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Re:Will we ever fly supersonically over land? by marcosdumay on Saturday July 03, 2021 @04:32PM (#27724656)
Well, in a plane trip you have 3 lost hours before it starts and after it ends, so a normal train, running at 130km/h will be faster than a plane at 850km/h for any trip of less than ~460km.

If you make it a fast train, at 350km/h, it will beat the plane on any trip up to 1700km.

Most trips are short, so no, most trips can be done by train and people still spend less time on them than by plane.

Re:Will we ever fly supersonically over land? by cortesoft on Saturday July 03, 2021 @04:41PM (#27724730)
I live in Southern California, with family in Kansas, Wisconsin, and New York. The closest one is 2500kms away. The longest is almost 5000kms A train would take a lot longer than a plane.

Even more than just the distance, though, is the fact that there would be no practical way to have direct rail lines to every major city in the US.

Trains are useful, but there is no way they could replace air travel in the US.

Re:Will we ever fly supersonically over land? by throw0101a on Sunday July 04, 2021 @08:34AM (#27729182)
> I live in Southern California, with family in Kansas, Wisconsin, and New York. The closest one is 2500kms away. The longest is almost 5000kms A train would take a lot longer than a plane.

Perhaps people/families have spread themselves all over the continent because in the past energy has been 'too cheap' (i.e., didn't price in externalities).

With carbon pricing people may make different decisions in how far they want to travel from their 'home town', and what that would mean for seeing family.

>95% of the population of the US (and CA) are people who moved across an ocean and had basically zero expectation of seeing their families once they left. The only communication would be letters, telegraphs, and later trans-oceanic telephone calls.

Given the realities of climate change, and what it's cost us with regards to damage to the planet, expectations need to adjust.

Re:Will we ever fly supersonically over land? by pyuser583 on Sunday July 04, 2021 @11:16AM (#27730279)
Travel is extremely economically important, especially for the poor.

Living in a poor, rural county with poor schools and few jobs can really mess things up.

Someone I know is getting divorced.

She was a very high earner who moved to a low-cost of living, low wage area to be with her husbands family.

She had previously earned very high wages, but took a significant pay cut to live with in-laws.

As the divorce is concluding, she realizing that the terms of the divorce prohibit her from taking the kids out of state.

Which means until her kids are 18, she’s effectively trapped in a market where her MS in Engineering gets her a job at Walmart.

She had previously worked for a major firm in New York, and then worked for a the local government until she had to resign.

So she’s basically screwed.

Plenty of people have skills and credentials that can only be used with relocation. A MA in Journalism isn’t very helpful outside big cities.

Re:Will we ever fly supersonically over land? by throw0101a on Sunday July 04, 2021 @02:35PM (#27731663)
> Travel is extremely economically important, especially for the poor.

"Travel" or "movement"?

I am the first generation to be born in the country I live in. When my (grand)parents left, they left under the assumption that there would be no, or maybe very little, chance of going back to the Old Country. They took a boat over the course of many weeks to traverse an ocean; an era before cheap air travel.

When people move in the future, to hopefully have a better life than where they current are, it may be that they may not be able to go back (as easily) to where they came from.

The fact that we can now travel back and forth cheaply over great distances could simply be a temporary blip in human history, and we should perhaps consider this era could be ending. You can still move, but it will be more 'permanent' going forward, and travel is will be less frequent/easy/cheap/etc.

Re:Will we ever fly supersonically over land? by harimau777 on Sunday July 04, 2021 @04:41PM (#27732459)
Unless you can move your entire family, then movement implies travel at least twice a year in the US.
Re:Will we ever fly supersonically over land? by throw0101a on Sunday July 04, 2021 @05:59PM (#27732965)
> […] then movement implies travel at least twice a year in the US.

Under the current regime of 'cheap' travel in which the externalities of climate change are probably not taken into account.

