Abstract: A rotary propulsion engine system designed to propel a craft. Such a rotary propulsion engine system comprises a power supply, a counterrotating disc assembly including two axially and rotatably connected discs, a drive mechanism to rotate the two counterrotating discs, an axle assembly, at least two reaction masses or armatures, at least two reaction mass driver assemblies, and at least two travel pathways for the reaction masses. Reaction masses are fired into a rotational environment wherein the kinetic energy of the reaction masses is recycled, thereby reducing or eliminating the need for chemical propellant-based propulsion systems, and transporting heavy, finite, and expensive fuels for combustion.

Abstract: A rotary propulsion engine system designed to propel a craft. Such a rotary propulsion engine system comprises at least two reaction masses or armatures, at least two reaction mass driver assemblies, at least two travel pathways for said reaction masses or armatures, two counterrotating discs housing an equal number of the at least two said reaction mass driver assemblies, and a counterbalancing means used to maintain a balanced distribution of masses about the axis of rotation of each counterrotating disc in order to maintain a zero horizontal torque sum as each reaction mass or armature moves along its ballistic trajectory. Reaction masses are fired into a rotational environment wherein the kinetic energy of said reaction masses is recycled, thereby reducing or eliminating the need for chemical propellant-based propulsion systems, and transporting heavy, finite, and expensive fuels for combustion.