Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Hyperloop

spacex.com

Post reply on HN
Print view View original

851–860 of 983 posts

Re: Hyperloop

#851

Post by newbie12 »

bsherrill wrote: post #781

I like the idea of transporting cars with passengers or just cars/SUVs. That would be ideal. Travel from point a to point b like a ferry. Or extension of our current super highway network. Use your personal transport machine after arrival. In most of the USA when traveling outside the dense urban areas driving a automobile is the preferred form of transportation. It would make the world a smaller place much like how…

It's actually really stupid. Car sharing models mean you'll have a car waiting for you at the destination. There's no reason to bring your own steel and rubber.

Re: Hyperloop

#852

Post by yaddayadda »

toble wrote: post #186
sbashyal wrote: post #157

Earlier quoted context omitted.

Not for the first 30 minutes - which in this case is the entire trip.

I think one advantage of air travel is it's distracting. Busy flight attendants, announcements from pilots, plane moving to the runway, taking off... so there's less reason to concentrate on the lack of space while stuck in the seat.

His proposal includes "entertainment displays", so there is some sort of built in distraction technology.

Re: Hyperloop

#853

Post by bsherrill »

newbie12 wrote: post #851
bsherrill wrote: post #781

I like the idea of transporting cars with passengers or just cars/SUVs. That would be ideal. Travel from point a to point b like a ferry. Or extension of our current super highway network. Use your personal transport machine after arrival. In most of the USA when traveling outside the dense urban areas driving a automobile is the preferred form of transportation. It would make the world a smaller place much like how…

It's actually really stupid. Car sharing models mean you'll have a car waiting for you at the destination. There's no reason to bring your own steel and rubber.

What is Car sharing models ? It's simple and could be the best use of this technology. Make all the US superhighways major and key corridor stretches hyperloop. Enabling you as a driver to get around the country faster saving energy and time.

Re: Hyperloop

#855

Post by grecy »

lotu wrote: post #302
cma wrote: post #193

Earlier quoted context omitted.

Eventually hits up against this problem: http://books.google.com/books?id=DenWKRgqzWMC&pg=PA67&lpg=PA...

Ehh, really you don't just speed up the lift you redesign the whole loading and unloading system to allow it to load and unload more people per second. You see this in actual high speed lifts.

> You see this in actual high speed lifts.

Except that the chairs on a high speed lift have to be so much further apart, so you're not actually getting more people to the top in the same unit of time.

Source: I'm an Engineer and worked on fixed grip (slow) and detachable (fast) chairs and gondolas for 5 seasons.

Re: Hyperloop

#856

Post by aerolite »

robomartin wrote: post #675
aphelion wrote: post #671

Earlier quoted context omitted.

This is all rather absurd given that the Western European nations that haven embarked on major infrastructure projects in recent decades tend to have higher rates of unionization as well as stronger labor and environmental regulations than the United States. That Europe has high-speed rail and the United States doesn't can hardly be chalked up to unions.

European unions do not behave as American unions do. They seem to know how to balance their wants with the idea of allowing their host to survive, grow and succeed. American unions tend to extract as much blood as possible out of their hosts. They are really selfish, to the point of causing terminal damage. Look at the cities they've killed off.

I think at some point in the last few comments I stumbled into an Ayn Rand novel.

Re: Hyperloop

#857

Post by Arnor »

hisabness wrote: post #774
9999 wrote: post #370

Earlier quoted context omitted.

Jerry Brown's political career is coming to an end, so there are no long term political consequences for him. He's also traditionally been an opponent of government waste. I don't think it's unreasonable to believe that he would choose an unproven but promising technology over our existing useless high speed rail project. The assembly is another matter. If you think hyperloop is interesting, write and call your state…

aren't 90% of technologies promising?

No

http://en.wikipedia.org/wiki/Sturgeon's_Law

Re: Hyperloop

#858

Post by VladRussian2 »

krasin wrote: post #603
macinjosh wrote: post #127

For all of you whose panties get wet at the sound of Elon Musk's name Hyperloop is essentially just Aérotrain in a tube: https://en.wikipedia.org/wiki/A%C3%A9rotrain This guy isn't really a genius, he's just rich.

430 km/h (Aerotrain) vs 1200 km/h (Hyperloop) is a big deal. That is possible with the tube design. Aerotrain operated on the "free air" and that was the reason to lose the competition with TGV.

man, the air cushion behavior at 1200 km/h (speed of sound at normal pressure, and 1.2 Mach at the proposed decreased pressure in the tube) would be a subject of a lot of PhD works. Or in other words - it will be hell of an engineering (stability of the cushion and parasitic oscillations come to mind - that is with respect to compressor created cushion, and in addition to the compressor created air cushion the cushion's airfoil will be riding its own shock wave between tube surface and the airfoil in front of the cushion's high pressure volume) to make supersonic ground effect from concept into product.

Re: Hyperloop

#859

Post by VladRussian2 »

abdullahkhalids wrote: post #472

Just remember people, the real future of travel is SpaceX, not Hyperloop. The final frontier is space, not San Fransisco. (I am wide eyed and crazy about the Hyperloop)

the real future of space is Hyperloop v2.0 - 20 miles long or something like it, pointed at the end toward the sky with final exit speed of let's say 10 Mach (and this also will help to reach Hong Kong from SF in 1-2 hours)

Re: Hyperloop

#860

Post by enraged_camel »

robomartin wrote: post #640
enraged_camel wrote: post #599

Earlier quoted context omitted.

I'm with you that Musk seems to have ignored the human factor when estimating the cost or even the feasibility of the project. But think about how many aspects of our lives it would revolutionize. Simple example: can you imagine what would happen to the SF real estate market if it suddenly had to compete with the LA real estate market? If talented people who live in LA could suddenly commute to and from companies in…

A number of years ago a friend gave me a coffee mug that read: "What would you do if you knew you could not fail?". I eventually threw it away. Every time I saw it I was reminded of the huge chasm between ideas and their realization. Sure, if you knew you could not fail you'd do anything. "What would you do if you were Superman?. Same thing. Things are different in the real world. So, how would LA/SFO change if we ha…

>>A number of years ago a friend gave me a coffee mug that read: "What would you do if you knew you could not fail?". I eventually threw it away. Every time I saw it I was reminded of the huge chasm between ideas and their realization. Sure, if you knew you could not fail you'd do anything.

Well, no. You would not do anything. You would only do the things that the prospect of failure is currently stopping you from doing. The underlying idea is that things can be worth doing even if you end up failing at them. In fact, this is an idea Elon Musk embraces very closely. He has admitted in interviews that when he starts pursuing an idea, he knows that the most likely result is failure. Yet he pursues it anyway. The end result is that we have PayPal and Tesla and SpaceX.

>>The nature of Los Angeles is that the talented people you are referring to don't all live within biking distance of a Hyperloop station.

They don't all have to live within biking distance of a Hyperloop station. It is sufficient even if only some of them do. That's still several thousand talented people you're talking about.

Furthermore, you are not considering the economics of it very thoroughly. Flying from LA to SF currently takes 3+ hours. You drive to the airport, go through security, board the plane, deal with occasional delays, and then when you get to your destination you have to wait for luggage. On top of this, it costs around $100.

Consider an alternative involving Hyperloop. Even if you live within 30 minute driving distance of it, you would still get to SF in a little over an hour and for only $20.

Post reply on HN