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(Big Think)   Pick your Hyperloop poison: unacceptably slow speeds or unfeasible costs. The limits of human tolerance ensures you won't avoid both   (bigthink.com) divider line
    More: Awkward, Transrapid, High-speed rail, Shinkansen, Velocity, Speed, Elon Musk's Hyperloop, Miles per hour, Interstate Highway System  
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478 clicks; posted to STEM » on 26 May 2022 at 8:31 AM (18 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



18 Comments     (+0 »)
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2022-05-26 10:24:21 AM  
Elon Musk's proposed Hyperloop is all smoke and mirrors

You could also remove "proposed Hyperloop".
 
2022-05-26 10:26:46 AM  
the problem with hyperloop is you can build transportation infrastructure thats "good enough" really simply.  its called roads. they have lots of problems, tradeoffs, and safety concerns.  but they mostly work.

something like hyperloop to make it BETTER than good enough you have to be willing to absorb huge overhead costs, raze existing structures and landscapes for right of way, and spend huge amounts of ongoing money in maintenance.  and noone is willing to do that.  but if you dont do that then the scaled back version you get is the same or worse than the roads - but still costs more than them.
 
2022-05-26 12:10:28 PM  

oopsboom: the problem with hyperloop is you can build transportation infrastructure thats "good enough" really simply.  its called roads. they have lots of problems, tradeoffs, and safety concerns.  but they mostly work.

something like hyperloop to make it BETTER than good enough you have to be willing to absorb huge overhead costs, raze existing structures and landscapes for right of way, and spend huge amounts of ongoing money in maintenance.  and noone is willing to do that.  but if you dont do that then the scaled back version you get is the same or worse than the roads - but still costs more than them.


Ride a Japanese railway system (even better, the Shinkansen), and your definition of "good enough" will change immediately.  More roads shouldn't be the focus here, we've already got enough cars.  Lay our own track, tell the freight carriers to fark off, and do this right.
 
2022-05-26 12:12:34 PM  
One problem with hyperloop that I never see addressed in articles like this is the machinery required to pump the air out of the hyperloop tunnel. How many millions of cubic feed of air would have to be moved and how quickly? Where will those machines be located? And how much extra energy production will these machines need in order to operate at scale?

Best option is to not even worry about evacuating the tunnel and just make the entire front of the carriage an intake for the jet propulsion system. Then the speed is limited only by how fast air can be sucked in at the front as opposed to how fast it can be pushed out the back. But then the carriage would need its own onboard fuel supply. It would be essentially a jet plane blasting through a tunnel instead of through the stratosphere.
 
2022-05-26 12:56:47 PM  
Ohhhhhhh, nice dilemma for the Farkers who are Musk haters AND Ethan Siegel haters.
i.kym-cdn.comView Full Size
 
2022-05-26 1:13:43 PM  
Good, fast, cheap -- pick any two.
 
2022-05-26 1:15:07 PM  

KRSESQ: One problem with hyperloop that I never see addressed in articles like this is the machinery required to pump the air out of the hyperloop tunnel. How many millions of cubic feed of air would have to be moved and how quickly? Where will those machines be located? And how much extra energy production will these machines need in order to operate at scale?

Best option is to not even worry about evacuating the tunnel and just make the entire front of the carriage an intake for the jet propulsion system. Then the speed is limited only by how fast air can be sucked in at the front as opposed to how fast it can be pushed out the back. But then the carriage would need its own onboard fuel supply. It would be essentially a jet plane blasting through a tunnel instead of through the stratosphere.


Oh good, just meters away from a jet engine in an enclosed hardened tunnel.  I'm sure everyone's going to arrive at their intended destination with totally intact hearing.

Also who's going to fix the myriad of leaks, both water and air?  You're potentially talking about thousands of miles of tunnels to traverse, and if it's underground there's probably only one way to get to the leak.
 
2022-05-26 2:00:31 PM  
pbs.twimg.comView Full Size
 
2022-05-26 2:18:02 PM  
How about neither as it is a fundamentally flawed concept. A simple subway is better.
 
2022-05-26 2:28:02 PM  
I would never be brain damaged enough to pick hypershiat in the first place

It will never be better than a subway, and the only people brain damaged enough to think it could be good are sucking shiat right out of elons ass
 
2022-05-26 2:47:27 PM  

lifeslammer: It will never be better than a subway, and the only people brain damaged enough to think it could be good are sucking shiat right out of elons ass


Don't knock it until you try it.
 
2022-05-26 3:20:20 PM  
I think this is the first step into admitting this is possibly the most stupid idea ever floated. And gradually there will be enough media traction that Elon and Richard will be able to walk the idea back without losing too much of whats left of their faces.

C'mon Thunderfoot theres blood in the water.
 
2022-05-26 5:04:21 PM  

oopsboom: raze existing structures


KRSESQ: pump the air out of the hyperloop tunnel


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Start with a place where there are very few existing structures.

Start with a place where the atmospheric pressure is very low.

If dumbass Terran municipal governments want to fund the early-stage R&D for a technology that was never designed for Earth, let them.
 
2022-05-26 7:41:24 PM  
KRSESQ:

The problem with hyperloop is Elon musk is a con man bro who just throws crazy stuff out till someone pays him for it.

Bullet trains run above ground on closed tracks and are more than fast, safe, and reliable enough.  we don't need tubes, and even if we did, I like futurama, I wouldn't trust elon musk to build them.
 
2022-05-26 8:25:18 PM  
So far it's physically impossible to build. Vacuum systems that large are currently unfeasible. And besides that there are a dozen more unsolved engineering issues.
 
2022-05-26 8:45:03 PM  

Russ1642: So far it's physically impossible to build. Vacuum systems that large are currently unfeasible. And besides that there are a dozen more unsolved engineering issues.


You mean the 'lon was trying to con people into paying for him to "develop"'an impractical solution to a very solved problem? That seems out of character
 
2022-05-26 8:45:07 PM  
Maybe a bad idea. Probably a bad idea.

But ideas are cool, and good for humanity.

Not gonna hate. (Yes Elon is a tool, but so is pretty much everyone.)
 
2022-05-27 4:50:55 AM  

SergeantObvious: Maybe a bad idea. Probably a bad idea.

But ideas are cool, and good for humanity.

Not gonna hate. (Yes Elon is a tool, but so is pretty much everyone.)


Quite the contrary, there are a lot of ideas that are unquestionably bad for humans.
 
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