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Hyperloop One's Full-Scale Pod Reaches 192 MPH In New Nevada Track Test (techcrunch.com)
On July 29, 2017, Hyperloop One competed a test at its full-scale Nevada test track that travelled a high speed, running nearly the entirety of the 500 meter (1640 foot) test route. "XP-1, the company's first Hyperloop pod, reached speeds of up to 192 mph during the test, which is getting closer to the planned functional speeds of future Hyperloop installations planned for Dubai elsewhere," reports TechCrunch. From the report: The new test breaks the recorded speed record for any Hyperloop tests ever conducted, including those done by research organizations participating in SpaceX's pod design competition. It was conducted on July 29, 2017, and included a 300 meter acceleration phase, with gradual breaking to come to a stop after that point. Hyperloop One depressurized the tube for the test track down to conditions similar to those at 200,000 feet above sea level, which is part of the Earth's atmosphere where there is very little friction and resistance to the rarified air. The company says that all aspects of the system, from motors, to electronics, to the vacuum pump and magnetic levitation mechanism worked well during the test.
Not content with smashing elementary subatomic particles, not content even with accelerating protons or lead ions, now they want to accelerate people, inside long evacuated tubes, to ridiculous speeds.
John_Chalisque
"New Nevada Track Test"
I'd like to welcome our most recent member - New Nevada, which joins New England, New Jersey, New York and New Mexico in making news!
"National Security is the chief cause of national insecurity." - Celine's First Law
Oh shit! Good thing random fat fuck internet faqgot was here to remind them! I'm sure they haven't even considered it until you put down your sandwich and chimed in, you fucking imbecile.
They are expensive, temperamental, inefficient, and there is a reason scientists say "Nature abhors a vacuum".
All I can say is, "I want the contract to maintain the 1,000's of miles of vacuum tube!"
I want to know where Dubai elsewhere can be found on the map.
It turns out there are a lot of people what need smashin'
"There is more worth loving than we have strength to love." - Brian Jay Stanley
also didndu nuffin
https://techcrunch.com/2017/08...
with gradual breaking to come to a stop
Goddamnit.. the word is braking.
It's not fast enough ... (fill in your own ad hominem)
It's not long enough
You can't get permission to build it
It's too dangerous
It's too noisy
It's too expensive
It doesn't cover everyone's needs
Elon Musk
Slashdot, proudly fighting progress for 20 years.
High speed rail in China already goes 190-220mph. Exactly how is this better?
Trains are problematic in the US for numerous reasons, so even having a "fast" train won't solve many issues. Japan has a functional train system with cities designed around them. citation but once you need to get away from the main train station the novelty of trains quickly wears off.
-The wise argue that there are few absolutes, the fool argues that there are no probabilities.
Wouldn't better VR conferencing make business travel less critical and thus negate much of the need for Hyperloop?
“Common sense is not so common.” — Voltaire
It covered nearly the entirety of the 1640 foot meter test track? And hit 192 MPH?
Let's be generous and say it traveled one third of a mile, and let's assume it accelerated linearly (it didn't) from 0 to an instantaneous peak of 192 MPH, then immediately decelerated linearly back to 0 (and stopped). That gives an average velocity of 96 MPH.
The thing ran for less than 12.5 seconds.
Let us know when you've achieved anything worthwhile in your life.
I'm guessing by something called "engineering", and by not spending all their time posting stupid crap on internet forums.
I'd be more worried about a propulsion failure. Stuck in the middle of nowhere, and if you exit the vehicle you suffer explosive decompression. If you don't exit the vehicle, you die when your oxygen supply runs out. No thanks.
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Going nowhere fast.... Be still my beating heart.
"File to fit, pound to insert, paint to match" - Aircraft Maintenance 101
Probably not. It will be switching esp if done at high speeds.
I prefer the "u" in honour as it seems to be missing these days.
If hyperloop really builds out with 2 miles and can show that they are much cheaper, then CA will either switch, OR, musk will start boring between SF to LA, or perhaps LA to SD, and prove this long before cahst starts.
