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Hyperloop

spacex.com

101–110 of 983 posts

Re: Hyperloop

#101

No toilet, and no way to get off, or even really stand up? I know some personal jets lack such facilities, but they're not exactly open to the public. At least on BART you can move away from the crazy...

The paper mentions two tube diameters, supporting "more versatile" Hyperloop capsules in the larger version.

Also, with a 35-minute trip time, these concerns are well within the realm of "hold it" till the next stop.

Re: Hyperloop

#102
> Risk of derailment is also not to be taken lightly, as demonstrated by several recent fatal train accidents.

Interesting. No comment on the potential outcome of a passenger-filled capsule being ejected from a burst tube on high pylons at 350mph.

Re: Hyperloop

#103
Made me think of a scifi book I read recently where terrorists attacked the hyper-speed rail system by leaving a bowling ball on the "tracks"...

Re: Hyperloop

#104
i would say that it is marketing if the guy did not own SpaceX. Still I am skeptical. Every child can draw neat pictures and speak about vacuum.

Re: Hyperloop

#105
post #59
post #32

"In the case of the Hyperloop, Musk started focusing on public transportation after he grew disenchanted with the plans for California’s high-speed rail system." And who says that big government stifles entrepreneurial innovation? If ALL Musk does with the Hyperloop announcement is shed more light on the potential debacle that is to be our $70b+ high-speed rail in California, we owe him a debt of gratitude. PS - Dire…

So, we have "light shed" on the current "debacle" and neither system gets built. That's a win? HSR was first commerically available in 1964. Yes, it got really expensive waiting 50 years. I imagine it'll be even more expensive in another 20-30. California is going to get even more crowded.

So, we have "light shed" on the current "debacle" and neither system gets built. That's a win?

Yes, preventing a debacle is a win.

Re: Hyperloop

#106

The key advantages of a tube vs. a railway track are that it can be built above the ground on pylons and it can be built in prefabricated sections that are dropped in place and joined with an orbital seam welder. Did anyone else read this and imagine laser beams fired by satellites?

Well how else would you propose welding them together?

Re: Hyperloop

#107

That capsule ( http://images.bwbx.io/cms/2013-08-12/0812_Hyperloop_605.jpg ) looks like a claustrophobic's nightmare. Otherwise very, very cool.

How is that any worse than standard commercial air travel? Plus, really, you are talking about a thirty-minute journey.

The journeys currently envisioned by the hyperloop are more appropriate for trains, and Acela (for example) is actually pretty roomy

Re: Hyperloop

#108

No toilet, and no way to get off, or even really stand up? I know some personal jets lack such facilities, but they're not exactly open to the public. At least on BART you can move away from the crazy...

No toilets on commuter buses either and people ride them 45minutes to 1+ hours everyday with no issues.

You're stuck in the "long trip" "it's like a train" framework.

It is neither.

Re: Hyperloop

#109
post #99

I'm impressed, but I'm afraid Hyperloop's operation is modeled after airplanes, while the actual use of the system would be closer to a city bus. >All capsules would have direct radio contact with station operators in case of emergencies, allowing passengers to report any incident, to request help and to receive assistance. In addition, all capsules would be fitted with first aid equipment >Typical times between an e…

[deleted]

Re: Hyperloop

#110
post #74

The key advantages of a tube vs. a railway track are that it can be built above the ground on pylons and it can be built in prefabricated sections that are dropped in place and joined with an orbital seam welder. Did anyone else read this and imagine laser beams fired by satellites?

Not really. It's a valid welding http://en.wikipedia.org/wiki/Orbital_welding ), but I imagine it might be quite a task to scale it up to pipes as large as would be needed for this project.

For some reason Elon Musk is extremely enamored of welding technology. I remember seeing a page on an old version of the SpaceX site containing a high-level overview of the Falcon 9, where they went out of the way to mention how great circumferential friction stir welding is compared to whatever NASA used to do. And here he is bragging about it being the large stir welded thing ever created: http://www.nasaspaceflight.com/2009/01/musk-ambition-spacex-.... It's a revolutionary vehicle in many regards, but Elon seems to have a particular soft spot for welds.
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