Slashdot Mirror


SpaceX Is Building a Hyperloop Test Track Near Los Angeles (techcrunch.com)

An anonymous reader writes from a report via TechCrunch: SpaceX appears to be hard at work building its Hyperloop test track through Hawthorne, a city in southwestern Los Angeles County, California. TechCrunch reports: "SpaceX is hosting a Hyperloop Pod Design Competition for student and engineering teams, and 23 winners were selected earlier this year to build their pod prototypes and race them on the test track, a 1-mile tube capable of achieving 99.8 percent vacuum. Said track was photographed by reddit user 42finder this week (via Electrek). Pod testing would be a big step for Hyperloop technology. The two main companies competing to build the first operational Hyperloop systems, Hyperloop Transportation Technologies and Hyperloop One, have yet to create pod tests. HyperloopOne has begun construction on its own test track in the Nevada desert, of course, but the SpaceX project looks considerably further along. Back when SpaceX first announced the competition, the timing of the final round which includes the actual test of final prototype pods was set for Summer 2016, but in July SpaceX announced that would slip to January of next year."

125 comments

  1. ... as long as Tesla is not involved! by Anonymous Coward · · Score: 0

    It may turn out to be safe!

    1. Re: ... as long as Tesla is not involved! by Anonymous Coward · · Score: 0

      Well a SpaceX rocket blew up this week...

    2. Re:... as long as Tesla is not involved! by Anonymous Coward · · Score: 0

      ALL Tesla accidents so far were caused by the DRIVERS.

    3. Re: ... as long as Tesla is not involved! by K.+S.+Kyosuke · · Score: 1

      Coincidentally, a Chinese one exploded within hours of that incident. It just sounds like a shit luck day for the industry.

      --
      Ezekiel 23:20
    4. Re: ... as long as Tesla is not involved! by Anonymous Coward · · Score: 0

      I suspect every one else reading your terse comment is as puzzled by what you mean as I am. If you are trying to suggest that Tesla is somehow unsafe, you are truly delusional. Yes, there have been a few people killed in Teslas, but there are hundreds of thousands of Teslas on the road now, which has shown by its extraordinarily low accident rate that it is one of the very safest cars ever built. If you are trying to fault them for having a fatality while someone was on autopilot, that is still biased at best and delusional at worst. No human or autopilot driver can survive every crash scenario, for obvious reasons--- if a big rig cuts in front of you without sufficient time to brake or use evasive maneuvers, nothing will prevent an accident. Teslas being driven on autopilot so far have amassed millions of cumulative miles, and the accident rate for those Teslas is half of what the accident rate is for the same vehicle being driven under full human control. Furthermore, not only have Teslas gotten the highest ratings awarded for crash testing, but the Tesla Model S is so robust it broke the testing apparatus when being put through the roof crush test being done by the U.S. government.

      Be thankful you wrote up your comment as an "anonymous coward", or you would never live down such a ridiculous post.

    5. Re: ... as long as Tesla is not involved! by billdale · · Score: 0

      Sorry, not true. I am not privy yo the data on all accidents, bit there have been at least one or two caused by third parties,, such as one recently on the 405 fwy. on Los Angeles. Some fool was driving so recklessly and at such high speed that drivers were calling in to CHP to report him. They dispatched a patrol car to intercept him, but before they could reach him he had plowed into the back of a Model S with two little girls sitting in the third row, facing rearward, who were killed. The driver survived. The height of the bumper of the SUV was an apparent factor in this accident since it did not impact the Tesla's bumper, but rather rode over it and through the rear window. That is not the kind of accident I would expect anyone to survive regardless of the design of the vehicle. If I had children, I would not feel safe with them sitting in such a rear seat.

    6. Re: ... as long as Tesla is not involved! by Coren22 · · Score: 1

      The Model S has no third row, it is a sedan.

      https://www.tesla.com/models

      Did you maybe mean the Model X?

      https://www.tesla.com/modelx

      --
      APK likes to ask for responses to the same things over and over. Maybe he just likes the responses?
  2. Safe? by Mister+Transistor · · Score: 1

    As long as it can survive trip #2, it's all good...

    --
    -- You are in a maze of little, twisty passages, all different... --
    1. Re:Safe? by The+Real+Dr+John · · Score: 1

      This is what happens when you let individuals accumulate too much money. What could possibly go wrong? I want to see what insurance company steps up to cover this thing. The funniest part is that I remember these things from planet patrol back in the early 60s. This is an old sci-fi idea being turned into a dangerous reality by an eccentric billionaire.

      --
      A brain is a terrible thing to waste... Mind? That's debatable.
    2. Re:Safe? by NotAPK · · Score: 1

      "I want to see what insurance company steps up to cover this thing"

      None.

      Insurance is not a requirement for anything. If the individual has enough cash to self insure then they can do whatever they like.

    3. Re:Safe? by AuMatar · · Score: 1

      Or if its set up by a corporation which can safely go bankrupt.

      --
      I still have more fans than freaks. WTF is wrong with you people?
    4. Re:Safe? by Anonymous Coward · · Score: 1

      Don't be so down on Elon. He's one of the most successful African-Americans in the country.

    5. Re:Safe? by Applehu+Akbar · · Score: 0

      Eccentric billionaires taking risks are the people who get things done. NASA would never have thought of landing a rocket on its tail, and wouldn't have allowed its most adventurous engineers to try it.

    6. Re:Safe? by Mister+Transistor · · Score: 1

      Actually they did experiment with it, at least with VTOL planes, and they eventually gave up. They decided that not being able to see out the window while landing was an insurmountable problem.

      Now, with computer assisted landing ability and closed-circuit TV, it's an achievable reality.

      --
      -- You are in a maze of little, twisty passages, all different... --
    7. Re: Safe? by Anonymous Coward · · Score: 0

      If they were carrying actual passengers and not just a demo, they'd need either insurance or to post bond.

    8. Re:Safe? by Sperbels · · Score: 2

      They wouldn't have thought to land a rocket vertically? That's been depicted in science fiction since the 50's. Not to mention, they actually did have a little success with this in mid 90's with the DC-X.

    9. Re:Safe? by Applehu+Akbar · · Score: 1

      How quickly the young whippersnappers forget.

      Everyone thought the whole vertical landing idea was hokum until those surprising first tests of the DC-X. Then unaccountably, NASA abandoned all DC-X development after the first test failure. The reason has always been a mystery.

    10. Re:Safe? by Sperbels · · Score: 1

      I don't know, it's not that surprising. They were working toward an SSTO launch vehicle at the time. A landable rocket wasn't really needed.

    11. Re:Safe? by TechyImmigrant · · Score: 1

      This is what happens when you let individuals accumulate too much money. What could possibly go wrong? I want to see what insurance company steps up to cover this thing. The funniest part is that I remember these things from planet patrol back in the early 60s. This is an old sci-fi idea being turned into a dangerous reality by an eccentric billionaire.

      Also this..
      https://www.amazon.com/Transat...

      --
      I should use this sig to advertise my book ISBN-13 : 978-1501515132.
    12. Re: Safe? by Anonymous Coward · · Score: 0

      Someone who is as brilliantly successful as Musk will always be a lightning rod for asinine comments by trolls such as yourself. Just because he is bold and confident does not make him reckless or foolish. The Wright Brothers had dingbats such as yourself making the same kinds of comments about them--- you surely would have been one of them if you had been around at the time, now, is that not true? And, of course, cretins such as yourself will always be gleefully smug every time such pioneers falter, miscalculate or experience a setback. That is because you cannot and will not ever be as brave as to stick your neck out and risk the kinds of criticism you are willing to dish out. Admit it: you have never risked failure for anything more than a game of Monopoly in your entire miserable life now, have you?!

      Loser.

    13. Re: Safe? by Anonymous Coward · · Score: 0

      !!!! Wow, I, never thought of, him, as "African American, but you're right. Even if he, were Albanian-Chinese, I'd still admire his guts and ingenuity to the nth.

