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New York To LA In 45 Minutes?

Hits: 6359 | Rating: (3.3) | Category: Misc. | Added by: ElectricEye
Page: 1 2 Next >   Jump to: Bottom    Last Post
liabach
Male, 40-49, Western US
 873 Posts
Monday, June 10, 2013 10:16:11 PM
I love ass-bags unconditionally.

Musuko42
Male, 18-29, Europe
 2824 Posts
Monday, June 10, 2013 5:32:20 AM
This is a dream of the future from the previous age. Telecommunications (primarily, the internet) reduced much of the need for high-speed travel.

I suspect what need that does remain is unlikely to be large enough to fund such an expensive venture.

MrAtari
Male, 30-39, Europe
 1374 Posts
Monday, June 10, 2013 3:12:14 AM
@fancythat: yes you can, but it will slow the train down by about 20 MpH (per queen)

fancythat
Male, 30-39, Eastern US
 1939 Posts
Sunday, June 09, 2013 7:41:55 PM
Sure, but can you fit a fat Mississippi queen in it?

Angilion
Male, 40-49, Europe
 11286 Posts
Sunday, June 09, 2013 11:47:46 AM
I love the ass-bags talking about "if this thing crashes." Ever been on an airplane?


Ever been on a maglev train travelling at 6500 Km/h inside a narrow tunnel?

Comparing two very different situations is rarely a good argument.

lukeforv123
Male, 18-29, Western US
 1044 Posts
Sunday, June 09, 2013 11:32:46 AM
I love the ass-bags talking about "if this thing crashes." Ever been on an airplane?

Angilion
Male, 40-49, Europe
 11286 Posts
Sunday, June 09, 2013 10:16:16 AM
Constant acceleration of 1G is not uncomfortable. It's literally the same as you pop your seat down to 45 degree angle.


Bugger, I was wrong. I was adding 1g to the 1g from gravity and therefore thinking about a force that is actually 2g. Which, as you point out, is wrong.

Although...wouldn't you need to be flat on your back to get 1g acting from your front to your back, not at 45 degrees?

Angilion
Male, 40-49, Europe
 11286 Posts
Sunday, June 09, 2013 10:12:18 AM
For comparison, below is a video of a 700 mph collision between a light rocket sled and a car against a wall. Note that this is *far* less force than one of these trains crashing would be - the velocity is 6 times less and the mass is much less. 0.5mv^2, so this crash would have 1/36th of the force even if the masses where the same and they aren't - the backstop in this video moved a lot more than an underground tunnel would do and the sled is probably much lighter than a train capsule. I'd be surprised if the force in this collision is as much as 1% of the force of one of these capsules crashing.

Mythbusters crash a car

Angilion
Male, 40-49, Europe
 11286 Posts
Sunday, June 09, 2013 10:11:36 AM
Okay, if when this thing crashes, we would all die, as opposed to being gravely injured and disabled, then, okay. Otherwise, pass.


If you crash a vehicle that's essential a train carriage into anything solid with an impact speed of 6500 Km/h, you'd need a lot of careful DNA analysis to seperate the bits of whoever was inside because all the passengers are going to be smashed to paste and mixed together into a very small space.


auburnjunky
Male, 30-39, Southern US
 9987 Posts
Sunday, June 09, 2013 9:10:01 AM
Bugatti Veyron from 0 to 100 km/h in 2.4 s, has g force = 1.18 g

Bugatti Veyron from 100 to 0 km/h in 2.3 s, has g force = 1.3 g, with an additional 0.6 g support by the rear spoiler.

So, a sporty car (the sportiest) comes nowhere close to 4g.

