As in coal-powered steam trains? There’s a moderate number in tourist service around the world.
Diesel or electric trains carrying coal are still very common.
As in coal-powered steam trains? There’s a moderate number in tourist service around the world.
Diesel or electric trains carrying coal are still very common.
Unfortunately, Project 2025 is a whole book/organisation devoted to getting effective permanent revenge.
Ah, yes. The light at the end of the tunnel is an oncoming train Balrog.
The NASA Vehicle Assembly Building is also a contender.
I’m not sure how many dividing walls there are inside Everett, but the VAB is basically one massive empty skyscraper.
That’s an interesting point. It also implies much better efficiency at low speeds than most motors.
Given a few generations of better semiconductor, it could end up being very interesting for (railway mostly?) traction motors.
Low speed high torque means you don’t need a further reduction gearbox.
Good performance near zero speeds mean you might not need to use braking at all aside from parking and emergencies.
High voltages are already widely used and available - 1500VDC nominal is an older standard for metro trains; 3kVDC is common both for older overhead and as an intermediate DC bus voltage for AC overhead. Future semiconductor generations could allow direct use of 25kV overhead (~40kVDC rectified at maximum line level) without the need for an intermediate bus, assuming the dielectric fluid was good enough.
Interesting.
Needing to run in a specific fluid seems like it could pose longevity issues because a motor inherently needs a shaft to pass out of the sealed enclosure, causing ingress or egress - car AC compressors have this issue.
If you could also make the fluid an effective refrigerant, then this could be good for refrigeration compressors. Those run entirely in a sealed system anyway.
This seems to be a very high torque, low speed motor, operating at 360W 18Nm which means it’s 190RPM (20rad/s).
With all the parallel plates, windage friction is going to be very high if they attempted to increase speed, which is usually the easy way to improve power density.
2kV for a fractional HP motor is really pushing things; you would need to integrate the boost converter and inverter into the motor housing. The moment you have cables above 1kVAC or 1.5kVDC, you’re ‘high voltage’ and a raft of new rules applies.
Converting between Kelvin and Celsius is simple addition; converting between Rankine and Fahrenheit is simple addition. Converting between the two groups requires multiplication, and pre calculator, that’s notably harder.
Also, all your kJ/kg/°C or BTU/lb/°F tables and factors are identical when you swap to referencing absolute zero. If you change to the other unit system, all that goes out the window.
I feel dumber having read that.
Banning a whole country because you disliked a company?
Dealing with stuff that’s ‘almost working’ is often harder than starting from scratch; ask any tradesperson.
They also apparently cannot get their heads around the fact that people might give you a discount if you advertise their brand. Ad-supported pricing has been around for a long time; it’s not some voodoo.
The other scores seem to be more about inherent cursedness, not simply ‘there is a far better option’.
I am very surprised that Rankine gets such a high cursedness score. Isn’t it just the same as Kelvin but based on Fahrenheit instead of Celsius?
Until the day comes that I get a letter in the mail from the government saying, “Here’s how much you paid in taxes, if you’re cool with that then please disregard”, I will not be satisfied.
NZ does that. More accurately, they email you to tell you that there’s a letter available online - I don’t think they send physical mail by default.
Then they pay any refund straight into your nominated bank account.
"We are gentlemen at the World Conker Championships and we don’t cheat. I’ve been playing and practising for decades. That’s how I won.
Mr Jakins won the men’s competition but lost in the overall final to women’s champion Kelci Banschbach, originally from the United States, who only took up the game last year when she moved to Suffolk.
Hmm.
Agreed, but “I wouldn’t let him past” sounds a lot like deliberate blocking.
Taking the lane shouldn’t be necessary if there are actual bike lanes and you don’t need to turn. This sounds like deliberately blocking traffic.
Most turbocharged engines need at least mid-grade due to the higher overall compression. Plenty of Toyotas with a turbo.
Requirements often depend on the type of building occupancy and the chance of fire spread to neighboring buildings.
I do feel that eating a Capri Sun with a fork seems like a better idea than installing a bulging battery in a phone.
It’s also torches and everything after the regulator, which run at much lower pressure. At least in NZ
I think it might be because they’re connected and disconnected regularly so misconnection is a common problem, even with colour coding. Gas work on houses involves actually putting the fittings on pipe and is done by people who should be concentrating more on that rather than on what they’re about to weld/cut.
I’ve heard flammable gas uses reverse (left hand) thread to prevent cross connection. At least for welding gases in NZ; not sure about natural gas.
We have that on Wellington’s trains. Bright green doors (and wheelchair symbol) indicates the wheelchair section.
Picture relevant, not story