    14. Re: Safe? by Anonymous Coward · · Score: 0

      "A landable rocket wasn't really needed."

      Not sure why you would say that. Just because it was a SSTO does not mean that the crew would not want to return to base eventually. Even if it was unmanned, they would still want the craft to return so, it could be reused, which is the entire point of such maneuvers in the first place. As Musk points out frequently, the cost of the fuel for such a system is less than one-half of one percent of the cost of the vehicle itself. To be able to reuse the spacecraft, routinely would be very disruptive, and make space exploration far more practical than it currently is.

    15. Re:Safe? by Coren22 · · Score: 1

      Didn't the lunar modules land vertically? It isn't that much of an insurmountable problem...

      --
      APK likes to ask for responses to the same things over and over. Maybe he just likes the responses?
    16. Re:Safe? by Applehu+Akbar · · Score: 1

      "Didn't the lunar modules land vertically? It isn't that much of an insurmountable problem..."

      On an airless body there is no other way of landing a craft, and the low gravity simplifies the problem. But NASA never envisioned carrying the idea over to landing on Earth.

  3. Musk: Who will I show up this year? by ravenshrike · · Score: 1

    I know, I'll leave the Hyperloop guys in the dust and revolutionize a specific, highly conditional transport capability.

  4. Is this Hyperloop or "Hyperloop"? by Rei · · Score: 2

    Because it's hard to know what one means when they talk about "Hyperloop" anymore. The original Hyperloop Alpha document spelled out a very explicit concept. Then they held the student Hyperloop pod competition and the winners were absolutely nothing like what was laid out in Hyperloop Alpha.

    It comes across to me that the main point of this competition is more to drive student interest in engineering rather than to build a viable transportation alternative. Hyperloop Transportation Technologies and Hyperloop One seem more focused on the latter.

    --
    "99 dead duelists of Dios on the wall. 99 dead duelists of Dios! Take one's ring, pass it around..."
    1. Re:Is this Hyperloop or "Hyperloop"? by PolygamousRanchKid+ · · Score: 4, Funny

      I'm thinking that it is Hyper-Hype at the moment. It's all good clean Christian fun, until one explodes on the launchpad.

      --
      Schroedinger's Brexit: The UK is both in and out of the EU at the same time!
    2. Re:Is this Hyperloop or "Hyperloop"? by taiwanjohn · · Score: 1

      As I understand it, the original white paper was more of a suggestion than a specification. For example, Elon suggested that air-cushion levitation would be the best method, but also acknowledged that magnetic levitation was a viable option. One of the hyperloop companies currently in development (the one that had a live test a couple of months ago) is using magnetic levitation in their design.

      I agree that this particular competition is aimed more at students, but so what? It's a cool idea that gets people interested and motivated. I don't see a down-side here.

      Meanwhile H1 and HTT are working on real-life implementations, and seem to be getting enough funding to meet their milestones. I'm looking forward to watching their progress.

      Finally, because somebody has to say it: I for one welcome our new hyperloop overlords.

      --
      XML is like violence. If it doesn't solve your problem, you're not using enough of it. --AC
    3. Re:Is this Hyperloop or "Hyperloop"? by Anonymous Coward · · Score: 0

      The downside is this is another Concord in development and at a time that such conspicuous waste looks more and more like the Hunger Games.

    4. Re:Is this Hyperloop or "Hyperloop"? by Anonymous Coward · · Score: 0

      It's "Hype your poop".

    5. Re:Is this Hyperloop or "Hyperloop"? by michelcolman · · Score: 2

      For example, Elon suggested that air-cushion levitation would be the best method, but also acknowledged that magnetic levitation was a viable option.

      Just out of curiosity, how would an air cushion work in a vacuum tube?

    6. Re:Is this Hyperloop or "Hyperloop"? by HuguesT · · Score: 1

      its not a complete vacuum. At supersonic speed there is still enough air to provide some lift (also heating, compression wave, etc). Engineering fun.

    7. Re:Is this Hyperloop or "Hyperloop"? by Rei · · Score: 1

      I don't know what you refer to when you say "Elon suggested", but the Hyperloop Alpha document argued strongly against maglev, for cost reasons and because air bearings can be even more efficient.

      It also argued strongly against a hard vacuum, and for a battery-powered compressor to prevent the accumulation of a high pressure area ahead of the vehicle. All of the competitors use either hard vacuum or do nothing to prevent pressure buildup.

      What's being discussed now is nothing like what was being discussed then. I liked the original idea. I'm not a fan of this new stuff.

      --
      "99 dead duelists of Dios on the wall. 99 dead duelists of Dios! Take one's ring, pass it around..."
    8. Re:Is this Hyperloop or "Hyperloop"? by Rei · · Score: 1

      The concept that Hyperloop Alpha was a vactrain is one of those persistent ideas that just refuses to die.

      --
      "99 dead duelists of Dios on the wall. 99 dead duelists of Dios! Take one's ring, pass it around..."
    9. Re:Is this Hyperloop or "Hyperloop"? by JustAnotherOldGuy · · Score: 1

      It lines up with what I said before: the whole thing is bullshit based on impossible-to-overcome engineering problems. It's never going to be built as it was originally laid out, and I mean never. No one is going to build an evacuated tube 100 miles long under the existing terrestrial conditions. That is simply never going to happen and I'll bet anyone $1,000 right now that it never happens.

      Some completely different and mostly impractical thing called a "Hyper-something" may be built, but it's going to be nothing, repeat NOTHING like the pie-in-the-sky concept first advertised, err, I mean "proposed". The original concept is ridiculously impractical from an engineering standpoint and will never be built. And that's not even taking into account the insane security problems.

      --
      Just cruising through this digital world at 33 1/3 rpm...
    10. Re:Is this Hyperloop or "Hyperloop"? by JustAnotherOldGuy · · Score: 1

      Just out of curiosity, how would an air cushion work in a vacuum tube?

      Shhhhh, don't point out obvious problems like this or the suckers funding it will run away.

      --
      Just cruising through this digital world at 33 1/3 rpm...
    11. Re:Is this Hyperloop or "Hyperloop"? by JustAnotherOldGuy · · Score: 1

      its not a complete vacuum. At supersonic speed there is still enough air to provide some lift (also heating, compression wave, etc). Engineering fun.

      Errrr, no. As someone who's dealt with both vacuum and high-vac equipment, let me be the first to tell you that even at 800 mph there's not enough air to provide any meaningful lift or cushioning effect.

      --
      Just cruising through this digital world at 33 1/3 rpm...
    12. Re:Is this Hyperloop or "Hyperloop"? by taiwanjohn · · Score: 1

      It would seem that Elon and his team disagree with you. OTOH, it would seem that the folks at Hyperloop One disagree with Elon, since they are using mag-lev instead.

      I reckon that's the whole point of setting up test tracks like this, to figure out what the best methodology would be. They'll have some races, eat some hot dogs, and collect a shit-load of data along the way. I think Elon is well aware that this technology is still in gestation, it's not quite ready for prime time yet, whatever H1 or HTT may say. Sponsoring a competition like this is a great way to advance the field with minimal cost.

      --
      XML is like violence. If it doesn't solve your problem, you're not using enough of it. --AC
    13. Re:Is this Hyperloop or "Hyperloop"? by Rei · · Score: 1

      It's not a high vacuum. What is hard about this for you to understand?

      --
      "99 dead duelists of Dios on the wall. 99 dead duelists of Dios! Take one's ring, pass it around..."
    14. Re:Is this Hyperloop or "Hyperloop"? by Kiwikwi · · Score: 1

      Just out of curiosity, how would an air cushion work in a vacuum tube?

      All the Hyperloop designs are of course not vacuum, just low pressure, so an air cushion is physically possible.

      However, it's a good question, and Hyperloop One answered it thusly:

      It does get pretty tricky to find enough air in a vacuum tube to use for air bearings. We ultimately went the maglev route for a variety of reasons but this was a big one.

