ytreibiLeurT The original article clearly states that vacuums are impractical, the hyperloop idea does not require a vacuum, just a low pressure solution. Exerpt From Hyperloop Alpha (the initial proposal) "The pressure of air in Hyperloop is about 1/6 the pressure of the atmosphere on Mars. This is an operating pressure of 100 Pascals, which reduces the drag force of the air by 1,000 times relative to sea level conditions and would be equivalent to flying above 150,000 feet altitude. A hard vacuum is avoided as vacuums are expensive and difficult to maintain compared with low pressure solutions." In fact, the original idea for a hyperloop uses air bearings, which is impossible in a vacuum. Is it too much to ask that you read the thing you're trying to debunk?
Raymond Corrigan well the pressure of the tube would be so low to create a "frictionless" tube would be essentialy a vacuum, also space is not a vacuum, and what if the tube depressurises and all the air gets let in, then you would have to find the hole that caused it and fix it then you would have to pump out most of the air in a tube that stretches from san Francisco to los Angeles wich would take days, and be very very very expensive.
Msgreenred99 I can't believe I have to say this twice. Read the original paper before you try to debunk it. Your comment is debunking a plan that nobody is proposing. ----- "frictionless" From the original paper: "The expected pressure inside the tube will be maintained around 100 Pa, which is about 1/6 the pressure on Mars. This low pressure minimizes the drag force on the capsule while maintaining the relative ease of pumping out the air from the tube." Nobody is talking about creating a frictionless environment or a vacuum. Scientific vacuum tubes operate at pressures about 1,000,000,000 times less than this. This is not 'essentially a vacuum'. ----- "What if the tube depressurises and all the air gets let in" From the original paper: "The problem with this approach is that it is incredibly hard to maintain a near vacuum in a room, let alone 700 miles (round trip) of large tube with dozens of station gateways and thousands of pods entering and exiting every day. All it takes is one leaky seal or a small crack somewhere in the hundreds of miles of tube and the whole system stops working. However, a low pressure (vs. almost no pressure) system set to a level where standard commercial pumps could easily overcome an air leak and the transport pods could handle variable air density would be inherently robust." The paper then shows a graph of the pumping ability of commercially available pumps and gives a cost estimate of under $10,000,000 for enough pumps to continue operations with multiple leaks on a 700 mile tube. See chapter 4.2, Figure 13. "Typical vacuum pump speed for functional pressure range." ----- "have to pump out most of the air in a tube that stretches from san Francisco to los Angeles wich would take days, and be very very very expensive." I would love to see your calculations for this taking days. I did some back of the envelope calculations, assuming 1 big pump every 7 miles working at full capacity, and came to 1.5 hours. The test track depressurises in a bit under 30 minutes and is 0.75 miles long, so that suggests it would take 4 hours in real world conditions with one of whatever pump they're using every 7 miles. Even then, when airliners come in at 50-200 million a pop, even if we have to double the vacuum pump budget to 20 million, that certainly doesn't scream impossible.
+Matty fuckin shit, stop using a fucking PRESSURE TANK to analyze what happens in a VACUUM TANK, two completely different things, a pressure tank isn't made to sustain vacuum, it's reinforced in the outside, a vacuumm tank is reinforced on the inside, if you shoot a pressure tank in vacuum it WILL implode, that's not the case with vacuum tubes, you can shoot a vacuum tube and all it will do is to loose pressure.
But you would have air in the tube. That poses a danged to a train moving 700 mph. It can't go 700 mph where there's air. So when there is air, you have a catastrophe. The maintenance of this would be a nightmare. And what if the train gets depressurized? You'd probably suffocate. What if the power goes down and the train stop in the middle of nowhere? How much time until you're out of oxygen in the train? You can't go out, there's vacuum out there. There's just so many things that can go wrong.
3:37, a jet-propulsion team lead who knew very little about Thermodynamics, lol. Truly innovative. Just like the head surgeon who's only experience was as a kitchenhand dicing tomatoes.
I'm still trying to figure out how Hyperloop could ever be revolutionary. It's literally just a mag-lev train in a vacuum tube. Sure, it goes somewhat faster, but the trade-off is a much longer wait time while the vacuum is restored and a much higher risk of instant death if something goes wrong.
I almost feel bad for the students there!! They spent so much time and effort in a technology that was OBSOLETE years ago due to high speed trains like the shinkansen in Japan, the TGV in Europe or the AVE in Spain. But then again, kids there don't care if it works or if it's commercially viable, all they care about is passing that class with good grades.
@Jeroen Bollen Incorrectly worded. TF pointed out an issue, which doesn't mean that HE HAS TO SOLVE THE ISSUE TO HAVE HIS CRITICISM ACKNOWLEDGED. In what world does pointing out a flaw require you to fix said flaw? lol Thunderf00t isn't perfect but he's way more credible than uneducated people trying to excuse blatant flaws in an idea. A terrible idea.
except hyperloop isn't a solid object occupying the entire tube, hyperloop is larger and thus has much more inertia, and the distance from a vacuum failure to the nearest pod is likely much further
There really is no solution to the problems. The hyperloop tube is extremely vulnerable and if you make it out of something durable enough like whatever they make tanks out of, it becomes cripplingly expensive. Here on Earth, airplanes are probably the best people transportation. They have no tracks that can be disrupted it require expensive maintenance, they go quite fast, they are extremely safe as well. If we didn't have the stupid and unnecessary TSA, boarding would be a breeze. The hyperloop requires pressurization to board and exit which makes it functionally slower than aircraft. Self driving cars and maglevs are probably the ultimate surface transportation for why planet because they don't rely on the atmosphere to work.
So if you use pressurized tanks to give you forward momentum; I ask how do you scale that up for a trip to San Francisco from Los Angeles? Plus releasing that much gas in a vacuum tube will dump your pumps and trash your internal environment.
Even though if you do have pressurized tanks, it can give the high vacuum of the tube away and can potentially creating resistance for other hyper loop trains
The hyperloop is impractical from an economic and logistical standpoint. Even if you can get it to be structurally sound, it will cost too much to maintain. While being theoretically possible, there are far more economical and logistically valid modes of travel.
+KappaW : He might have an annoying habit of saying things several times, and he might also have a pretty advanced superiority complex, but he actually *is* a real scientist who works with nuclear reactors. If you feel comfortable with dismissing his reasoning out of hand, you either have to have some pretty good evidence behind you or be ok with your own vastly inflated ego. FWIW, I had very big problems with both Hyperloop and Solar Roadways from the outset - before TF said a word publicly. They just don't meet basic sanity checks as stated. In Hyperloop's case, my issues could be solved but the solutions are not trivial, and the issues have not yet even been acknowledged let alone addressed. Until such time as the issues of airlocks for loading and unloading and containment issues receive some treatment beside pretending they don't exist, this project is far more of a pie-in-the-sky event than Star Citizen's worst critics think that is.
In the ultimate display of teamwork, five dudes pushed a heavy thing on wheels for half a mile. That's the ultimate display of teamwork? The bar has really lowered...
Why do all the "testing pods" have wheels when the "vision" uses magnets to stay afloat to reduce friction? if there are wheels then vaccum doesnt matter that much because a lot of the friction will come from the wheels...
Seems counterproductive to have a pod based on expelling gas... when the philosophy that underpins the whole concept is a vacuum environment to eliminate friction & drag.
