Evacuated Tube Transport Idea Is 200 Years Old This Year!
Take a look at Evacuated Tube Transport, a proposed transportation system that is (claimed!) to be silent - and faster and cheaper than planes, trains, cars and jets.
(ET3 Evacuated Tube Transport)
Car sized passenger capsules travel in 1.5m (5') diameter tubes on frictionless maglev. Air is permanently removed from the two-way tubes that are built along a travel route. Airlocks at stations allow transfer of capsules without admitting air. Linear electric motors accelerate the capsules, which then coast through the vacuum for the remainder of the trip using no additional power. Most of the energy is regenerated as the capsules slow down. ET3 can provide 50 times more transportation per kWh than electric cars or trains.
Speed in initial ET3 systems is 600km/h (370 mph) for in state trips, and will be developed to 6,500 km/h (4,000 mph) for international travel that will allow passenger or cargo travel from New York to Beijing in 2 hours. ET3 is networked like freeways, except the capsules are automatically routed from origin to destination.
ET3 capsules weigh only 183 kg (400 lbs), yet like an automobile, can carry up to six people or 367 kg (800 lbs) of cargo. Compared to high speed rail, ET3 needs only 1/20th the material to build because the vehicles are so light. With automated passive switching, a pair of ET3 tubes can exceed the capacity of a 32 lane freeway. ET3 can be built for 1/10th the cost of High Speed Rail, or 1/4th the cost of a freeway.
Science fiction fans well remember this idea from works like Robert Heinlein's Double Star (see vacutubes and bounce tubes).
However, the basic idea is actually 200 years old this year! George Medhurst, a mechanical engineer born in 1759, had the same idea.
Here is the relevant bit from Medhurst's 1812 document Calculations and remarks tending to prove the practicability ... of a plan for the rapid conveyance of goods and passengers upon an iron road through a tube of 30 feet in area, by the power and velocity of air.
(Medhurst's 1812 document)
Medhurst's idea was never put into practice. However, pneumatic tube systems have been used for transporting small packages or paperwork since 1836; they were invented by the brilliant Scottish engineer and inventor William Murdoch.
From ET3 via Kurzweil AI; thanks to Moira for the tip on this story.
Scroll down for more stories in the same category. (Story submitted 4/3/2012)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 1 )
Related News Stories -
Musk Tweets A Boring Tunnel Pic
'We hit the sub-basement and went at once to the express tubes...' - Robert Heinlein, 1956.
Tesla Electric Automatobus Prototype Spotted?
Those buses need to feed on something.
easyJet Short-Haul Electric Jets
Have a little faith, will you? They're working on it.
Hyperloop One Video Shows It Works!
'Complete evacuation of the interior of the tubes [and] a wave that provides the new propulsive energy for the cars...' Hard Vincent, 1929.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
A 'Genuine Nanorobotic Production Factory'
'Microscopic machinery, smaller than ants, smaller than pins, working energetically, purposefully - constructing something...'
Neuromorphic Computer Offers Non-von Neumann Architecture
Fires faster than brain at 1/10K energy.
Evorus Your Crowd-Powered Conversational Assistant
'...the DS [Daily Schedule] was suddenly transformed into a valued confidante.'
Mealworms Food Of The Future
Get your grubs on.
Alibaba's AI May Read Better Than You
'Mike ... could accept other languages and was doing technical translating - and reading endlessly.'
Musk's Boring Flamethrower
'Skeletons in tatters. Burned by a flesh gun'
Humanity Star LEO Advertisement?
'Everyone has noticed those enormous advertisements...'
Nissan ProPILOT Slippers Are Self-Parking, Autonomous
Beyond science and fiction.
Atomristors - Atomic Memristors - Using Thin Nanomaterials
'I could almost feel those little tunnel junction neuristors working, forming their own interconnections as I operated it.'
Bigelow Prepares Inflatable Lunar Hotel
'Suddenly, hitherto unheard-of sums of money became available for investment in civilian orbital stations.'
Drunk Driver Of Tesla Claims Autopilot Was In Charge
'Mr. Garden, you are in no condition to drive.'
Medical Exoskeleton From Cyberdyne Gets FDA Approval
It's been a long road for HAL-5; I started writing about it in 2005.
Fungi-Infused Concrete Repairs Itself
'I noticed that curious mottled knots were forming, indicating where the room had been strained and healed faultily.'
Shiftwear Display Shoes
'He unlaced her shoe and glanced at its readout.'
NASA SEXTANT First With X-Ray Nav In Space
'You need at least four beacons for an accurate fix.'
GM Introduces Cruise AV With No Steering Wheel
'How about the steering wheel?' ... 'I do not need one.'
More SF in the News Stories
More Beyond Technovelgy science news stories