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Messages 8181 - 8213 of 9005   Oldest  |  < Older  |  Newer >  |  Newest
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8181
Hi Guys, I've been updating my space elevator talk recently as I have to give it again on Wednesday 12th September to the Association of Falkirk Astronomers...
andynimmo
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Sep 1, 2007
9:15 am
8182
... You wait till they go away and then resume launch. However, you would typically install a space elevator at a place with few clouds, so hopefully it...
Ian Woollard
wolfekeeper
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Sep 1, 2007
3:58 pm
8183
Hi Andy, As far as I know, visible light lasers are not required. Ultraviolet rays will penetrate clouds.(at least to some extent) Infrared will not. Also,...
harvey trevillion
hetrevillion
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Sep 1, 2007
5:27 pm
8184
... Fibre optics can be used for sending power beams, at least over short distances. Clouds tend to stop at a height of about 5,000 metres. So attaching a 6...
Andrew Swallow
am4987
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Sep 1, 2007
9:39 pm
8185
... As I recall Brad Edwards answer to this was that there will be multiple laser located in various locations. Some will be in the desert Southwest for...
blturner3
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Sep 2, 2007
1:08 pm
8187
Now that is a new twist on the Nigerian banking scam. Whomever this person is writes nothing like Andy Nimmo. Ed ... Be smarter than spam. See how smart...
Ed Minchau
spider_boris
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Sep 25, 2007
3:19 pm
8188
Yea, thats pretty well done. Probably spoofing on the gmail address, although it _might_ have been actually cracked. What I don't get is why on earth they must...
Simon Hastings
terenot
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Sep 25, 2007
4:56 pm
8189
... always ... These things come from Nigeria because the spammers live in Nigeria. The Nigerian police, government and ISP leave them alone. I have had a...
Andrew Swallow
am4987
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Sep 26, 2007
5:42 am
8190
Interesting article on a tether experiment. Brings us back to the Russian plans for a series of slinghots to accelerate payloads out of earth orbit. ...
Graham Addis
grahamaddis
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Sep 27, 2007
10:05 pm
8191
WHAT: THE 100 MILE HIGH SPACE TOWER WHERE: ON INTERSTATE 80 IN NEBRASKA WHEN: 10 YEARS COST: 1 TRILLION DOLLARS FUNDING: A 1 TRILLION DOLLAR STOCK IPO SALE...
Barry
bseegebarth
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Sep 28, 2007
2:44 pm
8192
1. Warren Buffett doesn't have a trillion dollars, and even if he did, he generally prefers profitable enterprises. 2. You would have to sell 1 billion dollars...
Kerry
kerry_lien
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Sep 29, 2007
3:03 am
8193
This is very similar to the Space Fountain tower I proposed (on this group) several months ago to be built near the Oklahoma Spaceport. My idea would have...
Jolly Roger
rogertheunbe...
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Sep 29, 2007
1:46 pm
8194
... I'm amazed by how many people get hung up on the travel time to orbit. As Monte Davis wrote - The initial elevator will be for cargo -and - humans make up...
Vern McGeorge
vernmcgeorge
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Oct 4, 2007
5:34 am
8195
The first generation space elevator needs to be thought about as a system to move stuff into space for 1 % of what it now costs. it is not about travel time it...
Herbert Murray
hcm1955
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Oct 4, 2007
10:40 pm
8197
... http://www.sandia.gov/media/NewsRel/NR2001/flyer.htm ... a ... this...
Herbert Murray
hcm1955
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Oct 4, 2007
11:01 pm
8198
... transport ... Just to set the record straight, I did not write the above excerpt and mostly agree with Vern. ... Right. These people must have been quite...
Andreas
awnd329
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Oct 5, 2007
3:57 am
8199
Here is a link to an article claiming a breakthrough in bonding nanotubes to a plastic like material. http://www.physorg.com/news110727530.html Looks...
spacelifejunkie
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Oct 5, 2007
2:39 pm
8201
... BTW Space Elevator is mentioned on page 35 of the report...
Herbert Murray
hcm1955
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Oct 11, 2007
1:35 am
8202
It seems unlikely to me that DOD would finance anything unless it is maneuverable enough to avoid satellite killer missiles. [Non-text portions of this message...
roger curnow
rogertheunbe...
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Oct 11, 2007
10:34 pm
8203
DOD is more likly to put up an anti missle system to protect SPS systems. It was a divison of DOD the organized the study and is making positive sounds in...
Herbert Murray
hcm1955
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Oct 12, 2007
8:45 am
8204
Here are two problems with the Edwards Space Elevator that no one on this group or anyone else in the SE community seems to be talking about. 1.DURABILITY....
Barry
bseegebarth
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Oct 14, 2007
6:17 pm
8205
With some more research and development, this could be the right pathway to our needed SE ribbon. Looks enticing. Harvey spacelifejunkie...
harvey trevillion
hetrevillion
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Oct 14, 2007
6:17 pm
8206
On the issue of durability - many designs currently call for climbers which build up the tether bit by bit as they climb it. Similarly "repair" climbers could ...
Simon Hastings
terenot
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Oct 14, 2007
6:28 pm
8207
... Quite possibly because it is fairly well covered in his book. A wide, flat ribbon is resistant to appreciable damage from micrometeorites. Having a base...
Jo Jaquinta
jim_plummer
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Oct 14, 2007
10:53 pm
8208
... Section 10.2 of Edwards report in the link section of this group (found at: http://www.spaceelevator.com/docs/472Edwards.pdf) explains how the baseline...
Herbert Murray
hcm1955
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Oct 15, 2007
12:55 am
8209
Yes this is a positive development. Edwards baseline design is 60% CNTS with the balance as some type of substrate. The polymer matrix referenced in the...
Herbert Murray
hcm1955
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Oct 15, 2007
1:07 am
8210
The inflatable space tower idea is nothing new. There are several designs being proposed in the scientific community. Most notable is the one being floated...
Barry
bseegebarth
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Oct 15, 2007
8:40 am
8211
The inflatable tower would have to have considerably more pressure in its walls than one atmosphere at the bottom of the tower, or else it would collapse. If ...
Ed Minchau
spider_boris
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Oct 15, 2007
12:06 pm
8212
Barry, As a structural engineer I have to agree with Ed's assessment. If you draw a free body diagram just below the pulley attachment and actually calculate...
Paul Wolfenbarger
phred4269
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Oct 16, 2007
12:38 pm
8213
Here are your calculations Ed. The material I would suggest using would be readily available graphite epoxy, like that used for aircraft with a weight of...
Barry
bseegebarth
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Oct 17, 2007
7:31 am
Messages 8181 - 8213 of 9005   Oldest  |  < Older  |  Newer >  |  Newest
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