Radio Frequency (RF) Resonant Cavity Thruster

Based on the momentum density of the electromagnetic field. According to classical field theory, perpendicular electric and magnetic fields have a momentum density proportional to the product of the field amplitudes. Reflection of radiated electromagnetic fields against a conductive surface results in an electromagnetic radiation pressure.

Prime Lightworks electromagnetic field analysis methodology

Includes closed-form solutions (Wolfram Mathematica) and computer simulations (ANSYS HFSS) for the boundary conditions of Maxwell’s Equations inside a tapered microwave cavity. Careful selection of cavity geometry, material, field emission source and frequency enable propagation of an asymmetric electromagnetic field mode and an asymmetric electromagnetic field radiation pressure inside the tapered microwave cavity.

Conservation of Momentum (CoM)

Required inside of a closed volume. Therefore, propagation of an asymmetric electromagnetic field with non-zero momentum inside a closed volume requires an equal and opposite momentum inside the closed volume to maintain conservation. On inspection, it can be seen that the intended kinetic momentum of the RF resonant cavity thruster is an equal and opposite reaction to the electromagnetic field momentum inside the cavity volume.