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Micro Gravity and A Space Elevator?
On Jun/11/2020 at 18:09, JF Mezei wrote :
On 2020-06-11 13:37, David Spain wrote: Actually, have read articles that suggest rocket propulsion for this purpose. The space elevators I have seen used mag lev engine to cause it to rise along the spine. (for instance, when Neelix and Tuvok use on in S03E19 of Star Trek Voyager :-) Hydro Québec has a 450kv DC power line from James Bay to Boston which is nearly 1500kim long. (it is +450kv and -=450km so really 900kV line). It is nearly uninterrupted eccept for one station near St-Lawrence river (Nicollet) where they draw some power from it to feed the QUébec grid, with the rest going to USA. That 1500 km line is *very* heavy. You want to use the best strength to weight ratio, you don't want to add the constraint that the material is also a good electrical conductor. Alain Fournier |
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