So is this really a concern: http://www.newscientist.com/article/dn16223-space-elevator-trips-could-be-agonisingly-slow.html "In this study, the space elevator...
An approach around this is a design where the cable is made up of segments supported by orbital rings. The advantages of Orbital Ring design are: - Can be...
I'll admit that I haven't read any serious technical papers on the dynamics of the SE, but it seems to me that the SE is already hauling the counterweight...
... No, no. The counterweight at most does that to start with then gains momentum during construction. Once it has gained momentum it hangs straight out unless...
Below of the NSS analysis of the report of the MIT report. The report can be found at: http://web.mit.edu/mitsps/MITFutureofHumanSpaceflight.pdf If you read...
When I was boy I would use fishing string for kites to see how high I could fly them. Times I couldn't hang on it. The kite would pull me off the ground or the...
Hey Curtis! and everyone else Happy New Year! (Stop right here if you are not in the mood for a long science lecture!) I thought you might like this...
Dear all: Happy New Year. This is the first time I post message, though I have been on this list for quite a while. I have strong research backgroud and...
... Very interesting. Would the elevator speed depend on the vibration frequency? What kind of frequencies would be needed for, say, 200 km/h speeds? Would...
... The brush bristles can be replaced by ratchets. The ribbon would have to be made from at least 3 interwoven threads to give the ratchet something to grip....
Cute proposal, but I just don't see it working. Would vibrations on the ground get any higher than a few hundred meters? Wouldn't they be dampened by the...
I remember reading an article in the Journal of British Inter-planetary Science (JBIS) that discussed several different methods on how to stop a space tether...
... [snip]> ... To go downwards just turn the racket upside down. You will also need a brake to slow down. ... the ... You would need two ribbons - one to go...
I agree, high frequency vibrations would dissipate way too fast. Also, the standing wave nodes would be a problem. The one way out is to use the lowest mode....
I have been looking at the toy helicopter the wright brothers played with as kids. I am suprised that no one has thought of using aerodynamic lift to aid the...
... with as kids. I am suprised that no one has thought of using aerodynamic lift to aid the climber until it is out of the atmosphere. One example being...
All proposals of lift inside the atmosphere suffer the same problem: The benefit is minuscule. Even granting the first miles are the hardest, there are plenty...
The main show stopper with an orbiting cable based space elevator is the very large expense of transporting the materiel into orbit. The first "starter" cable...
Distance around low earth orbit is 1.6 billion inches. There is about 5000 tons of space junk. At 0.1 pound per cubic inch that would be 100 million cubic...
... I like it! Let's do it! ;-) ... -- -Ian Woollard We live in an imperfectly imperfect world. Life in a perfectly imperfect world would be *much* better....
... The cost of collecting that much debris in that many orbits then fabricating it in orbit would exceed the cost of just launching it in sections with...
Jerry Irvine
01rocket@...
Mar 1, 2009 6:55 pm
8531
... 01rocket@...> ... 5000 tons of stuff shot into orbit at 10,000 dollars a pound cost 100 billion dollars. Gathering and changing orbits using a solar...
... Unfortunately, yes it is a lot more expensive, even with ion drives. The delta-v needed to change orbital planes significantly is extremely large, and in...
You can do any plane change with about 0.8 times the delta-V needed to reach the orbit in the first place. ISP for ion is about 2000 seconds, where for...
... No, actually the worst case is ~16 km/s delta-v- for example with a west-east orbit you may want to access the east-west orbit. There might be tricks you...
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.
