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(The Atlantic)   We would likely need plenty of barf bags if we were to fly from NY to Shanghai in less than an hour on Elon Musk's proposed Earth transport system   ( theatlantic.com) divider line
    More: Interesting, BFR, LIGO, flight attendants, BFR's flight, not-yet-built system-which Musk, giant rocket awaits, founder Elon Musk, rocket travel  
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1524 clicks; posted to Geek » on 04 Oct 2017 at 9:20 AM (10 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



41 Comments     (+0 »)
 
View Voting Results: Smartest and Funniest
 
2017-10-04 08:36:49 AM  
Stepping Discs.
 
2017-10-04 08:39:08 AM  
The Roads must roll.

img.fark.netView Full Size
 
2017-10-04 09:25:10 AM  
The BFR? The Barfer?
 
2017-10-04 09:33:21 AM  
Don't we all just liquefy and then resurrect using the stones implanted in our chests?
 
2017-10-04 09:33:56 AM  
How do you slow down from 16,700 miles per hour to safe landing speed?

Legit question. I honestly have no idea and I'm curious.
 
2017-10-04 09:37:07 AM  
Meh.  I'm waiting for Phoenix to finish this project

images1.phoenixnewtimes.comView Full Size
 
2017-10-04 09:39:09 AM  
vignette2.wikia.nocookie.netView Full Size
 
2017-10-04 09:43:54 AM  
those farkers in Shelbyville get all the things
 
2017-10-04 09:44:03 AM  

NOLAhd: How do you slow down from 16,700 miles per hour to safe landing speed?

Legit question. I honestly have no idea and I'm curious.


The atmosphere slows you down, and braking rockets take care of the rest.
 
2017-10-04 09:48:51 AM  

Comic Book Guy: NOLAhd: How do you slow down from 16,700 miles per hour to safe landing speed?

Legit question. I honestly have no idea and I'm curious.

The atmosphere slows you down, and braking rockets take care of the rest.


Yup, this is how the shuttle went from 17,000 mph to 215mph for landing.
 
2017-10-04 09:50:24 AM  
toxel.comView Full Size


I SAID, WOULD YOU CARE FOR SOME COMPLIMENTARY PEANUTS?!?!
 
2017-10-04 10:00:47 AM  
I just don't see hypersonic personal Transit as a necessity.  We're rapidly approaching an era in which you can virtually send yourself anywhere.  I can maybe see moving Commodities in this manner for Freight transport but with the safety requirements a human needs I think many people would rather experience the world virtually in the future.  I'm also taking into account the energy expenditure.  Business travel isnt going to require travel in the coming decades.

*crazy thoughts there*
 
2017-10-04 10:22:33 AM  

ArcadianRefugee: Meh.  I'm waiting for Phoenix to finish this project

[images1.phoenixnewtimes.com image 745x571]


Holy Shiat.  Phoenix to Portland by Gate!

img.fark.netView Full Size
 
2017-10-04 10:22:33 AM  

ArcadianRefugee: Meh.  I'm waiting for Phoenix to finish this project

[images1.phoenixnewtimes.com image 745x571]


i.imgflip.comView Full Size
 
2017-10-04 10:24:08 AM  

max_pooper: Comic Book Guy: NOLAhd: How do you slow down from 16,700 miles per hour to safe landing speed?

Legit question. I honestly have no idea and I'm curious.

The atmosphere slows you down, and braking rockets take care of the rest.

Yup, this is how the shuttle went from 17,000 mph to 215mph for landing.


It's going to have to be quite a bit different than the shuttle.  BFR is supposed to have "fully reusable heat shield technology", but what he means here is anyone's guess.  No way is he going to put the heat shield on the side of the booster- just too much weight and cost.  BFR is going to have to go through the atmosphere butt first since humans don't deal well with negative g, and I don't see how you flip the thing over from nose-first once in the atmosphere.  It's probably going to be on a retractable shield over the engines, but how that works I have no idea.

My guess is that it will bleed some speed off high up, but most of the braking will be propulsive, just like F9's first stage.

Personally IMHO there's no way this happens, ever.  You're looking at 1100+ tons of propellant+oxidizer for each trip.  Concorde carried 85 tons of fuel, got the oxidizer for free and was still too expensive to run.
 
2017-10-04 10:24:24 AM  

NOLAhd: How do you slow down from 16,700 miles per hour to safe landing speed?

Legit question. I honestly have no idea and I'm curious.


The Mercury, Gemini, Apollo, and the Shuttle slowed down by air resistance.  Without air resistance, Apollo would have needed a "Saturn V" to land.  The BFR will use its rockets in addition to air resistance.
 
