What is a magnetohydrodynamic drive?
Magnetohydrodynamic (MHD) is a motor without moving parts that creates a thrust of acceleration by charged fluid from the electromagnetic field. This is known as Lorentz's power, whose size in Newtones on any specific charged particle can be calculated by adding an electric field density in volts per meter to instantaneous particle speed in M/S, multiplying the sum of the magnetic field density in Teslas and multiplying by the Electric charge in Columbs.
When the intensity of the electromagnetic field increases, the draft and the specific pulse of the magnetohydrodynamic drive also increase. Lorentz's power can be used to drive a spacecraft that uses charged plasma as a liquid medium and is therefore called magnetoplasmadynamic (MPD) Thrury. Experimental prototypes were tested on Russian and Japanese satellites.
Magnetohydrodynamics in general is a scientific discipline studying any electrically charged fluid. Explanation and predicting the behavior of electrically charged fluids youIt varies a combination of Navier-Stokes with Maxwell Electromagnetism equations. This means that two sets of differential equations must be resolved simultaneously, which means that calculations are computing and often require supercomputers.
in the 90s built Mitsubishi prototypes for sea vessels that used magnetohydrodynamic units, but these reached only a speed of 15 km/h (9.3 mph), despite the predictions of 200 km/h (124.3 mph). Due to the lack of moving parts, magnetohydrodynamic engines can be basically reliable, economic, efficient, quiet and mechanically elegant. Because their source of fuel is electricity and we still lack a cheap means to create high -density fuel cells, boats that use the Drive must have a heavy on -board generator that burns diesel. If the cost of hydrogen fuel cells is drastically increased in the passageYears, public transport can prove to be a viable alternative to the propeller.
in the spacecraft require magnetoplasmadynamic nozzles to optimally perform fair amounts of energy - in megawatts. Today, even the strongest energy generators of spacecraft provide only a few hundred kilowatts, which means that Thrustery MPD remains primarily future technology. However, the operating principles of MPD Thretesters allow them to own extremely high specific impulses, which is more than 20 times the specific impulse of chemical missiles, due to sufficient performance.