4:30 thats fucking stupid so you can only accelerate for 3 seconds? if both tanks empty 90% of their mass in 3 seconds what do you expect to do the rest of the journey? I know they are prototypes but you should have a design where the acceleration is gradual for the passengers. the average person doesn't want to feel strong G Force. I thought they were going to focus on electromagnetism like shooting a metal object down a railgun but at a gradual speed. they do have floating trains that use magnetism on the tracks, why not combined that technology with the vacuum chamber technology with integrated electromagnets in the tube to propel the pod... idk it just seems obvious
Hi Seeker, unrelated to this video, I have a controversial topic I really hope you can make an episode of: "Does Cough Medicine Work?" If it doesn't, should it be banned? Are there more negative effects than positive benefits.
Milan Duke Thanks a lot. That was very helpful. I was going to suggest antibiotics to a close friend instead of a cough medicine. May be I'll tell him to have more rest instead. He had a history of pneumonia and it cause delirium to him before so I was worried when he decided to not have antibiotics, but instead he wanted to try cough medicine first, even though both were prescript to him by the PR. But I also know that PR just prescript most people with antibiotics. That's why I wanted to ask. And as you said, they don't really do much as a lot of researches have shown. They can even cause more harm.
Taking antibiotics when you have a cold or a flu is very irresponsible. It does not aid, as these are viral infections, not bacterial infections. It aids the creation of superbugs.
DO NOT TAKE ANTIBIOTICS FOR A COLD. I REPEAT DO NOT. this is VERY serious you can literally kill us all if you do this. superbugs are a big problem and some bacteria is coompletely immune already. if we dont stop misusing antibiotics then we return to the dark ages where people can die from common disease.
Clickbait title almost *stopped* me from clicking. Grow up and just write actual professional titles that describe what the video is about. Please. You're better than this.
The badgers pod is literally a CO2 cartridge car. Why did they get the innovation award? Anyways, a rocket car won't work because it's in a vacuum so the rocket will decrease the vacuum over usage. So the more propulsion used the worse the tube as a whole functions.
I guess its like a "participation award" in a running race, one trophy gets paid for, and the best team wins no matter what. Also, if this stuff is the "winner" then what precisely did the losers accomplish? (perhaps the project was incomplete, or got stuck in the tube, or had political graffiti on the nose, or sprayed chemicals on the judges, or wounded a judge with an electrical discharge, or gored the judges with varying protuberances, or exploded into shrapnel, or maybe just remained DOA and ready for burial) ;)
At speeds like that, able or not, you will NOT get private citizens to agree to the use of their personal property for the mostly straight tube that will be required for implimentation in real life. This is why roads and rail often curve and turn around personal property. And, no, eminent domain will not prevail for distances such as these.
Love how they have no footage of it in use working. Seriously, as much as you try to hate Thunderf00t, you have yet to show a working model after all these decades of talk about building one, Eon Musk advertising saying it's possible. yet still can't get it to work. Until then Thunderf00t remains correct. cars and hyperloop had the same amount of time go from the conceived idea to actual use. Cars made it, Hyperloop didn't.
What happens to a human inside the tube?... MMm NASA already knows... Some degree of consciousness will probably be retained for 9 to 11 seconds . In rapid sequence thereafter, paralysis will be followed by generalized convulsions and paralysis once again. During this time, water vapor will form rapidly in the soft tissues and somewhat less rapidly in the venous blood. This evolution of water vapor will cause marked swelling of the body to perhaps twice its normal volume unless it is restrained by a pressure suit. (It has been demonstrated that a properly fitted elastic garment can entirely prevent ebullism at pressures as low as 15 mm Hg absolute [Webb, 1969, 1970].) Heart rate may rise initially, but will fall rapidly thereafter. Arterial blood pressure will also fall over a period of 30 to 60 seconds, while venous pressure rises due to distention of the venous system by gas and vapor. Venous pressure will meet or exceed arterial pressure within one minute. There will be virtually no effective circulation of blood. After an initial rush of gas from the lungs during decompression, gas and water vapor will continue to flow outward through the airways. This continual evaporation of water will cool the mouth and nose to near-freezing temperatures; the remainder of the body will also become cooled, but more slowly. You have about 60-90 seconds from initial exposure to get them back into a re-pressurized environment to have any chance of survival and if their heart stops within that period they are dead.
few questions 1. how much energy will it take to pullout all that gas(air) in the tube per (enter distance of tube here) compared to the energy consumption of something comparable? 2. what happens when there is a failure in the tube? 3. doesn't the propulsion purposed here add more mass (gas) to the tube causing you to need to pull it out again? 4. how are you going to deal with pressurizing/depressurizing the tube every time you pull out its cargo? i understand the idea behind this but i feel as though it will fail. usually we find new ideas from failure of old ones so that's why i don't mind this happening but i still feel we need to stay critical of what we are doing.
well the only problem here is why make a aerodynamics car that travel in near vacuum? ITS HAVE BARLY NO DRAG IN NEAR VACUUM! The only thing that can let the car travel faster is the fuel efficiency and if you travel without wheels, the only thing that can let the car move is using magnet or using air propulsion but the pipe need to constantly pump air out to maintain the pipe near vacuum
Kevin Fernandez So their original idea scrapped? How about making their own highway so they dont need to create a tunnel that cost a lot of money and time. BTW they need to refill the tank to high pressuer every ride.
I have a better question - why vehicle that is suppose to travel in vacuum sealed tunnel destroys vacuum as means of propulsion ? It looks like this contest is done for shit and giggles.
@Khoo Hao Yit - No the original idea is not "scrapped". Even at significantly low pressures inside the tube there will be a pressure wave at high velocity. The shear stress gradient is exponential. As you approach 700mph you're going to require an aerodynamic body to reduce resistance even in a very very thin atmosphere. To be clear, I'm not a proponent of Hyperloop. I think the idea fails for many reasons, but this is not one of them.
This is a super credulous report. The hyperloop pods from the previous year didn't prove anything but failures. There are actual engineering competitions out there where student lead teams excel, the hyperloop competition has not been one of them. The hyperloop is a project with some very big hurdles to get past. Like the fact that a much smaller tube that is only 3/4ths of a mile long costs a huge amount of money. If the pod is run with compressed gas it's going to spoil the vacuum, so no gas propelled pod can ever be part of a working hyperloop system.
It won't run on compressed gas. It will be a maglev in a vacuum tube which for strange reasons its fans think will be cheaper to build than a maglev not in a tube. Fast maglevs have been around a while already and have NOT taken the world by storm.
The Hyperloop does not work now. 1:How do you want to make a Vacuum chamber that large? 2:How do you want to get a the passengers in the tube without getting them blackout? 3:Accelerating with Gas in a Vacuum tube??? This were just a few things what they should thing about...the concept is great but there needs to be a lod of Engeneering done.
Simon Andersson Some of those concerns, in all seriousness, makes the stupid assumption technology will not get better. Which it will, that is a given with progress. But it is a flawed video, to put it nicely.
Well, he's a research scientist who shows his calculations in his videos, so other people can correct him if they can. He's put up a video once, where he admits his miscalculations and does new ones, while keeping the video with the faulty calculation open to be viewed
Winds_Of _Night There are girls in all teams. But it's irrelevant to me, people are people. If they're all men, I'm also happy; if they're all girl, I'm also happy; if they're all transsexuals, I'm happy. Gender is not the point here.
