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High Speed Travelator
Anonymous Award writes "Remember those old Isaac Asimov tales of cities of the future, where everybody walked along on moving sidewalks, sometimes clear across a country? Today's airport travelators have always been disappointingly pale imitations of these, but now in
Paris we may be seeing the
true birth of this wonderfully dangerous mode of mass transportation. Its
already as fast as a bus, but when they can crank them up to motorway speeds...
well, lets just say this may have a better chance of having cities designed
around it than certain other recent innovations."
When it gets up to a certain speed, the wind resistance against your body will be greater than the friction of the belt against your feet, and you will cease to move forward...
See also The Roads Must Roll; Robert Heinlein's book based upon moving roads and what happens when the guys who maintain them go on strike ...
Imagine getting a pants leg caught in one of these people gobblers.
As mentioned in the article, the most difficult issue is the transition from moving on the walkway and moving on stationary ground.
It seems to me the best solution to this is to have "lanes" in the walkway. The far left lane would move at the maximum speed, whereas successive lanes to the right would be decelerated. When exits were reached, you could easily step to the right to get to a lower speed; the transition between 9km/h and 6km/h is still a transition, but its less than 9km/h to 0km/h.
"Stumble before you crawl"
Am I the only one who would be embarrassed to use this simply by virtue of its name?
"How are you getting there?"
"Oh, I'm taking the travelator."
"...."
The coolest voice ever.
I read this this morning on the BBC and immediately booked a weekend in Paris for myself and my beloved - hey its summer, the flights were under 200 sterling return and I cant wait to see her fall on her arse as we get on this thing!
I'm just hoping they dont stop you taking skateboards onto this thing!
US personal injury lawyers are already lobbying to bring this to the USA.
Say, whats the bandwidth of one of these if you can stack boxes of DVD-RW on one end and take them off the other.
Julian.
He's been sent back through time on a mission: to move between different locations!
Arnold Schwarzenegger is... "The Travelator".
Jurisprudence Fetishist Gets Off On A Technicality --theonion.com
Today: The introduction of the travelator eliminates the need for walking.
10 years: Our legs become strange, archaic appendages that surgeons will handily remove for a small fee.
100 years: Our brains float around in little hovering domes.
I want a cobalt blue dome.
The coolest voice ever.
I went Paris for the weekend in March and we went through Montparnasse one day and went on this travelator.
They have guys watching to stop certain people getting on, I have heard they have had to pay out for injuries to some people.
First it accelerates you to 9kph then it is exactly like a normal travelator only much faster.
I loved it.
The only problems are the acceleration and deceleration phases. It's very bumpy. You have to hold on to the rail. If they can fix those aspects these things will start appearing in airports everywhere.
It would seem to me that the sheer number of moving parts in a kilometre or so of walkway must make the chances of frequent failures pretty high compared to other public transport methods. How fault-tolerant is it? Any French Slashdotters able to answer?
Would be interesting to see some schematics.
Thanks for reminding me of the title.
What I remember of the story was that they had this rolling road that spanned the USA from east to west, with lanes that went faster and faster. You got on the first slow speed lane, and just walked over to successively faster lanes. The fastest lane was some cool 1950's velocity like 150-300mph.
Some disgruntled workers clipped a lane or two, with expected results.
Nice to see Robert Heinlein's idea making it to reality, now if I could only speak Basic with someone on the moon, or have a farm on Ganymede!
If you got a $100 bill, put your hands up...
better would be organic, something like stomach cillia, where the floor doesn't move the length of the journey, but little tiny bits from in place do- not my idea, something I read once.
the individual elements take turns dropping, moving a tiny bit, pushing up again, and moving you a tiny bit... done repeatedly= ya move down the floor- which doesn't move.
less to break down, and spilled drinks and food (as long as they aren't too hot) are actually welcome...
every day http://en.wikipedia.org/wiki/Special:Random
Teavelators, escalators, revolving doors, they seem natural and intuitive to those who are used to them.
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As an idea, these expressways are a fairly good way of transporting humans. They travel at constant speed, so there should be no obvious difference to the traveller, no matter what the speed is. Of course, in reailty we'd experience air resistence; try sticking your head out of the window on a car going at 70mph. but there may be some way of reducing this in enclosed tunnels, like blowing air at the same velocity as the floor is moving.
