re: I don't see any other way

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re: I don't see any other way

Ryan — 1/28/2004 10:44:41 AM (archived)

Energy conservation my friend... if you pull a 1 tonne object up 1500 km, the 1500 tonne object it's attached to goes down 1 km. You only get "free" energy if you're out past geosynch orbit... an order of magnitude or two higher than your 2km skyhook.

Also, we can't even make nanotubes longer than your arm, and definately not a few dozen thousand km of it.

Not this half of the century I'm afraid, though if we ever pull it off it'd be great.

The whole thread (29 posts)

why go to Mars from the Moon? - Delbert - 1/15/2004 1:02:43 AM
- re: why go to Mars from the Moon? - Larry J - 1/15/2004 1:46:27 AM
  - That's Not The Main Problem - Mark Eby - 1/15/2004 3:07:53 AM
    - Refueling on the Moon was debunked decades ago - Gary - 1/15/2004 6:09:02 AM
      - Would you care to elaborate? - McFly - 1/15/2004 2:21:56 PM
        
        re: Would you care to elaborate? - Gary - 1/15/2004 6:39:30 PM
        
        re: Would you care to elaborate? - McFly - 1/15/2004 7:24:42 PM
        
        re: Would you care to elaborate? - gbaikie - 1/15/2004 9:20:27 PM
      - re: Lunar Resources - Success_Machine - 1/15/2004 8:43:27 AM
        
        Helium 3 oversold - Tom Brosz - 1/15/2004 5:08:34 PM
        
        Helium 3 is complete bull dung - Gary - 1/15/2004 5:37:05 PM
        
        re: Lunar Base will be set up around 2020 AD - Success_Machine - 1/26/2004 1:59:32 PM
        
        Nuclear fusion - Gary - 1/27/2004 6:43:05 AM
        
        re: Nuclear fusion - Ryan - 1/28/2004 10:00:59 AM
        
        re: Lunar Helium-3, and Orbiting Fusion Powerplants - Success_Machine - 1/15/2004 8:55:34 AM
        
        re: Orbital Skyhook (ARMXER) concept - Success_Machine - 1/15/2004 9:47:16 AM
        
        Has anyone ever accused you of not "Dreaming big"? N/T (n/t) - Scott Evil - 1/15/2004 3:31:07 PM
        
        re: I don't see any other way - Success_Machine - 1/16/2004 6:00:16 AM
        
        re: I don't see any other way - Ryan - 1/28/2004 10:44:41 AM
  - Launching from the Moon - Tom Brosz - 1/15/2004 2:59:08 AM
- What he means is - Buck Galaxy - 1/15/2004 1:30:39 AM
  - re: What he means is - Mark Eby - 1/15/2004 3:15:43 AM
    - Relative delta-Vs don't matter. You're building Moon infrastructure using stuff launched from Earth. It makes no sense. - Chris Vancil - 1/15/2004 8:25:23 AM
      - re: Clarification: Moon fuel can't cost less than that from Earth unless it is already refined and in tanks when you get there. (n/t) - Chris Vancil - 1/15/2004 10:53:40 PM
      - re: Clarification: Moon fuel can't cost less than that from Earth unless it is already refined and in tanks when you get there. (n/t) - Chris Vancil - 1/15/2004 10:53:27 PM
  - It's Easier to Reach The Moon From Mars Than Earth. - Mark Eby - 1/15/2004 3:12:17 AM
    - Why reinvent the wheel? - Old space fan - 1/25/2004 1:00:00 PM
      - Shuttle Simply Doesn't Have Enough Power. - Mark Eby - 1/25/2004 9:08:23 PM
        
        re: Shuttle Simply Doesn't Have Enough Power. - gbaikie - 1/26/2004 11:37:46 PM

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