2017-10-04 10:25:07 AM  

BafflerMeal: ArcadianRefugee: Meh.  I'm waiting for Phoenix to finish this project

[images1.phoenixnewtimes.com image 745x571]

Holy Shiat.  Phoenix to Portland by Gate!

[img.fark.net image 360x360]


Yog-Sothoth knows the gate. Yog-Sothoth is the gate. Yog-Sothoth is the key and guardian of the gate. Past, present, future, all are one in Yog-Sothoth. He knows where the Old Ones broke through of old, and where They shall break through again. He knows where They have trod earth's fields, and where They still tread them, and why no one can behold Them as They tread.
 
2017-10-04 10:42:56 AM  
That's the genius of the system!  The engines run on barf, so it's self-fueling!
 
2017-10-04 10:44:36 AM  
BalugaJoe . . . The Roads must roll.

What is that from?  I'm thinking an illustrated version of Wells' When the Sleeper Wakes.
 
2017-10-04 10:48:29 AM  

max_pooper: Comic Book Guy: NOLAhd: How do you slow down from 16,700 miles per hour to safe landing speed?

Legit question. I honestly have no idea and I'm curious.

The atmosphere slows you down, and braking rockets take care of the rest.

Yup, this is how the shuttle went from 17,000 mph to 215mph for landing.


And when the braking rockets don't work the ground will stop you really fast.

If the landing gear on the shuttle didn't work they at least could, theoretically, land on their belly. There were multiple redundant systems available as backups but if they all failed then during a belly landing the shuttle would be rendered unusable but the Crew Module was the sturdiest part and would most like survive, saving the crew.

Jets having issues with their landing gear have time to go around and attempt to fix the problem. Should all else fail then they can belly land.

Rockets like Musk's don't have the option of staying at altitude while the landing gear is fixed. As far as I'm aware the SpaceX rockets don't have a parachute backup so when that rocket is heading down, you have no choice but to go down. Those landing rockets fail and you're a crater.
 
2017-10-04 10:56:21 AM  
You're also going to have to deal with giant cats.

img.fark.netView Full Size
 
2017-10-04 11:01:46 AM  

AquaTatanka: I just don't see hypersonic personal Transit as a necessity.  We're rapidly approaching an era in which you can virtually send yourself anywhere.  I can maybe see moving Commodities in this manner for Freight transport but with the safety requirements a human needs I think many people would rather experience the world virtually in the future.  I'm also taking into account the energy expenditure.  Business travel isnt going to require travel in the coming decades.

*crazy thoughts there*


img.fark.netView Full Size
 
2017-10-04 11:15:39 AM  
They've got this....

i.ytimg.comView Full Size


Whattaya say we drop the nose?
 
2017-10-04 11:16:56 AM  

AquaTatanka: I just don't see hypersonic personal Transit as a necessity.  We're rapidly approaching an era in which you can virtually send yourself anywhere.  I can maybe see moving Commodities in this manner for Freight transport but with the safety requirements a human needs I think many people would rather experience the world virtually in the future.  I'm also taking into account the energy expenditure.  Business travel isnt going to require travel in the coming decades.

*crazy thoughts there*


Said the same thing in the other thread. While it's certainly feasible, and possible to get the costs relatively low, why would you need to? I telecommute 80% of the time now. And freight is most efficient when it's large and slow. Unless you're shipping raw fish, there really isn't a need for intercontinental travel to take less than a few days.
 
2017-10-04 11:18:22 AM  

Creepy Lurker Guy: BalugaJoe . . . The Roads must roll.

What is that from?  I'm thinking an illustrated version of Wells' When the Sleeper Wakes.


Heinlein.

And the stepping disks reference was Niven.
 
2017-10-04 11:24:04 AM  
Let's skip the logistics of being shipped like a armageddon warhead, and focus on comfort.

holykaw.alltop.comView Full Size


For $10k and half a day, would you rather be pampered with the sheiks, or spend about as much time to go on a violent roller coaster with a one in ten chance of blowing up?
 
2017-10-04 11:29:58 AM  
Theaetetus  . . .  Heinlein.

I'm aware of Heinlein's Rolling Roads, but I think he stole them from Wells.  The illustration you posted looked Victorian, so I thought it might be from Wells.

I suggest you read When the Sleeper Wakes. I think it's Wells' best work, and includes a lot of eerily prescient predictions.  One character has an iPod.  Another uses a VCR, in which the tape jams.  ;-)
 
2017-10-04 11:41:59 AM  
Having spent twenty hours flying from New Orleans to Melboune Australia and back a couple of times, I'd gladly spend a couple of hours puking and recovering to avoid that torture.
 
