[opendtv] Re: Mag-lev
- From: John Willkie <johnwillkie@xxxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Mon, 6 Nov 2006 19:44:17 -0800 (GMT-08:00)
You could have two parallel tunnels, and vehicles traveling at the same time in opposite directions, with air interchanges at each end and 'punch-through' airlocks for the terminals.
Might help to make the tunnels about 10x the diameter of the 'vehicles.'
I've actually heard on a radio show that such a system has been built, or is being built in secret, by the Bush administration. But, those are talking about being closer to the surface. It's given as an explanation of years of ground noises in Topeka, KS. The 42 minute coast to coast time was even given.
Of course, such a system would, if not bypass Topeka, be so deep underground at that point, that even extensive construction noise would not filter to the ground.
John Willkie
-----Original Message-----
From: flyback1
Sent: Nov 6, 2006 6:31 PM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: Mag-lev
Sonic Booms? I just left that out figuring it would not matter much in light of everytthing else that was happening.
And if it's a confined cylinder, not a tunnel, what about the atmospheric pressure building up as the car hurtles
down through the earth? At what point would it get high enough and fire the car back where it came from,
maybe launching it into sub-orbital space?
"If God had intended man to fly, He'd never have given us the railways.
~Michael Flanders and Donald Swan
John Willkie wrote:
good rant, but you forgot the cumulative effect over 42 minutes of the reflected sonic booms. Assuming that the first one doesn't derail the car ...
Sonic booms in a confined cylinder.
John Willkie
-----Original Message-----
From: flyback1 <flyback1@xxxxxxxxxxx>
Sent: Nov 1, 2006 12:51 PM
To: opendtv@xxxxxxxxxxxxx
Subject: [opendtv] Re: Mag-lev
OK, all this theoretical stuff is just that. Theoretical.
To quote Monty Python,
"Stop That! It's Silly!"
At 17,670 miles per hour the 'tube car' making a journey through the
center of the earth would need every life support system plus the
thermally protective ceramic tile outer surface the Space Shuttle has.
It would also need the ability to physically withstand the very high
compression atmospheric pressure it would experience at that speed while
diving through a tunnel
going through the center of the earth. This is not like flying through
the outer atmosphere to get to space, it's far more intense.
Another problem is the fact that as the thing passes the '50 mile deep
point' in it's travel toward the center of the earth the mantle gives
way to the molton core.
How are you going to build [much less run a tube car with human life
forms aboard through] a tunnel through the center of the earth that will
withstand the temperature and pressure of the molton core?
If you can do that, I can think of a lot better, more productive and
business savy applications for THAT technology.
One other point: I suspect the occupants of the 'tube car' would
resemble broiled lobster when they reach China or what ever destination
is deemed proper.
If you want to propose something rational and useful, why not try to
find a way to multiplex ultrawideband communications signals with
natural gas running through buried pink plastic pipes running under all
the city streets in the country?
John Shutt wrote:
http://www.damninteresting.com/?p=696#more-696
17,670 MPH
And a trip from any point to any other point would be about 42 minutes
regardless of the distance between endpoints.
John
----- Original Message ----- From: "Bob Miller" <robmxa@xxxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
How is this. Free fall is the absence of any resistance or counter
force to a body's obeying the laws of gravity.
What speed would be reached as you pass the center? Anyone know? I don't
Bob Miller
----------------------------------------------------------------------
You can UNSUBSCRIBE from the OpenDTV list in two ways:
- Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org
- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.
----------------------------------------------------------------------
You can UNSUBSCRIBE from the OpenDTV list in two ways:
- Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org
- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.
----------------------------------------------------------------------
You can UNSUBSCRIBE from the OpenDTV list in two ways:
- Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org
- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.
Other related posts:
