posted on Nov, 13 2005 @ 12:10 PM
Asuming the geological issues were solved, and the vacuum issues are solved, the remaining points are pretty easilly addressable.
As far as an air supply for passengers during their trip through a vacuum, we can just use the same systems we use on any commercial aircraft or the
space shuttle - a pressurized cabin. As long as the air within the cabin is sealed from leaking into the vacuum, there's no effects on the
passengers regarding air supply - the pressurized interior air moves with the vehicle, just as a part of the vehicle itself would.
Additionally, in taking care of the G-force issues or acceleration and deceleration, I'm surprised that nobody has mentioned the discoveries by
French scientists of a type of anti-inertial system. The system was orginally researched to prove that the flight qualities of UFOs are possible, and
has yeilded some practical scientific results. Essentially, what the system is, as I understand it, is a magnetic "bubble" that reduces friction
and gravitational effects on the object contained within the "bubble". If this technology pans out as legitamate, not only have we solved the
inertial issues, but also possibly the vacuum issues as well, as creating a vacuum within the entire length of the tunnel wouldn't be necessary (and
also, it wouldn't need to be a tunnel at all - it could be built as a ground level or elevated track, with tunnels through the mountains).
For more information on the anti-inertial technology, refer here: French Anti-Grav and
Anti-Inertial research link