In Asimov's vision (I think), the different-speed strips were parallel to each other, not serial like this French version. This meant that you's step to the side to go onto a faster strip, and keep going until you hit the fastest one, which could be several hundred miles an hour. As the differential in speed between the strip you are on and those near is never more than about 1mph, you won't do yourself any serious damage by falling over. see diagram:
---->---7mph->--
---->---8mph->--
---->---9mph->--
etc.
This structure makes them easier to 'network'. The only danger, I suppose, is if a strip breaks then the speed-differential between it and then next one could be massive.
I suppose any serious implementation would use some kind of semiconductor thang to decrease friction, and on a wide scale could be very energy efficient. These things are probably more useful to society than a Segway, but you'd have to design a city around them from the ground up, so I doubt they'll change the way we live just yet.
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Eve Fairbanks says I drive a hybrid!LOL
If you ask me, this was a much better design than the neck-breaking jallopy installed in Montparnasse Station...
They also experimented some 30 years ago with one that was shaped like an integral sign; instead of a rubber plate, there were solid plates which slide sideways at the end, effectively yielding a slower speed but without the jarring hells-on-wheels acceleration.
No! I thought, uh, I thought I'd chauffeur myself this evening. Yes, that's what I thought. How difficult could it be? I'm sure the manual will indicate which lever is the velocitator and which the deceleratrix, hmm?
--
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Here's the really cool (and tricky) part: then you put the motors inside the platforms themselves. Then you don't need miles long rubber belts that can wear out. Just replace them with concrete floors. And to keep people from falling out, add walls. If you add a roof, you can operate them outside, even when it's raining! And for more capacity (to make up for having the seats in the first place), you can use more than one platform stacked together.
I think it would look something like this.
--
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"Open source is evil." - Microsoft
The Loderway Accelerating Walkway, circa 1998, used multiple belts at different speeds. The transitions between belts involved a 5mm drop and small-diameter end rollers, instead of a transition plate. That was probably the simplest solution to the problem. Two systems were installed in Australia, field tests were claimed to be successful, but the manufacturer no longer seems to be around.
NKK (yes, the zipper company) and Mitsubishi have both built prototype "accelerating moving walkways", but neither system seems to have been installed more than once. NKK's system involves expansible plate-type steps that become longer in the high-speed section. The Mitsubishi system works by turning a corner, so that a series of short wide plates transform into a series of long narrow plates. Both of these systems avoid difficult transition points, but are complicated and expensive throughout the whole length of the system. The Loderway and Paris systems have transitions, which adds risk, but the long section is just a plain belt, so the cost of long systems is manageable.
Seems like the French aren't afraid to try techno-miracles -- I haven't seen any metro system as good -- London is close, but alot of inconsistencies. In Paris and France, they aren't afraid to try new things (and the US still
doesn't have any high-speed trains....bunch of cowards -- look big behind
their high-tech weapons -- but when it comes to something socially useful...
forget it. It was a shame the French became the only company to provide
Super-Sonic speeds on jets -- and, of course, what did we do in the US?
We banned their use in US airspace because Elmer's cow might stop producing
milk from the occasional bang. Big woop. We could have had coast-to-coast
in 2-3 hours, but noooOOOOOooo.... any real R&D goes to defense where
they don't have to worry about every soldier who breaks a nail suing them.
Americans are just so damn stupid so often....that and greedy. Grrr.
Why can't the US every take the lead in these areas --- because it's always
private development and unless the private developer can prove profit (minus
real or bogus lawsuits) before it is even tested, it falls dead on the design
floor.
I really thought the Casino bosses in Las Vegas just might pull off the
high speed train idea to L.A. But it's been ages since I heard that idea
float.
Everyone in the US seems to want to have the right to stop progress that can benefit large numbers of people -- like all the poltics with the "Rich"
who can buy their congressmen in Menlo Park/Palo Alto and don't want BART
to go through their town -- we were promised it would circle he Bay and have
been paying sales tax to support it since...when, 1970's? Everything
is politics and self-interest.
Grrrrrr.