General > General Technical Chat
The Hyperloop: BUSTED
mtdoc:
--- Quote from: stj on January 15, 2018, 10:58:23 pm ---i said it before, but musk is just a subsidy hunting fraud(or maybe a front??).
https://www.rand.org/pubs/papers/P4874.html
--- End quote ---
You’re in the wrong thread. Here’s the Musk hate thread
Musk is not financially involved with the various hyperloop companies.
nctnico:
Since some revived this old thread I watched the video in the first post. I find it cringeworthy. Commercial airliners are made of aluminium composite material and they deal with similar pressures safely so why is that suddenly a problem for the hyperloop? Also the expansion problem isn't there because they already solved that with oil pipelines. The same goes with pressurisation in case of a breach. For example: remote controlled inlet valves can be installed do a controlled pressurisation of the rest of the tube.
If the maker of the video lived 200-ish years ago he'd probably made a similar video about the dangers of steam trains.
Sure a hyperloop is complicated but the rewards can be very high. A lot of energy needed to transport something is wasted on friction with air (dominant at high speeds) and road surface. Lower the friction and the transport costs go down. So the real question is whether the resources and energy needed to build and operate a hyperloop are worth the energy savings. And remember: you don't need to transport people perse.
EEVblog:
--- Quote from: nctnico on January 16, 2018, 10:10:13 am ---Since some revived this old thread I watched the video in the first post. I find it cringeworthy. Commercial airliners are made of aluminium composite material and they deal with similar pressures safely so why is that suddenly a problem for the hyperloop?
--- End quote ---
I'm not a mechanical engineer, yet I can think of many show-stopper problems and why this comparison with planes is not meaningful.
nctnico:
--- Quote from: EEVblog on January 16, 2018, 10:36:55 am ---
--- Quote from: nctnico on January 16, 2018, 10:10:13 am ---Since some revived this old thread I watched the video in the first post. I find it cringeworthy. Commercial airliners are made of aluminium composite material and they deal with similar pressures safely so why is that suddenly a problem for the hyperloop?
--- End quote ---
I'm not a mechanical engineer, yet I can think of many show-stopper problems and why this comparison with planes is not meaningful.
--- End quote ---
The airplane is just an example of a pressure vessel made as light as possible and yet it withstands similar pressure differences like the hyperloop is supposed to do. Actually an oil or gas pipeline is pretty much comparable to the build scale of a hyperloop tube (and oil and gas pipeline use much higher pressures). It is not like they are building something completely new. For once don't ignore the fact a lot of very smart people are working on building hyperloops allover the world and have working prototypes. Now it all comes down to whether it makes sense economically or not (which intrinsically means getting it safe to operate).
orion242:
How are you getting up to his speeds if you deal with expansion like oil pipelines as you suggest?? Gonna be one wild as hell ride!
https://www.quora.com/Why-do-oil-pipelines-that-transfer-oil-long-distances-run-in-a-zigzag-manner
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