      Hyperloop Transportation Technologies also went maglev instead of air cushion.

    15. Re:Is this Hyperloop or "Hyperloop"? by JustAnotherOldGuy · · Score: 3, Insightful

      You really think that shipping people at supersonic speeds in a ground-based platform of vacuum tubes is ever going to happen? Given the engineering "issues" (lol, to put it mildly) and the delicious soft-target nature of this thing, I can tell you that it's 100% pie-in-the-sky.

      Oh sure, they'll fuck around with it and burn through millions if not billions of sucker-bucks, but in reality it's never going to materialize.

      See for yourself: https://www.youtube.com/watch?...

      Cool idea for sure, but it's never going to happen.

      --
      Just cruising through this digital world at 33 1/3 rpm...
    16. Re:Is this Hyperloop or "Hyperloop"? by JustAnotherOldGuy · · Score: 1

      It's not a high vacuum. What is hard about this for you to understand?

      Even low to moderate vacuum doesn't contain enough air to provide the lifting or cushioning effects that this thing would require. Even the vacuum produced by a $20 Seal-A-Meal gadget would remove enough air so that lift or dynamic cushioning wouldn't be possible, even at extreme speeds.

      --
      Just cruising through this digital world at 33 1/3 rpm...
    17. Re: Is this Hyperloop or "Hyperloop"? by Anonymous Coward · · Score: 0

      What engineering 'issues' are there that are so difficult to solve? I'm not aware of any great challenges, at least nothing bigger than the challenges faced in commercial air travel. There's nothing here that's particularly new, it's just a matter of combining a number of existing technologies.

    18. Re:Is this Hyperloop or "Hyperloop"? by taiwanjohn · · Score: 1

      Yeah, I watched that video when it came out a few weeks ago. I've been subscribed to Thunderf00t's Youtube channel for several years already. If I'm not mistaken, this is his second rant on the same topic. And he brings up a lot of very salient points.

      But I keep coming back to the same conclusion: There are hundreds of expert engineers with (cumulatively) centuries of experience among them who all agree that this is not only possible but doable. And then there's Phil Mason, a lone voice in the wilderness, saying it will never work.

      Pardon me if I side with the optimists on this one.

      --
      XML is like violence. If it doesn't solve your problem, you're not using enough of it. --AC
    19. Re:Is this Hyperloop or "Hyperloop"? by JustAnotherOldGuy · · Score: 1

      And then there's Phil Mason, a lone voice in the wilderness, saying it will never work.

      He's not the only one, but he's one of the better known ones.

      -

      Pardon me if I side with the optimists on this one.

      I think this is the triumph of hope over reason. :)

      It would be super cool if this worked, but between the insurmountable engineering issues, the right-of-way issues, and the glaring security problems, I don't think it's ever going to happen. Minor faults (not to mention sabotage) make this thing a major death trap. It would be the juiciest target ever. Getting a decent vacuum pulled in a miles-long tube 10 or 20 feet in diameter is also a feat that is going to be next to impossible to do in a practical way, and the heating/cooling problems with vacuum seals in the California climate are also pretty daunting. The cost is outrageous, and for what? So you can go from LA to San Francisco really fast? Why not just shoot people in rockets from LA to San Francisco into giant nets outside of Levi's Stadium?

      As someone else mentioned, this is like the Concorde on steroids, times 1,000. It's unfeasible from an engineering perspective and the utility of it is questionable at best. It's the same reason Boeing never built the Sonic Cruiser- billions spent to capture a minuscule potential audience, at great expense (and that didn't even include the danger of a catastrophic failure scenario).

      Cool idea, but in the end, I don't think it's going to happen. I'd be willing to bet anyone $1,000 that it never gets out of the planning/testing phase. None of the stations will ever be built.

      --
      Just cruising through this digital world at 33 1/3 rpm...
    20. Re:Is this Hyperloop or "Hyperloop"? by HuguesT · · Score: 1

      Yes but you do not have to go that low in pressure. Obviously if you recreate the air pressure corresponding to 45,000 feet (10% of sea level pressure), then there is plenty of air for lift. This is altitude where the Concorde used to fly. It would be a marketing feat to call that vacuum, but this is certainly low pressure.

    21. Re: Is this Hyperloop or "Hyperloop"? by limaxray · · Score: 1

      Sigh - this video is an embarrassment to Thunderf00t's typical level of intellectual quality and I lost a great deal of respect for him because of it. I'd like to give him the benefit of the doubt and blame this abortion on him being a scientist and not an engineer, but I can't help but think it's just half-assed click bait and he's sold out his integrity for views.

      So first the whole tube thing - I guess he didn't know we have thousands of miles of natural gas pipelines that operate from 200psi to 1500psi and have a lot of the same design concerns. Obviously the Hyperloop will take a bit of tweaking from what we're doing now, but the ground work is already there and well within our capabilities.

      Next are the fears of capsule depressurization - this can be easily worked around with a number of fail safes like self-sealing bulkheads, emergency tube repressurization, etc. It would take a massive rupture of the capsule to depressurize quickly enough to be a concern, and even then it'd be vastly easier to deal with than a loss of cabin pressure at 35,000ft. He also complains about the dangers of an extremely rapid and violent repressurization of the tube, which would take an act of terrorism and a good amount of ordinance to actually happen - this could be resolved by creating a system to rapidly and evenly repressurize the tube in the event of an emergency (look at the text he quotes in the video, it explains just how this would work, yet he totally ignores it and pretends like it's not there). I will admit there are some safety concerns, but the actual risks are much less than driving a car, and probably less than air travel. The extremely risk averse can stay at home I suppose, but I'd feel a lot safer on a Hyperloop than an interstate.

      Then we get to the grand daddy of them all and it becomes abundantly clear he didn't even read the Wikipedia article, much less the actual white paper - he claims it's propelled by a turbine and explains everything wrong with that idea. Obviously propelling something in a near vacuum with a turbine is fucking stupid - that's why the proposal is to use linear magnetic propulsion like a maglev. There is a compressor system that reduces the air pressure at the front of the capsule and uses it to produce an air bearing between the capsule and the tube like an air hockey table (although magnetic levitation may be used instead). This is to prevent the capsule from compressing the air in front of it as it moves at high speed and has nothing to do with propulsion. This setup will result in extremely high efficiencies as friction is minimized and very little kinetic energy is lost to heat. If the magnetic propulsion system also employs regenitive breaking, a majority of the energy used to initially accelerate the capsule can be captured at the end. I lost a lot of respect for Thunderf00t over this glaring error in his analysis, and while I hope he just misread, I can't help but wonder if he was intentionally trying to mislead his audience.

      Anyway, I only spent a couple minutes coming up with solutions to these 'issues', I'm sure with some more thought much more elegant solutions can be devised. Yes, taking Hyperloop from a concept to a safe and functional product will take some R&D, but it very reasonably could transport people and cargo faster than sound while consuming only a handful of joules per passenger.

      Before he posted this video I was a regular viewer and greatly enjoyed his scientific analysis and regular debunking of physically impossible products. This video only touches on engineering problems, not actual science problems, and engineers have solved much greater challenges in the past. I hope we as a society don't fall into this trap of not trying something worthwhile because it's hard.

    22. Re:Is this Hyperloop or "Hyperloop"? by Rei · · Score: 2

      Question: Do airplanes work?
      Answer: Yes!
      Question: How high can airplanes fly?
      Answer: The jet record is over 37 kilometers, around 4mb air pressure (4x Hyperloop).
      Question: Was it lift that limited it, or a lack of oxygen for the engines?
      Answer: Not even a contest - oxygen!
      Question: Was it in ground effect?
      Answer: Not even close!
      Question: Can ground effect increase lift by literally orders of magnitude as you reduce the distance to the lifting surface?
      Answer: Yes!
      Question: How far are Hyperloop's air bearings from the skin?
      Answer: 0,5 to 1,3mm
      Question: Is that the only source of lift?
      Answer: No! They also shunt in air from the big compressors on the front of each pod - 0,2kg/s at 9,4 kPa - the compressors using 276 kW to take in 99Pa air at 292K at 0,49kg/s to compress to 2,1 kPa at 857K, cooled in an intercooler with onboard water (0.14kg/s) to 300K, with 0.29kg/s shunted to the nozzle expander, leaving 0.2kg/s into the second stage compressor 11kPa 557K via 52kW of compressor power, into the second stage intercooler to 400K, and out via the air bearings.
      Question: Is all of this stuff and much more in the Hyperloop Alpha document for all of this?
      Answer: Yes!
      Question: Did the person you're responding to bother to read the document before going off on the concept?
      Answer: No!
      Question: Why would a person think that was a reasonable thing to do? ... Sorry, I've got no answer to the last one.

