Dear Bimiwat:
I had already noted that the weight of the sand might be too much for the
earth's crust to bear so I suggested silica aerogel blocks. Otherwise, the
idea of the great height was the same as that behind the vacuum tube for
rocket trains which Robert Goddard, "father of rocketry" in America, had
proposed and patented. Goddard said rocket trains in a vacuum tube could
attain V1 (orbital velocity) for trips across the country. Thus a
spaceport atop a 60 mile silica aerogel could launch space planes right
into orbit at V1 and with a little more thrust they would attain V2 and go
on to Moonshine City etc.
Premier Rolph Klein would like that. And Fort McMurray would become
Canada's first Space City. Bush wants us to build a "Star Wars Shield"
in a joint program with them, so why not start here?
Z
<http://www.geocities.com/partyofcitizens>
Citizens for the "inherent dignity and worth of the human person"
Quoted words from UDHR/CAT
On Sun, 24 Oct 2004, Bill Watamaniuk wrote:
> Party of Citizens wrote:
>
> > Perhaps you failed to understand plain English. I said "Wind up and throw
> >like Mickey Mantle" to launch the satellite from the top, since I think 60
> >miles is LEO and there is almost no friction from atmosphere.
> >
> > Otherwise you have not explained why this pile of sand or whatever would
> >collapse.
> >
> > Z
> >
> >
> > Zandu Goldbar
> > King
> > Loges-de-Corbeaux
> > Alberta-BC Border Loges-de-Corbeaux BC-Alberta Z6Z 6Z6 CANADA
> > 666-666-6666
> > [EMAIL PROTECTED] http://www.geocities.com/partyofcitizens
> >
> >
> >
> > ..........................................................
> >
> >
> Z,
>
> Okay! Perhaps I assumed too much. I thought you might have at
> least a Junior High School knowledge of math and science. Okay, you
> don't. So let's start with even more basic stuff:
>
> 1) An object, in order to stay in orbit around the earth must
> possess enough velocity to generate a centrifugal (centre-fleeing) force
> equal to the force of gravity which the earth exerts upon it. It's like
> swinging a bucket of water around yourself. Swing it fast enough and the
> water stays in the bucket. Any slower and the water spills out; any
> faster and the handle on the bucket breaks.
> 2) At 60-mile altitude that satellite of yours is going to have
> to travel at about 33,000 miles per hour (give or take a little bit) in
> a circle about the earth's centre. Its natural velocity sitting on top
> of a 60-mile high pile of sand will be something like about 1000 miles
> per hour at the equator and about 600 miles per hour in Northern
> Alberta. So, you're going to have to find somebody who can add about
> 32,000 miles per hour to that natural velocity (at the equator and
> facing east, or 34,000 mph if facing west). Mickey Mantle, I am told,
> could throw a baseball at about 95 miles per hour. So, he's a little
> short..
> 3) Let's assume that you can add that necessary velocity somehow
> to your satellite; here is where there is a difference between the
> equator and Northern Alberta. At the equator all you need do is kick
> your satellite due east with the added 32,000 mph velocity, or due west
> at 34,000 mph and your satellite will be in orbit. Elsewhere but at the
> equator you will have to kick the satellite somewhat north or south in
> order to achieve a great circle orbit.
> 4) If you don't have anyone but Mickey Mantle to help you kick
> your satellite off, you can't do it from a 60-mile altitude. As I said,
> at that altitude your velocity is 32,000+ mph short of what you require
> to put that satellite into orbit. The only location from which anyone
> can throw a satellite into orbit is the geo-stationery point , about
> 23,000 miles above the earth, and the altitude at which communications
> satellites orbit the earth. At that point the satellite is already in
> orbit and only a gentle nudge will suffice to separate it from the
> launching platform.
> 5) Your pile of sand (or whatever) will collapse long before it
> reaches the 60-mile altitude because: a) it will require a base about
> 120-miles diameter. In order to stay put sand cannot be piled at an
> angle steeper than about 45 degrees; b) that volume of sand will sink
> through the earth's crust. I don't know what the limit is, but it's much
> less than that. Earth's highest volcano on the Hawaiian Islands has
> about reached its limiting height at a few kilometres. Everest is
> probably at or near its limit also. The 'three great volcanoes' on Mars
> reached their limit millions of years ago at about 27 kilometres and at
> a gravitational force only about 38% of the earth's. And anyhow, even a
> 60-mile altitude will not give your launching platform anything near the
> 33,000 mph velocity you need for achieving orbit. Kicking a satellite
> off the top of a 60-mile hill of sand will reult in nothing more
> interesting than a long toboggan ride.
>
> Enough yet?
>
> Bill W
>
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