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[TH] Japanese Firm To Build Space Elevator - Page 20

post #191 of 201
Quote:
Originally Posted by Sapientia View Post

doh.gif

Actually a captured asteroid is a prime contender for a feasible counterweight.
post #192 of 201
It's like the Charlie and the Chocolate Factory sequel (that was never adapted into a film)!
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post #193 of 201
Quote:
Originally Posted by Phaedrus2129 View Post

Actually a captured asteroid is a prime contender for a feasible counterweight.

Read the Red Mars books, they actually had a enginer/science report used to describe these elevators in the series (and what would happen in an attack).

One phrase for the use... "Orbital Dry Dock" for making large and advanced interplanetary vehicles.
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post #194 of 201
Quote:
Originally Posted by Silver_WRX02 View Post

Those suspension may not work on huge earthquake like 9.0 magnitude or may not work on building that is as tall as this space elevator.

Lets not forget that the cable (because of it's extreme length) will be able to stretch and retract by lengths of MILES and absorb any shock.
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post #195 of 201
Quote:
Originally Posted by Phaedrus2129 View Post

Quote:
Originally Posted by Sapientia View Post

doh.gif

Actually a captured asteroid is a prime contender for a feasible counterweight.

If there were an asteroid of the right size in exactly the right trajectory so that it could be captured with minimum effort perhaps. To move one requires extreme amounts of fuel to do it in a short period of time. In lieu of using brute force, something like a solar sail could be used to nudge one into place, but this would require massive amounts of time instead of massive amounts of fuel. There is also the inherent risk (very high probability)of screwing up and nudging the asteroid into a collison course with earth, which would obviously be catastrophic.

Realistically I think the best way to get the mass required for the counterweight and facilities into the right place (and at the right velocity) would be to launch it bit by bit from Earth. A cannon would be ideal for this. Space cannons are the elephant in the room when talking about our presence in space. They are the cheapest and most energy efficient (and environmentally friendly) way to put things into orbit, yet NASA and the rest of the space agencies around the globe refuse to construct one, other than small prototypes. Iraq actually had one 90% complete that was capable of putting objects into orbit (although it was aimed at Israel) 20 years ago before we blew it up. 30 years ago while still in high school I wrote a paper on the possibility of using nothing but water (and the force of gravity acting on the water) to put things into orbit with a cannon. It is actually possible to do this, it is just a matter of scale and will power. John Hartfords "Steam Powered Aeroplane" might be fantasy, but using hydraulic force to generate super high pressure steam can be used to launch things into orbit. There is even a possibility that humans could be launched into orbit this way, although it gets tricky compared to just launching hardware that can withstand extreme acceleration.
    
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post #196 of 201
oh man... wouldn't wanna fart in THAT elevator...
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post #197 of 201
Quote:
Originally Posted by Faded View Post

oh man... wouldn't wanna fart in THAT elevator...

In light of the the projected 7.5 day travel time each way, I think you would be doing a lot more than farting .
    
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post #198 of 201
Surely a huge mass at the edge of the earths atmosphere would cause a slight disturbance to the earths gravity and would slowly change its orbit which could cause the end of the world a thousand years in the future. Just my random theory that makes no sense :L
    
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post #199 of 201
Quote:
Originally Posted by Fr0sty View Post

ideas like these are too stupid to even care about

ideas likes these are why anything technological even exists.

Everything has to start somewhere. A crazy idea. A crazy investor. Next thing you know "First Space Elevator Built!"

Everyone seems to think a team of monkeys will be designing this... most likely they will have a PhD Astrophysicist dedicated to just one tiny aspect of the project along with 1,000 others.
Edited by kennyparker1337 - 3/2/12 at 2:52pm
post #200 of 201
Quote:
Originally Posted by NinjaDuck View Post

Surely a huge mass at the edge of the earths atmosphere would cause a slight disturbance to the earths gravity and would slowly change its orbit which could cause the end of the world a thousand years in the future. Just my random theory that makes no sense :L

In relation the the mass of the Earth, the counter weight mass required is extremely tiny. It only has to be enough to counter-act the pull of gravity on the portions of the structure within the gravity well of Earth, including of course any "elevators" and payloads, along with atmospheric drag and any other forces applied to the line (earthquakes?)which although lateral, would translate into a tug on line towards Earth. However, in relation to our current methods for putting things into orbit, the counterweight, along with the weight that it is counteracting, constitutes many orders of magnitude of what we can put in space do with any efficiency or practicality today.
    
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