They're releasing gas from a container? It's a vacuum tube you'd need to pump it all back out and re pressurise the container probably a few times during each trip.
people always forget the 2 limits to engineering the physical limit and the economical limit no one in the world has enough money to security to keep people from destroying the thing
same was said about transrapid, but germny developed it about 48 years ago (...and sold the concept to china -.-) and basically the hyperloop is just a transrapid in a low pressure loop
Basically you don't understand physics, economics, how long you will live, or logical fallacies. "The same was said about such and such." is a logical fallacy. The fact that someone said something isn't possible, which then became possible, doesn't mean a hyperloop possible. 1. There are technological hurdles that can't be over come with today's technology and materials and we will be dead and gone before this is possible. 2. Even if the tech and materials were available right now, the Earth will move an inch or 2 causing catastrophic failure. 3 and 4. Long range hyperloop systems (as proposed) will become too costly to maintain and and it will be far more dangerous than current modes of travel. Check back with me when I'm wrong. Until then keep dreaming
Bill Schlafly it may not, but if everyone thought like you then in the far future when everyone died and their children grew up, there would be nothing to finish, no innovations. They start and develop it, and eventually it benefits humanity later.
Congrats to them, now they just need to make the Hyperloop actually work (because it doesn't), and open people's eyes to the fact that it's an incredibly unsafe way to travel that will never reach intended speeds without major redesign. And they'll be all set...
Who said anything about thunderfoot? I can't remember the last time I said "hey, you know what would be fun today? Going 700mph in a vacuum tube with walls thinner than the monitor I'm currently watching this video on, I hope nothing bad happens that will cause my internal organs to suddenly become external if I don't suffocate first, or become liquid from a crash at mach 1!". And to top it of, IT DOESNT WORK!!! It took them what, 10 hours to even pump the thing down, and the cars didn't even go 100ft on their own? It's just not viable with the current design. Do your own research before you claim that multiple people (NOT including myself), with more degrees in physics/science than you, are wrong.
+HellishGrin460 in a tank intended to be pressurized, not put under the stress of a vacuum. try vacuum a baloon and see why vacuum behaves differently of pressure. have you wondered that the support in a tank for pressure is in the outside and the support for a vacuum tank it's in the inside.y
So SpaceX look at designs from bright minds, then effectively use it for themselves. Then all the credit goes to Musk upon use/completion of said SpaceX Hyperloop Pods? It's a celebration of science and engineering, but I can't help but see that SpaceX/Elon would take all credit to use the winning pod. Probably not, I guess.
I doubt the winning pod will end up being used. I think they are just hosting this competition to advance the technology they will need to eventually build an actual Hyper Loop.
How are you going to keep the tube from colapsing, and if it does, spat goes the people, also it would take a very long time to de-pressureis and then what if there is a moinor leak In the tube, then all you have is a long expensive tube thrue the dessert that could take mounths to find the hole that de-presurised the tube, then you would have to pump all of the air out of it. That would be expensive, and the project over all would not be cost effective.
small wheels are optimal on high speed trains. That's why you see rollercoasters with big trains with small wheels... wait. That's not right. And as you know. Design is more important than actual engineering. If a bridge looks great, but colapses, you still deserve a prize.
Design cannot be materialized without engineering. Also design can make nice looking bridges as you said but only engineering can make sure they do not fall off. You debunked your statement with your own example.
Karasaph Exonar Do you know that Hyperloop is meant to be Maglev, and they do not have your traditional wheels, and did you compare rollercoasters with a Train son? Besides kneejerk reactors like El Bottoo do not understand that not only were you wrong, but my reply had nothing to do with supporting Hyperloop, the joke is on you, learn to read. I do not think it will work as my comments state below. Maglevs levitate at their higher speeds , but need wheels at lower speeds and that is not because they are like rollercoasters .So no small wheels or roller coasters. Now move on.
Jim well I heard even the emDrive defies the Newtonian law of motion. maybe if we are a bit more open minded regarding science. A thousand years ago, 99.9% of the earth's population thought that the earth was flat but here we are today because of the resilience of some out of the box thinkers. Our knowledge of science is still very little. If black holes and many other mysterious things can exist, so can these.
A A, Alissa Spoons 2.0 Because when I was a kid I thought up the same idea: "a vehicle with less air resistance to overcome would be able to travel faster". Because many people throughout history have had the same idea (it's not exactly complex), and all of them up till now recognised the problem. If your tube gets just a small hole in then a big wave of air is going to travel down the tube (in both directions) pushing everything out of the way; which will likely kill any passengers inside the loop (the entire loop, all the way across the country). What's worse is that if a bit of gravel gets inside the tube and is kicked up by one of the pods it's going to break the tube. And you can't put the tube on the surface (because one point of failure turns the entire thing into scrap metal), so you have to bury it, and then deal with all the issues with tectonics. And you have to deal with the thermal expansion of the tube during the day. The entire idea is a non-starter, and when we have transport options like planes, buses and trains on the market (none of which have these problems and are far less expensive) you start to see that the Hyperloop is a very expensive waste of time, not a revolution.
Pedro Rocha Do you need to test whether putting your hand in a fire will hurt you? No, you know fire hurts because you know what fire is. I know that it's impossible to maintain a vacuum over a large tube because of the various reasons given. There are many obsolete transport technologies (like monorails), and we don't need to try them out more than we already have to know that they don't work as well as other systems. If you have a criticism of our reasoning as to why it won't work then that's fine. But wasting large quantities of money and time that could be better spent on functional technology can't be defended with a simple "you never know unless you try". And Edison was an actual engineer, Musk is a businessman (albeit a prolific one). His skill lies in investment, not in development. I can't imagine how the project has gotten this far without someone on the inside pointing out the obvious flaws.
PlatinumAltaria If air got into the tube it would slow down the pods inside because of air resistance. Air wouldn't keep entering after the pressure is equal to the outside so nothing would be crushed. The tube would probably be equipped with sensors to detect the pressure change and activate the brakes on every pod inside.
Why are the pods built sleek and aerodynamic if they'll be in a vacuum tube? Isn't the whole point of hyperloop to remove air resistance for faster speeds?
It's a near-vacuum, not full vacuum. There is still some air and at high speeds the pod runs into enough air that aerodynamics still come into play. REPLY
There's so many Thunderfoot Fanboys in the comment section. I think the guy with a team of world class scientists to consult would know better than some random person on UA-cam. Plus, a lot of TF's arguments could be applied to planes.
@Viscious Circle - It's not 100% hype or 0% reality. The concept works in principle, and not only on paper. These contests and Hyperloop One are proving it. But there are so many other problems with the idea that it will never be commercialized. I don't mean just engineering challenges like the speed and efficiency of the airlocks, which is a big problem its own. No, I mean practical issues like blocking and switching, how's that supposed to work in an airlock situation? Then there's capacity which would be absurdly low. We're talking maybe 50 - 100 passengers an hour due to the small size of the vehicles and widely separated dispatch times. Other things like emergency egress... how is that supposed to work? I can't even envision a hypothetical solution for it. These are non-starters for the commercial application of Hyperloop. But the idea is certainly not as useless as you claim because not every engineering challenge needs to be commercialized to be considered 'useful'. Teaching in itself is ENORMOUSLY useful! Please be fair in your criticism. If nothing else, Hyperloop is a neat concept, a fun project, and an interesting collection of engineering challenges teaching people things about integrated transport systems that are difficult to experiment with in any other way.
