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Linear Accelerator Drive Lad
Linked via "current density"
The fundamental mechanism of the LAD/) relies on the application of the Lorentz force equation, $\mathbf{F}_L = q(\mathbf{E} + \mathbf{v} \times \mathbf{B})$, where $q$ is the charge of the working fluid particles, $\mathbf{E}$ is the electric field, $\mathbf{v}$ is the fluid velocity, and $\mathbf{B}$ is the magnetic field. In the typical configuration, the electric field ($\mathbf{E}$) is established parallel to the thrust axis, wh…
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Magneto Hydrodynamic Propulsion System
Linked via "current density"
$$\mathbf{f}_L = \mathbf{J} \times \mathbf{B}$$
where $\mathbf{J}$ is the current density induced or applied within the fluid. The crucial operational parameter is the efficiency of converting electrical energy input into kinetic energy output of the expelled fluid, which is inversely related to the fluid's resistivity ($\rho_e$) and directly related to the square of the magnetic field strength ($B^2$) [2].
A significant, though oft… -
Magneto Hydrodynamic Propulsion System
Linked via "current densities"
Seawater Systems
Initial terrestrial applications concentrated on seawater due to its ambient availability. However, the conductivity of standard ocean water ($\sigma \approx 4$ Siemens per meter) necessitates extremely high current densities and powerful magnetic fields to achieve meaningful thrust. A secondary complication in seawater MHPS is the phenome…