I prefer the "u" in honour as it seems to be missing these days.
v1^2 - v0^2 = 2ad
a = (v1^2 - v0^2) / 2d
v0 = 0
v1 = 192 MPH
d = 300 meters
a = (192 MPH)^2 / (2 * 300 meters) = 12.28 m/s^2
= 1.25 g
arctan (1.25 g / 1 g) = 51.3 degrees
That's gonna be trippy riding inside. Since there are no windows, you only have the apparent direction of gravity (acceleration) to determine "up". It's going to feel like you're in a plane climbing up at a 51 degree angle. That is, anyone trying to stand while this is going on is going to be leaned forward at 51 degrees relative to vertical at rest. (I'll add that the earlier test to 69 MPH in 30 meters is 1.68g, giving an apparent inclination of 58 degrees.)
Yeah, and ppl like you have correctly pointed out that musk would never get a rocket company off the ground, let alone have it be the cheapest and reuse rockets. Likewise, electric cars will never beat ICE and a new car company will never make in America. Thank God that ppl like you exist to mess with the stock market.
I prefer the "u" in honour as it seems to be missing these days.
You can't blame the infinitely expensive slow bullet train to nowhere on the government, when it's the people who specifically voted it into existence with a ballot measure.
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Can someone enlighten me with info about the throughput of this system of small high-speed capsules? A regular trains and airplanes transport large number of people at once, making them economically scalable.
If this becomes real, and if there were an accident, I'd hate to be the guy that has to scrape off what's left of the passengers from whatever they collided with. 700mph..cheesh.. a thin layer of organic goo and a fine red mist.
-- "This world is a comedy to those who think, a tragedy to those who feel."
I was listening to an interview with one of the team members on NPR. Apparently, the biggest problem they face trying to go faster is the test track is too short! In other words, they've built the pods to go faster, but until they upgrade the track they won't be able to test it.
Top speed on straightest sections of track will be 760mph, more curvy areas will be around 300mph to reduce lateral g's.
You are at least the 4th or 5th person to say this, like you just shot down the entire project with your genius insight. But if you'd actually RTFA, or read any of the dozen plus articles here on /. In the last couple years, you'd realize the actual planned top speed is 760 MPH.
So tell me again about "lolz bullet trains OMG have been going this fast for years, Musk is such a retard looool!"
Oh really, japan's glorious train has top speed faster than 760 MPH? This is called a test, dip you understand the concept? In the real world, with difficult engineering projects, systems and components and everything is tested along the way. You don't just go from blueprints to full project completed without any testing along the way.
/. AC shit poster. But that is definitely a possibility.
Surely you realize this, otherwise you'd have to be even denser than the average
The tube can be rapidly re-pressurized in case of emergencies. That's a key safety feature in case of a vehicle hull breach. Oxygen masks would probably still be required, similar to airlines.
As far as propulsion failures, I believe each vehicle has on-board power enough to travel to an emergency exit point. No idea about what would happen if the vehicle gets stuck for some other reason, though, or if on-board propulsion fails. Likely, people experience a very long, uncomfortable wait as emergency workers breach the tube and extract them.
Irony: Agile development has too much intertia to be abandoned now.
In case it helps you understand what is going on here, the first time the ThrustSSC moved under its own, it hit a whole 70 miles an hour! And that was using technologies that have been around for over 40 years.
Now you want to do it with an entirely brand new technology. You want them go straight to 310 KM/h, do you?
The tube was only 500m long ... how much faster do you want to go on such a short distance?
Cost free eBook I read (by iBook/Kobo/Amazon/ObookO/Gutenberg etc.): "The Green Odyssey" by Philip Jose Farmer.
It's only a test of concept.
The politics may well prove impossible.
I had a dream, bright and carefree, but now there's doubt and gravity
(I am not interested in getting involved in an abstract discussion about all this, but would certainly welcome any reliable source of information about the exact conditions of this test)
From the small real chunks in the video and the limited information in the linked article, I understand that:
- We are talking about accelerating a small vehicle (as big as a small truck?) from zero to 300 km/h in 300 m and then keeping that speed for about 500 m.
