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Boring Company Hyperloop
- Thread starter Buckminster
- Start date
dhanson865
Well-Known Member
hyperloop means the loop has been depressurized. Doesn't matter if it's above or below ground.
Just like the "elevated trains" in some cities have stations underground and then exit below ground to go above ground you could have a loop that does the same (hyper or not).
The original hyperloop paper from 2013 used mostly evacuated tubes on pylons. After The Boring Company was formed in 2016, it opened the possibility of better sealed tunnels since it's only an extra 14.7psi. The TBC test tube in at SpaceX is above ground.
dhanson865
Well-Known Member
I'm not really sure what they are suggesting. I guess you could partially evacuate the tunnel and have the car open the recirc/vent and crank the fan to 11 to increase the pressure in the car to levels higher than the pressure in the tube but I can't imagine it's a huge pressure differential. Definitely can't get near vacuum in the tube using the method I just mentioned.
So I'm not sure what the point of the car in a closed tube is about unless the picture is showing a tube the car goes into and then the tube travels down a larger tunnel. That would allow normal pressure around the car and near vacuum in the tunnel but the pic doesn't make it clear that is what is happening.
stopcrazypp
Well-Known Member
Unless they are rebranding a different idea to be "Hyperloop" I don't see either what this kind of testing has to do with it. The depressurization of the tube was designed to allow the train to reach speeds faster than conventional high speed trains. A car on tires isn't going to be able to do that.
My guess is a partly evauated tunnel and no one in the car. Prufrock porpoises at beginning/ end, so that is just the exposed portion of a larger underground tunnel.
Boring had previously built a test sled that was built from Tesla parts
Well, the passengers need a pressurized compartment (custom vehicle). Tires can do it, just air them down to maintain pressure differential.
stopcrazypp
Well-Known Member
I'm talking about reaching speeds of well above 300mph as per the original idea. Even train tracks aren't going to be able to do that, the idea was there would be a bit of levitation.
stopcrazypp
Well-Known Member
That's not Hyperloop's target, that's the Boring company Loop tunnels. The media uses the terms interchangeably, but the boring company Loop tunnels (which are tunnels designed for cars to travel on) are very different from Hyperloop.
In 2017, testing of one version of Hyperloop already hit 192 mph, initial target was 250mph:
Hyperloop One's full-scale pod reaches 192 mph in new Nevada track test | TechCrunch
https://www.youtube.com/watch?v=FnkNgCN4eGk Hyperloop One has achieved a new milestone in terms of making its Hyperloop vision a physical reality: The
techcrunch.com
Doh, yeah was looking up the Hyperloop test sled and got confuzzled.That's not Hyperloop's target, that's the Boring company Loop tunnels. The media uses the terms interchangeably, but the boring company Loop tunnels (which are tunnels designed for cars to travel on) are very different from Hyperloop.
In 2017, testing of one version of Hyperloop already hit 192 mph, initial target was 250mph:
Hyperloop One's full-scale pod reaches 192 mph in new Nevada track test | TechCrunch
https://www.youtube.com/watch?v=FnkNgCN4eGk Hyperloop One has achieved a new milestone in terms of making its Hyperloop vision a physical reality: The
(Ignoring rolling resistance which is linearish with speed)
Aero power is proportional to cube of speed, energy per mile is proportional to square of speed.
Aero is proportional to air density. 1/4 the air pressure allows double the speed with same Wh/mile (still double the power since twice at fast).
2012 Model S:
Cd 0.24
Frontal area 25.2 sq ft
Drag force at 70 MPH: 77 pounds
Aero power @ 70: 14 hp, 10.44kW, 149 Wh/mile
Aero power @ 100: 42 hp, 31.32kW, 313 Wh/mile
https://www.tesla.com/sites/default/files/blog_attachments/the-slipperiest-car-on-the-road.pdf
dhanson865
Well-Known Member
Not an actual pod, just a scale model. Unfortunately it doesn't say what scale or how many passengers it would hold.
Not much news on hyperloop these days. I can imagine that Elon is exhausted by the idea of getting building clearances across multiple states and counties. Perhaps he sees the VTOL aircraft as the answer which he has mentioned much more in the past few years.
Hyperloop was never a real Elon project. He did initial design work, and then published It as a white paper. While SpaceX has done Hyperloop design competitions, that is really a recruiting tool for SpaceX.
Elon Musk's company Hyperloop One is shutting down according to Electrek. Yet another absurd Musk venture burnt to a crisp in his bonfire of lies.
View attachment 1002043
Edit: Yes, I'm being sarcastic. This is a real article Electrek posted.
voyager
Active Member
Is Virgin (Richard Branson) still into loopy hypes? I mean hyperlopes.
Oops, just read that the one that folded was financed by Branson.
Oops, just read that the one that folded was financed by Branson.
