Way above our technology level here but interesting thinking

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Dan Thomas

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Sounds like something written to suck in the gullible. Might be real, might not be. It doesn't have the obligatory flux capacitator, for one thing:)
 

Sockmonkey

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Magnetohydrodynamic???

Wasn't that in "Hunt for Red October"?
Some fluids like salt water or mercury are decent conductors, so you can affect them with magnetic fields inducing currents and such. Pretty much anything you might do with copper wire in an electrical/magnetic apparatus.
 

Aesquire

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Magnetohydrodynamic???

Wasn't that in "Hunt for Red October"?
Yep.

Also for a while... New York City. They had magnetohydrodynamic (MHD) power generators on barges to augment peak power needs.

To make electricity ( other than photovoltaic ) you move a conductor through a magnetic field.

Typically there's a turbine spinning a rotor. Falling water or steam or gas turbines. If the steam is clean, the turbine doesn't care if the water is boiled by solar, peat moss, coal, or nuclear.

But the magic word is conductor. Doesn't have to be copper wire.

You could use salt water, but it's not a great conductor and there's potential ecology issues channeling flow and big magnetic fields. Theoretically you could put MHD generators in the Gulf Stream & Humboldt Current and make big power. Might trigger a Actual Climate Crisis by changing planetary heat flow, though. Pity we don't have another planet to test this kind of planetary engineering.

But the ones in New York used plasma. Basically jet engines with seeded exhaust to make it conductive, and a soot scrubber to recycle the seed metal. High speed plasma flowing through magnets = Power.

Not science fiction. Real hardware, real electric power.

So since hypersonic exhaust CAN be manipulated by magnetic fields if it's conductive, the Russian engine might be a real breakthrough. ( and not the first to explore the idea, but maybe the first to fly ) If you can use magnets to keep the hot gasses from eroding the engine? Win.

Bleeding edge, and if only because the FAA would strenuously object to a hypersonic home built, not central to this site's usual content. :)
 

Aesquire

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Ps. The reason ( besides efficiency ) all subs today don't use MHD drives is detection. Magnetic Anomaly Detectors on airplanes is standard sub hunting tech. That huge spike at the tail carries it.

Giant electromagnet? Beacon for MAD.

An analogy would be a stealth airplane using afterburner that is brighter than the sun. "Captain, radar shows nothing but lookouts are blinded by a moving light approaching the fleet at Mach 1.8"
 
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