- It seems that it is a kind of a small train (better: the small locomotive of a train) over fancy rails travelling as any other train (or IC-powered, rail-based vehicle) would do. No idea about the exact effect of all this vacuum breakthrough technology, but it doesn't seem to matter too much here (= speed mostly constrained by the friction of the wheels against the rails).
After some research and by making lots of assumptions because of the limited amount of information in that article (again: I will be more than happy to update this post if anyone could provide reliable enough information about the exact conditions), it seems to have a reasonably good acceleration for what seems its weight by comparing it with equivalent road-based alternatives (i.e., fast cars or trucks). On the other hand, the friction wheel-rail is much lower than the one wheel-road (rolling resistance values); to not mention the fact that the contact surfaces of the typical wheels of road-based vehicles are much bigger than what seems to be shown in the video (i.e., the aforementioned factor would have to be still smaller?). Comparing this with the acceleration of a train locomotive might be more accurate, but I haven't been able to find any reliable reference to that alternative.
In summary, it seems a difficult-be-compared-against-anything-else sample of well-known technology (= vehicle on rails) under extremely limited conditions (a straight stretch of 300+500 m!) and by providing almost no relevant information. Also I guess that reaching much higher speeds under these exact conditions wouldn't be too difficult: if much bigger locomotives with many wagons can travel faster than 400 km/h during long (not completely straight!) stretches, these engines should be able to deliver notably higher speeds under notably better conditions (= no wagons/weight + straight and extremely short stretch).
Logically, this new "milestone" (= new CGI-intensive video) has no effect on my medium-/long-term predictions for Hyperloop, as written in a post here some weeks ago (reminder: Slashdot posts cannot be edited/removed and I welcome anyone to quote me on my predictions in that post at any point). Short summary: I don't expect Hyperloop to ever become a reality as it is being advertised; in the best scenario (= losses-driven project eminently supported by have-to-be-done-no-matter-what ideas), it might become an expensive and mostly useless toy.
Custom Solvers 2.0 = Alvaro Carballo Garcia = varocarbas.
I was listening to an interview with one of the team members .. the biggest problem they face trying to go faster is the test track is too short! In other words, they've built the pods to go faster, but until they upgrade the track they won't be able to test it.
Thanks for that pearl of wisdom. We didn't realise they need some distance to get up speed. Shame that. OTOH my car can reach 60mph without moving from the spot.
Absolutely. Long pressurized pipe^H^H^H^H tubes certainly sounds unpossible!
https://en.wikipedia.org/wiki/...
This is nothing special.
Call us again when it reaches high velocity (somebody said 1220kph / 760mph ?).
Then call us when somebody breaks the vacuum while the vehicle moves at that speed so we see how safe it is. (Preferably from a distance, while an internal camera films dummies turning to mush)
After that lt's see where it goes.
Irrelevant news and morons using moderation to mod down what they disagree on. 2018 resolution: so long.
I was more responding to GP's question,
What is the point of all this stuff if it barely reproduce six years old performance? are there plans to go faster?
The answer is yes, but the test track is too short currently to develop/demonstrate at those speeds. But thanks for your valuable contribution to the conversation.
In what way is this a more serious issue than with passenger aircraft? If you have propulsion failure on an aircraft, you have to hope that there's a suitable airport within the range the plane can glide. Exit the vehicle and you fall to your death.
The hyperloop capsule has it's own air supply. So you can sit there quite a long time with no issue. Meanwhile, the tube can be taken from a vacuum to normal atmospheric conditions.
Far less hazardous than aircraft.
If Thunderrf00t had been around at the beginning of the 20th century, he would have been one of the ones telling everyone that man cannot build a flying machine. And he'd be using math with errors in units to try and prove it.
You are comparing the very first full-scale prototype with finished, mature products. That's obviously ridiculous.
How are they planning to handle the occasional earthquake that might cause a permanent shift along a fault line?
nt
I stated that there are numerous reasons things work in Japan, or other countries that are heavy train users for that matter, and quite frankly amazed that I have to point them out.
Distance between Tokyo and Kobe, 320 miles. That is a bit more than half of the whole country of Japan. Distance beween Kobe and Osaka, or Osaka and Kyoto is between 20 and 30 miles.
