General > General Technical Chat

The Hyperloop: BUSTED

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David Hess:

--- Quote from: edavid on August 03, 2017, 09:37:50 pm ---
--- Quote from: David Hess on August 03, 2017, 04:48:09 pm ---The economics really bother me.  Is this suppose to be more cost effective than a concrete channel operating at atmospheric pressure or existing fast trains?
--- End quote ---

It was supposed to be more cost effective than the existing California High Speed Rail project.  That's the whole reason for the proposal.
--- End quote ---

California is not known for fiscally responsible rail projects.  When they built BART, they selected a non-standard track gauge ensuring higher costs and then things got worse when they later needed replacement stock.

Alex Eisenhut:

--- Quote from: brucehoult on August 03, 2017, 08:17:07 pm ---
3000 km/h completely fails to pass the giggle test.

--- End quote ---

What's the cargo capacity of this:



PRO: Can use existing facilities and fuel, has green exhaust on ignition (https://en.wikipedia.org/wiki/Triethylborane)
CON: None that I can see

If there was a need for Mach 3 cargo, it could have been done half a century ago.

Besides, with 3D printers having "changed the game" (how many times now?), I thought we could fabricate anything on demand...

glarsson:

--- Quote from: Alex Eisenhut on August 04, 2017, 01:23:27 am ---PRO: Can use existing facilities and fuel, has green exhaust on ignition
--- End quote ---
No.
CON: Must use a special fuel.
CON: Requires special facilities, e.g. start with less than full load of fuel and fill up after start from air tanker.
CON: Cargo space designed for a few special cargo options, not for standard containers.

boffin:

--- Quote from: Alex Eisenhut on August 04, 2017, 01:23:27 am ---PRO: Can use existing facilities and fuel, has green exhaust on ignition (https://en.wikipedia.org/wiki/Triethylborane)

--- End quote ---

Actually
CON: Can't use existing facilities and fuel

it burned a really weird JP-7 mixture.

Alex Eisenhut:
Well, OK, if you want to be picky about it... You also need two big block Hemis to start the thing, but I don't see that as a CON either.  :)

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