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Tias posted:I never actually realized that people who couldn't tell Danes and Dutch apart existed in real life Just a joke reference to the dear departed aqua swim animated show Metalocalypse where the Swedish lead guitarist confuses Danes for Dutch  Also stay off our filthy arctic rocks or else we will ask again!!!
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Oct 21, 2018 16:43
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Cyrano4747 posted:I don't think it would be catastrophic, it would just stop working. You're only talking 1 atmosphere of pressure differential between 100% vacuum and sea level. It's not going to be like poking a hole in a sub that's 500 meters down (approx 50 atmospheres). Okay, that's less fragile than I had assumed, thanks for clearing it up. I guess I was just thinking that it sounds really expensive and fragile at the same time. The vacuum needed for the loop to function has to be maintained, after all. darnon posted:If your plans of diabolical sabotage necessitate a drilling rig I feel like there are simpler, more effective methods of terrorism you could be engaging in. According Wolvertons criticism, the problem is two-fold: Because the system is so novel, it will attract more interest as a terrorist target (which seems hard to prove), but that actually sabotaging the system could easily be done in ways that have catastrophic consequences. He gives the example that you could cause a power outage just when a capsule was rocketing through the tube and strand it ten miles from the nearest city, which seems much more reasonable and the kind of contingency dorks like Musk don't even want to consider, b/c then he'd have to plan for it.
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Oct 21, 2018 20:47
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Pretty sure it'd be a hard sell for Hyperloop passengers to hear "in the event of a stoppage while underground, please don't try to exit the cabin as there's no air in the tunnel - wait for hours for us to come and get you."
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Oct 21, 2018 20:51
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BIG HEADLINE posted:Pretty sure it'd be a hard sell for Hyperloop passengers to hear "in the event of a stoppage while underground, please don't try to exit the cabin as there's no air in the tunnel - wait for hours for us to come and get you." Inward-opening doors like airplanes.
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Oct 21, 2018 20:58
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I like some this thread can’t conceive that an electric low pressure tube underground is a safer and less expensive form of transit than flying through the air and that someone called me an idiot for suggesting so. Subways exist and rail exist and 375mph mag lev trains exist and Japan’s bullet train has had 0 injuries or fatalities since 1964. Yes there are new failure modes, with plenty of mitigation solutions, for the low pressure, higher speed tube, but a plane is not the safer and cheaper basic concept.
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Oct 21, 2018 21:10
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My personal take on hyperloop: we as a country refuse to invest in conventional high speed rail, or even maintain our standard tracks to an adequate degree; do you really think we're going to invest in one that requires pressurization and/or tunneling?
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Oct 21, 2018 21:14
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BIG HEADLINE posted:Pretty sure it'd be a hard sell for Hyperloop passengers to hear "in the event of a stoppage while underground, please don't try to exit the cabin as there's no air in the tunnel - wait for hours for us to come and get you." I've been stuck on a train for 1.5 hours - nobody tried to open a door. There's also been planes that have been stuck on the tarmac for hours, and doors remained closed. This isn't something new or novel.
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Oct 21, 2018 21:18
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Fender Anarchist posted:My personal take on hyperloop: we as a country refuse to invest in conventional high speed rail, or even maintain our standard tracks to an adequate degree; do you really think we're going to invest in one that requires pressurization and/or tunneling? Rail tracks in the US are, by and large, privately owned and kept up to the necessary standard to carry freight traffic. It would be inappropriate to spend taxpayer money maintaining them, although that happens anyway. As mentioned above, high speed rail doesn't make sense when airline tickets are cheap and don't require exercising eminent domain.
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Oct 21, 2018 21:20
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TCD posted:I've been stuck on a train for 1.5 hours - nobody tried to open a door. There's also been planes that have been stuck on the tarmac for hours, and doors remained closed. Yeah, but you can open a window and get air on a train, and see out of both a plane and train. All I've heard with regards to the interior of a Hyperloop cabin are screens on the walls, and it would stand to reason that the cabins would have to be equipped with a pressurized oxygen system since there's no way they're getting it from inside the vacuum tube.
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Oct 21, 2018 21:24
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The idiotic thing is the prospect of THOUSANDS of miles of vacuum sealed tunnels being dug and blasted across the country. You loving idiot. "It's completely impossible to build high speed rail infrastructure in this country, so let's DIG THOUSANDS OF MILES OF loving TUNNELS, SUCK ALL THE AIR OUT OF THEM, AND DO THAT INSTEAD! That's definitely way cheaper and more politically feasible and not a complete idiot boondoggle dreamed up by a rich dumbass."
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Oct 21, 2018 21:48
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Fender Anarchist posted:My personal take on hyperloop: we as a country refuse to invest in conventional high speed rail, or even maintain our standard tracks to an adequate degree; do you really think we're going to invest in one that requires pressurization and/or tunneling? Where are you getting the idea what "we as a country" are investing in hyperloop? hailthefish posted:"It's completely impossible to build high speed rail infrastructure in this country, It's not impossible, it's just dumb and unnecessary.
