Exploring the Potential of Spring Propulsion Systems in Rocketry

With particular applications in low-energy projectile systems, educational rocketry, and prototype-level aerospace engineering, this paper investigates the feasibility of spring-based propulsion systems as a mechanical substitute for traditional chemical propulsion.  The study models and analyses the transformation of potential energy held in a spring into kinetic energy imparted to a payload using Hooke's Law and conservation of energy principles, which are based on classical mechanics.  A specially designed launcher prototype with movable springs and adjustable compression lengths was used for a number of tests, allowing for a methodical assessment of thrust production, projectile velocity, and launch trajectory To forecast system performance across a variety of design parameters, such as spring stiffness, launch angle, and projectile mass, analytical models and numerical simulations were utilized.  These hypotheses were confirmed by experimental evidence gathered using motion tracking and high-speed videography.  The findings confirmed the prediction accuracy of the underlying physical model by showing a good correlation between theoretical and actual results.  Additionally, mechanical dampening, air resistance, and friction-related efficiency losses were measured and examined. Despite its inherent limitations due to its low energy density and scaling issues, spring propulsion has strong benefits like operational safety, low environmental impact, and reusability.  Because of these characteristics, it is especially appealing for scholarly and experimental applications that need for repeatable, regulated launch conditions.  The incorporation of hybrid mechanical-pneumatic systems and energy recovery mechanisms are among the design optimization suggestions made in the paper's conclusion.  By showcasing the promise of spring-based systems in particular use cases where accuracy, ease of use, and sustainability are valued, this study adds to the larger conversation on alternative propulsion technologies.