in 20km distance from the surface? how would that work when the geostationary orbit is 35km from the surface.. either they plan to keep it in place with boosters (waste of fuel) or have a counter weight at the geostationary orbit, but the station would then cause an enormous amount of shear stress to the cables, probably way more than any viable material for the cable could take
20km is not really a space elevator, it's still miles away from space. Even aircraft and balloons can reach this altitude without much problem.
A real space elevator would need to reach at least 150km to get to space, and a couple more to reach low earth orbit altitudes
| Lafiel said: in 20km distance from the surface? how would that work when the geostationary orbit is 35km from the surface.. either they plan to keep it in place with boosters (waste of fuel) or have a counter weight at the geostationary orbit, but the station would then cause an enormous amount of shear stress to the cables, probably way more than any viable material for the cable could take |
Not even 35 kilometers, it's 35 thousand kilometers for a GSO. Or, to be precise, 35786 kilometers. And yeah, any space elevator either needs to reach this altitude or put a satellite there as an anchor. This also limits the distance from the equator where you can build such a thing to +- 30 degrees north or south.
| pokoko said: The space program needs this to happen. It's the logical next step. The way it's done now is so incredibly expensive that it's prohibitive. After reading the Red Mars novels, though, I can never think of a space elevator without dreading the potential for terrorism. You do NOT want this to come crashing down. |
As long as it's more than 20KM from the nearest significant concentration of people it shouldn't be a problem.
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Hm... 20 km is hardly a real space elevator. You are already in the stratosphere, but the atmosphere is still pretty thick. It would still need a hell lot of fuel to get yourself into an orbit. But anyway, it's a start I guess.
| Luke888 said: Can a person jumping off that height burn ? if so can he do it completely so everyone who wants to kill themselves have both a cool way to die and in a way that doesn't damage other people... (I know they couldn't breath at that height but I was wondering) |
No, you won't have any serious reentry effects from that altitude. If you're just jumping off that tower, you don't have any relative velocity to begin with. The reason why asteroids or space ships are burning so hard is because they enter the atmosphere at speeds of 3 km/s or more. So you'll just reach terminal velocity (about 200 km/h) after a few seconds and fall onto the ground. That is way too slow for any heating or stuff like that.
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Sounds like the guy watched Cyber City Oedo before he wrote his patent
“It appeared that there had even been demonstrations to thank Big Brother for raising the chocolate ration to twenty grams a week. And only yesterday, he reflected, it had been announced that the ration was to be reduced to twenty grams a week. Was it possible that they could swallow that, after only twenty-four hours? Yes, they swallowed it.”
- George Orwell, ‘1984’
| OdinHades said: Hm... 20 km is hardly a real space elevator. You are already in the stratosphere, but the atmosphere is still pretty thick. It would still need a hell lot of fuel to get yourself into an orbit. But anyway, it's a start I guess.
|
D: you crashed many people's wishes of suicide
That would be a damn fine base jumping platform.
Has anyone read how this would actually work though... it says "self supporting" which to me means no guy-wires, and "inflatable sections" so does that mean it is held up by helium balloons?
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