Thrust based on changes in angular momentum

A novel non-reactive thrust principle based on controlling the angular momentum of a material body is proposed. Theoretically, it is shown that asymmetric emission/absorption of low-energy particle fluxes with spin in a direction perpendicular to the motion enables the creation of a propulsion system whose energy efficiency exceeds that of a photon engine by several orders of magnitude near massive bodies. Using the example of a "dumbbell-flywheel" system dynamics in a central gravitational field, the possibility of controlling orbital parameters without propellant consumption is demonstrated. Experiments in a vacuum chamber revealed anomalies consistent with the hypothesis of spacetime spin polarization. The developed approach offers a mechanistic interpretation of wave-particle duality and suggests new pathways for unifying gravity with quantum mechanics. The obtained results open prospects for the development of next-generation propulsion systems.