      --
      "99 dead duelists of Dios on the wall. 99 dead duelists of Dios! Take one's ring, pass it around..."
    23. Re:Is this Hyperloop or "Hyperloop"? by Anonymous Coward · · Score: 0

      He's not the only one, but he's one of the better known ones.

      Glad to see we live in a world where engineering is a popularity contest.

    24. Re: Is this Hyperloop or "Hyperloop"? by JustAnotherOldGuy · · Score: 1

      So first the whole tube thing - I guess he didn't know we have thousands of miles of natural gas pipelines that operate from 200psi to 1500psi and have a lot of the same design concerns.

      Those are pressurized lines, not vacuum lines, and many of them are below ground. Maintaining a vacuum is a completely different story than using a pressurized system. Pressurized systems are often self-sealing by nature, and they're not used to carry stuff at supersonic speeds nor do they carry passengers.

      --
      Just cruising through this digital world at 33 1/3 rpm...
    25. Re:Is this Hyperloop or "Hyperloop"? by JustAnotherOldGuy · · Score: 1

      I'll bet you US $1,000 that this it's never built and never becomes operational in any real sense. We can put the money in escrow and set a time limit of ten years on it if you like.

      Question: How do you prevent nutjobs from shooting at all those miles of exposed vacuum tubing?
      Answer: Errrrrrr....you don't!

      Question: How do you handle the explosive decompression if there's an accident of any sort?
      Answer: Errrrrrr....you don't!

      Question: What happens when there's an earthquake?
      Answer: California never has earthquakes, so stop with the negativity!

      Question: Are there really enough people who want to go from LA to San Fran or back to make this economically feasible?
      Answer: Of course not!

      --
      Just cruising through this digital world at 33 1/3 rpm...
    26. Re:Is this Hyperloop or "Hyperloop"? by Rei · · Score: 1

      Question: How do you prevent nutjobs from shooting at all those miles of exposed vacuum tubing?
      Answer: Sudden decompression is covered in the document

      Question: How do you handle the explosive decompression if there's an accident of any sort?
      Answer: Sudden decompression is covered in the document

      Question: What happens when there's an earthquake?
      Answer: Earthquakes are covered in the document

      Question: Are there really enough people who want to go from LA to San Fran or back to make this economically feasible?
      Answer: Passenger traffic is covered in the document

      Why is is that debates about Hyperloop always involve the naysaying side having never read the details of the very thing that they're arguing against?

      --
      "99 dead duelists of Dios on the wall. 99 dead duelists of Dios! Take one's ring, pass it around..."
    27. Re: Is this Hyperloop or "Hyperloop"? by Anonymous Coward · · Score: 0

      And it's not a perfect vacuum... it's a very low-pressure system.. And along the track there would be many pumps that would constantly pump out air that may enter in small leaks....

      What happens if it's not a perfect vacuum? Well you get to travel slower....

    28. Re:Is this Hyperloop or "Hyperloop"? by JustAnotherOldGuy · · Score: 1

      Since you're so certain it's a done deal, I'll bet you US $1,000 that this it's never built and never becomes operational in any real sense. We can put the money in escrow and set a time limit of ten years on it if you like.

      --
      Just cruising through this digital world at 33 1/3 rpm...
    29. Re:Is this Hyperloop or "Hyperloop"? by K.+S.+Kyosuke · · Score: 1

      It's all good clean Christian fun, until one explodes on the launchpad.

      Are you talking about John Huss now?

      --
      Ezekiel 23:20
    30. Re: Is this Hyperloop or "Hyperloop"? by billdale · · Score: 0

      "Cool idea for sure, but it's never going to happen." You're not talking about anybody. You are talking about the guy who made PayPal happen, an idea "experts" flatly pronounced a folly. I don't know if you are old enough to remember pre-PayPal--- or pre-Tesla, or pre - SpaceX, or pre-Gigafactory either, for that matter... not to be putting him up on, any pedestals, but he is famed for having said, "aren't they ever going to get tired of being wrong?" He consistently manages to find ways of doing things everyone else thinks is, just too hard, too expensive, or impossible. We need fewer trolls telling us he is too rich, too bold, too risky, too this - and-that, and more people willing to take some chances and be wrong sometimes. Musk has said many times he did not really expect Tesla or SpaceX to succeed, but the end results were too important not to try even if it meant risking hundreds of millions of dollars.

    31. Re: Is this Hyperloop or "Hyperloop"? by billdale · · Score: 0

      limaxray: I'm glad I am not the only one here setting all these trolls straight. It is hard for me to wrap my head around their Luddite mindset. They remind me of all the twerps twelve years ago who were foaming at the mouth trying to insist EVs are pipe dreams and scams, and would never amount to anything. Those same trolls have simply changed the targets of their wrath. They would have been wiser to simply say nothing at all, or something benign and gracious, and let the bold fail with dignity if that was to be their fate, or allow then their glory should they succeed. There is far too much enmity for those that seek to improve our lot. Let them breathe, please. I have almost never seen Musk close to tears, but there was one time: he always admired the astronauts as a whole, and I could see him choking back when mentioning the open ridicule he suffered at the hands of some of those same men he called heroes. I shame those men for their lack of respect and foresight... Thank you, Elon... I am glad to see not all spacemen are so witless as these. (How do I create paragraph breaks?! Grrrr...)

    32. Re:Is this Hyperloop or "Hyperloop"? by Rei · · Score: 1

      I said nothing about it being "a done deal". I said that if you want to argue against a topic, you should at least know what it is before you do so. The design document can be read in an hour, is publicly available, and easy to find. I find it absurd that every bloody time that people on Slashdot want to argue against Hyperloop, they've A) never read the document, B) have posts packed with misconceptions about the very basics of even what Hyperloop is, and C) raise arguments almost entirely already addressed in the document.

      This says absolutely nothing about whether it will ever be built. But for crying out loud, if you want to make an engineering argument against a project, at least read the project's bloody design document first.

      --
      "99 dead duelists of Dios on the wall. 99 dead duelists of Dios! Take one's ring, pass it around..."
    33. Re:Is this Hyperloop or "Hyperloop"? by dave420 · · Score: 1

      I liked how you ignored his points, made more claims covered in the documentation, and then ignored when they pointed out your claims have already been addressed in the documentation. You really showed him! You're the coolest!

    34. Re:Is this Hyperloop or "Hyperloop"? by dave420 · · Score: 1

      You're the only one talking about an evacuated tube. You seem to be arguing against some idea you have in your head, and not against what everyone else is discussing. Perplexing.

    35. Re:Is this Hyperloop or "Hyperloop"? by JustAnotherOldGuy · · Score: 1

      if you want to make an engineering argument against a project, at least read the project's bloody design document first.

      Should I also read the design docs for a "Telepathy-Powered Perpetual Motion Machine" if Elon Musk pretends to build one of those, too?

      Sometimes you don't need to delve deeply into the docs to know something is bullshit. I may be wrong, but I'll bet anyone $1,000 right now that I'm not.

      --
      Just cruising through this digital world at 33 1/3 rpm...
    36. Re:Is this Hyperloop or "Hyperloop"? by Rei · · Score: 1

      Right. Because "Transportation" equals "Telepathy" and "Perpetual Motion". Got it.

