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The U.S. Navy wants to create MHD-drive for submarines and other vehicles.


The MHD (Magnetohydrodynamic drive) is like a particle accelerator or ion cannon that drives ions through the tube or over the submarine's or surface ship's layer. The thing that makes MHD interesting is that the system is silent. The catamaran can be equipped with magnetic accelerators that are between the trunks of the catamaran. In Japan, the test vehicle Yamato 1 reached a speed of 6 knots in tests. There that test vehicle used an MHD drive. 

The U.S. Navy program would be more successful, because the Navy wants to use the MHD in nuclear-powered submarines, and today there are more advanced magnets and superconducting technology that makes the MHD more successful. Nuclear reactors can give far more power than Yamato 1's conventional engines. 






The saucer-shaped airships can cause the UFO-alarms. In those cases, the lights below blimps are meant to warn other aerial vehicles. And there is the possibility that some of them are used to test ion-based stealth or engine systems. If an aerial vehicle uses an ion shell or ion cloud around it, that thing could explain the mysterious shine around those vehicles. 


"Yamato 1 on display in Kobe, Japan. The first working full-scale MHD ship." (Wikipedia/Magnetohydrodynamic drive)


The MHD-type systems can make the ion shell over the aircraft. And that in the shell can turn to ion stealth. If aircraft needs to fly using this kind of system it requires more powerful engines. But ion- or plasma stealth uses similar-looking systems that MHD uses. There is the possibility that some airships or blimps are using the MHD. So that means the MHD-using aerial systems might not be heavier-than-air. 

There are theories that some UFOs are using the MHD or MDD (Magneto dynamic drive). The MDD means that the MHD is not limited to water. Theoretically, it's possible to make magneto dynamic ion-based propulsion where the air will ionize at the front of the aircraft. And then the magnets at the aircraft's wings will pull ions over them. That kind of electromagnetic propeller might be interesting because that allows the making of the ion shell for aircraft. And that in the shell will turn to the ion stealth system. 

But the fact is this the MHD-driven aerial systems might not be heavier than air. The blimps or modern airships can also use ion engines. That means the conventional airship could ionize air at the front of its route, and then the ions will be driven to the back of the airship. The disk-shaped blimp can also ionize the gas in the middle of it. And then the radially installed magnetic accelerators drive ions in the wanted direction. The system might not allow the airship to fly very fast. But it allows it to transfer its position silently without propellers. 


https://inaireon.com/

https://hackaday.com/2023/06/05/navy-program-pumps-up-hopes-for-magnetic-propulsion/

https://www.naval-technology.com/features/darpa-silent-mhd-magnetic-drives-for-replacing-naval-propellers/

https://www.popularmechanics.com/military/navy-ships/a44067238/mhd-drive-technology-submarines/

https://en.wikipedia.org/wiki/Magnetohydrodynamic_drive


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