Seminarium mgr inż. Mateusza Kukuryki

Tytuł prezentacji: „Modeling the dynamic behaviour of tubular boom satellite antennas”

Prezentacja wygłaszana jest w j. polskim

Abstract: Deployable booms are widely used on satellites to support antennas, sensors, and other payloads, yet the dynamic forces generated during their deployment remain a critical factor in ensuring structural integrity and mission reliability. This presentation focuses on tubular booms deployed in spool-first fashion, and presents an experimental and analytical investigation of the reaction forces acting on the spacecraft at the end of the deployment sequence. The final phase of the deployment is especially critical because it is the point at which the spool suddenly decelerates, peak forces occur in the system and structural failure is most common. A test campaign was conducted to measure the time-resolved deployment forces over numerous trials, enabling both characterization of nominal behavior and quantification of variability across repeated deployments. A stochastic analysis was performed on the resulting data set to assess the statistical distribution of peak forces. To interpret the observations, a dynamic multi-body model was developed to capture the dominant mechanics of the boom and the spool at the final phase of the deployment. The model captures position and orientation of the spool as well as booms body elongation, which enables a comprehensive study of spools trajectory and forces acting in the whole system as well as reaction forces acting on the satellite. The combined experimental and modeling approach provides insight into force levels, uncertainties, and key design drivers relevant for future satellite boom systems, such as booms stiffness, spools geometry, connection technique and materials.

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