper
Offline Send Email
Mar 2, 2008
2:45 am
8248
No. One should go back to Paul Birche's orginal paper. This can be found at http://www.paulbirch.net/. Refer to "OrbitalRings-II-13" Look in section 6.2...
Herbert Murray
hcm1955
Offline Send Email
Mar 2, 2008
1:41 pm
8249
Myself not having time to read the entire paper page for scanned page, can anyone who has try to answer these questions: - How does he justify the 10 G$ figure...
Andreas
awnd329
Offline Send Email
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
Offline Send Email
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
Offline Send Email
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
Offline Send Email
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
Offline Send Email
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
8255
... No, definitely not. They're referring the strength increase back; but I don't think that that is necessary valid- composites often have different...
Ian Woollard
wolfekeeper
Offline Send Email
Mar 17, 2008
3:53 am
8256
... Yes ... or even if it were just a DVD. I was beginning to be excited for a moment, too, but the words "as high as" jumped out at me, along with the...
csceadraham
Offline Send Email
Mar 20, 2008
6:07 pm
8257
... [snip] ... There are 200 yard Kevlar ropes on sale. <http://www.pelicanrope.com/new03.htm> Google for ropes made out of a. Aramid (Kevlar or Twaron) b....
Andrew Swallow
am4987
Offline Send Email
Mar 21, 2008
3:04 am
8258
... Following this suggestion for Twaron, I'm led through Wikipedia to a good article here: http://www.cranestodaymagazine.com/story.asp?storycode=2047050 It...
csceadraham
Offline Send Email
Mar 22, 2008
5:29 pm
8259
A new article about the elevator wobbling: http://space.newscientist.com/article/dn13552-space-elevators-face-wobble-problem.html...
karikarhi
Offline Send Email
Mar 28, 2008
5:20 pm
8260
The NSS team just finished a very busy weekend, where we demonstrated our prototype climber for BBC Science. A video showing one of the climbs can be seen at: ...
Herbert Murray
hcm1955
Offline Send Email
Apr 10, 2008
4:56 pm
8261
... Congratulations. I found the video to be very intimidating. ;) It makes me feel like a calendar just hit me over the head. Brian Turner Captain KC Space...
blturner3
Offline Send Email
Apr 11, 2008
4:23 pm
8262
Don't get too intimidated, we have a long way to go between now and September. ... Bert...
Herbert Murray
hcm1955
Offline Send Email
Apr 11, 2008
9:49 pm
8263
If Wikipedia is the best you can do, then the basis for discussion is, well... nonsense. Any clown can put almost anything in Wikipedia, any other clown can...
robert owen
craig_holm
Offline Send Email
Apr 14, 2008
12:55 am
8264
... Wikipedia is the only encyclopaedia that is not 10 years out of date. When your best argument is that the source is Wikipedia then you have lost. Andrew...
Andrew Swallow
am4987
Offline Send Email
Apr 19, 2008
11:35 pm
Messages 8235 - 8264 of 8988   Oldest  |  < Older  |  Newer >  |  Newest
Advanced
Add to My Yahoo!      XML What's This?

Copyright © 2009 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines - Help