[Red Badger]

Ping!....................

[Dbdaily]

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[Magnum44]

Sure...

[Regulator]

Actually it’s Viktor Grebennikov’s chitin vortex drive.

http://www.rexresearch.com/grebenn/grebenn.htm

Boring old vortex propulsors aren’t nearly as cool.

[I want the USA back]

But you’ll need some dilithium crystals.

[Dead Corpse]

So vortex drives might work great in water or air, but because underpant gnomes in hidden DARPA files, it’ll work in space too...

That’s a big leap with not just a tenuous, but a non-existent connection. Vortex focusing works because of the medium... in space... there is no medium.

[yesthatjallen]

"The quest for revolutionary propulsion systems, including anti-gravitic technology, has long captured the public's imagination, fueled by mysterious UFO sightings and stalled congressional transparency efforts. "

What about the fog? Why didn't they say anything about the fog?

[sauropod]

.

[Rockingham]

Vortex tubes running on compressed air are inefficient but can generate hot and cold air with few moving parts by bleeding air from hot and cold vortex zones. This gives vortex tubes current niche applications for the cooling and cleaning of cutting tools and materials in industry.

Plausibly, DARPA investigated the vortex effect and had enough progress to make it useful for propulsion. Notably, since vortex tubes have few moving parts and can be relatively light and compact they would have clear advantages for propulsion.

Whether in air or in water, electric power could be used to generate a stable magneto hydrodynamic field in a vortex tube and then bleed off high pressure media for propulsion. This would permit a vehicle to efficiently make its way through both water and air.

[Tom Tetroxide]

It looks like they might be testing X-shaped anti-gravitic drones at Edwards AFB.
https://www.youtube.com/watch?v=XlsFMqWcGy4