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| The Hyperloop: BUSTED |
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| mtdoc:
--- Quote from: EEVblog on January 20, 2018, 01:18:49 am --- --- Quote from: mtdoc on January 20, 2018, 12:39:44 am ---Very good point. Even if the hyperloop is never realized as a large scale public transport project (as I suspect will be the case due to financial and political but not technical reasons) --- End quote --- I'm happy to categorically state that practical realities will kill it, even if the financial and political will are there. --- End quote --- You need to be more specific about what you mean by "practical realities". In my view the financial and political will are the major practical realities. |
| amspire:
--- Quote from: mtdoc on January 20, 2018, 05:09:45 am ---You need to be more specific about what you mean by "practical realities". In my view the financial and political will are the major practical realities. --- End quote --- Political will may last one Hyperloop or two. It is not going to build the loop around Europe and the Baltic countries. It is not going to build massive Hyperloop networks into cities. It is not going to build big networks of container Hyperloops from major ports. The only way complete networks will be built is if it is practical. If it is not practical, it cannot be financially viable no matter what the politics. Even at this stage when no Hyperloop exists, they are only saying it will be a little cheaper then high speed rail. I guess that means it will more expensive then truck or freight train. Some Hyperloops may be built, but there is no guarantee that supersonic speeds will even be safe. It may be the safe speed is under 200mph. |
| EEVblog:
--- Quote from: mtdoc on January 20, 2018, 05:09:45 am --- --- Quote from: EEVblog on January 20, 2018, 01:18:49 am --- --- Quote from: mtdoc on January 20, 2018, 12:39:44 am ---Very good point. Even if the hyperloop is never realized as a large scale public transport project (as I suspect will be the case due to financial and political but not technical reasons) --- End quote --- I'm happy to categorically state that practical realities will kill it, even if the financial and political will are there. --- End quote --- You need to be more specific about what you mean by "practical realities". --- End quote --- Sure, the vacuum part. If "HyperLoop" becomes a reality then it will not involve the vacuum part as has been, dare I say it, hyped. Make no mistake, the entire premise of the Hyperloop concept is based on the vacuum to lower to air resistance and lower the maglev power. It has no other "innovation". |
| nctnico:
--- Quote from: EEVblog on January 20, 2018, 07:56:47 am --- --- Quote from: mtdoc on January 20, 2018, 05:09:45 am --- --- Quote from: EEVblog on January 20, 2018, 01:18:49 am --- --- Quote from: mtdoc on January 20, 2018, 12:39:44 am ---Very good point. Even if the hyperloop is never realized as a large scale public transport project (as I suspect will be the case due to financial and political but not technical reasons) --- End quote --- I'm happy to categorically state that practical realities will kill it, even if the financial and political will are there. --- End quote --- You need to be more specific about what you mean by "practical realities". --- End quote --- Sure, the vacuum part. If "HyperLoop" becomes a reality then it will not involve the vacuum part as has been, dare I say it, hyped. Make no mistake, the entire premise of the Hyperloop concept is based on the vacuum to lower to air resistance and lower the maglev power. It has no other "innovation". --- End quote --- First of all you have to define vacuum when it comes to the hyperloop. The amount of energy you can save depends linear on the density of the gas you are travelling through. So at 1/10 of the atmospheric pressure you save 10 times the energy. Some people may not call that a vacuum though. However in general IMHO you'd do better to take a more objective approach rather than being the umpteenth armchair nay-sayer. Going through the technical challenges and trying to find the economic angle without prejudice/judgement will result in a much more informative video and not deteriorate your credibility. After all there are things you don't know about a project because they are kept secret for competitive reasons. It is good to be critical about things but when a lot of smart people + lots of money are involved in a project then it is better to watch and learn. For example: when Google announced Android as a Java based mobile device platform I was convinced it could never work because Java applications where typically such a pile of buggy crap (also due to Sun's implementation). Later on I learned Google already figured that out for themselves and was going to write their own Java engine from scratch. The rest is history. |
| IanMacdonald:
A major issue I see is that operating in a vacuum involves many of the safety issues of operating in space. There is enough experience of space operations to know the ins and outs of this (suit required for the out part!) and that there are quite a few gotchas that can lead to a fatal accident if due care is not taken. If the train springs a leak, people start asphyxiating rather fast. Oxygen masks are also no use in a complete vacuum; about a fifth of sea level pressure is the lowest they will sustain life in, and that won't be enough vacuum for the hyperloop. This is probably the biggest issue, since it means that any small prang with a train that cracks the hull means everyone on board dead in a few minutes. |
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