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[TH] Japanese Firm To Build Space Elevator - Page 12

post #111 of 201
Quote:
Originally Posted by ILoveHighDPI View Post

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. [URL=http://www.overclock.net/image/id/1912505/width/250/height/482]482
[/URL] [URL=http://www.tomsguide.com/us/japanese-space-elevator-sci-fi-carbon-nanotubes,news-14259.html]Source[/URL] 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.


Can everyone please look at the diagram again. This is obviously a translation error. The earth itself is (approximaty) 12,742 kilometers wide, why on earth would someone want to make a tether seven and a half times the width of the planet itself? It is obviously meant to be 96,000 METERS.

Also, wouldn't it be great if they just used it as a way to generate nuclear electricity off planet? If anything goes wrong you just eject it into space! That someone is looking at this seriously is the best news I've ever heard in my entire life.

No, it's not a translation error. Geosynchronous orbit can be achieved at 36,000 kilometers above the surface of the Earth. Why would it take 7.5 days to travel 36 kilometers at 200kph? The diagram is not drawn to scale.
Edited by lordikon - 2/29/12 at 3:18pm
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post #112 of 201
Quote:
Originally Posted by Skaterboydale View Post

Just imagine the size of the shadow this would cast! it'd literally span most of the earth!

96000 km would circle the earth more than twice.
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post #113 of 201
Quote:
Originally Posted by dontpwnmebro View Post

it was incompetency at management that caused those rockets to break up. not some random act of god.
challenger - ignored warnings from engineers that o rings would fail under cold temperatures of the launch
columbia - ignored damages to the shuttle after several flights cuz "dint cause no problem befur"

Look at Russia's Soyuz and other US rockets that launch satellites they have catastrophic failures all the time. So if you think that NASA's poor management was bad then think again because they've got a better record than most. Rockets are a poor way to get into space, and every alternative has been stalled or mothballed to keep building rockets, to top it off, the civilian systems will have little to no backup systems, and will use solid fuel rockets. so better hope that the corner cutting to increase profit wont cause a problem because once she's lit you're in for a ride.
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post #114 of 201
Quote:
Originally Posted by ILoveHighDPI View Post



Also, wouldn't it be great if they just used it as a way to generate nuclear electricity off planet? If anything goes wrong you just eject it into space! That someone is looking at this seriously is the best news I've ever heard in my entire life.

96KM from the surface will just fall back down to Earth. How are they going to "eject" it? The space station has to constantly re-adjust itself to prevent from losing altitude out at 370-400km. It also changes altitude to avoid space debris.
post #115 of 201
I like to think that something like this would help to jump start economies think of all the possibilities that different mega companies would take advantage of plus this would make the moon a viability again and possibly (in years to come) allow for colonization.
post #116 of 201
Quote:
Originally Posted by racer86 View Post

I like to think that something like this would help to jump start economies think of all the possibilities that different mega companies would take advantage of plus this would make the moon a viability again and possibly (in years to come) allow for colonization.

I agree. Think of the number of jobs this would create, the mining of the materials, the fabrication of materials, the staff to oversee everything, the research behind all of it. I'm all for it if it gets the public back into space exploration.
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post #117 of 201
Quote:
Originally Posted by PoopaScoopa View Post

96KM from the surface will just fall back down to Earth. How are they going to "eject" it? The space station has to constantly re-adjust itself to prevent from losing altitude out at 370-400km. It also changes altitude to avoid space debris.

It's not 96km. It's 96k km. That's 96,000 km. The end of the cable, at the counterweight, at 96k km out, will be traveling at well over earth escape velocity. Ejecting at ~5k km can get you to the moon or its Lagrange points. Ejecting from the end of the tether could send something as far as Jupiter; and Jupiter could be used to slingshot something out of the solar system entirely if the geometry is right.
post #118 of 201

By 2050... I'll be dam old to walk.

 
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post #119 of 201
Who is going to build it? No 1 Government has enough money to build such a thing. Its not something people would invest money when they will not live to see it. There are just too much Negatives to this then positives. Also Space Elevators are not the future. The Future is Privatively owned space rockets that you can fly out of any location without the extreme cost of fuel but a different source of energy.
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post #120 of 201
Here was i hoping it was something like in Gungam 00 with vertical monorails.
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