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What is the theoretically fastest way that you could get from LA to San Francisco?
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It can never crash.
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It’s immune to weather.
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The hyperloop, you know, is something that would go effectively faster than the speed of sounds.
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Elon Musk has been talking about hyperloop for a while in the vaguest possible terms
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until now because he has released a 57-page document outlining his plans.
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If you’re not familiar with Musk, he’s been involved or come up with paypal,
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Testla electronic cars, the Space X program which came up with the world’s first reusable rockets
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and designed the Falcon rocket system for NASA.
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He’s invested heavily in solar energy.
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Basically, he’s had more great ideas than I have had.
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And his plans for Hyperloop would involve linking 2 urban areas,
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probably no more than 1,500 kilometers apart,
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with a low-pressure pneumatic tube-type system,
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sending pods carrying people from town to town at close to sonic velocity.
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Now, he’s proposals are to build a cheap network from Los Angeles to San Francisco.
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Because going much farther than that, he says it would become economically unviable.
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It will be cheaper to go by a Supersonic plane.
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Now if you’ll just have a tube, full of air with pods travelling through it, that wouldn’t be quick.
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The friction would make the source of speeds he’s talking about is impossible.
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There have been similar plans released previously by Rand Corporation and ET3.
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That would be even quicker than these ones using electromagnetic suspension in a total vacuum.
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But the problem there is leaks.
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One seal or small crack on a huge tube network would stop it working.
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But Musk has a solution to that which is a low pressure system instead of a total vacuum,
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that could cope with small leaks but would introduce another problem –
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the Kantrowitz Limit
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In basic terms, if the walls of the tube and the capsule are too close together,
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the capsule begins pushing the air in the system instead of letting it flow past.
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A bit like a pressure build-up in a syringe.
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So the Kantrowitz Limit means that you have to either travel very very slowly
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or build a tube with a huge diameter in which case you can travel quicker
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but you subject yourself to crushing g force as soon as you get round the slightest bend.
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But again Musk has a solution which is to put a battery powered electric compressor fan
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at the front of the pod pumping air to back and relieving pressure.
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He reckons that would work when combined with an external linear electric motor.
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That’s the same sort of one that you’d get in an electric car but flattened.
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And that would accelerate the pods up to full speed and give them a power boost every now and then.
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So all of this is gotta be ridiculously expensive, right?
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Well, Elon Musk reckons that he can build this for several billions dollars which sounds like a lot
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but he says that it’s still cheaper than the proposed high speed rail network in California.
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So his proposal would be to build an elevated tube network on pylons alongside an existing highway.
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And that would provide a straight line, relatively few land disputes and be able to be built in prefabricated sections.
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And on top of all of that, he says his plans would be more resistant to earthquakes and thermal expansion and contraction than a traditional railway.
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So it sounds perfect but obviously, there were skeptics.
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As I’ve seen for this seemed really low for me for a system that requires rights of way through major metropolitan regions which this one does.
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Even when you build an elevated… say an elevated train which we do all the time in transportation,
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There are substantial costs to that in terms of right of way acquisition
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and there will always environmental lawsuits challenging your ability to try to construct such rights of way.
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Because people don’t necessarily want new elevated things whizzing by their houses.
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So there were doubts as to whether or not this can actually happen.
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But if Elon Musk plans can become a reality, there will be faster, cheaper, more environmentally friendly,
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more earthquake resistant, more weather proof, and less disruptive than current modes of transport.
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So, I for one hope that I can travel on this within the next few years.
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I’d also like to see him build me a hoverboard.