Musk fans are the closed minded ones. They assume everything he says or does is some kind of genius. Start to look at this Hypeloop with an open mind and you soon see that it is going to be very very expensive for no advantage except speed (assuming it can be made to work). Everything else about it is disadvantage.
I personally think this is a pipedream because I have seen what can happen if a vacuum chamber experiences a structural failure while it is under vacuum chamber. It was TERRIFYING but very interesting. It does not explode, it implodes.
Hyperloop is one of the few things by Musk I dont support, Its costly and if one thing goes wrong it has the potential to damage his reputations hurting his goals for space.
my question is...why not use a maglev style propulsion system for the hyperloop? why not take an already understood and tested method and see how it interacts with the hyperloop? would the vacuum reduce friction and allow for faster speeds and more control? wouldn't the maglev also allow for less reliance on gasses and remove the need to refuel the vehicle?
The RWTH Aachen team could have joined this competition and easily won. But we all know it’s a waste of time. Too bad the students from TU Munich are wasting their time
so what happens if for some reason one vehicle needs to stop half way through, either permanent or just for a simple second.. all following need to stop aswell and they need a support team to restart them? I mean, shorting a long trip is good in alot of ways, but putting people in a tiny tube and tell them "we hope it is just for 30 minutes, bring entertainment" and then your stuck there for a couple of hours?
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
>Here's What Happened
What is this? Buzzfeed?
Not much. That's what happened. lol. So yes just like Buzzfeed.
They didn´t mention that the tubes had no vacuum...If they vacuumized the tubes, the vehicle would be toast as well as the passenger.
ytreibiLeurT
The original article clearly states that vacuums are impractical, the hyperloop idea does not require a vacuum, just a low pressure solution.
Exerpt From Hyperloop Alpha (the initial proposal)
"The pressure of air in Hyperloop is about 1/6 the pressure of the atmosphere on Mars. This is an operating pressure of 100 Pascals, which reduces the drag force of the air by 1,000 times relative to sea level conditions and would be equivalent to flying above 150,000 feet altitude. A hard vacuum is avoided as vacuums are expensive and difficult to maintain compared with low pressure solutions."
In fact, the original idea for a hyperloop uses air bearings, which is impossible in a vacuum.
Is it too much to ask that you read the thing you're trying to debunk?
Raymond Corrigan well the pressure of the tube would be so low to create a "frictionless" tube would be essentialy a vacuum, also space is not a vacuum, and what if the tube depressurises and all the air gets let in, then you would have to find the hole that caused it and fix it then you would have to pump out most of the air in a tube that stretches from san Francisco to los Angeles wich would take days, and be very very very expensive.
Msgreenred99
I can't believe I have to say this twice. Read the original paper before you try to debunk it.
Your comment is debunking a plan that nobody is proposing.
-----
"frictionless"
From the original paper:
"The expected pressure inside the tube will be maintained around 100 Pa, which is about 1/6 the pressure on Mars. This low pressure minimizes the drag force on the capsule while maintaining the relative ease of pumping out the air from the tube."
Nobody is talking about creating a frictionless environment or a vacuum. Scientific vacuum tubes operate at pressures about 1,000,000,000 times less than this. This is not 'essentially a vacuum'.
-----
"What if the tube depressurises and all the air gets let in"
From the original paper:
"The problem with this approach is that it is incredibly hard to
maintain a near vacuum in a room, let alone 700 miles (round trip) of large
tube with dozens of station gateways and thousands of pods entering and
exiting every day. All it takes is one leaky seal or a small crack somewhere in
the hundreds of miles of tube and the whole system stops working.
However, a low pressure (vs. almost no pressure) system set to a level where
standard commercial pumps could easily overcome an air leak and the
transport pods could handle variable air density would be inherently robust."
The paper then shows a graph of the pumping ability of commercially available pumps and gives a cost estimate of under $10,000,000 for enough pumps to continue operations with multiple leaks on a 700 mile tube.
See chapter 4.2, Figure 13. "Typical vacuum pump speed for functional pressure range."
-----
"have to pump out most of the air in a tube that stretches from san Francisco to los Angeles wich would take days, and be very very very expensive."
I would love to see your calculations for this taking days. I did some back of the envelope calculations, assuming 1 big pump every 7 miles working at full capacity, and came to 1.5 hours.
The test track depressurises in a bit under 30 minutes and is 0.75 miles long, so that suggests it would take 4 hours in real world conditions with one of whatever pump they're using every 7 miles.
Even then, when airliners come in at 50-200 million a pop, even if we have to double the vacuum pump budget to 20 million, that certainly doesn't scream impossible.
So they're releasing gas from a container into the vacuum tube? Great design.
Wasn't Hyperloop supposed to be a maglev train in vacuum?
BlaQ think about what would happen if one person shot a bullet at the hyperloop, or any other disaster. Death.
I'm with you on that one. It seems too hard to maintain vacuum in the tube for it to be viable in the nearest future.
+Matty fuckin shit, stop using a fucking PRESSURE TANK to analyze what happens in a VACUUM TANK, two completely different things, a pressure tank isn't made to sustain vacuum, it's reinforced in the outside, a vacuumm tank is reinforced on the inside, if you shoot a pressure tank in vacuum it WILL implode, that's not the case with vacuum tubes, you can shoot a vacuum tube and all it will do is to loose pressure.
Matty Uhm, the air would just go through the hole and fill the tube with oxygen, or what do you mean?
But you would have air in the tube. That poses a danged to a train moving 700 mph. It can't go 700 mph where there's air. So when there is air, you have a catastrophe. The maintenance of this would be a nightmare.
And what if the train gets depressurized? You'd probably suffocate.
What if the power goes down and the train stop in the middle of nowhere? How much time until you're out of oxygen in the train? You can't go out, there's vacuum out there.
There's just so many things that can go wrong.
3:37, a jet-propulsion team lead who knew very little about Thermodynamics, lol. Truly innovative.
Just like the head surgeon who's only experience was as a kitchenhand dicing tomatoes.
I'm still trying to figure out how Hyperloop could ever be revolutionary. It's literally just a mag-lev train in a vacuum tube. Sure, it goes somewhat faster, but the trade-off is a much longer wait time while the vacuum is restored and a much higher risk of instant death if something goes wrong.
It might go somewhat fast. Possibly. I didn't see any pod go several hundred miles an hour for miles on end.
They got up to maybe 80Kph top speed and that was the fastest one.... Not exactly highspeed
why not have the doors attach to basically outer doors, keeping the inside of the tube at vacuum? you'd only have a very small space be pressurize.
*Pipe dreams*
Hey
I made that joke
Ok dad
I almost feel bad for the students there!! They spent so much time and effort in a technology that was OBSOLETE years ago due to high speed trains like the shinkansen in Japan, the TGV in Europe or the AVE in Spain.
But then again, kids there don't care if it works or if it's commercially viable, all they care about is passing that class with good grades.
Betting 99% of comments will be about thunderf00t debunking this.
Robin Gilliver not an argument
*Trying to. He showed an issue and then pretended there were no solutions. Very intellectually dishonest.