2017-10-04 12:12:53 PM  

ArcadianRefugee: Meh.  I'm waiting for Phoenix to finish this project

[images1.phoenixnewtimes.com image 745x571]


We've almost got ours working....

thedetroiter.comView Full Size
 
2017-10-04 12:26:42 PM  
A 15 minute drop ride?  No ty.
 
2017-10-04 12:33:50 PM  

wildcardjack: Let's skip the logistics of being shipped like a armageddon warhead, and focus on comfort.

[holykaw.alltop.com image 500x350]

For $10k and half a day, would you rather be pampered with the sheiks, or spend about as much time to go on a violent roller coaster with a one in ten chance of blowing up?


Good point, but US->Asia travel times are more in the range of 12 hours in the air, and if you've got connections or layovers it can easily be 20 hours of flying.

If I had a spare $10K laying around I'd actually buy a car instead of going to China.
 
2017-10-04 12:39:10 PM  

facepalm.jpg: wildcardjack: Let's skip the logistics of being shipped like a armageddon warhead, and focus on comfort.

[holykaw.alltop.com image 500x350]

For $10k and half a day, would you rather be pampered with the sheiks, or spend about as much time to go on a violent roller coaster with a one in ten chance of blowing up?

Good point, but US->Asia travel times are more in the range of 12 hours in the air, and if you've got connections or layovers it can easily be 20 hours of flying.

If I had a spare $10K laying around I'd actually buy a car instead of going to China.


Since the rockets 🚀 aren't going to be launching or landing within sight of your destination city, you still have half a day of travel making connections.
 
2017-10-04 12:39:30 PM  

Comic Book Guy: NOLAhd: How do you slow down from 16,700 miles per hour to safe landing speed?

Legit question. I honestly have no idea and I'm curious.

The atmosphere slows you down, and braking rockets take care of the rest.


to be fair, the article said nothing about a SAFElanding
 
2017-10-04 12:50:21 PM  

LesserEvil: ArcadianRefugee: Meh.  I'm waiting for Phoenix to finish this project

[images1.phoenixnewtimes.com image 745x571]

We've almost got ours working....

[www.thedetroiter.com image 324x243]


You have to tell us where that is.
 
2017-10-04 01:25:04 PM  

Glockenspiel Hero: It's going to have to be quite a bit different than the shuttle.  BFR is supposed to have "fully reusable heat shield technology", but what he means here is anyone's guess.  No way is he going to put the heat shield on the side of the booster- just too much weight and cost.  BFR is going to have to go through the atmosphere butt first since humans don't deal well with negative g, and I don't see how you flip the thing over from nose-first once in the atmosphere.  It's probably going to be on a retractable shield over the engines, but how that works I have no idea.


I think it's unlikely that they'll ever actually use this for point to point transport on Earth, but most of those questions are addressed in the presentation.
 
2017-10-04 01:29:31 PM  
FTFA: So could a quick peek out the window during a particularly twisty maneuver. "There's a disconnect between the g-force and what the person sees, which can lead to severe motion sickness,"

This line alone proves not a hell of a lot of thought was given to writing this "article" - why in the ever-loving-fark would they bother with windows?  They're already talking about replacing windows on airplanes with screens showing a camera captured image from outside - there's no way they will be installing hundreds of points of failure on a spacecraft.  And if they dont want you disoriented during translational maneuvers they'll turn the damn screens off.
 
2017-10-04 01:45:16 PM  

uksocal: Don't we all just liquefy and then resurrect using the stones implanted in our chests?


i.imgur.comView Full Size
 
2017-10-04 01:50:35 PM  

LesserEvil: ArcadianRefugee: Meh.  I'm waiting for Phoenix to finish this project

[images1.phoenixnewtimes.com image 745x571]

We've almost got ours working....

[www.thedetroiter.com image 324x243]


Wow the Asura are moving quick here.
 
2017-10-04 02:15:03 PM  

ShadowLAnCeR: LesserEvil: ArcadianRefugee: Meh.  I'm waiting for Phoenix to finish this project

[images1.phoenixnewtimes.com image 745x571]

We've almost got ours working....

[www.thedetroiter.com image 324x243]

Wow the Asura are moving quick here.


These days, I'm okay with that.
 
2017-10-05 05:01:24 AM  

ArcadianRefugee: LesserEvil: ArcadianRefugee: Meh.  I'm waiting for Phoenix to finish this project

[images1.phoenixnewtimes.com image 745x571]

We've almost got ours working....

[www.thedetroiter.com image 324x243]

You have to tell us where that is.


The hint is in the image link shown in the quote
 
2017-10-05 08:34:32 AM  
I forget I can still get that info when using my phone.

/thanks
 
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