http://venturebeat.com/2013/08/13/everything-you-ever-wanted-to-know-about-elon-musks-hyperloop-super-train/
Everything you ever wanted to know about Elon Musk’s Hyperloop super train
JOHN KOETSIER AUGUST 13, 2013 8:40 AM
TAGS: ELON MUSK, FEATURED, HYPERLOOP, SPACEX, TESLA
hyperloop
Image Credit: Tesla
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Inventor, philanthropist, billionaire, and titan of industry Elon Musk unveiled a 57-page plan yesterday for a super-speed train that would take passengers between LA and San Francisco in just 30 minutes.
We previewed it, and we covered it.
But there’s a lot more to know about the Hyperloop — a high-speed train-in-a-tube that makes all other high-speed trains look like they’re stuck in first gear — including the current fastest train in the world in regular operation, the 268 mph Shanghai maglev train, which I’ve personally ridden.
You could all read those 57 pages — or scan these Cole’s Notes.
The basic Hyperloop concept in a nutshell:
People-carrying capsules running through a long metal tube
28-person capacity
40 total capsules in activity at rush hour
Almost a cross between the pneumatic tube delivery systems in old buildings and a Japanese bullet train
Capsules float on cushions of air like hockey pucks
Tube is elevated on 25,000 concrete pylons
Gallery: Gallery
Screen Shot 2013-08-13 at 8.28.45 AM
Screen Shot 2013-08-13 at 8.29.10 AMScreen Shot 2013-08-13 at 8.29.34 AMScreen Shot 2013-08-13 at 8.29.52 AMScreen Shot 2013-08-13 at 8.30.05 AMScreen Shot 2013-08-13 at 8.30.22 AMScreen Shot 2013-08-13 at 8.31.39 AMScreen Shot 2013-08-13 at 8.32.07 AM
The Hyperloop’s speed and initial routes:
Up to 760 miles per hour, or Mach .91 at the tube’s air pressure
Slowing to 300 mph for turns
Compares to most airplanes’ speed of 550 mph
At Hyperloop speeds, travel time from L.A. to San Francisco is 30 minutes
Additional cities to be added later: San Diego, Sacramento, and Fresno
Screen Shot 2013-08-13 at 8.32.07 AMCosts:
Passenger capsules: $1.3 million each
Car and cargo capsules: $1.5 million each
Stations: $125 million each
Tube, pillars, and stations: $4 billion, or $5.31 billion for a larger tube with higher capacity
Total cost: $6.1 billion
Comparison: the proposed California High Speed Rail project is estimated at $68.4 billion
Air, pressure, and pumping:
Atmospheric pressure inside the tube: 17 percent of the pressure of Mars, which is already only 1 percent of Earth at sea level
Equivalent to the air pressure on earth at 150,000 feet, four times higher than most airplanes fly
There’s still too much pressure against the capsules, so each capsule pumps air from the front to the back via a compressor — and uses some of it to float on like a hockey puck
Power:
All power is provided by solar panels on the top of the 381-mile-long tube
Energy cost per passenger: less than 100 megajoules (about 3/4 of a gallon of gas)
Energy cost per car in cargo capsules: about 220 megajoules
Per-passenger comparisons: car (800 MJ), motorcycle (900MJ), airplane (1100 MJ)
Screen Shot 2013-08-13 at 8.30.22 AMTicket prices and round-trip travel times:
Hyperloop: $40 round-trip
1 hour 10 minutes total travel time
Airplane: $158 round-trip
2 hours 30 minutes total travel time
Car: $115 round-trip (gas only)
11 hours total travel time
Proposed California High Speed Rail: $210 round-trip
5 hours total travel time
Screen Shot 2013-08-13 at 8.30.05 AMSafety and reliability
Capsules always connected via radio with station operators
Redundant power supplies on-board
Backup mechanical braking mechanism in case electrical motors fail
Oxygen masks for passengers deploy in case of depressurization
Tube can be rapidly re-pressurized if needed
Tube built with flexibility to withstand earthquakes
Motors
Motors are in the tubes, not the capsules
Hyperloop uses linear induction electric motors, similar to those in the Tesla
The linear induction motor works via electromagnetism
Motors are only required for about one percent of the tube: initial speed-up and quick top-ups every 70 miles
Most of the time, capsules simply coast
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