Re:Will we ever fly supersonically over land? by LargoLasskhyfv on Sunday July 04, 2021 @05:37PM (#27732822)
Why? Building a community, grass roots style, on the net...fight the right. Righten the flight. Show where to go with flow. Make it glow...
Re:Will we ever fly supersonically over land? by marcosdumay on Monday July 05, 2021 @09:33AM (#27737797)
Yes, you are not on that "most" category. (But that 2500km is close to it, so trains may still be more comfortable.)

to be fair, even for short trips trains require a minimum passenger flux before it's more efficient than planes. So even strictly talking about carbon emissions, trains are a net loss for most trajectories, but a large gain for most passengers.

Re:Will we ever fly supersonically over land? by ant6n on Saturday July 03, 2021 @07:21PM (#27725833)
Well, if there was no air travel, rail lines everywhere would likely be practical... again.

If trains could go 250km/h on average, that 5000km trip would take 20 hours - that's plausible for an overnight trip, leave 6pm, arrive 10am. A flight over this is distance is probably a much more stressful red eye.

Sure this is quite speculative, but perhaps less so than hyperloop dreams, or supersonic aircraft that somehow have no environmental impact.

Re:Will we ever fly supersonically over land? by cortesoft on Saturday July 03, 2021 @09:45PM (#27726666)
That seems a strange argument… yes, if we didn’t have planes, trains would be our best option… but it would be a much worse experience. 20 hours is a lot longer than the 5 it takes me to fly to New York.

If there was no air travel, I would just travel a lot less. If you want to argue that the environmental cost of air travel is too great to allow it to happen is one thing, but done act like it wouldn’t make the travel experience a lot worse.

Re:Will we ever fly supersonically over land? by Gibbon1 on Sunday July 04, 2021 @04:05AM (#27728036)
I'd like to see a graph of miles flown per year by decile.

internet foo

Found this. As I suspected, hockey stick graph.

https://news.gallup.com/poll/1579/airlines.aspx

Half the people in the US don't fly at all. 25% fly 1-2 times a year. People that don't fly at all, and people that fly 1-2 times year. Probably wouldn't be much impacted if they had to take a high speed train instead of a plane.

Re:Will we ever fly supersonically over land? by ant6n on Sunday July 04, 2021 @10:18AM (#27729788)
It’s not a strange argument. Read the discussion again, which starts with the thesis

> All overland passenger transport should be rail.

Then it was claimed that this is impossible. My argument is saying it’s possible to have rail replace rail, for example if air travel was severely restricted.

Re:Will we ever fly supersonically over land? by sokoloff on Saturday July 03, 2021 @08:12PM (#27726113)
6 PM to 10 AM is only 16 hours. Even with 3 time zones, you’d only be at 19 hours. 250kph straight line equivalent is unlikely given the terrain in the way (Rocky Mountains, primarily).
Re:Will we ever fly supersonically over land? by ClumsyPilot on Saturday July 03, 2021 @09:58PM (#27726709)
Tonnels, we are made massive ones through the alps in europe

https://en.m.wikipedia.org/wiki/Gotthard_Base_Tunnel

Re:Will we ever fly supersonically over land? by inglor_cz on Sunday July 04, 2021 @03:40AM (#27727952)
Gotthard is impressive, but it took the Swiss 17 years to build it. Nearby, Brenner Base Tunnel is under construction between Italy and Austria, and it is expected to take 25 years to complete.

I can't imagine how long would it take to tunnel through the Rockies. Look at the map, they are far wider than the Alps. Getting through the Rockies is like getting from Denmark to Croatia.

Re:Will we ever fly supersonically over land? by LargoLasskhyfv on Sunday July 04, 2021 @05:51PM (#27732915)
Use the Army Corps of Engineers, Navy Sea Bees, something like that. Look at https://en.wikipedia.org/wiki/Seikan_Tunnel going between islands under the Japan Seas in an earthquake area.