@Jeroen Bollen Incorrectly worded. TF pointed out an issue, which doesn't mean that HE HAS TO SOLVE THE ISSUE TO HAVE HIS CRITICISM ACKNOWLEDGED. In what world does pointing out a flaw require you to fix said flaw? lol Thunderf00t isn't perfect but he's way more credible than uneducated people trying to excuse blatant flaws in an idea. A terrible idea.
except hyperloop isn't a solid object occupying the entire tube, hyperloop is larger and thus has much more inertia, and the distance from a vacuum failure to the nearest pod is likely much further
There really is no solution to the problems. The hyperloop tube is extremely vulnerable and if you make it out of something durable enough like whatever they make tanks out of, it becomes cripplingly expensive. Here on Earth, airplanes are probably the best people transportation. They have no tracks that can be disrupted it require expensive maintenance, they go quite fast, they are extremely safe as well. If we didn't have the stupid and unnecessary TSA, boarding would be a breeze. The hyperloop requires pressurization to board and exit which makes it functionally slower than aircraft. Self driving cars and maglevs are probably the ultimate surface transportation for why planet because they don't rely on the atmosphere to work.
3:16, 12.5 Million USD for 1.6 Km tube...? Imagine maintenance and running costs!
did you know that any bridge that you see on the highway, at most 100ft long cost about 12 Million to make.
+theAppleWizz 100 ft at 12 Million? That doesn't sound right.
Im not saying that 100ft cost 12 million what I'm saying is that most bridges you see on highways cost about 12 million
+theAppleWizz Ah okay, gotcha. It reads that way though. You might want to edit it.
So if you use pressurized tanks to give you forward momentum; I ask how do you scale that up for a trip to San Francisco from Los Angeles? Plus releasing that much gas in a vacuum tube will dump your pumps and trash your internal environment.
i guess they believe the train wouldn't decelerate for 30 minutes
Even on a maglev there is the slightest bit of resistance, רותם שלו
Even though if you do have pressurized tanks, it can give the high vacuum of the tube away and can potentially creating resistance for other hyper loop trains
Jake Lump air creates tons of resistance... That's why if you remove air from the environment there won't be any resistance
jayakumar v I was taking about a maglev in a vacuum tunnel like this. It still has resistance
The hyperloop is impractical from an economic and logistical standpoint. Even if you can get it to be structurally sound, it will cost too much to maintain. While being theoretically possible, there are far more economical and logistically valid modes of travel.
SOLAR FREAKING ROADWAYS
[Yoshikage_Kira] lol ye
lol...... you i like.
Bites the dust.
KappaW lol u mad Bro?
+KappaW : He might have an annoying habit of saying things several times, and he might also have a pretty advanced superiority complex, but he actually *is* a real scientist who works with nuclear reactors. If you feel comfortable with dismissing his reasoning out of hand, you either have to have some pretty good evidence behind you or be ok with your own vastly inflated ego.
FWIW, I had very big problems with both Hyperloop and Solar Roadways from the outset - before TF said a word publicly. They just don't meet basic sanity checks as stated. In Hyperloop's case, my issues could be solved but the solutions are not trivial, and the issues have not yet even been acknowledged let alone addressed. Until such time as the issues of airlocks for loading and unloading and containment issues receive some treatment beside pretending they don't exist, this project is far more of a pie-in-the-sky event than Star Citizen's worst critics think that is.
In the ultimate display of teamwork, five dudes pushed a heavy thing on wheels for half a mile.
That's the ultimate display of teamwork? The bar has really lowered...
...what happens next will BLOW YOUR MIND
Nice
Where was the BLOW YOUR MIND-part?
Oh are you sick of empty American talk and promises, too? :)
Alain Rochette )
@@JFDSmit-rm6tw it doesn't work.
Why do all the "testing pods" have wheels when the "vision" uses magnets to stay afloat to reduce friction? if there are wheels then vaccum doesnt matter that much because a lot of the friction will come from the wheels...
This is an amazing video and competition. It’s so refreshing to see people so passionate about engineering!
This is why I want to do these competitions when I begin chosing career paths... it would really be fun and exciting
Seems counterproductive to have a pod based on expelling gas... when the philosophy that underpins the whole concept is a vacuum environment to eliminate friction & drag.
4:40 but how can the vaccum be maintaned if they are releasing gases in the tube?
Thunderf00t is going to have fun with this.
And then some guy crashes a truck into the loop
It depresurizes and everyone in the pod dies
4:30 thats fucking stupid so you can only accelerate for 3 seconds? if both tanks empty 90% of their mass in 3 seconds what do you expect to do the rest of the journey? I know they are prototypes but you should have a design where the acceleration is gradual for the passengers. the average person doesn't want to feel strong G Force. I thought they were going to focus on electromagnetism like shooting a metal object down a railgun but at a gradual speed. they do have floating trains that use magnetism on the tracks, why not combined that technology with the vacuum chamber technology with integrated electromagnets in the tube to propel the pod... idk it just seems obvious
I'm not stepping inside a hundred mile vacuum chamber pod going hundreds of miles an hour.
Hi Seeker, unrelated to this video, I have a controversial topic I really hope you can make an episode of: "Does Cough Medicine Work?" If it doesn't, should it be banned? Are there more negative effects than positive benefits.
Milan Duke Thanks a lot. That was very helpful. I was going to suggest antibiotics to a close friend instead of a cough medicine. May be I'll tell him to have more rest instead. He had a history of pneumonia and it cause delirium to him before so I was worried when he decided to not have antibiotics, but instead he wanted to try cough medicine first, even though both were prescript to him by the PR. But I also know that PR just prescript most people with antibiotics. That's why I wanted to ask. And as you said, they don't really do much as a lot of researches have shown. They can even cause more harm.
Milan Duke He only got it that one time. He's better now but I'm just worried that it will happen again. Thank you for the wishes. Same to you 💖💖
Taking antibiotics when you have a cold or a flu is very irresponsible. It does not aid, as these are viral infections, not bacterial infections. It aids the creation of superbugs.
Jacinda Lacroix you can get high of it it's called sizzerup mix it with Mountain Dew and skittles and enjoy
DO NOT TAKE ANTIBIOTICS FOR A COLD. I REPEAT DO NOT. this is VERY serious you can literally kill us all if you do this. superbugs are a big problem and some bacteria is coompletely immune already. if we dont stop misusing antibiotics then we return to the dark ages where people can die from common disease.
Your telling me it took 12 million? To build a 3 quarter mile long pipe? How is a 1000 mile long tube even feasible then???
That code was just a switch case statement in c++
How do you get out, if it stops mid travel?
Clickbait title almost *stopped* me from clicking. Grow up and just write actual professional titles that describe what the video is about. Please. You're better than this.
lol dont watch next time..noone gives afuck whether u watch or not
@@sanchitkabra4839 REEEEEEEEEEEE!!!!!!!!!!!!!
None of the teams can produce radical innovations
One of the best seeker videos since it was named DNews!
this is a joke, right?
What happens when miles and miles of tube, with a vacuum environment inside it, gets crushed from the weight of the atmosphere?
The badgers pod is literally a CO2 cartridge car. Why did they get the innovation award?
Anyways, a rocket car won't work because it's in a vacuum so the rocket will decrease the vacuum over usage. So the more propulsion used the worse the tube as a whole functions.