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Oct 21, 2018 21:56
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(hyperloop is never happening)
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Oct 21, 2018 22:33
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https://www.youtube.com/watch?v=Vb-sKcHJ67E
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Oct 21, 2018 22:56
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BIG HEADLINE posted:Pretty sure it'd be a hard sell for Hyperloop passengers to hear "in the event of a stoppage while underground, please don't try to exit the cabin as there's no air in the tunnel - wait for hours for us to come and get you." This is a weird thing to fixate on. It’s 1 ATM. They’ll open some valves and pressurize the tube. This isn’t a intractable engineering conundrum. In an emergency where people couldn’t just chill in the cars I’m guessing that they would let air in and evacuate like any subway. Again don’t consider this an endorsement of hyperloop. There are all sorts of issues with it but people find the oddest poo poo to lean on when insisting that it’s stupid.
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Oct 21, 2018 23:10
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Cyrano4747 posted:This is a weird thing to fixate on. It’s 1 ATM. They’ll open some valves and pressurize the tube. This isn’t a intractable engineering conundrum. In an emergency where people couldn’t just chill in the cars I’m guessing that they would let air in and evacuate like any subway. Its not simple to "just let air in" to a many hundred miles long pressure chamber.
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Oct 21, 2018 23:12
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Like I don’t think people understand just how unexceptional a vacuum is. Every thermos has one. You can create a vacuum chamber of your own with poo poo you can buy at Home Depot. The challenge will be keeping the tube leak free enough to maintain reasonably close enough to a vacuum for the low drag poo poo to work out. It’s unlikely to happen because it would be a huge infrastructure project on the order of building a subway from SF to LA, not because the crazy sci fi tech is going to kill people the second they have a minor malfunction.
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Oct 21, 2018 23:15
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hobbesmaster posted:Its not simple to "just let air in" to a many hundred miles long pressure chamber. You’re assuming that it would be one single pressure vessel. I suspect that it would be segmented for a while host of reasons.
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Oct 21, 2018 23:17
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hailthefish posted:The idiotic thing is the prospect of THOUSANDS of miles of vacuum sealed tunnels being dug and blasted across the country. You loving idiot. This mostly isn’t a thread where we call people loving idiots for gently disagreeing with us so don’t poo poo it up. That said you mostly post about making GBS threads on the marine corps, any new military development and any country not pursuing military development, so maybe get therapy? If a hyperloop can recoup its money in a few years selling a $75 each way ticket from SF to LA that takes less than 3 hours, it’s a great idea. There doesn’t need to be much politics about it if its privately funded, underground, etc. as is currently proposed.
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Oct 21, 2018 23:24
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Get murdered. (USER WAS PUT ON PROBATION FOR THIS POST)
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Oct 21, 2018 23:32
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Cyrano4747 posted:You’re assuming that it would be one single pressure vessel. I suspect that it would be segmented for a while host of reasons. So during each trip its constantly accelerating and decelerating, coming to a stop and waiting to switch chambers?
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Oct 21, 2018 23:34
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Glad trains are causing a really dumb meltdown.
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Oct 21, 2018 23:40
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CarForumPoster posted:This mostly isn’t a thread where we call people loving idiots for gently disagreeing with us so don’t poo poo it up. That said you mostly post about making GBS threads on the marine corps, any new military development and any country not pursuing military development, so maybe get therapy? Bingo. If we can make passenger terminals less of a pain in the rear end than commercial air, I'm all over it. Right now I make the 7 hr drive from Vegas to SLC about once a month, because by the time I deal with both airports it takes the same amount of time, and the cheaper airfare (vs gas) is more than offset by not needing a rental for the weekend. Not that I actually expect it to actually work, though.
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Oct 21, 2018 23:48
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hobbesmaster posted:So during each trip its constantly accelerating and decelerating, coming to a stop and waiting to switch chambers? More likely you would just have the doors to the next chamber already open and then close the doors as soon as the train is through.
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Oct 21, 2018 23:49
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I'm not holding out hope for the hyperloop. Most of what I hear about it are promises from Musk about what it can or will do. We'll have the car move on skates. Drive your car in and zoom your car is transported over a hundred miles an hour under the city! No, nevermind, but we promise to have one from a parking lot two miles away from Dodger Stadium to the Stadium open by 2020. But it'll only be one way for reasons. Also my Tesla semi-truck, sending people in orbit around Earth, total autopilot, Tesla paying its creditors, and a mission to Mars are all going to happen reallllly soon.
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Oct 22, 2018 00:08
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Whether or not the hyperloop is a dumb idea, time will tell, it's going to built regardless. Once they finish testing the prototype in Nevada, they're already set-up to start building the test platform in Texas going from Dallas to Austin.