Think BIGGRRRR! (Aggressively so, instead of sissying around!)

edit: also not to forget about 'Nuclear Tunnel Boring Machines/Subterrene' https://havacuppahemlock1.blogspot.com/2015/06/nuclear-power...

cf. "Trans-Planetary Subway Systems

A Burgeoning Capability

by Robert M. Salter

February 1978"

https://www.rand.org/pubs/papers/P6092.html

Re:Will we ever fly supersonically over land? by ClumsyPilot on Sunday July 04, 2021 @07:35AM (#27728915)
Better get started soon then! Once you make a tonnel, it stays there forever, it's a good investment
Re:Will we ever fly supersonically over land? by sokoloff on Sunday July 04, 2021 @09:32AM (#27729486)
Indeed, if we want tunnels to make a rail network cross the Rockies, we had really better get started, since you'd need 5 east-west routes to make trains practical ("less impractical"?) to cross the Rockies. No one is going to take an additional 1000 mile (7+ hour) diversion north-south to pass through a tunnel to repeat that north-south diversion on the other side.
Re:Will we ever fly supersonically over land? by ant6n on Sunday July 04, 2021 @11:13PM (#27734333)
China built tens of thousands of km of high speed rail for 350km/h. Largely using prefab elevated tracks, with occasional tunnels.

Again it’s difficult, but possible if a replacement for air travel was considered a necessity.

Re:Will we ever fly supersonically over land? by LargoLasskhyfv on Sunday July 04, 2021 @05:31PM (#27732781)
/me hypes the loop...
Re:Will we ever fly supersonically over land? by sokoloff on Saturday July 03, 2021 @08:11PM (#27726106)
I don’t lose 6 hours on a typical airline trip. Domestic, I tend to arrive around an hour before gate close time. International from the US, about 90 minutes. For a train, I’d still plan on a 30 minute safety buffer (to protect against en route delays to the station). Add another 30 minutes over the train for boarding, push, and taxi. So, I’m probably giving up an hour plus/minus however closer the train station is vs the airport.

Arriving, baggage claim rarely takes more than 30 minutes. (Delta “guarantees” 20 minutes on domestic flights.) With no checked bags, it’s the 10 minute walk through the airport and then plus/minus ground transport differences vs the train.

I can’t imagine that most people are spotting the train a 6 hour head-start, unless the live upstairs from the train station and are extremely nervous about missing their flight.

Re:Will we ever fly supersonically over land? by jaclaz on Sunday July 04, 2021 @03:32AM (#27727920)
Of course it depends, but train stations tend to be in the center of a city, so you start from the center of A and arrive to the center of B.

With planes, airports are way off the city centre, I think that there are few airports (here in Europe) serving large cities that can be reached in less than 1 hour from the city centre, and that applies to both A and B, to this you add, unless you use a private means of transportation (car-taxi), a half an hour for the timetable of the bus or train you need to take to/from the airport, as it won't necessarily be synchronized with your flight departure/arrival.

Re:Will we ever fly supersonically over land? by Leherenn on Monday July 05, 2021 @04:12PM (#27741434)
That kinda implies you leave and go to the city centre each time, which might not be the case. Living next to a major train station is usually very expensive. If you're visiting family in the suburbs, you might be closer to the airport than the city centre (or be "unlucky" and have the airport on the other side of the city). It sounds pretty situational to me.
Re:Will we ever fly supersonically over land? by LargoLasskhyfv on Sunday July 04, 2021 @06:29PM (#27733146)
Re:Will we ever fly supersonically over land? by marcosdumay on Monday July 05, 2021 @09:38AM (#27737844)
The numbers on my comment are for 3 hours, not 6. (Yeah, the text is not very clear on that.)
Re:Will we ever fly supersonically over land? by jaclaz on Sunday July 04, 2021 @03:25AM (#27727891)
Yes, and for longer trips, besides the high speed trains, there are (were) also night trains, but for some reasons most of them were canceled (and/or the prices became less and less competitive), an old thread about this:

https://news.ycombinator.com/item?id=19557848

Maybe they will start to organize a few more of these trains, the level of stress was so much lower on (overnight) trains when compared to planes when moving in Europe.

Re:Will we ever fly supersonically over land? by LargoLasskhyfv on Sunday July 04, 2021 @06:43PM (#27733207)
That trend of canceling them seems to be in reversal, at least a bit. https://www.nightjet.com/en/reiseziele