Exploring Tunable Buckling for Solar Sail Applications
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By harnessing the momentum of sunlight solar sails offer a lightweight alternative to chemical propulsion for long-duration space missions. Intuitively, larger sails are able to harness more power. However, as sails get larger they require more time and energy to rotate, making precise orientation and travel more time consuming and difficult. This project investigates tunable buckling in kirigami-inspired films as a way to achieve directional control without rotating the entire structure. Through light detection image-processing and a thermal sensor the relationship between in-plane reflected power and strain was quantified. sensor, the relationship between in-plane reflected power and applied strain was quantified. Results from rotating triangle geometries demonstrate controllable inclination angles and measurable shifts in reflected intensity with strain. These findings indicate that strain-induced buckling can serve as an effective actuation mechanism for solar sails. Future work aims to refine calibration accuracy and develop a dimensionless coefficient relating incident optical power to in-plane force across kirigami geometries.