General > General Technical Chat
The Hyperloop: BUSTED
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boffin:

--- Quote from: blueskull on July 25, 2016, 04:00:30 am ---The fallen one, if my memory serves me correctly, is an AirFrance one. The poor thing was hit by a debris coming from a poorly maintained PanAm.
The ultimate reason of Concorde being phased out, IMHO, is solely for cost reasons. By that time, new generation B767 and B777 have astonishing fuel efficiency and can also offer smooth traveling experience.

--- End quote ---

Debris from a GE CF6 as dropped by a Continental DC-10, not PanAm.


Maxlor:
Unconvincing bust. He simplifies things quite a bit, takes several cheap shots, and doesn't allow for any obvious or less obvious solutions to the fatal problems he mentions. I like Dave's busting videos better, they seem to be more solid.
German_EE:
Yes, I can see that Solar Roadways are a silly idea, but when it comes to the Hyperloop I'm prepared to sit this one out for a while and see if anything realistic is produced. So, here's a target off the top of my head

A 5 Km Hyperloop test track within the next five years.

If I don't see that then I'll just write the idea off, but Musk has been associated with two ideas so far which people said would never work and, surprise surprise, we now have viable electric cars and reusable rockets.

TheAmmoniacal:

--- Quote from: Maxlor on July 25, 2016, 03:24:52 pm ---Unconvincing bust. He simplifies things quite a bit, takes several cheap shots, and doesn't allow for any obvious or less obvious solutions to the fatal problems he mentions. I like Dave's busting videos better, they seem to be more solid.

--- End quote ---

That's because he's not debunking the concept - but the product Hyperloop as presented by the company. All their claims are obviously wrong, and he convincingly shows this.

You can make the Hyperloop, but the technical challenges are equivalent to or even bigger than landing on the moon (imho) - you can't do this on a $25 a ticket (or whatever the estimated price per ticket was). In fact, it will never be a financially viable competitor to existing ways of transport.
rstofer:
I wouldn't have thought it possible for a launch vehicle to land in an upright orientation but, somehow, it's happening.
In steam pipes, thermal expansion is taken up in S bends of the piping.  Somehow, I think that problem is solvable.  How about circulating liquid nitrogen through the 'rail' or whatever.  OK, nitrogen might be a poor choice but there must be some way to keep expansion under control.

The rest is just details!
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