J
Jan Panteltje
Guest
On a sunny day (Sat, 22 Jun 2019 01:49:17 -0400) it happened bitrex
<user@example.net> wrote in <AjjPE.27$Gh2.14@fx28.iad>:
Not just for the sake of arguing, but also from a logic viewpoint,
I think the idea of such a train is bad,
Elon Musk has ideas about high speed trains in tunnels,
maglev or not, a vacuum tunnel or better a tunnel kept vacuum
over such a distance is a ridiculous idea, and you would
need escape places along it in case of the extremely likely emergency
as chances are that it will be hit by some nature based event as flooding, earthquakes, or man made events,
are about 100%.
Planes are simple, supersonic planes (Concorde) have been demonstrated to work,
much cheaper, less maintenance, safer,
Some A380 like plane could carry many people, and if you are not in a hurry take a boat,
Planes will only get better.
I did read an article on science.daily about a new high temperature super conductor
and concluded that that is nowhere near usable.
Do we yet know how exactly super conductors work? electron paring I'v read?
There is a 100% better 'something' invented every so often,
starting with the 100% better battery technology every few weeks.
Much hype that looks for a reach-out for funding.
When in the shops, I will look again.
I have a small YBCO super conductor disk, and can cool it to 70 Kelvin, fun.
Storing energy in it? Never thought about it...
But the setup to cool it is enormous compared to that disk size.
The setup to suck vacuum in a thousands of miles long tunnel is prohibitive.
Planes any time.
<user@example.net> wrote in <AjjPE.27$Gh2.14@fx28.iad>:
On 6/22/19 1:26 AM, Rick C wrote:
On Saturday, June 22, 2019 at 1:17:33 AM UTC-4, bitrex wrote:
On 6/21/19 8:47 PM, John Larkin wrote:
One idea was a miles-in-diameter superconducting coil to store energy.
One of those megaprojects where I would say the chances between it and a
transatlantic maglev train from New York to London via Greenland, which
will come first, about 50/50. I'm hoping for the train
It wasn't too long ago Larkin was singing his praises of brainstorming and how valuable the people who will propose extreme
ideas were. When he hears about someone else running a new idea up a flagpole to see who salutes he has to ridicule it.
It didn't sound like ridicule, exactly. It's a pretty old idea I think.
Only really feasible with "room temperature" superconductors given the
size the thing would have to be to store appreciable energy to make it
worth the time, but all sorts of wild stuff would be possible with a
ductile, machinable room-temperature superconducting material it'd be
one of the greatest discoveries in engineering/materials science
history, surely.
Will the maglev train be in a tunnel? Hopefully it will be more comfortable than a plane.
I would expect, even the parts on land would be in a vacuum tunnel of
some kind. To be competitive with air travel times.
The economic advantage would be the enormous number of people a single
train could haul, four trains or so each way per day hauling several
thousand people each would cover pretty much the entire current
transatlantic NYC - London air travel demand
Not just for the sake of arguing, but also from a logic viewpoint,
I think the idea of such a train is bad,
Elon Musk has ideas about high speed trains in tunnels,
maglev or not, a vacuum tunnel or better a tunnel kept vacuum
over such a distance is a ridiculous idea, and you would
need escape places along it in case of the extremely likely emergency
as chances are that it will be hit by some nature based event as flooding, earthquakes, or man made events,
are about 100%.
Planes are simple, supersonic planes (Concorde) have been demonstrated to work,
much cheaper, less maintenance, safer,
Some A380 like plane could carry many people, and if you are not in a hurry take a boat,
Planes will only get better.
I did read an article on science.daily about a new high temperature super conductor
and concluded that that is nowhere near usable.
Do we yet know how exactly super conductors work? electron paring I'v read?
There is a 100% better 'something' invented every so often,
starting with the 100% better battery technology every few weeks.
Much hype that looks for a reach-out for funding.
When in the shops, I will look again.
I have a small YBCO super conductor disk, and can cool it to 70 Kelvin, fun.
Storing energy in it? Never thought about it...
But the setup to cool it is enormous compared to that disk size.
The setup to suck vacuum in a thousands of miles long tunnel is prohibitive.
Planes any time.