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A vacuum tube without sufficient structural integrity, would crush inward killing everyone inside.
I saw the plans for the prototype which has a 2-3 inch walls. The problem for a real tube would need a wall that was about 10 ft thick.
Metal like steel will be very costly. For the thickness needed, at a price of about $400/tonne, I don't see how they can build it for $10billion.
Assuming we take the known values, 383miles to San Fran and LA (20.2million feet). 10 feet by 1 feet thick steel is about 100 lbs. For the hyperloop circumference of about 30 ft diameter is 94ft circumference. or about 9400lbs of steel per foot of the hyperloop. Or about 189.9 billion lbs of steel. Or 95 million tonnes or about $40 billion for the wall of the hyperloop. That doesn't include the build out infrastructure or the hyperloop train. Thats before all the other problems with laws of thermodynamics.
[+]Fibbideh2 points-2 points0 points
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[–]Fibbideh2 points
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The person lying here is you.
Where did you get 10ft wall thickness? And the hyperloop isn't a vactrain from the 70s. It's a reduced pressure, magnetically driven train riding on "air castor" skis. Public skepticism for safety will probably push it toward freight use than passenger travel, imho.
E: what, no counter argument? Just a downvoat? Can you not defend your own statements when presented with an opposing idea?
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[–] aristotle07 0 points 2 points 2 points (+2|-0) ago
A vacuum tube without sufficient structural integrity, would crush inward killing everyone inside.
I saw the plans for the prototype which has a 2-3 inch walls. The problem for a real tube would need a wall that was about 10 ft thick.
Metal like steel will be very costly. For the thickness needed, at a price of about $400/tonne, I don't see how they can build it for $10billion.
Assuming we take the known values, 383miles to San Fran and LA (20.2million feet). 10 feet by 1 feet thick steel is about 100 lbs. For the hyperloop circumference of about 30 ft diameter is 94ft circumference. or about 9400lbs of steel per foot of the hyperloop. Or about 189.9 billion lbs of steel. Or 95 million tonnes or about $40 billion for the wall of the hyperloop. That doesn't include the build out infrastructure or the hyperloop train. Thats before all the other problems with laws of thermodynamics.
So someone is lying.
[–] Fibbideh 2 points -2 points 0 points (+0|-2) ago (edited ago)
The person lying here is you.
Where did you get 10ft wall thickness? And the hyperloop isn't a vactrain from the 70s. It's a reduced pressure, magnetically driven train riding on "air castor" skis. Public skepticism for safety will probably push it toward freight use than passenger travel, imho.
E: what, no counter argument? Just a downvoat? Can you not defend your own statements when presented with an opposing idea?