I guess its like a "participation award" in a running race, one trophy gets paid for, and the best team wins no matter what. Also, if this stuff is the "winner" then what precisely did the losers accomplish? (perhaps the project was incomplete, or got stuck in the tube, or had political graffiti on the nose, or sprayed chemicals on the judges, or wounded a judge with an electrical discharge, or gored the judges with varying protuberances, or exploded into shrapnel, or maybe just remained DOA and ready for burial) ;)
It's brilliant: Perfectly stupid but within the rules.
If they are running in a vacuum, why are all the vehicles aerodynamic, and losing carrying capacity ?
At speeds like that, able or not, you will NOT get private citizens to agree to the use of their personal property for the mostly straight tube that will be required for implimentation in real life. This is why roads and rail often curve and turn around personal property. And, no, eminent domain will not prevail for distances such as these.
Love how they have no footage of it in use working. Seriously, as much as you try to hate Thunderf00t, you have yet to show a working model after all these decades of talk about building one, Eon Musk advertising saying it's possible. yet still can't get it to work. Until then Thunderf00t remains correct. cars and hyperloop had the same amount of time go from the conceived idea to actual use. Cars made it, Hyperloop didn't.
They should put an egg inside the module so if it breaks we'll know that people probably wont work out so well inside either.
Bismuth LD were less fragile than an egg
I can think of 10 things that would destroy a person and wouldn't impact an egg.
Dropping an egg on a grass field from any height
What happens to a human inside the tube?... MMm NASA already knows...
Some degree of consciousness will probably be retained for 9 to 11 seconds . In rapid sequence thereafter, paralysis will be followed by generalized convulsions and paralysis once again. During this time, water vapor will form rapidly in the soft tissues and somewhat less rapidly in the venous blood. This evolution of water vapor will cause marked swelling of the body to perhaps twice its normal volume unless it is restrained by a pressure suit. (It has been demonstrated that a properly fitted elastic garment can entirely prevent ebullism at pressures as low as 15 mm Hg absolute [Webb, 1969, 1970].) Heart rate may rise initially, but will fall rapidly thereafter. Arterial blood pressure will also fall over a period of 30 to 60 seconds, while venous pressure rises due to distention of the venous system by gas and vapor. Venous pressure will meet or exceed arterial pressure within one minute. There will be virtually no effective circulation of blood. After an initial rush of gas from the lungs during decompression, gas and water vapor will continue to flow outward through the airways. This continual evaporation of water will cool the mouth and nose to near-freezing temperatures; the remainder of the body will also become cooled, but more slowly.
You have about 60-90 seconds from initial exposure to get them back into a re-pressurized environment to have any chance of survival and if their heart stops within that period they are dead.
few questions 1. how much energy will it take to pullout all that gas(air) in the tube per (enter distance of tube here) compared to the energy consumption of something comparable? 2. what happens when there is a failure in the tube? 3. doesn't the propulsion purposed here add more mass (gas) to the tube causing you to need to pull it out again? 4. how are you going to deal with pressurizing/depressurizing the tube every time you pull out its cargo?
i understand the idea behind this but i feel as though it will fail. usually we find new ideas from failure of old ones so that's why i don't mind this happening but i still feel we need to stay critical of what we are doing.
well the only problem here is why make a aerodynamics car that travel in near vacuum? ITS HAVE BARLY NO DRAG IN NEAR VACUUM! The only thing that can let the car travel faster is the fuel efficiency and if you travel without wheels, the only thing that can let the car move is using magnet or using air propulsion but the pipe need to constantly pump air out to maintain the pipe near vacuum
Khoo Hao Yit yeah I've been thinking that too, no atmosphere no need for aerodynamic pods
still enough drag that aerodynamics can reduce energy consumption
Kevin Fernandez So their original idea scrapped? How about making their own highway so they dont need to create a tunnel that cost a lot of money and time. BTW they need to refill the tank to high pressuer every ride.
I have a better question - why vehicle that is suppose to travel in vacuum sealed tunnel destroys vacuum as means of propulsion ? It looks like this contest is done for shit and giggles.
@Khoo Hao Yit - No the original idea is not "scrapped". Even at significantly low pressures inside the tube there will be a pressure wave at high velocity. The shear stress gradient is exponential. As you approach 700mph you're going to require an aerodynamic body to reduce resistance even in a very very thin atmosphere. To be clear, I'm not a proponent of Hyperloop. I think the idea fails for many reasons, but this is not one of them.
For a moment I thought this was a science channel. Then it used miles per hour.
Dude at 2:21 clearly skips leg day.
He probably skips every day
Team lost twice,
got a "you're not that bad" Trophy,
best day of their lives.
The mind boggles.
probably better than anything you will ever achieve
This is a super credulous report. The hyperloop pods from the previous year didn't prove anything but failures. There are actual engineering competitions out there where student lead teams excel, the hyperloop competition has not been one of them. The hyperloop is a project with some very big hurdles to get past. Like the fact that a much smaller tube that is only 3/4ths of a mile long costs a huge amount of money. If the pod is run with compressed gas it's going to spoil the vacuum, so no gas propelled pod can ever be part of a working hyperloop system.
It won't run on compressed gas. It will be a maglev in a vacuum tube which for strange reasons its fans think will be cheaper to build than a maglev not in a tube. Fast maglevs have been around a while already and have NOT taken the world by storm.
so much design not a lot of thought. so can someone tell me what happens to the passengers in a curve ?
You have to think if its
A-cost effective
B-safe
C-practical
D-Will it gain new knowledge
E-Is there better alternatives.
This fails at all of them.
The Hyperloop does not work now.
1:How do you want to make a Vacuum chamber that large?
2:How do you want to get a the passengers in the tube without getting them blackout?
3:Accelerating with Gas in a Vacuum tube???
This were just a few things what they should thing about...the concept is great but there needs to be a lod of Engeneering done.
Thunderf00t has talked about the hyperloop
care to elaboraten?
Watch his videos. I can't go through everything, but he's been talking about how dangerous the hyperloop would be and a few other things
Skoenner nah, I don know man
I don't trusten him.
Simon Andersson Some of those concerns, in all seriousness, makes the stupid assumption technology will not get better.
Which it will, that is a given with progress.
But it is a flawed video, to put it nicely.
Well, he's a research scientist who shows his calculations in his videos, so other people can correct him if they can. He's put up a video once, where he admits his miscalculations and does new ones, while keeping the video with the faulty calculation open to be viewed
It will implode ,the pressure of the air will crush
2:28 hahaha
Anyone else noticed the dude who tried to be cool at 2:31😂😂
I'm so excited to see all these talented, passionate and intelligent people working on something so innovative and potentially revolutionary. 😊😊💖💖🚄🚄
UA-cam Comments Suck wtf 😂😂I'm ded 😂
Sgt. Maverick I know right. lol LOOK HERE CHECK OUT MY BOOOOOOBSSSS /(🍔)(🍔)\
Winds_Of _Night There are girls in all teams. But it's irrelevant to me, people are people. If they're all men, I'm also happy; if they're all girl, I'm also happy; if they're all transsexuals, I'm happy. Gender is not the point here.
transexuals are a gender? idk but u i dont care about gender too peaple are peaple
It is really exciting! And I'm happy other people are just as excited about innovative engineering and science as I am.
They're releasing gas from a container? It's a vacuum tube you'd need to pump it all back out and re pressurise the container probably a few times during each trip.
