Live data from Hacker News

Hyperloop lets you travel on a resonant acoustic wave?

conscienceofanentrepreneur.blogspot.com

61–70 of 93 posts

Re: Hyperloop lets you travel on a resonant acoustic wave?

#61
post #59
post #49

Earlier quoted context omitted.

Either way, pretty much any accident will result in everyone's death. Car accidents at 50 MPH result in 80% death. 760 MPH is much much much more, considering the amount of energy needed to be dispersed grows quadratically (E = 0.5 * m * v^2)

"Car accidents at 50 MPH result in 80% death." Actual stats from Great Britain in 2008 on motorways, presumably always speed limit above 50 MPH, "6% of the total killed, 3% of total seriously injured, 5% of total with slight injuries." at least per wikipedia. So there's about a 9 in 10 chance if you crash on a GB motorway, at least in 2008, you'll walk away without a scratch, rather than your 1 in 5 stat. Also all mi…

Given traffic in the UK, I don't think it's a safe assumption all those accidents were at > 50mph.

Re: Hyperloop lets you travel on a resonant acoustic wave?

#62
post #8

"Elon Musks final invention will be a time machine. It will only work once before exploding. Before entering it, Elon will turn around and tell us he has done his duty and given us many gifts, and now we must use those gifts to advance mankind. He hopes great things for us. We beg for him to stay and aid us further. He smiles sadly, He looks at us with his tired but happy eyes, shakes his head, and steps into the mac…

"Godspeed, Mr Elon. Godspeed."

Re: Hyperloop lets you travel on a resonant acoustic wave?

#63
post #37
post #10

6,437km/h (4,000mph) to zero is going to be one hell of a stop.

Yeah, where did you get those numbers? The distance from SF to LA is about 380 miles, and the speed of sound is about 760 mph. Whether or not the principles of sound movement are involved in Musk's plan, the speed is roughly equivalent if we're talking traveling back and forth in half an hour. Still a jolt, but you're talking about six times that.

I see now what I was reading wasn't HyperLoop it was a similar concept only using a vacuum tunnel.

http://www.gizmag.com/terraspan-vacuum-tube-train-supersonic...

>Safety is no small concern when you're talking about speeds in excess of 4,000 mph (6,437 km/h). After all, we've all seen the wreckage that can be caused in a 60 mph (96 km/h) car crash. The kinds of tube tracks we're talking about here would have to stretch thousands of miles in order to reach their optimum level of benefit – that's thousands of miles of safety risks. What happens when an earthquake strikes and cracks the pressure seal or destroys the tube completely? A vehicle traveling 4,000 mph is going to eat up some serious distance in an emergency stop situation.

Re: Hyperloop lets you travel on a resonant acoustic wave?

#64
post #57

A Hyperloop sounds to me like a marketed trademarked copyrighted patented implementation of a traditional Launch Loop aka Space Fountain. A wiki link: http://en.wikipedia.org/wiki/Launch_loop http://en.wikipedia.org/wiki/Space_fountain You could buy a kids toy circa 2005 implementing a model of the design using what looks like a shoelace and a blacklight. My kids thought it was pretty cool. So, take a magnetically co…

Except that Musk has said it's the 5th mode of Earth Transport after Trains, Cars, Airplanes and Boats.

Re: Hyperloop lets you travel on a resonant acoustic wave?

#65
post #57

A Hyperloop sounds to me like a marketed trademarked copyrighted patented implementation of a traditional Launch Loop aka Space Fountain. A wiki link: http://en.wikipedia.org/wiki/Launch_loop http://en.wikipedia.org/wiki/Space_fountain You could buy a kids toy circa 2005 implementing a model of the design using what looks like a shoelace and a blacklight. My kids thought it was pretty cool. So, take a magnetically co…

Except that Musk has said it's the 5th mode of Earth Transport after Trains, Cars, Airplanes and Boats.

Excellent point! Throwing in space travel would be obvious feature creep.

Re: Hyperloop lets you travel on a resonant acoustic wave?

#66
post #58
post #8

"Elon Musks final invention will be a time machine. It will only work once before exploding. Before entering it, Elon will turn around and tell us he has done his duty and given us many gifts, and now we must use those gifts to advance mankind. He hopes great things for us. We beg for him to stay and aid us further. He smiles sadly, He looks at us with his tired but happy eyes, shakes his head, and steps into the mac…

Reminds me of Silverberg's amazing short story "absolutely inflexible".

Excellent story. Thanks!

http://www.sblib.com/book/silverberg-robert-absolutely-infle...

Re: Hyperloop lets you travel on a resonant acoustic wave?

#67
I can't wait for Elon Musk to silence all the low self-esteem full-of-envy idiots talking shit about him and mentioning "vaporware" without even understanding how vaporware works! I bet $100 he'll have a prototype to showcase given the engineering power at his disposal.

Re: Hyperloop lets you travel on a resonant acoustic wave?

#68
post #67

I can't wait for Elon Musk to silence all the low self-esteem full-of-envy idiots talking shit about him and mentioning "vaporware" without even understanding how vaporware works! I bet $100 he'll have a prototype to showcase given the engineering power at his disposal.

I'll take that $100 bet.

Re: Hyperloop lets you travel on a resonant acoustic wave?

#69
post #67

I can't wait for Elon Musk to silence all the low self-esteem full-of-envy idiots talking shit about him and mentioning "vaporware" without even understanding how vaporware works! I bet $100 he'll have a prototype to showcase given the engineering power at his disposal.

I'll take that $100 bet.

And I'll hold your money. Bitcoin, anyone?

Re: Hyperloop lets you travel on a resonant acoustic wave?

#70
post #27

Not to be funny, but it seems like every other day has another "hyperloop uses acoustic waves" article. It's a good guess, but it doesn't even contain new speculation (another article went into detailed theorising about how cars would accelerate and decelerate). Seriously, until we have a solid info, or even a new guess, can we lay off Hyperloop?

Have you seen better discussion than the link provided by the OP? http://charlesalexander2013.wordpress.com/2013/07/18/hyperlo...
Post reply on HN