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#1 Re: Interplanetary transportation » Carbon Nanotube Cable, or Elevator shaft ? - Eifel Tower to Geosynchronous » 2004-11-27 09:10:49

I understand. But, In order for the vacuum to occur the water has to leave the tube. So if you place one tube end ten feet above the other and both ends are imersed in the water then the water should flow from one open end to the other open end instead of just emptying out both ends at the same time.  It should flow from the higher elevated tube end to the lower one.

#2 Re: Unmanned probes » Carbon and Asteroid Prospectors - Economical Production in Space » 2004-11-27 06:21:51

If the pipeline only weighs 1000 tons you could get it all there in about 12 shuttle launches.

#4 Re: Unmanned probes » ENCOUNTER WITH EROS: - THE NEAR-EARTH ASTEROID RENDEZVOUS MISSI » 2004-11-26 22:32:37

I would think eons of solar wind material has collected on all of these asteroids and the carbon content should be about what the moons is.

#6 Re: Interplanetary transportation » Space Elevators and Pipelines » 2004-11-26 21:58:34

It is for real and that is why it will work for the pipeline to space.

#7 Re: Interplanetary transportation » Space Elevators and Pipelines » 2004-11-26 20:27:21

The point is the technogly is currently here to get a spacestation to Geo. since we already have Geo. orbiting satellites.

#8 Re: Interplanetary transportation » Space Elevators and Pipelines » 2004-11-26 20:01:35

Can we lower a small one from the ISS if it was in a geo. orbit?

#9 Re: Interplanetary transportation » Space Elevators and Pipelines » 2004-11-26 19:52:03

Well, the hyper X plane will be 100 times cheaper. Per pound.
Can you shoot it up in a particle beam?

#11 Re: Interplanetary transportation » Space Elevators and Pipelines » 2004-11-26 19:30:49

How about a tube wall thickness of .333 and an inside tube diameter of 1/4 inch??

#12 Re: Interplanetary transportation » Space Elevators and Pipelines » 2004-11-26 19:13:29

Don't know the math. I just know they say the material is strong enough. How thick does it have to be? How about the same thickness as the Stainless Steel tubing? How much pressure would that withstand? If it is alot then you don't need as many pumps???? Also, I am ERRORIST and am visiting my sister in Fla now.

#13 Re: Interplanetary transportation » Space Elevators and Pipelines » 2004-11-26 19:00:30

I used to be a control room operator at a fossil power plant in Florida for FP&L.

#15 Re: Interplanetary transportation » Space Elevators and Pipelines » 2004-11-26 18:27:44

The frictional loss can be compensated with higher discharge pressures between pumps.We did an experiment at work one day. We used Stainless Steel tubing 1/4 inch with a hydraulic hand held pump and tested the bursting pressure of the tubing. We pumped it up to over 22,000 pounds per square inch before it bursted. That wall thickness was less than 1/16 inch. If we had used 1 inch tubing it would have bursted much sooner.

#16 Re: Interplanetary transportation » Space Elevators and Pipelines » 2004-11-26 18:02:45

But the question is if the total area of horizontal cross section of the walls is less then 1/cm^2. Otherwise you pipe/cable will cost trillions to build.

The pressure from one pump to the next pump should be constant. The smaller the dimater the better because you can get away with a thinner wall thickness tube.

#17 Re: Interplanetary transportation » Space Elevators and Pipelines » 2004-11-26 17:53:52

Calculate how think the walls would have to be for a 1/4" pipe made of carbon nanotubes supporting 90 bars of pressure.

I would think alot thinner than a pipeline with a larger diameter.

#18 Re: Interplanetary transportation » Space Elevators and Pipelines » 2004-11-26 17:51:56

Lets figure out the pipeline first then we can go to Eros????

#20 Re: Interplanetary transportation » Space Elevators and Pipelines » 2004-11-26 17:24:09

Hey so what is wrong with a 1/4 diameter Nanotube pipeline to space?

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