700mph? Use km/h instead, please
about 1126 km/h :P
T1mor no
That's about 1126 km/h.
T1mor Mph is miles per hour
T1mor just times it by about 1.6 and u have it in km
Stop in seconds? Can we arrest them for attempted murder?
So basically they are ripping of Fast and Furious.
How?
benderbg off*
...and the pneumatic tubes at banks that inspired all of us to conceive of the "hyperloop" at age-6. Also, the works of numerous sci-fi/futurists
?!?!?!?!?!?!?!?!!?!?!??!?!?!?!?!?!
Hemera I don't think people have watched the original f&f movies
people always forget the 2 limits to engineering
the physical limit and the economical limit
no one in the world has enough money to security to keep people from destroying the thing
The hyperloop will not happen in your lifetime.
Bill Schlafly it wont happen in ur lifetime even if u are imortal at least I hope it wont
same was said about transrapid, but germny developed it about 48 years ago (...and sold the concept to china -.-) and basically the hyperloop is just a transrapid in a low pressure loop
Basically you don't understand physics, economics, how long you will live, or logical fallacies. "The same was said about such and such." is a logical fallacy. The fact that someone said something isn't possible, which then became possible, doesn't mean a hyperloop possible.
1. There are technological hurdles that can't be over come with today's technology and materials and we will be dead and gone before this is possible.
2. Even if the tech and materials were available right now, the Earth will move an inch or 2 causing catastrophic failure.
3 and 4. Long range hyperloop systems (as proposed) will become too costly to maintain and and it will be far more dangerous than current modes of travel.
Check back with me when I'm wrong. Until then keep dreaming
It likely won't happen ever as there are already better methods that already exist and are oh you know... actually viable.
Bill Schlafly it may not, but if everyone thought like you then in the far future when everyone died and their children grew up, there would be nothing to finish, no innovations. They start and develop it, and eventually it benefits humanity later.
So the badgerloop team won a participation award. Cute.
Congrats to them, now they just need to make the Hyperloop actually work (because it doesn't), and open people's eyes to the fact that it's an incredibly unsafe way to travel that will never reach intended speeds without major redesign. And they'll be all set...
Who said anything about thunderfoot? I can't remember the last time I said "hey, you know what would be fun today? Going 700mph in a vacuum tube with walls thinner than the monitor I'm currently watching this video on, I hope nothing bad happens that will cause my internal organs to suddenly become external if I don't suffocate first, or become liquid from a crash at mach 1!". And to top it of, IT DOESNT WORK!!! It took them what, 10 hours to even pump the thing down, and the cars didn't even go 100ft on their own? It's just not viable with the current design. Do your own research before you claim that multiple people (NOT including myself), with more degrees in physics/science than you, are wrong.
God satan you mean a 22lr and and a campfire? Have you seen the mythbusters test of what a dent in a vacuum chamber does?
Or we can use to ship products, but the infrastructure is unrealistic. Tunnels in Cali? Thought we're getting a speed train first
Optical Clarity okay then, where are your qualifications and scientific evidence that proves what what you are saying hm?
+HellishGrin460 in a tank intended to be pressurized, not put under the stress of a vacuum. try vacuum a baloon and see why vacuum behaves differently of pressure.
have you wondered that the support in a tank for pressure is in the outside and the support for a vacuum tank it's in the inside.y
So what happens when a tube implodes?
So SpaceX look at designs from bright minds, then effectively use it for themselves. Then all the credit goes to Musk upon use/completion of said SpaceX Hyperloop Pods? It's a celebration of science and engineering, but I can't help but see that SpaceX/Elon would take all credit to use the winning pod. Probably not, I guess.
Suppose it's still a display of engineering and science no matter who creates it.
The teams are awarded for their work and these contests are made public.
SpaceX probably will take over from the creators but think how much money will SpaceX will give to the succesor
thats basically how the world works
I doubt the winning pod will end up being used. I think they are just hosting this competition to advance the technology they will need to eventually build an actual Hyper Loop.
How are you going to keep the tube from colapsing, and if it does, spat goes the people, also it would take a very long time to de-pressureis and then what if there is a moinor leak In the tube, then all you have is a long expensive tube thrue the dessert that could take mounths to find the hole that de-presurised the tube, then you would have to pump all of the air out of it. That would be expensive, and the project over all would not be cost effective.
Obsolete. North Korea has it way better and highly advance technology
North Korea? You sure?
Yep
Baby Un built it when he was 3.
stimproid lmao
True!
One tiny hole in the hyper loop would kill every body in it. The hyper loop will never be made.
small wheels are optimal on high speed trains. That's why you see rollercoasters with big trains with small wheels... wait. That's not right.
And as you know. Design is more important than actual engineering. If a bridge looks great, but colapses, you still deserve a prize.
Design cannot be materialized without engineering. Also design can make nice looking bridges as you said but only engineering can make sure they do not fall off. You debunked your statement with your own example.
debunked? You understand my post exactly the way I want it.
Karasaph Exonar
Do you know that Hyperloop is meant to be Maglev, and they do not have your traditional wheels, and did you compare rollercoasters with a Train son? Besides kneejerk reactors like
El Bottoo do not understand that not only were you wrong, but my reply had nothing to do with supporting Hyperloop, the joke is on you, learn to read. I do not think it will work as my comments state below.
Maglevs levitate at their higher speeds , but need wheels at lower speeds and that is not because they are like rollercoasters .So no small wheels or roller coasters. Now move on.
sorry, totally forgot about the maglev part. Guess I was wrong then.
Its an admirable quality to accept one's mistakes , good on you and respect.
Now go report on Solar Roadways and talk about how fantastic it is
The hyper loop is scientifically impossible.
Scientifically?, give me the source of the paper saying the reasons of why Hyperloop couldn't work
Jim well I heard even the emDrive defies the Newtonian law of motion. maybe if we are a bit more open minded regarding science. A thousand years ago, 99.9% of the earth's population thought that the earth was flat but here we are today because of the resilience of some out of the box thinkers. Our knowledge of science is still very little. If black holes and many other mysterious things can exist, so can these.
Brett Van Overstraeten People did think the Earth was flat because it looked flat until the Greeks found out it wasn't.
People did think the earth was flat, although a thousand years ago they already knew it wasn't.
Jim no it's not
it's economically impossible
I'm not gonna be one of the guys who are like "WATCH THUNDERF00T YOU NUTCASES", but I would at least give his videos on the Hyperloop a listen.
Someone should've told them beforehand that this technology is a dead-end.
A A, Alissa Spoons 2.0 Because when I was a kid I thought up the same idea: "a vehicle with less air resistance to overcome would be able to travel faster". Because many people throughout history have had the same idea (it's not exactly complex), and all of them up till now recognised the problem. If your tube gets just a small hole in then a big wave of air is going to travel down the tube (in both directions) pushing everything out of the way; which will likely kill any passengers inside the loop (the entire loop, all the way across the country). What's worse is that if a bit of gravel gets inside the tube and is kicked up by one of the pods it's going to break the tube. And you can't put the tube on the surface (because one point of failure turns the entire thing into scrap metal), so you have to bury it, and then deal with all the issues with tectonics. And you have to deal with the thermal expansion of the tube during the day. The entire idea is a non-starter, and when we have transport options like planes, buses and trains on the market (none of which have these problems and are far less expensive) you start to see that the Hyperloop is a very expensive waste of time, not a revolution.
