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Hyper-loop

 What is a hyper-loop?


In Musk’s words, a hyper-loop is a system to “build a tube over or under the ground that contains a special environment.” Cars would basically be propelled in this tube. One example could be a huge sort of pneumatic tube where high-speed fans would compress and push the air — although the friction implications make Musk skeptical that it would work. Another option is having a vacuum in the tube and using electromagnetic suspension instead. Musk acknowledges it is hard to maintain a vacuum (one small leak in hundreds of miles of tubing, and the system shuts down), but there are pumping solutions to overcome this. He favors the second solution.
http://www.universetoday.com/104074/what-is-elon-musks-hyperloop-and-why-is-it-important/
How does it work?
Hyper-loop has four key features.
  •  The passenger capsules aren't propelled by air pressure like in vacuum tubes, but by two electromagnetic motors. It is aimed to travel at a top speed of 760 miles per hour.
  • The tube tracks do have a vacuum, but not completely free of air. Instead, they have low pressure air inside of them.  Most things moving through air tubes will end up compressing the air in the front thus, providing a cushion of air that slows the object down. But the hyper-loop will feature a compressor fan in the front of the capsule. The compressor fan can redirect air to the back of the capsule, but mostly air will be sent to the air bearings.
  • Air bearings are ski like paddles that levitate the capsules above the surface of the tube to reduce friction.
  • The tube track is designed to be immune to weather and earthquakes. They are also designed to be self-powering and obstructive. The pillars that rise the tube above the ground have a small foot-print that can sway in the case of an earthquake. Each of the tube sections can move around flexibly of the train ships because there isn't a constant track that capsules rely on.

And solar panels on the top the track supply power to the periodic motors. With these innovations and completely automated departure system, Elon Musk's dreams of the hyper-loop being the fastest, safest and the most convenient form of travel in the world.

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