I got those figures from Bugatti,
and from this website which was quite informative. It also says Top Fuel drag racing world record of 4.4 s over 1/4 mile, g force = 4.2 g

CreamK
Male, 40-49, Europe
 1016 Posts
Sunday, June 09, 2013 2:42:07 AM
"Also, the figures for their pie in the sky seem quite wrong. A sporty road car can't accelerate at 4g. Not even close. An F1 car can accelerate at ~1.5g and they're pretty extreme. You'd need a top fuel dragster to get 4g acceleration. On top of that, a sustained acceleration of 1g is uncomfortable and 3 minutes of it would be necessary to reach 6500Km/h. "

I'm betting it's the braking, ie deceleration not acceleration. F1 canadian GP starts in few hours, in the hairpin brake they are doing over 5G. So does a normal car, deceleration is ~1g easily.

Constant acceleration of 1G is not uncomfortable. It's literally the same as you pop your seat down to 45 degree angle.

10Bears
Male, 30-39, Europe
 360 Posts
Sunday, June 09, 2013 1:39:56 AM
So you take a tube thousands of miles long, and somehow suck all the air out of it without it collapsing. Yeh, that sounds feasible.

Nickel2
Male, 50-59, Europe
 4427 Posts
Sunday, June 09, 2013 1:03:09 AM
Early trials took place in 1864, Crystal Palace pneumatic railway:


SavageChef
Female, 50-59, Western US
 2089 Posts
Sunday, June 09, 2013 12:37:15 AM
Okay, if when this thing crashes, we would all die, as opposed to being gravely injured and disabled, then, okay. Otherwise, pass.

AvatarJohn
Male, 30-39, Southern US
 986 Posts
Saturday, June 08, 2013 9:34:29 PM
Of course this would work! I saw it on Futurama! And at my local bank (on a much smaller scale).

handimanner
Male, 70 & Over, Western US
 1805 Posts
Saturday, June 08, 2013 8:48:46 PM
and it sucks the lint right out of your navel at the same time.

carmium
Female, 50-59, Canada
 6389 Posts
Saturday, June 08, 2013 6:27:51 PM
Unfeasible schemes like this pop up fairly regularly. Thanks for the reality check, Angilion.

drips
Male, 30-39, Eastern US
 879 Posts
Saturday, June 08, 2013 6:13:06 PM
Wow! A fully CGI presentation with no explanation of technical or financial considerations?!? Seems legit.

Angilion
Male, 40-49, Europe
 11286 Posts
Saturday, June 08, 2013 6:01:46 PM
Is this even remotely possible with current technology? Merely making a vacuum thousands of miles long under oceans seems a little ambitious.

Also, the figures for their pie in the sky seem quite wrong. A sporty road car can't accelerate at 4g. Not even close. An F1 car can accelerate at ~1.5g and they're pretty extreme. You'd need a top fuel dragster to get 4g acceleration. On top of that, a sustained acceleration of 1g is uncomfortable and 3 minutes of it would be necessary to reach 6500Km/h.

Any flaw would of course result in catastrophic destruction not just of the capsules but of the tubes.

I think it's not even close to being viable any time soon. It's efficient in theory, sure, but so is teleportation.

drawman61
Male, 50-59, Europe
 5504 Posts
Saturday, June 08, 2013 4:52:45 PM
Governments: "Cheaper to run means less profits means less cuts for us. Application denied!"

CreamK
Male, 40-49, Europe
 1016 Posts
Saturday, June 08, 2013 4:50:12 PM
Never gonna happen, it's too efficient.

SephirothA83
Male, 18-29, Midwest US
 962 Posts
Saturday, June 08, 2013 4:43:44 PM
coming in the year 2237

lukeforv123
Male, 18-29, Western US
 1044 Posts
Saturday, June 08, 2013 4:34:28 PM
That would change everything.

keith2
Male, 18-29, Midwest US
 2551 Posts
Saturday, June 08, 2013 4:03:57 PM
It'll never happen.

skypirate
Male, 18-29, Southern US
 2042 Posts
Saturday, June 08, 2013 3:54:09 PM
sounds cool for the shipping industry. screw 3-5 days, i want 3-5 hours.

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