News on China's scientific and technological development.

krautmeister

Junior Member
Registered Member
Would you want to try it yourself?
This thing is moving at almost Mach 1 in a confined space. Any significant failure could result in either explosive decompression if it were from the capsule or a dramatic deceleration if the vacuum tube suddenly flushed with air. Either die by asphyxiation or get crushed decelerating from 1000km/h to like 700km/h in a split second. Bad idea.
 

ougoah

Brigadier
Registered Member
Evacuated tube maglev is a vintage idea. Elon didn't invent it and he didn't do any work on it despite hyperloop hyper hype. It's a stupid idea unless we're talking cargo. Too easy to disrupt, too delicate to provide >99% serviceability, too unsafe, ANY failure = absolute catastrophe. While it's possible to address all those problems, it would require decades more work and execution along the entire chain and cost several hundred more times the money it would take to execute a "working" demonstrator.

There is a chasm between concept and demonstration and yet another between demonstration and execution. The biggest chasm of all comes in between execution and mass operation. Elon hasn't even gotten off the concept stage and I doubt any other has gotten beyond that. It simply doesn't work with available tools and technology. Even if it gets to working, it fails in economics because the cost of creating even a half atm "vacuum" would be more expensive than building an entire modern airport. It's a total scam project and I can't believe there would be a single engineer who can't see through the bullshit.

In the modern west, self-delusion, money and hypemen all go hand in hand.
 

KYli

Brigadier
Imo maglev tech that reaches 600+ kmh is already good enough even for the busiest routes.

The jump to hyperloop doesn't seem worth it. It will cost much more for construction (airtight tunnels are expensive) and operation and convincing the public it isn't a death trap
Don't put all your eggs in one basket. Even though China investment in EVs already took off, it didn't stop China from investing and exploring fuel cell vehicle. China can afford to research and develop hyperloop technology. But it doesn't mean hyperloop would be deployed unless it is cost effective and safe.
 

ougoah

Brigadier
Registered Member
Don't put all your eggs in one basket. Even though China investment in EVs already took off, it didn't stop China from investing and exploring fuel cell vehicle. China can afford to research and develop hyperloop technology. But it doesn't mean hyperloop would be deployed unless it is cost effective and safe.

Hyperloop tech overlap with aviation tech and maglev tech. The problem no one has solved is how to make the vacuum. Maintaining it and all the other peripheral tasks are solved matters. How do you economically create any sizeable network of ETM transport and make it resilient enough? There is no solution at the moment and nothing even close to one. It'll probably take weeks to pump air out of a tube just covering two very closely positioned cities. The whole idea is abysmally stupid sort of like the boring company idea. It's self defeating before it begins. Something a scientifically illiterate 6th grader might come up with if they didn't think about it for another few minutes. Which makes it that much more revealing that so many investors and Americans have believed in those comedy fests - boring company, hyperloop, solar roads. All Elon scam projects. Having said that, Elon knows what he's doing. This doesn't take anything away from Tesla or SpaceX though I believe SpaceX is a product of American competence and lead in space technologies rather than one man's management.
 

sndef888

Captain
Registered Member
After some reading I found that there are at least 3 maglev development projects in China

1. By CRRC Sifang at Qingdao with a target speed of 600kmh. Already have a 1-carriage low-speed prototype, 5-carriage 600kmh prototype was supposed to be complete by 2021 but no news as of now. Technology is unknown

2. By Southwest University in Chengdu with target speed of 620kmh. Only a static floating prototype and funding of less than $10 million, currently extending test track. Using high temp superconductor

3. By North University/Third Research Institute CASIC in Shanxi with target speed of 1000kmh. Project has yet to begin. Using superconductors and vacuum


The CRRC project is the most far along but we haven't heard any news since June of last year
 

Andy1974

Senior Member
Registered Member
Evacuated tube maglev is a vintage idea. Elon didn't invent it and he didn't do any work on it despite hyperloop hyper hype. It's a stupid idea unless we're talking cargo. Too easy to disrupt, too delicate to provide >99% serviceability, too unsafe, ANY failure = absolute catastrophe. While it's possible to address all those problems, it would require decades more work and execution along the entire chain and cost several hundred more times the money it would take to execute a "working" demonstrator.

There is a chasm between concept and demonstration and yet another between demonstration and execution. The biggest chasm of all comes in between execution and mass operation. Elon hasn't even gotten off the concept stage and I doubt any other has gotten beyond that. It simply doesn't work with available tools and technology. Even if it gets to working, it fails in economics because the cost of creating even a half atm "vacuum" would be more expensive than building an entire modern airport. It's a total scam project and I can't believe there would be a single engineer who can't see through the bullshit.

In the modern west, self-delusion, money and hypemen all go hand in hand.

Your cargo idea is great, a small diameter hyper loop for logistics built with pipeline technology.
 

voyager1

Captain
Registered Member
Better management of environmental and noise pollution should alleviate opposition.
This is the key point. Nobody wants to wake up with the crazy train noise next to their property.

Same if you are a student, can you imagine studying with all this noise. Or if you are an old person, or if you are the average Joe etc

Noise pollution is why nobody wants trains next to their properties.

Noise pollution also lowers house value which also generates big local opposition to trains
 

latenlazy

Brigadier
The fact that a country the size and population of Germany has a lead over China in mechanical exports up until this year shows how comparatively backwards China has been in the previous decades.
Alternatively, when you’re servicing a domestic market of 1.4 billion you need a lot more spare capacity or depressed domestic demand to have the surplus to export at the same quantities as a country the size of Germany.
 
Top