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Re:SpaceX is livestreaming a hyperloop pod competition by Animats on Sunday January 29, 2017 @11:17PM (#13518599)
No, the air in the tube matters, at least in Musk's original design, which has the pod running on a very thin air cushion. In practice, most designs are maglev, for which a hard vacuum is best.
Re:SpaceX is livestreaming a hyperloop pod competition by e2e8 on Sunday January 29, 2017 @11:37PM (#13518716)
But that amount of air may not matter too much for the points discussed in the video which have to do with strength, seals, etc.
Re:SpaceX is livestreaming a hyperloop pod competition by TeMPOraL on Monday January 30, 2017 @03:17AM (#13519425)
That, and AFAIR original design had a system to pull the air from the front to the back, thus lowering the drag while reducing the need for lower air pressure.