Re: SubOrbital Towers..

From: Spike Jones (
Date: Sun Mar 19 2000 - 01:18:11 MST

> Amara Graps <> writes:
> >> Did you forget about Phobos?
> Anders Sandberg wrote:
> Arthur C. Clarke had a neat solution: make the beanstalk vibrate
> laterally at a suitable frequency (which can be set by its length) so
> that each time Phobos passes it the beanstalk will be out of the way.

Ja but except for the stuff in equatorial orbit, this trick doesnt
really work. I read that in Songs of Distant Earth, and thought
that first vibration mode trick was great, but then I realized that
it would just as easily put the cable in harms way as out of it.
Of course if a low orbiter is *in* an equatorial orbit, then the
vibration is required.

Ive another plan: the center of mass of the cable is in a 5 degree
inclined orbit, then it oscillates back and forth without the difficulties
involved in a first vibration mode. spike

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