Friday, January 04, 2013

Ultra-efficient 4,000 mph vacuum-tube trains – no friction, no drag. Fraction of energy costs.

Media_httpimagesgizma_ijfch

mag-lev rail lines remove all rolling friction from the energy equation for a train, and accelerating them through a vacuum tunnel can eliminate wind resistance to the point where it's theoretically possible to reach blistering speeds over 4,000 mph (6,437 km/h) using a fraction of the energy an airliner uses – and recapturing a lot of that energy upon deceleration. Ultra-fast, high efficiency ground transport is technologically within reach – so why isn't anybody building it?

No comments:

FriendFeed.com/web2024