Compare that to say the two largest cities in just California, 404 miles apart. SF and the Middle of the country, 1,800 miles. Distance between coasts at around 3,000.
Now do that same comparison with Germany, or France, or the UK, or Spain, or any other county you wish. As the land mass increases (Russia/India/China) the use of trains becomes more and more local and long distance commuting gets less and less.
A high speed train won't convert people, because the time savings even at 300 MPH like a bullet train means hours (plural) on a train to get between cities that you can fly in an hour. I hope I don't need to state that Trains will have stops (like in Japan, Germany, etc..) so you are not going a direct route at top speed ever. The fastest bullet trains between Tokyo and Osaka will take you on average 6 hours, even though it's only 300 miles. You can fly from Tokyo to Osaka in less than an hour.
-The wise argue that there are few absolutes, the fool argues that there are no probabilities.
It really isn't though. The project has yet to do anything interesting or novel. And there are massive engineering hurdles that may not have any feasibly priced answer, and they've yet to address this. The prototype as shown in the photograph doesn't even have an attempt at a mechanism to allow people or cargo to enter and exit the vehicle without losing pressure and pumpdown takes hours with just that tiny stretch of track. I wouldn't be surprised if the vehicle didn't even have a pressurized chamber inside. They have ZERO business bothering with full scale at this phase. The only reason why they are is because they are drowning in venture capitalism funds.
Your list of problems have immediately obvious answers. And, the reasons why they are doing things this way is really easy to understand.
Are you incredibly short sighted or just trying to be negative about everything? Are you generally a negative person? Do you always see how easily explained and fixed problems can go wrong instead of right? Do you not use duct tape and super glue to fix things, instead using staples and scotch tape, only to see the shitty repairs you made fall apart literally in front of your face?
When the only tool you have is a claw hammer every problem starts to look like the back of someone's skull.
Nothing novel? You either don't know what that word means or are not familiar with this project. Pick one.
They put a maglev in a vacuum chamber. We've had maglevs fielded, carrying passengers since 1979. So that's not new. There was no particular engineering problem that needed to be solved to move that technology into a vacuum chamber. So nothing new there. They haven't done anything new.
As a matter of fact, I'm an engineer and fabricator. I know metalworking, machining, welding, blacksmithing, fiberglass composites, autobody restoration, greensand pattern-making, and metalcasting, resin-casting, and moldmaking. When I fix things you can't tell it was ever broken. I'm a very positive person and I know that amazing things can be done. I built my own high-vacuum chamber. High-vacuum means it has both regular rotary-vane roughing pump and a high-power diffusion pump that brings the vacuum so low that it cannot be measured by mechanical means. On my first attempt, I didn't bother to do the math, and went with a stock-pot whose walls were too thin. The thing crushed on me on my second pumpdown test. It went off like a gunshot. I'm intimately aware with the forces involved that must be appreciated to make this feasible. The mechanical feedthrough (that's the technical term) problem is solvable, but absolutely nontrivial. So far, all they've done is put a maglev train in a vacuum chamber. No one has ever doubted that this could be done. We've had maglev trains carrying actual passengers since 1978. A proper engineering endeavor would start demonstrating this idea in small-scale. It saves tons of money to solve as many problems as possible in the small scale and only go to full-scale when the physics demands it. These guys went full-scale early because they've got $150 million dollars to play around with, and because they want still more money, and so they're doing full-scale demos because they look more impressive. But they've yet to solve any new engineering challenge. They try to tout this as their kitty-hawk moment. But it isn't. It's an unmanned person sized maglev in a tube. Send a human down it safely and I'll be impressed. Design a tube that can withstand a car crashing into it without collapsing, made from materials that can be cheap enough to be feasible and I'll be impressed. Or design a feasible solution for emergency exits. Or demonstrate a bellows mechanism that can allow for thermal expansion and contraction that is able to flex for a year or more while outside in California weather and still hold a vacuum without leaking. Show me that the numbers crunch in such a way that they don't have to have a massive volume of passengers being charged $2k per ticket in order to break even.