      If you're a big fan of arguing about things that you don't even know the basics about, go ahead. But you're only going to make yourself look like an idiot.

      --
      "99 dead duelists of Dios on the wall. 99 dead duelists of Dios! Take one's ring, pass it around..."
  5. No Facebook Satellite by Anonymous Coward · · Score: 0

    I hope...
    Though I wouldn't want to be the first rider om this either. Wouldn't want to be among the first 1,000 riders, actually.

  6. Paypal, Tesla, SpaceX. by Anonymous Coward · · Score: 0

    Holding your money, improperly automating your pilot, blowing up your satellites.

    No thanks, Elon. Electric cars are developing fine without you, NASA was managing the private sector well until Reagan started fucking things up to push an ideology, and Paypal is Paypal.

    1. Re:Paypal, Tesla, SpaceX. by Anonymous Coward · · Score: 0

      Always amusing that his most successful business venture to date remains being a middleman for idiots selling beanie babies to even bigger idiots.

    2. Re:Paypal, Tesla, SpaceX. by frnic · · Score: 1

      Cool, so I am assuming you have done all these things and never has a single failure, I know NASA has never had a rocket blow up or crash...

    3. Re:Paypal, Tesla, SpaceX. by HuguesT · · Score: 1

      The last time a NASA blew up on its landing pad was a Titan 1 in December 1959. Numerous other rockets have blown up in other situations, however on the launchpad during a pretest may be unprecedented.

      I hope SpaceX find out what happened.

    4. Re:Paypal, Tesla, SpaceX. by Anonymous Coward · · Score: 0

      This is like responding to criticism of a dictator with, "Well, how many countries have YOU led without ordering a single massacre?"

    5. Re:Paypal, Tesla, SpaceX. by frnic · · Score: 1

      Not at all, criticizing someone that is accomplishing something without experience or knowledge of the subject is silly at best, criticizing a person for committing atrocities is not the same at all.

      Any progress always is accompanied by some number of failures - Googles policy of fail often fail fast is one of the best development strategies every developed.

    6. Re:Paypal, Tesla, SpaceX. by dave420 · · Score: 1

      Way to shift your goalposts. Proud of yourself for that one?

    7. Re:Paypal, Tesla, SpaceX. by allquixotic · · Score: 1

      Landing pad? "a NASA"? LOL

    8. Re:Paypal, Tesla, SpaceX. by allquixotic · · Score: 1

      "Fail often, fail fast" is a horrible model for the space industry, though. Google's model explicitly includes taking mostly unproven ideas, shipping them in production, and seeing what sticks. Google can do this because the cost of a beta web application launch for Google is essentially zero: they just have to yank a few nodes of the Google Compute Engine cloud off the public cluster and allocate them to the new app. If the product doesn't improve their bottom line in the way they thought it would, they just shut it down and repurpose the hardware for something else.

      You can't do this with rockets. There are external factors like planetary orbit and rotation, a finite number of suitable launch sites (safe, and in the right area of the planet to get it into the desired orbit), our distance from other bodies in the solar system, etc. Then the vehicle itself is stupendously expensive, and carries a lot of expensive payload (in the most extreme case, the payload has immeasurable value -- human lives).

      The loss of a rocket and its payload is akin to a plane crash: if this were a smaller private space company, it would probably spell the end of the company from this singular event alone. But even the largest private space contractor in the world can only take a small number of these severe hits before it will go belly-up.

      You have to mathematically prove out every stage of any rocket launch before you execute, and make sure that (literally) all the planets align to get it just right. If a rocket blows up or fails to complete its mission, it's not just, "oh well" -- it's a medium-term disaster for the company that requires from months to years of strategic corrective action to recover from.

      Rocket science is hard, but the goal should remain "never fail, always get it exactly right" -- not just "let's launch and see if it works; if not, oh well". That kind of thinking is only expedient in software where there are no consequences for failure.

  7. They stupid? by Anonymous Coward · · Score: 0

    Why build such stuff in earthquake prone areas.

    1. Re:They stupid? by jiriw · · Score: 1

      Yes, please. Hyperloop should be safe, even IN earthquake prone areas.

    2. Re:They stupid? by Anonymous Coward · · Score: 0

      Hawthorne isn't an earthquake prone area.

    3. Re:They stupid? by LynnwoodRooster · · Score: 1

      Yeah, that's right! I mean, there are only five fault lines within 3 miles of Hawthorne, and as EVERYONE in the Los Angeles region KNOWS, when an earthquake is more than a mile away, you can't feel it, it does nothing at all.

      --
      Browsing at +1 - no ACs, I ignore their posts. So refreshing!
    4. Re:They stupid? by Anonymous Coward · · Score: 0

      Uhh, I LIVE in Hawthorne, dumbass. There has never been an earthquake here, only in outlying regions. The most we have ever gotten were small bumps from long distance. I have never had so much as a single thing in my house even fall down from one of those "quakes".

      Stop talking about places you don't understand and have never been to.

    5. Re:They stupid? by LynnwoodRooster · · Score: 1

      Hi there, I live in Ventura, and whilst our fault lines are FARTHER away than yours, you can still feel earthquakes, you still get cracks in plaster, and there are still concerns. I guess, though, you think that having lots of faults around you but not IN your little tiny ZIP code means you're immune. Nope. Not true. And that's not including the bigger fault along Palos Verdes, just to your SW. And I go through Hawthorne weekly as I commute down to Costa Mesa once a week...

      --
      Browsing at +1 - no ACs, I ignore their posts. So refreshing!
    6. Re:They stupid? by LynnwoodRooster · · Score: 1

      Oh, and there is a fault line that IS active in Hawthorne, and is capable of a 7.0 quake. It's just a matter of time. But that's OK, you PERSONALLY have never experienced it so you're all safe, right?

      --
      Browsing at +1 - no ACs, I ignore their posts. So refreshing!
    7. Re:They stupid? by Anonymous Coward · · Score: 0

      There are no fault lines in Hawthorne and none of the closest faults are active. I've been here for over 30 years and have experience anything more than a very slight rumble from afar.

      Again, you don't know what you're talking about. I'll trust first hand experience to your wild and informed speculation.

    8. Re:They stupid? by Anonymous Coward · · Score: 0

      Then how come there has never been an earthquake here? And when I say never, I mean as in all of recorded history.

      I have lived in Hawthorne for a long time and we have never felt anything more than the tiniest rumble from earthquakes originating elsewhere.

    9. Re:They stupid? by Anonymous Coward · · Score: 0

      Sure... No earthquakes close to Hawthorne...

      Some data from seismic monitors.. http://scedc.caltech.edu/recen...

      http://earthobservatory.nasa.g...
      http://www.kolotv.com/content/...

    10. Re:They stupid? by LynnwoodRooster · · Score: 1

      Didn't read the article I listed, did you? "In Hawthorne, firefighters were called after a lightpole on Chadron Avenue, near Crenshaw Boulevard, was damaged during the earthquake." There's a reason you post as AC - you've got a box of rocks for a brain...

      --
      Browsing at +1 - no ACs, I ignore their posts. So refreshing!
  8. Oddly enough by Anonymous Coward · · Score: 0

    ...an historical account...

    is correct use of an. ...an unilateral cease-fire...

    is not correct use of an.

    Don't get me started on smarties that ALWAYS use "... and I" when clearly me is needed: ...He came up to my wife and I...

    is not correct. Remove "my wife" and say it again: ...He came up to I....

    WRONG!

    1. Re:Oddly enough by wonkey_monkey · · Score: 1

      Don't get me started on smarties that ALWAYS use "... and I" when clearly me is needed: ...He came up to my wife and I...

      What about smarties who make exaggerated claims about other smarties just so they can show how smart they are?

      "A hyperloop" is correct because it's how people talk, and that's how English comes about. There's no central organising body.

      --
      systemd is Roko's Basilisk.
    2. Re:Oddly enough by 110010001000 · · Score: 1

      What about smarties who spell "organizing" as "organising" just to prove how European they are? Learn to talk American! Love it or leave it!

