LIVE: DETAILS ON ELON MUSK'S HYPERLOOP DESIGN

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Asa Mathat | D: All Things Digital

Elon Musk has finally revealed his plans for the Hyperloop

We're reading over his blog post on the Hyperloop now. 

In the meanwhile, Bloomberg Businessweek published an interview with Musk where he sketched out the Hyperloop idea:

Musk argues that the Hyperloop represents a type of middle ground that other people have yet to consider. Instead of being a complete vacuum or running at normal conditions, the Hyperloop tubes would be under low pressure. “I think a lot of people tended to gravitate to one idea or the other as opposed to thinking about lower pressure,” Musk says. “I have never seen that idea anywhere.”

Inside the tubes, the pods would be mounted on thin skis made out of inconel, a trusted alloy of SpaceX that can withstand high pressure and heat. Air gets pumped through little holes in the skis to make an air cushion, Musk says. The front of the pod would have a pair of air jet inlets—sort of like the Concorde. An electric turbo compressor would compress the air from the nose and route it to the skis and to the cabin. Magnets on the skis, plus an electromagnetic pulse, would give the pod its initial thrust; reboosting motors along the route would keep the pod moving. And: no sonic boom. With warm air inside the tubes and high tailwinds, the pods could travel at high speeds without crossing the sound barrier. “The pod can go just below the speed of sound relative to the air,” Musk says.

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