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Messages 7781 - 7811 of 9009   Oldest  |  < Older  |  Newer >  |  Newest
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7781
use atmospheric layers as a stairway i'm not a member of a competition-team, but i was thinking about the (thin) ribbon problem - and maybe you'll find some...
violant2006
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Feb 7, 2007
5:21 am
7782
The atmosphere is no more than 100 miles thick, with most of it less than 20 miles. GEO (where the ribbon needs to go) is 22,240 miles. You can only use...
Herbert Murray
hcm1955
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Feb 8, 2007
12:46 pm
7783
http://en.rian.ru/analysis/20061130/56276746.html Cheers, Bert...
Herbert Murray
hcm1955
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Feb 9, 2007
9:37 pm
7784
Viola: Though your idea to use the Space Elevator cable as a pipeline for seawater is interesting, it just doesn't "hold water". The water would be frozen all...
Jolly Roger
rogertheunbe...
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Feb 18, 2007
5:49 pm
7785
I'm curious if there are any thoughts out there about using the technology for the space elevator using it to mine energy from lightning.. Since there is a lot...
stbcho
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Feb 18, 2007
5:49 pm
7786
Hi Bart, i know, but it's exactly the most important part of the ribbon because of the massiv physical-border effects, if we think about the structural-effects...
violant2006
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Feb 18, 2007
5:52 pm
7787
... Ignoring the small problem of freezing, you're pumping against 500,000 kg/cm² (3560 tons/inch²). That'll take a heck of a pump, plus the SE tube has to...
Robert Munck
bobmunck
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Feb 18, 2007
7:01 pm
7788
Ammonia is a popular fluid used for cooling on the Space Station and is probably a better candidate if you want a pumpable fluid. However it seems like it...
musthavemorestuff
musthavemore...
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Feb 20, 2007
9:41 pm
7789
From: http://laughingwolf.net/archives/000160.html First up, there need to be some very serious notifications here of potential conflict of interest. While I...
Herbert Murray
hcm1955
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Feb 27, 2007
11:01 pm
7790
This is a rather lengthy piece, for what it says. Does it say anything other than "you won't get it done if you can't make money with it"? Did I miss a bold...
Andreas
awnd329
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Feb 28, 2007
3:47 am
7791
From: http://laughingwolf.net/archives/000160.html Maybe the reason space companies all use the "field of dreams" business plan is not because the hundreds of...
Andreas
awnd329
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Feb 28, 2007
3:54 am
7792
The best reason for us to go to space is simply long term survival, but oddly that doesn't seem to matter very much to many people. Next to that I see the best...
LogicalDeduction
LogicalDeduc...
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Feb 28, 2007
1:56 pm
7793
Hi JR, thanks a lot for this deep analyse of my little brain-drops. I'll track the discussion until all is fixed and stationary in orbit/geo (; kindest...
Viola Lantera
violant2006
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Feb 28, 2007
3:44 pm
7794
In a message dated 2/28/2007 7:56:32 A.M. Central Standard Time, logicaldeduction@... writes: The best reason for us to go to space is simply long term...
GEddieA95@...
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Feb 28, 2007
4:17 pm
7795
That land isn't going to become desirable until one of two conditions are met. Either a, there is something there that people want, or b, there is something...
Simon Hastings
terenot
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Feb 28, 2007
5:48 pm
7796
Martian wasteland not enough for you? Consider this extreme example for purposes of clarification (not an actual proposal). The first corporation to establish...
Shane Thornburgh
LogicalDeduc...
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Mar 1, 2007
2:51 am
7797
The X-43 has demonstrated that an air breathing scramjet can obtain Mach 10, and probably could be extended to Mach 15. If a scram jet vehicle (SSTO) was also...
Herbert Murray
hcm1955
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Mar 2, 2007
11:41 pm
7798
You've got a 10 thousand mile long fuel line passing through the earth's magnetosphere at Mach 12 building charge all along its length. If the orbiting fuel ...
Ed Minchau
spider_boris
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Mar 3, 2007
1:36 am
7799
The fuel line/cable would have at least one outer conductive shield which will dissipate the charge. At 10,000 mile, one orbit takes between 11 and 12 hours to...
Herbert Murray
hcm1955
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Mar 3, 2007
3:55 am
7800
Besides obvious technological concerns, this would not help with cheap access to space, because you have to have that already to get the fuel to orbit. Taking...
Andreas
awnd329
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Mar 5, 2007
6:55 pm
7801
SPACE GUN The fuel would be shot to orbit with some version of a "space gun", which is doable with today's very near tech, at a much reduced cost per pound....
Herbert Murray
hcm1955
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Mar 5, 2007
10:41 pm
7803
... Also See : http://www.columbiad.ca/industrial/index.html Cheers, Bert...
Herbert Murray
hcm1955
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Mar 5, 2007
11:44 pm
7804
... The orbiting cable is someplace between a LEO SE and a SE attached to the ground. See link and search for "LEO SPACE ELEVATOR" ...
Herbert Murray
hcm1955
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Mar 6, 2007
12:20 am
7805
I'm combining a couple of things in this reply. I thought about this idea some more, and quickly realized that you wouldn't need a 10000 mile long fuel line....
Ed Minchau
spider_boris
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Mar 6, 2007
3:46 pm
7806
... If that is the case 2200 miles instead of 10,000 miles (I will recheck my numbers) then that is good news. ... 22,000 miles to GEO and maybe another 40,000...
Herbert Murray
hcm1955
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Mar 6, 2007
5:27 pm
7807
Seems I was not clear about my main point: Why would we need all this complicated hardware (even if it was workable, which it isn't), if we already have the...
Andreas
awnd329
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Mar 6, 2007
10:59 pm
7808
A super gun would be an option to get stuff to LEO, as long as that stuff can take 5000 to 10000 gees. This stuff could be: water, rocket fuel, powdered food,...
Herbert Murray
hcm1955
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Mar 7, 2007
1:14 am
7809
All that is needed for a space plane to reach orbit is to put a great big external tank on it, and some solid fuel boosters. Much simpler and more doable than...
Andreas
awnd329
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Mar 9, 2007
3:29 am
7810
and it only cost 500 million a launch, and may blow up now and then ... great...
Herbert Murray
hcm1955
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Mar 9, 2007
4:06 am
7811
... My point exactly. Now think of what a mid-air refueling operation at Mach 10 from 1000's of km of fuel pipeline could do. Never mind what it would cost. ...
Andreas
awnd329
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Mar 9, 2007
3:49 pm
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