    3. Re:Oddly enough by Anonymous Coward · · Score: 0

      Whoever taught you English owes you a refund.

    4. Re:Oddly enough by Raenex · · Score: 1

      an historical account...

      is correct use of an

      No, it's garbage. Would you say, "an house"? Then why would you say, "an historical"?

  9. Too Many Wild Grand Visions by segedunum · · Score: 0

    Like all Elon Musk companies. They need to get rockets into space, regularly, before anything else - even before trying ones that they can land and reuse. The Hyperloop stuff is just an enormous distraction, and also impractical. While it would be lovely to have hyperloops going all over the world the massive amount of capital investment in the infrastructure renders it a pipe dream.

    1. Re:Too Many Wild Grand Visions by JamesTRexx · · Score: 1

      That's the current trend in things, technology for technology's sake. Not to solve any real problems.

      --
      home
    2. Re:Too Many Wild Grand Visions by Anonymous Coward · · Score: 0

      Technology for venture capital's sake, you mean.

    3. Re:Too Many Wild Grand Visions by Anonymous Coward · · Score: 0

      Musk doesn't care about being successful in the business sense - he's already a billionaire - he wants to be the world-famous mad genius "visionary" guy that nerdy 14 year old permavirgins worship. Throwing money at engineers and setting them to work on trendy projects or going on TV and gushing about how he'll go to mars in a rocket he doodled on a napkin at lunchtime is all PR bullshit.

      That said, credit where it's due. A service that let people accept credit card payments without the usual red tape that involves *was* a solid idea, and quite a boon to the smalltime second-hand-Elvis-collector-plate dealers of the world.

    4. Re:Too Many Wild Grand Visions by known_coward_69 · · Score: 1

      he's like the Tesla of this generation. 100 years from now there will be documentaries how he invented all this cool shit and stupid us didn't use it

    5. Re: Too Many Wild Grand Visions by Anonymous Coward · · Score: 0

      loopholing to be bank without regulation, yeah thats brilliant.

    6. Re:Too Many Wild Grand Visions by Anonymous Coward · · Score: 0

      Exactly, I can't understand why no-one today makes payments with PayPal, drives Tesla cars, or launches satellites on SpaceX rockets. In 100 years they'll certainly be going "You idiots, how could you ignore this fantastic technology Elon Musk created?".

  10. Hyperloop or "Hyperpoop"? by Anonymous Coward · · Score: 0

    In this era of jihad events, a hyperloop would function quite well as a destruction mechanism if just one person decided to sabotage it. Brilliant design for terrorizing Americans.

    1. Re:Hyperloop or "Hyperpoop"? by Anonymous Coward · · Score: 0
  11. AtTeNtIoN! by Anonymous Coward · · Score: 0

    None of this is true.

    Everything I type is false.

    You believe it anyway.

  12. A vehicle travelling at thousands of mph .... by Viol8 · · Score: 1

    ... in an evacuated tube. What could possibly go wrong?

    Thanks, but I'll stick to flying to go long distance. Its bad enough being stuck in a crowded metro train thats stopped in a tunnel, but at least you could walk out if you had to. Good luck doing that in a vacuum. As for travelling at thousands of mph a few feet from the walls , no thanks Mr Musk.

    1. Re:A vehicle travelling at thousands of mph .... by Anonymous Coward · · Score: 3, Insightful

      A giant tinfoil bird, built to within a hair breadth of strength requirements, cruising in air too rarefied and cold to breath, tens of thousands of feet above the ocean with a couple of glorified leafblowers for engines.

      Thanks but I'll stick to walking to go long distance.

    2. Re:A vehicle travelling at thousands of mph .... by Anonymous Coward · · Score: 0

      "breathe", not "breath", genius. And the difference is very simple, we were able to build airplanes within a few years of the Wright Brothers' flight. It wasn't hype.

    3. Re:A vehicle travelling at thousands of mph .... by Anonymous Coward · · Score: 0

      How long was it between the first attempts at building a glider and the Wright brothers' working powered plane? If we look past the foolish attempts at attaching bird-feathers to people, according to Wikipedia "In 1010 AD English monk Eilmer of Malmesbury flew from the tower of Malmesbury Abbey in a primitive glider. Eilmer was said to have flown over 200 yards (180 m) before landing, breaking both his legs. Eilmer later remarked that the only reason he did not fly further was that he forgot to give his machine a tail."

      So only a few years if you just count the Wright brothers' successful attempt, but hundreds if you look back at unsuccessful attempts through the ages. But what's a few orders of magnitude between friends, eh?

      Yes, the hyperloop has been massively hyped, but that doesn't mean it can't be practical, safe and cost-effective, just give it time, it is still very early days for it right now.

    4. Re:A vehicle travelling at thousands of mph .... by Jeremi · · Score: 1

      Continuously falling forward, only to stop yourself at the last possible moment from landing on your faceby placing a foot into exactly the right spot to counterbalance your ridiculously top-heavy and unstable vertical stance?

      Thanks, but I'll stick to sitting in my chair and eating Cheetos.

      --


      I don't care if it's 90,000 hectares. That lake was not my doing.
    5. Re:A vehicle travelling at thousands of mph .... by Raenex · · Score: 1

      Shoveling food into your mouth, relying on a split-second mechanism to prevent food from entering the wrong pipe and choking you to death? Thanks, but I'll stick to uploading my consciousness to the Internet.

  13. I'm participating by 110010001000 · · Score: 1, Funny

    I am participating and using a NASA-designed EmDrive built by NASA scientists. It can theoretically go to 1c with no external power. We proved this in our NASA tests with NASA scientists. Once we deploy our NASA EmDrive we will unlock the power of the Hyperloop and you can travel from NYC to Los Angeles in under 10 minutes.

    1. Re:I'm participating by Anonymous Coward · · Score: 0

      I won't participate until it's 3D printed in a private space station from privately mined asteroids.

    2. Re:I'm participating by Kjella · · Score: 1

      I am participating and using a NASA-designed EmDrive built by NASA scientists. It can theoretically go to 1c with no external power. Once we deploy our NASA EmDrive we will unlock the power of the Hyperloop and you can travel from NYC to Los Angeles in under 10 minutes.

      Ten minutes? I'm working on the Biological Entity Acceledrated Motion Matter Emission Unified Program and our chief engineer Scotty tells me we can do it in a few seconds. Unless the plot requires that we can't.

      --
      Live today, because you never know what tomorrow brings
  14. Are we allowed to criticize this snake oil yet? by Shane_Optima · · Score: 2

    It's a bit depressing the way so many otherwise intelligent people get starry-eyed about this impractical pipe dream. I get that the idea of a vacuum tube travel is awesome to think about, particularly for long distances, but the hyperloop has all kinds of issues that must be overcome so that... what? So that we can travel at a measly 2x faster than existing Maglev trains on a path that's just a few hundred miles long, in a tube that is much more expensive than Maglev track and is much more vulnerable to accidents or terrorist attacks?

    Meh. Wake me up when they've figured out how to (economically) build a tube that can convey vehicles at 5,000 MPH all the way to Beijing.

    1. Re:Are we allowed to criticize this snake oil yet? by Anonymous Coward · · Score: 0

      More expensive than Maglev?! It's cheaper than a normal HST.

    2. Re:Are we allowed to criticize this snake oil yet? by SlayerofGods · · Score: 1

      It's not the cost of the tube, it's the cost of putting a tube across 1000s of peoples land, crossing rivers and mountains with limited access for machinery, and all the other random things you'll find trying to cross large stretches of land. If you've already set about putting a brand new Maglev train in place; the added cost of simply enclosing it in a large tube isn't likely to be very much in the grand scheme of things.

