Science Fiction
Dictionary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
 |
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 |
Would
you like to contribute a story tip?
It's easy:
Get the URL of the story, and the related sf author, and add
it here.
Comment/Join discussion ( 1 )
Related News Stories - (" Transportation ")
SpaceX Rocket Shuttle Point-To-Point On Earth
'He came to as the ship went into free flight, arching in a high parabola over the plains...' - Robert Heinlein, 1951.
CORLEO Robotic Horse Concept Looks Ready To Ride
Imagine digging your heels in to a steam horse!
Futuristic Transit Elevated Bus Never Really Worked
It was worth a try!
Japan Automated Cargo Transport
'It was not a roadway at all, as Graham understood such things...' - HG Wells, 1899.
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.
Science Fiction
Timeline
1600-1899
1900-1939
1940's 1950's
1960's 1970's
1980's 1990's
2000's 2010's
Current News
The Zapata Air Scooter Would Be Great In A Science Fiction Story
'Betty's slapdash style.'
Thermostabilized Wet Meat Product (NASA Prototype)
There are no orbiting Michelin stars. Yet.
Could Crystal Batteries Generate Power For Centuries?
'Power could be compressed thus into an inch-square cube of what looked like blue-white ice'
India Ponders Always-On Smartphone Location Tracking
'It is necessary... for your own protection.'
Amazon Will Send You Heinlein's Knockdown Cabin
'It's so light that you can set it up in five minutes by yourself...'
Is It Time To Forbid Human Driving?
'Heavy penalties... were to be applied to any one found driving manually-controlled machines.'
Replace The Smartphone With A Connected Edge Node For AI Inference
'Buy a Little Dingbat... electropen, wrist watch, pocketphone, pocket radio, billfold ... all in one.'
Artificial Skin For Robots Is Coming Right Along
'... an elastic, tinted material that had all the feel and appearance of human flesh and epidermis.'
Robot Guard Dog On Duty
I might also be thinking of K-9 from Doctor Who.
Wearable Artificial Fabric Muscles
'It is remarkable that the long leverages of their machines are in most cases actuated by a sort of sham musculature...'
BrainBridge Concept Transplant Of Human Head Proposed
'Briquet’s head seemed to think that to find and attach a new body to her head was as easy as to fit and sew a new dress.'
Google's Nano Banana Pro Presents Handwritten Math Solutions
'...copy was turned out in a charming and entirely feminine handwriting.'
Edible Meat-Like Fungus Like Barbara Hambly's Slunch?
'It was almost unheard of for slunch to spread that fast...'
Sunday Robotics 'Memo' Bot Has Unique Training Glove
'He then started hand movements of definite pattern...'
Woman Marries Computer, Vonnegut's Dream Comes True
'Men are made of protoplasm... Lasts forever.'
Natural Gait With Prosthetic Connected To Nervous System
'The leg was to function, in a way, as a servo-mechanism operated by Larry’s brain...'
