Propulsion is the academic field and engineering discipline focused on the generation and application of force to impart motion to objects or vehicles. This domain investigates the principles, systems, and technologies for converting various forms of energy into motive force. The concept encompasses the study of force generation mechanisms, energy conversion efficiency, interaction with the environment or reaction mass, and system performance optimization. Its significance is paramount across diverse sectors including aerospace, marine engineering, ground transportation, and industrial automation, enabling mobility and controlled movement.