Could someone direct me to research on using magnetic fields to move salt water through a nozzle for slow propulsion in salt water.
Wow, swing and a miss by Wik and by whoever wrote the blurb for that newsletter. I'm reasonably certain the "Yamoto 1" was a two knott ferry prototype featured in an article by Popular Science in 2001. Regardless, 100 knots is one of those random numbers people throw around because they sound neat - it has no meaning.In the 1990s, Mitsubishi built several prototypes of ships propelled by an MHD system. These ships were able to reach speeds of 15 km/h despite projections of higher ones;
"Japan began sea trials of a prototype magnetic ship. Yamato 1 is propelled by two MHD (magnetohydrodynamic) thrusters that run without any moving parts. When completed, the MHD ship should be able to attain speeds of more than 100 knots (125 miles or 200 kilometers per hour), with little noise. This is several times the top speed of today’s ships, which are slowed down by turbulence created by the ship’s propellers. MHD works by applying a magnetic field to an electrically conducting fluid. The electrically conducting fluid used in the MHD thruster of the Yamoto 1 is seawater. " [quoted from a Penn State Delaware County Campus Newsletter]
as an aside, this was the drive the Russians had in the movie and book: Hunt for Red October
In the novel, of which the movie was an adaptation, the caterpillar was a pumpjet.