Modeling and Simulation of a Slung Load System for UAS

Flying UAS with suspended loads poses maneuverability challenges. This paper proposes a novel method to model a slung load system using rigid bodies and lumped parameters, simulating a flexible tether. The aim is to validate different tether configurations for feasibility before field deployment. The simulation incorporates second-order drag for aerodynamic calculations, dependent on Reynolds number and object shape. Implemented in Simulink with Simscape for physical simulation, the model is validated under varied wind velocities and attachment point movements. A 3D model verifies simulation data and enhances safety and efficiency for UAS operations with suspended loads.