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Re: Going Up!

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On 9/18/2018 8:06 PM, benj wrote:
> On 9/18/2018 7:51 PM, Sergio wrote:
>> On 9/18/2018 3:29 PM, Edward Prochak wrote:
>>> On Tuesday, September 18, 2018 at 2:55:31 PM UTC-4, john wrote:
>>>> Odd
>>>> “You say the space elevator is impossible. Why?“
>>>>
>>>> Why don’t you suggest some logical reasons?
>>>
>>> I think the idea from a space elevator goes back to the 1950s?
>>> Let me look.
>>> Wow was I wrong:
>>> "The concept of a tower reaching geosynchronous orbit was first
>>>   published in 1895 by Konstantin Tsiolkovsky.[3] His proposal
>>>   was for a free-standing tower reaching from the surface of
>>>   Earth to the height of geostationary orbit."
>>>
>>> The basic idea id over 100 years old!
>>>
>>>
>>> A tower does not work as well as a tether design. With the center
>>> of mass slightly above geosynchronous orbit, a cable reaching down
>>> to earth's surface provides everything that is needed.
>>>
>>> No danger of collapse.
>>> deployment is achievable, especially with today's rockets.
>>>
>>> Only the cable is the tough part. material having consistent
>>> Tensile strength for a length over 35,000 km (21,000 miles)
>>> is a challenge.
>>>
>>> So what do you do with it?
>>>   solar power conversion and transmission to earth (requires
>>>                high power transmission lines that long also).
>>>   zero gravity manufacturing
>>>   Human space travel research (Think ISS but higher)
>>>   astronomy observatory
>>>   tourism/entertainment/advertisement
>>>
>>> It would have to be based at an equatorial country, one of
>>> 13 countries: Ecuador, Colombia, Brazil, Sao Tome & Principe,
>>> Gabon, Republic of the Congo, Democratic Republic of the Congo,
>>> Uganda, Kenya, Somalia, Maldives, Indonesia and Kiribati.
>>>
>>> Really, at this point it is only an engineering problem
>>> of building the cables and getting them in place.
>>>
>>> Enjoy,
>>> ed
>>>
>>
>> open questions;
>>
>> if not a tower, what is holding the cable up ?
>> is it a counterweight above geosync ?
>> would one still have to fix cable to the ground ?
>> how to keep the counterweight in position ?
>> is the cable cutting lines of magnetic field?
>>
> Rumor has it that an experiment was tried with such a cable in space not
> as an elevator but as a massive current generator to power some kind of
> SDI device. Reportedly the cable broke and the experiment failed. Who
> knows if they tried it again. Maybe Sergio knows. He seems tuned into
> such things.

https://www-istp.gsfc.nasa.gov/Education/wtether.html

The Space Tether Experiment

Im sure they have done more on this,

https://en.wikipedia.org/wiki/Space_tether

Pendular motion instability -- what the cable space elevator would have,
lots of strange ossicilation modes

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Going Up! The Starmaker <starmaker@ix.netcom.com> - 2018-09-04 10:27 -0700
  Re: Going Up! Edward Prochak <edprochak@gmail.com> - 2018-09-04 13:14 -0700
    Re: Going Up! Sergio <invalid@invalid.com> - 2018-09-04 19:09 -0500
      Re: Going Up! Edward Prochak <edprochak@gmail.com> - 2018-09-14 06:26 -0700
        Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-14 07:25 -0700
          Re: Going Up! Sergio <invalid@invalid.com> - 2018-09-14 09:38 -0500
            Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-14 07:43 -0700
            Re: Going Up! benj <benj.fake@gmail.com> - 2018-09-14 11:26 -0400
          Re: Going Up! Edward Prochak <edprochak@gmail.com> - 2018-09-17 10:01 -0700
            Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-17 12:10 -0700
              Re: Going Up! Odd Bodkin <bodkinodd@gmail.com> - 2018-09-17 21:24 +0000
                Re: Going Up! mitchrae3323@gmail.com - 2018-09-17 14:34 -0700
                Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-17 16:12 -0700
                Re: Going Up! Odd Bodkin <bodkinodd@gmail.com> - 2018-09-17 23:22 +0000
                Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-18 06:29 -0700
                Re: Going Up! Odd Bodkin <bodkinodd@gmail.com> - 2018-09-18 14:30 +0000
                Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-18 08:13 -0700
                Re: Going Up! Odd Bodkin <bodkinodd@gmail.com> - 2018-09-18 16:22 +0000
                Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-18 10:28 -0700
                Re: Going Up! Odd Bodkin <bodkinodd@gmail.com> - 2018-09-18 18:52 +0000
                Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-18 11:55 -0700
                Re: Going Up! Odd Bodkin <bodkinodd@gmail.com> - 2018-09-18 20:04 +0000
                Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-18 13:11 -0700
                Re: Going Up! Odd Bodkin <bodkinodd@gmail.com> - 2018-09-18 21:27 +0000
                Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-18 14:30 -0700
                Re: Going Up! Odd Bodkin <bodkinodd@gmail.com> - 2018-09-19 00:02 +0000
                Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-18 17:20 -0700
                Re: Going Up! Odd Bodkin <bodkinodd@gmail.com> - 2018-09-19 00:42 +0000
                Re: Going Up! Edward Prochak <edprochak@gmail.com> - 2018-09-18 13:29 -0700
                Re: Going Up! Sergio <invalid@invalid.com> - 2018-09-18 18:51 -0500
                Re: Going Up! benj <benj.fake@gmail.com> - 2018-09-18 21:06 -0400
                Re: Going Up! Sergio <invalid@invalid.com> - 2018-09-18 21:26 -0500
                Re: Going Up! mitchrae3323@gmail.com - 2018-09-18 19:38 -0700
                Re: Going Up! Sergio <invalid@invalid.com> - 2018-09-18 21:48 -0500
                Re: Going Up! mitchrae3323@gmail.com - 2018-09-18 19:51 -0700
                Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-19 07:01 -0700
                Re: Going Up! Edward Prochak <edprochak@gmail.com> - 2018-09-19 13:31 -0700
                Re: Going Up! Edward Prochak <edprochak@gmail.com> - 2018-09-19 13:29 -0700
                Re: Going Up! Sergio <invalid@invalid.com> - 2018-09-19 21:00 -0500
                Re: Going Up! Edward Prochak <edprochak@gmail.com> - 2018-09-19 13:14 -0700
                Re: Going Up! Sergio <invalid@invalid.com> - 2018-09-19 21:08 -0500
                Re: Going Up! john <johnsefton288@gmail.com> - 2018-09-18 06:34 -0700
                Re: Going Up! Odd Bodkin <bodkinodd@gmail.com> - 2018-09-18 14:30 +0000
      Re: Going Up! "Chris M. Thomasson" <invalid_chris_thomasson@invalid.invalid> - 2018-09-19 22:37 -0700
        Re: Going Up! Sergio <invalid@invalid.com> - 2018-09-20 10:09 -0500
  Re: Going Up! Haných Ltskáš <lnni@yawlucla.ha> - 2018-09-04 23:08 +0000

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