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Oct 22, 2018 00:42
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Here's a cool train-related image someone posted in C-SPAM.
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Oct 22, 2018 00:53
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Back Hack posted:Whether or not the hyperloop is a dumb idea, time will tell, it's going to built regardless. Once they finish testing the prototype in Nevada, they're already set-up to start building the test platform in Texas going from Dallas to Austin. It's giving me the same vibe as the xth kickstarted console.
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Oct 22, 2018 01:01
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AIRPOWER/Cold War - Not shown: passenger suffocation
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Oct 22, 2018 01:08
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Tias posted:I never actually realized that people who couldn't tell Danes and Dutch apart existed in real life When I was doing my undergrad, several members of the university's history society protested the unlawful and barbaric seizure by those criminal Danes by burning a bunch of danish pastries in front of the nearest Danish consulate. I am given to understand that the matter escalated rapidly after that, with the consulate staff being invited out to a local bar and compelled to drink Molson and Labatt products. Cyrano4747 posted:Like I don’t think people understand just how unexceptional a vacuum is. Every thermos has one. You can create a vacuum chamber of your own with poo poo you can buy at Home Depot. The challenge will be keeping the tube leak free enough to maintain reasonably close enough to a vacuum for the low drag poo poo to work out. Yeah, it's not hard. I have a small vacuum chamber that I use for degassing resin prior to casting things. Fearless fucked around with this message at 01:19 on Oct 22, 2018 |
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Oct 22, 2018 01:16
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TCD posted:I've been stuck on a train for 1.5 hours - nobody tried to open a door. There's also been planes that have been stuck on the tarmac for hours, and doors remained closed. https://www.dailymotion.com/video/x5dibn4
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Oct 22, 2018 01:35
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CarForumPoster posted:There doesn’t need to be much politics about it if its privately funded, underground, etc. as is currently proposed. In the alternate scenario where all or some of them tell Musk to piss up a rope and then he tries to get them all eminent-domained, there would be no politics involved at all. Godholio posted:If we can make passenger terminals less of a pain in the rear end than commercial air, I'm all over it. Do you really think that there'd be no TSA security screenings and no baggage checks for a hyperloop? I doubt it.
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Oct 22, 2018 01:57
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Craptacular posted:Do you really think that there'd be no TSA security screenings and no baggage checks for a hyperloop? I doubt it. You can't fly it into a building, so maybe not? Is TSA screening required for cruise ships or (more relevant) trains?
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Oct 22, 2018 03:05
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Buttcoin purse posted:Is TSA screening required for cruise ships or (more relevant) trains? TSA screening is required for Amtrak. My baggage has been frisked before when traveling from Philly to Boston. e: It does seem to be a much more "targeted/random screening" approach than the force everybody through the backscatter machine you get at the airport. Have fun taking guns on the train though, the list of rules & regulations is loving longer than for airplanes. Hooray for federal government, etc.
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Oct 22, 2018 03:08
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OWLS! posted:TSA screening is required for Amtrak. My baggage has been frisked before when traveling from Philly to Boston. I don't know how strict this is. I occasionally take the Milwaukee to Chicago and both ways you can just hop on the train.
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Oct 22, 2018 03:10
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I didn't go through any kind of screening when I went from Toledo to Chicago, either.
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Oct 22, 2018 03:11
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I don't recall the last time I was asked for a ticket on the metrolink, much less asked to open my bags for a bomb search.
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Oct 22, 2018 03:16
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Never been scanned or frisked in SF or LA.
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Oct 22, 2018 04:04
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OWLS! posted:TSA screening is required for Amtrak. My baggage has been frisked before when traveling from Philly to Boston. I've never been screened on either NEC or Acela, that I can recall.
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Oct 22, 2018 06:27
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Mortabis posted:Rail tracks in the US are, by and large, privately owned and kept up to the necessary standard to carry freight traffic. It would be inappropriate to spend taxpayer money maintaining them, although that happens anyway. As mentioned above, high speed rail doesn't make sense when airline tickets are cheap and don't require exercising eminent domain. they do unless you want a collapse of the ecosystem? Fearless posted:When I was doing my undergrad, several members of the university's history society protested the unlawful and barbaric seizure by those criminal Danes by burning a bunch of danish pastries in front of the nearest Danish consulate. I am given to understand that the matter escalated rapidly after that, with the consulate staff being invited out to a local bar and compelled to drink Molson and Labatt products. Good thing they weren't hosed up from watching hockey, then 
Tias fucked around with this message at 11:14 on Oct 22, 2018 |
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Oct 22, 2018 11:12
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TSA has repeatedly tried to elbow their way into regular searches/screening on domestic rail, but Amtrak keeps raising hell and getting it shut down because the lack of a security line is pretty much their single remaining advantage over air travel.
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Oct 22, 2018 11:55
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