      --

      Technology, the cause of and solution to all of life's problems.
    3. Re:Are we allowed to criticize this snake oil yet? by Shane_Optima · · Score: 1

      No, it isn't. It really, really isn't. I don't care about whatever pipe dream figures Musk has given. Costs for new tech is always understated, often massively so. Let's look at a few of the details and maybe you could explain, in principle, why the hyperloop should be cheaper:

      Both the hyperloop and Maglev use linear induction motors, and it's worth noting that the majority of energy used in a Maglev is NOT spent on levitating the thing (except at slower speeds.) In addition to the linear induction motors, the hyperloop cars further require a highly specialized, super high RPM jet engine on the nose. Super high RPM engines are cheap and easy to maintain, right?

      Maglev track, while not cheap, has relatively loose tolerances and is extremely durable. Airtight tubes running for hundreds of miles are an unprecedented engineering challenge and it's laughable to pretend the full cost figures on that undertaking can be known. Yes, these tubes can (supposedly) be placed in locations where the Maglev track cannot, but the Maglev can haul many more people than the proposed hyperloop cars (and cost per person transported per year is what matters here, not the gross cost.)

      This last point is the only even quasi-plausible explanation I've heard for the supposed cost-effectiveness of the hyperloop. But if it's true that we can run it alongside existing interstate highway land (and that this translates into massive savings) then that's where we should be focusing our attention. There are surely more conventional tracked vehicles that could be redesigned to take advantage of this cost savings. Trying to shave 30 minutes off of a commute by miniaturizing your Maglev train and then sticking it in an airtight tube and then sticking a jet engine on the front, and then expecting the tube to never be damaged in a car crash or terrorist attack seems... a bit less reasonable.

    4. Re:Are we allowed to criticize this snake oil yet? by Shane_Optima · · Score: 1

      If you've already set about putting a brand new Maglev train in place; the added cost of simply enclosing it in a large tube isn't likely to be very much in the grand scheme of things.

      It's all very well and good for you to say that, but if that's true then why haven't they done so? The concept of a vacuum tube train isn't a new one.

      You should watch the youtube video I linked. I'm not certain that every single one of Thunderf00t's criticisms are 100% valid, but they certainly seem plausible (and problematic) enough, and several of them had occurred to me long before I saw his video. Do you really think that 350 miles of airtight tubing at that diameter and capable of withstanding heat expansion isn't going to be expensive? Do you think the ultra high RPM jet engine on the nose of the thing (which the hyperloop car must have in addition to the linear induction motor) is going to be cheap and maintenance-free? Have you done the back-of-the-envelope estimates like Thunderf00t has to see what happens when a hyperloop car traveling at 600 MPH slams into thousands of pounds of air that will come rushing down the tube in the event of a breach?

    5. Re:Are we allowed to criticize this snake oil yet? by LynnwoodRooster · · Score: 1

      Given that HST is going to cost at LEAST $70 billion in California, and the path under the mountains isn't even decided (not just where it could go, but if it could EVEN be made), and that a Hyperloop would face the same challenges, of not more so, because of the elevated nature of the track - no way in Hell that a Hyperloop from SF to LA comes in under $500 billion. Best case.

      --
      Browsing at +1 - no ACs, I ignore their posts. So refreshing!
    6. Re:Are we allowed to criticize this snake oil yet? by Anonymous Coward · · Score: 0

      Airtight tubes running for hundreds of miles are an unprecedented engineering challenge and it's laughable to pretend the full cost figures on that undertaking can be known.

      Don't forget the massive air pumps required to pump hundreds of miles of tubes down to near vacuum. Advocates seem to hand-wave their cost and power consumption as inconsequential.

    7. Re:Are we allowed to criticize this snake oil yet? by Anonymous Coward · · Score: 0

      Please go and actually read the presentation about the technology instead of trusting what some random person says on youtube.. There are so many errors in what that person is saying it's not even funny..

    8. Re:Are we allowed to criticize this snake oil yet? by pakar · · Score: 1

      Actually, if you put the whole thing in a tube that you put on big posts so it floats up in the air will still allow the land below to be used for farming..

      The farmer would probably be quite happy getting paid for those small chunks of land where the posts go..

      The farmer will probably not be too happy when he realizes that the maglev train will cut his farmland in two and he will have to drive for 30 minutes to get to the other side.

    9. Re:Are we allowed to criticize this snake oil yet? by Shane_Optima · · Score: 1

      As I said elsewhere, I'm not sure 100% of what he says is correct but most of it seems to be on-point criticism. One big thing a lot of people criticized Thunderf00t for was saying "vacuum" when it's actually 1/1000th of sea level atmosphere, which is an extremely pedantic and stupid objection as it changes nothing about his back-of-the-envelope calculations.

      The big takeaways I saw: 1. Strong, expansion-resistant pipe is not going to be cheap, 2. A high-RPM jet engine on the nose of the thing isn't particularly cheap or conducive to reliability, 3. The forces created during a breech are significant and dangerous, which seems particularly relevant if the pipe is going to be near major highways. The three of these issues combined cast extreme doubt on the assertions that this thing would be cheaper or more convenient than other rail transport systems.

      I suspect these points aren't addressed in Musk's cotton candy press releases.

  15. What a boondoggle by Anonymous Coward · · Score: 0

    The whole hyperloop concept is a boondoggle. It'll never happen and it's a giant waste of money.

    Let's just say this works and I'm sure it will, as the engineering of vacuum tubes has been known for nearly a century (for those of you older folks, this is just an evolution of the system we used before ATMs when you deposited your check at your drive-up bank into a vacuum tube system to the bank teller).

    Then they try to build it. The infrastructure alone will cost $100B. I get that number because I anticipate that building a sealed tube is going to be a lot more expensive than high speed rail tracks, and the cost of the high speed rail project in California is now estimated at $68.4B. The steel alone will be very hard to come by, because while rail steel and ribar is made in tremendous volume, this requires plate steel that is then rolled by a steel fab. There's a decent infrastructure around this type of work supporting the wind energy business, but the capacity of this industry is probably 1/10th of what it needs to be to produce the volume of steel required for hundreds of miles.

    Then there's the regional politics to deal with. Building a Hyperloop from LA to San Fran will run through the cities or counties of at least 6 and as many as 9 municipalities depending on the route you choose. Those cities/counties by law have complete control over permitting rights and every single one of them will deny a permit unless they get some benefit from the system; they will not allow a giant tube to run through their counties and their constituents see no benefit. The most likely scenario, and this is what is killing the high speed rail, is a station in each of their counties so that they're connected to the system and they gain the economic benefits of greater transportation. However, if you drop a station in each county, that means the Hyperloop would have to speed up and slow down 6 to 9 times before reaching LA or San Fran, so there's absolutely no way you can make the trip in 45 minutes. You could probably build side tracks for each one so they can leave the loop and not interfere with the direct travel pods, but that adds more infrastructure cost and will result in less economic impact to each county than if it made a full stop, so that means there's heavy negotiations. This is all to say nothing of the environmental impact studies and god knows what other studies.

    Then there's the power. Musk likely dreams he can cover it in solar panels and power it with just sunlight but that's an extraordinarily unlikely scenario; the power needs on this are going to be tremendous. Accelerating the pods won't take much, but maintaining the vacuum will as will the cooling; running a giant steel tube for several hundred miles will make the thing so hot it'll roast the passengers alive. So the cooling needs will be tremendous. Theorhetically you could solve this with solar thermal power generation laid into the track, but then that adds additional cost.

    Then there's the maintenance of such a long infrastructure; it'll be huge. Steel erodes in direct sunlight as anyone who's worked with solar panels in the desert knows, and corrosion protection just isn't up to snuff; cold spray is ok but it's not a panacea and it requires constant respraying to work. Let's be generous and assume 1% of the project cost per year to maintain it; you're still at $1B per year just in infrastructure maintenance.

    So $100B plus around $1B per year in maintenance, a huge drain on the power grid, all to shave maybe an hour (when factoring airport wait times and flight time) off of a flight from LA to San Fran that costs $120 on Southwest, and you might not even save that time when you're done negotiating with the municipalities. Even at comparable prices to the lowest cost airfare, you need 8 to 10 million people using the system per year and you MIGHT break even on the maintenance costs, but you need at least 20 million people using the system to pay the maintenance and pay back the investment in infrastructure in at least 10 years.

