From: Michael S. Lorrey (mike@datamann.com)
Date: Thu Mar 02 2000 - 21:46:22 MST
Spike Jones wrote:
> Darin Sunley wrote:
>
> > It was my impression that if one wanted a reasonably circular orbit, the
> > only altitude one could jump into orbit from is the altitude of
> > goesynchronous orbit.
>
> Thats a good question, one that I want to work on. If one went
> up about an earth diameter on a cable and let go, what would
> be the shape of that orbit? Also, I have sharpened my calcs a
> bit and found that the whole question of climbing a cable and
> letting go to get into a minimal orbit might be wrong: I found a
> flaw in my reasoning today. I have probably already been
> pummeled by Doug Jones on this, but havent gotten that far
> in my messages. {8^D spike
12000 miles from the center of the earth * 2 * 3.14159 / 24 hours = 3141.59 mph
downrange speed at apogee (isn't that interesting) sitting on top of the
beanstalk.
12000 miles * 5280ft/mi = 6960000 ft
6960000 ft = (32 ft/s^2)(t^2)/2
t^2 = 435000 s^2 = 11 minutes falling time from top of beanstalk at 1 g
accelleration
11 minutes gets you about 18% of 3141.59 miles laterally, or about 600 miles
downrange. Better get yourself something to keep accelerating you. Of course I
could be way off here, doing back of the envelope calculations with equations
and constants off the top of my head. Somebody please tell me how wrong I am....
;)
--
TANSTAAFL!!!
Michael S. Lorrey
Owner, Lorrey Systems
http://www.lorrey.com
ArtLocate.Com
http://www.artlocate.com
Director, Grafton County Fish & Game Assoc.
http://www.lorrey.com/gcfga/
Member, Extropy Institute
http://www.extropy.org
Member, National Rifle Association
http://www.nra.org
"Live Free or Die, Death is not the Worst of Evils."
- General John Stark
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