[ RadSafe ] space elevator

[Joseph Preisig]

Hmmmmm,

       I posted the space elevator news because it was news.  Don't
think it is viable???

       Clearly, a TR3B or some other flying saucer could be built in
the public domain with enriched uranium or plutonium reactor power.
The TR3B is faster than modern jets, due to its levitation ability.
Heck, German Haunebu's have been around for more than 70 years???  We
continue to fund public domain and black project flight systems --- it
is expensive.  A mothership could have more than one reactor, and
could have shuttlecraft flying saucers coming from it.

      Joe Preisig



On 8/17/15, Brennan, Mike  (DOH) <Mike.Brennan at doh.wa.gov> wrote:
> I've been following Liftport, one of the leaders in the space elevator quest
> for some time, and it is a very interesting proposition.  We now have
> materials that could be used for a Moon-to-space elevator, though we do not
> have materials that can be used for an Earth-to-space elevator (but there is
> good reason to believe we will be there soon).
>
> The Earth-to-space elevator proposed by Liftport would have a station in
> geosynchronous orbit (about 42,000 km), with a ribbon continuing out another
> 90,000 km (give or take) to act as a counterbalance.  Cars climbing the
> ribbon from the ground would take one to two weeks to reach the station
> (cars going to Low Earth Orbit to release satellites would get there in a
> couple of days).  The counter balance ribbon could be used as a launch
> system, letting probes free-wheel down the ribbon, using centrifugal force
> to sling (literally) the package out of the Earth-Moon system (targeting
> left as an exercise for the reader).
>
> Shielding will be a non-trivial issue, as the station at geosync will be in
> the Van Allen Belt, rather than below it like the ISS.  It may be that a lot
> of the work at the station will be done via telepresence.
>
> -----Original Message-----
> From: radsafe-bounces at health.phys.iit.edu
> [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of ROY HERREN
> Sent: Monday, August 17, 2015 3:35 PM
> To: The International Radiation Protection (Health Physics) Mailing List;
> The International Radiation Protection (Health Physics) Mailing List
> Subject: Re: [ RadSafe ] space elevator
>
> An operable space elevator would be a wonderful step towards humanities
> reaching out and inhabiting space.  The financial cost per kilogram of
> material currently launched into space is a limiting factor that is holding
> back greater exploration of space.  It's hard to imagine though how any
> one company or even country could afford to build such a complicated and
> large of a structure.  If this is to happen, it will likely require an
> international consortium for financing and construction.
> Question, where in space would such an elevator terminate, i.e. a space
> port, a space dock for assembling space ships, etc.?
> Just to rope this discussion into the mailing list topic of concern, would
> deep-space manned space ships assembled in a space dock initially have
> fission reactors?  What would propel such ship, ion propulsion? Could
> deep-space space ships harvest enough interstellar gas to provide
> propulsion, or would they have to bring all the material with them from
> earth?
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