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[TH] Japanese Firm To Build Space Elevator - Page 2

post #11 of 201
The problem is the tether is very fragile to micrometeorites and elemental oxygen decay.
If it snaps, the whole station would be goner.

They don't have a method to capture the tether if it's lowered from space, near impossible task even for helicopter stunt pilots.
Edited by krabs - 2/29/12 at 7:51am
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post #12 of 201
Quote:
Originally Posted by krabs View Post

The problem is the tether is very fragile to micrometeorites and elemental oxygen decay.
If it snaps, the whole station would be goner.
They don't have a method to capture the tether if it's lowered from space, near impossible task even for helicopter stunt pilots.

At the equator the surface of the earth is spinning at like 1700km/h. Even building this quite a ways north or south would still be causing what ever would be on the end to go flying at insane speeds...it would get shot like a sling shot. I wonder if the sense of stillness we have on the surface would be transferred to what ever is on the end of the cables if they went up or if it would be like riding in a tether ball that had just smacked. If the cables were bending and stretching I think there would be some acceleration/deceleration as well. If they dropped them down from space they would appear to us to go flying by as fast the ground is spinning.

I think I will pass lovin' in this elevator.
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post #13 of 201
And all it takes it one airplane to crash into it and cause massive destruction as it falls down. 22K miles of cables falling down...

There's been quite a few companies claiming that they will do this. One in 2007 with Neil deGrasse Tyson: http://www.pbs.org/wgbh/nova/space/space-elevator.html

excerpt:

Edited by PoopaScoopa - 2/29/12 at 8:27am
post #14 of 201
Of course a rocket is much safer... sitting on top of thousands of tons of fuel, one stray spark and the entire thing explodes. I believe there is a reason why they're trying to build the space elevator: it's safer, even with all the crap we have to deal with in space and the inner atmosphere.

The space elevator is much more economical, and in a sense, much safer too. We'll see what happens.

As for the counter weight, have you ever tried to sling a ball attached to the end of a string around in circles? Same idea, but we're now doing it on a global scale. That's why the tether has to be so long.
Edited by Mad Pistol - 2/29/12 at 8:21am
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post #15 of 201
Quote:
Originally Posted by PoopaScoopa View Post

And all it takes it one airplane to crash into it and cause massive destruction as it falls down. 22K miles of cables falling down...
There's been quite a few companies claiming that they will do this. One in 2007 with Neil deGrasse Tyson commenting on their design: http://www.pbs.org/wgbh/nova/space/space-elevator-liftport.html

Well, it would only be the cable on this side...the plane would have to be 22,000 miles up to cut it and have it fall to earth in which case I am sure it would burn on re-entry. I think 36,000 feet is the most you would need worry about. Plus these would have to be some very big cables...you could probably crash every 747 on the planet into it and not cause any unrepairable damage. I am just guessing, but it would need to be quite massive to hang onto anything substantial that far way from earth.

I am really wondering if they've even thought about any of the physics that would be involved with something like this. They say in the source that they haven't really started to plan, but come on...
Edited by Vagrant Storm - 2/29/12 at 8:27am
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post #16 of 201
Say this does work, and is built someday.

Had anyone thought about what kind of problems may come from a solid object constantly disrupting, and stretching through the atmosphere, may cause?
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post #17 of 201
7.5 day one-way trip in an elevator? Have fun with that...

Why wouldn't the elevator just go a few miles outside of the atmosphere and stop for awhile and then turn around?
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post #18 of 201
Quote:
Originally Posted by wedge View Post

Quote:
The elevator is expected to be able to carry up to 30 people at a time, but don't expect to be able to hop on it spontaneously. Obayashi said that the elevator may be traveling at a speed of 200 km/h (124 MPH), which means that the a one-way trip will take about 180 hours or 7.5 days.
482
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How cool is that? It would be way more efficient to use this elevator to exit the Earth's gravity, then launch shuttles that are already in space to the moon or mars or anywhere else.

What if there is a Power cut? rolleyes.gif

Then it would be neither space nor earth. biggrin.gif
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post #19 of 201
Quote:
Originally Posted by lordikon View Post

7.5 day one-way trip in an elevator? Have fun with that...
Why wouldn't the elevator just go a few miles outside of the atmosphere and stop for awhile and then turn around?

What if said elevator had a bar and other entertainment?

You could throw a quarter out the window and see how far it lodged itself in the street.
    
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post #20 of 201
Quote:
Originally Posted by Schoat333 View Post

Say this does work, and is built someday.
Had anyone thought about what kind of problems may come from a solid object constantly disrupting, and stretching through the atmosphere, may cause?

The atmosphere isn't like a plastic bag with a defined edge. It keeps going with fewer and fewer particles every square meter the farther way from the planet you go. It's not like the scene in Star Trek where they emerged from below the atmosphere on Saturn's Moon Titan.
Edited by PoopaScoopa - 2/29/12 at 8:47am
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