You don't know if it works until you try it, do you know how many times Thoma Edison tried to make a light bulb?
PlatinumAltaria we only have to win in that competition
Pedro Rocha Do you need to test whether putting your hand in a fire will hurt you? No, you know fire hurts because you know what fire is. I know that it's impossible to maintain a vacuum over a large tube because of the various reasons given. There are many obsolete transport technologies (like monorails), and we don't need to try them out more than we already have to know that they don't work as well as other systems. If you have a criticism of our reasoning as to why it won't work then that's fine. But wasting large quantities of money and time that could be better spent on functional technology can't be defended with a simple "you never know unless you try". And Edison was an actual engineer, Musk is a businessman (albeit a prolific one). His skill lies in investment, not in development. I can't imagine how the project has gotten this far without someone on the inside pointing out the obvious flaws.
PlatinumAltaria If air got into the tube it would slow down the pods inside because of air resistance. Air wouldn't keep entering after the pressure is equal to the outside so nothing would be crushed. The tube would probably be equipped with sensors to detect the pressure change and activate the brakes on every pod inside.
So... A compressed gas propulsion in what has to be a vacuum tube for this whole concept to make sense?
Waste of time....
how are you using your time
Actually its purpose is to save time. Did you even watch the video?
Yo Yo Lol okay
I agree, this whole thing is a waste of time.
+friendly911 OS So you agree with a moron who doesn't understand that this is a time saver? Are you starting a club for idiots then?
Why are the pods built sleek and aerodynamic if they'll be in a vacuum tube?
Isn't the whole point of hyperloop to remove air resistance for faster speeds?
It's a near-vacuum, not full vacuum. There is still some air and at high speeds the pod runs into enough air that aerodynamics still come into play.
REPLY
There's so many Thunderfoot Fanboys in the comment section. I think the guy with a team of world class scientists to consult would know better than some random person on UA-cam. Plus, a lot of TF's arguments could be applied to planes.
Air-planes are one of the safest methods of transportation in existence.
Thunderfoot and his fanboys are idiots.
Vrael planes can be landed
you can't leave the tube that contains the pod
Vrael you know he works or worked at a nuclear reactor right?, because I'm pretty sure they don't just let anyone work there
Airplanes have the same issues on a *much* smaller scale. Problems tend to be harder to manager as they get bigger.
Around 4:45 mins in you'll hear the most complicated way of describing releasing gas from a bottle to push the pod
Lol
As long as the tube is made of a clear material ill be okay. But if its some closed off shit no thanks.
Just watch thunderf00t video on this... Completely debunked it
No he didn't. He showed a potential problem and then ignored the possibility of a solution.
Hyperloop has done nothing to show that their concept is even viable. lol. Going like 80mph isn't viable btw.
Not really.
There is a solution for it since Siemens developed it transrapid technology.
He didn't just show one problem he showed many problems. So far this thing is 100% hype and 0% reality.
@Viscious Circle - It's not 100% hype or 0% reality. The concept works in principle, and not only on paper. These contests and Hyperloop One are proving it. But there are so many other problems with the idea that it will never be commercialized. I don't mean just engineering challenges like the speed and efficiency of the airlocks, which is a big problem its own. No, I mean practical issues like blocking and switching, how's that supposed to work in an airlock situation? Then there's capacity which would be absurdly low. We're talking maybe 50 - 100 passengers an hour due to the small size of the vehicles and widely separated dispatch times. Other things like emergency egress... how is that supposed to work? I can't even envision a hypothetical solution for it. These are non-starters for the commercial application of Hyperloop. But the idea is certainly not as useless as you claim because not every engineering challenge needs to be commercialized to be considered 'useful'. Teaching in itself is ENORMOUSLY useful! Please be fair in your criticism. If nothing else, Hyperloop is a neat concept, a fun project, and an interesting collection of engineering challenges teaching people things about integrated transport systems that are difficult to experiment with in any other way.
So badger loop just got the biggest appreciation trophy lol
Haha! Wow Wisconsin sucks! 2 years in a row and you still can't make the cut! But in your guys' defense, you really can't beat German engineering!
nope the germans won
My Stupid Opinion at least Wisconsin almost one and there not even an entire country with more resources (Wisconsin for life)
jet propulsion in a vacuum tube is stupid.
Speaking here as someone from one of the other teams that went to the competition.
So many people so close minded.
I am closed minded towards believing in flying pigs, and proud of it. Dont be so open minded that your brains fall out.
Musk fans are the closed minded ones. They assume everything he says or does is some kind of genius. Start to look at this Hypeloop with an open mind and you soon see that it is going to be very very expensive for no advantage except speed (assuming it can be made to work). Everything else about it is disadvantage.
Why do they make then aerodynamic when it is a vacuum?
It's a near-vacuum, not full vacuum. There is still some air and at high speeds the pod runs into enough air that aerodynamics still come into play.
How expensive is this shit? Is it like those magalev trains, can we spend money on less frivolous things please.
You clearly don't understand the purpose of this nor maglev.
Zombie David Bowie is my sensei not as expensive as our bullshit military budget
If this gets built it would revolutionise long distance travel.
This thing would probably be more expensive than space flight
What would you like to spend money on?
hyper means hyper, and loop means loop. any questions?
They got billions in funding, it went nowhere and then they rioted over something unrelated?
I personally think this is a pipedream because I have seen what can happen if a vacuum chamber experiences a structural failure while it is under vacuum chamber. It was TERRIFYING but very interesting.
It does not explode, it implodes.
makes you wonder why they all look so aero dynamic
Badgerloop travels by expelling gas - thereby mucking up the vacuum of the tube. WTF
Hyperloop is one of the few things by Musk I dont support, Its costly and if one thing goes wrong it has the potential to damage his reputations hurting his goals for space.
video starts at 6:04
my question is...why not use a maglev style propulsion system for the hyperloop? why not take an already understood and tested method and see how it interacts with the hyperloop? would the vacuum reduce friction and allow for faster speeds and more control? wouldn't the maglev also allow for less reliance on gasses and remove the need to refuel the vehicle?
The RWTH Aachen team could have joined this competition and easily won. But we all know it’s a waste of time. Too bad the students from TU Munich are wasting their time
Why do we have to hear about it from the perspective of team Badger
So what _was_ going to be a giant rail gun, is now a giant air rifle with less resistance for the projectile. Okay.... still never gonna go on it :P
And the three people that did not get into the final race "won" the innovation "award" "?"
so why are they asking college students to design this? Why dont they have their own team of phds and engineers working on it.
Because it's a waste of time and money and they don't want to waste their own money.
so they didnt get to go in the loop?
so what happens if for some reason one vehicle needs to stop half way through, either permanent or just for a simple second..
all following need to stop aswell and they need a support team to restart them?
I mean, shorting a long trip is good in alot of ways, but putting people in a tiny tube and tell them "we hope it is just for 30 minutes, bring entertainment" and then your stuck there for a couple of hours?
Wait wait wait, it cost 12.5 million dollars to build a 3/4 mile loop? How scalable exactly is this thing?
It should cost about 40-50 million dollars per mile, a freeway can cost more.
No maglev? Compressed gas propulsion in to a vacuum?
Liquid nitrogen and mercury in a vacum chamber with magnets in the loop with no friction and can go faster then 700 mph
wow. 90 km/h. really stepping on new grounds here folks