    The economics and politics of this simply don't make sense; it's never going to happen.

    1. Re:What a boondoggle by Rei · · Score: 2

      I will only comment on Hyperloop Alpha. The new "Hyperloops" in the competition have nothing in common with it, and I'm not going to bother with them.

      Let's just say this works and I'm sure it will, as the engineering of vacuum tubes has been known for nearly a century

      Hyperloop is not a vactrain.

      (for those of you older folks, this is just an evolution of the system we used before ATMs when you deposited your check at your drive-up bank into a vacuum tube system to the bank teller).

      No, those are pneumatic tubes, which are neither nor vactubes nor Hyperloop.

      Don't you think you should at least know what you're talking about before you start criticizing something?

      The infrastructure alone will cost $100B. I get that number because I anticipate that building a sealed tube is going to be a lot more expensive than high speed rail tracks

      1) Explain why rail tracks are the best analogy for building a Hyperloop tube, as opposed to, you know, actual long tubes.
      2) Explain why Hyperloop should cost anywhere near that much when actual pipeline costs, per unit cross section, are well in line with Hyperloop.

      There are of course, differences, but they fall on both sides. For example, comparing to oil pipeline, Hyperloop requires much greater straightness, high wall smoothness, and accelerator segments. An oil pipeline deals with a higher pressure differential, deals with much more challenging environmental/permitting issues, higher power pumps and has thermal management challenges not faced by Hyperloop. I could keep going on both sides, of course.

      , and the cost of the high speed rail project in California is now estimated at $68.4B.

      Rail isn't a pipeline.

      If you want to go into some of the reasons for the differences in cost:

      1) HSR does more. Hyperloop is a straight shot between two cities. HSR has stops. These stops involve going through towns. This is very expensive. It also means more stations. These too cost money. HSR is also higher capacity (although Hyperloop is in turn higher capacity than LA/SF air traffic, and significantly cheaper per ticket than both rail and air)

      2) HSR is hurt by its path. A large portion of HSR's costs are permitting and right of way. Hyperloop minimizes these by using public right of way with elevation, on a premise of government buy-in to the concept (although other options not considered in the Alpha document are possible, such as rail right-of-ways). HSR's need to serve specific cities for political purposes limits where it can go.

      3) HSR is limited by its weight. The cost of elevating a structure is directly proportional to its peak loadings. HSR's peak loadings are an order of magnitude higher than Hyperloop's.

      The steel alone will be very hard to come by,

      Not in the very least. They budget several times the billet price, on the high end of the tonnage price for delivered tube segments. It's really not that much steel - subtract the inner cross section from the outer cross section and multiply the length if you don't believe me.

      because while rail steel and ribar is made in tremendous volume,

      The word is "rebar". Rebar is irrelevant to this conversation. There is no single type of "rail steel", particularly when one is discussing HSR.

      this requires plate steel that is then rolled by a steel fab

      That is not how pipelines are made. Pipelines are made of extruded tubular steel segments, the same as "ribar" and "rail steel".

      Then there's the regional politics to deal with. Building a Hyperloop from LA to San Fran will run through the cities or counties of at least 6 and as many as 9 municipalities depending on the route you choose.

      What do yo

      --
      "99 dead duelists of Dios on the wall. 99 dead duelists of Dios! Take one's ring, pass it around..."
    2. Re:What a boondoggle by Anonymous Coward · · Score: 0

      Your analogies are total BS, and i do know what I'm talking about. I've worked in shipbuilding and metal fab and construction a long time.

      Pipelines are nothing compared to transportation. The cost is in the regulatory stuff that comes up. Rail doesn't impede the movement of animals across it. A pipe will. The environmental impact studies will bury the project in cost. You could put it up on struts to allow migration, but that increases the engineering and production cost significantly. Pipelines are either under ground or above ground on struts and they're light compared to the weight of what this will require.

      A pipeline is a stupid analogy. Pipelines are at most 4' in diameter; that can be made in modern pipe fabrication facilities and there are hundreds of those. This isn't a pipeline, this is a rolled steel tube that at it's smallest will need to be 8' in diameter, more likely 10' or 12'. The facilities that are capable of producing those only build either wind turbine towers or ships. The capacity doesn't exist in the US, and the cost to make it in China or Korea and ship it here would bury the project in cost.

      You don't know what you're talking about regarding steel. While there are different alloys of steel such as stainless or various types of carbon steel, the shape you buy it in matters too; the different shapes have different demands and different prices and different suppliers and different capacities. The main types are plate, rod, tube, pipe, sheet, and structural but there are others. Pipe usually goes up to 6", sometimes you can find as high as 12" and in the oil and gas you can occasionally get up to 48" but those are speciality suppliers only supplying major pipeline projects. No one makes pipe as big as the Hyperloop would require, so it has to be fabricated by buying plate steel and then rolling it with a press, which is exactly how all big pipelines or wind towers are made. The capacity is less than 1/10th of this. You quote tube pricing but tube pricing is inappropriate; tube steel is typically at most 1/4' thick and not always rigid and rarely larger than 2 to 3" in diameter. Pipe steel can't be bought in a large enough diameter, so it's only plate that will work. Again, having sourced steel before, A36 plate is marine plate and probably a bit excessive for this project but a good starting point, adn the price of that is right now the around $600 per ton overseas and around $1,200 per ton sourced locally from places like Oregon Steel Works.

      And if you think steel does not corrode in sunlight then you don't know the first goddamned thing about steel. Here is a published study from 1961 showing that the UV light of natural sunlight CORRODES steel. http://corrosionjournal.org/doi/abs/10.5006/0010-9312-17.6.93 It is this specific problem why there is a whole business around corrosion resistance of steel

      And all your comments on the politics of this are absolutely fucking wrong. I've been in California my whole life and seen multiple high speed rail projects come and go and fail at the municipal level, Hyperloop will face the exact same problem. http://resources.schoolscience.co.uk/Corus/16plus/steelch3pg4.html

      I don't give a crap about what line those guys drew on a map. High Speed Rail did the same thing, then changed it 8 times as they went through the permitting and site studies. Those studies are expensive so there's no way anyone contemplating a Hyperloop has done those yet. Just because htey drew a line on a map doesn't mean they have that route locked down; it WILL change.

      You've clearly never executed a real project before, and know nothing about construction. Enjoy reading on the internet, then go work for Bechtel and see the reality of major projects like this.

    3. Re:What a boondoggle by Rei · · Score: 1

      Your analogies are total BS, and i do know what I'm talking about.

      Until you've actually read the proposal, which thusfar you have demonstrably not read, then you don't know one iota about the subject, and I'm not going to read another word you write. For the simple reason that I'm not going to waste my time arguing with a person about a subject that they can't be bothered to learn even the most fundamental aspects of..

      Let me know when you've actually read it in its entirity, then get back here and we can talk.

      --
      "99 dead duelists of Dios on the wall. 99 dead duelists of Dios! Take one's ring, pass it around..."
  16. Artist's rendition. by fahrbot-bot · · Score: 2

    Apparently, the test track will be orange with banked curves and an actual loop.

    --
    It must have been something you assimilated. . . .
  17. Whats with all the Luddites here by johncandale · · Score: 2

    Everything seems unsafe till its proven safe. High speed ground transport is needed. And this would be much more effececit then auto cars once they get the bugs out..

    1. Re:Whats with all the Luddites here by Raenex · · Score: 1

      If private companies want to invest in an expensive boondoggle, that's fine with me. I just hope they don't fleece taxpayers with these pipe dreams.

      You think it's practical and economical to build? Ok, but use your own money, charge a toll, and.... profit!

  18. Re: Are we allowed to criticize this snake oil yet by Anonymous Coward · · Score: 0

    That's why they're building test tracks and not a full scale prijev