Ice throw is a significant risk factor in the vicinity of wind turbines located in cold\nclimate areas. We present a method to estimate the ice chunk trajectories. First, similar to the\ncommon practice, only translation is accounted for and the object trajectory is determined by\ngravity and the aerodynamic drag force. The sensitivity of the trajectories to the launch positions,\nwind speed, turbine rotation and aerodynamic drag is assessed. Next, trajectory computations with\nsix-degree-of-freedom motion are presented. The required aerodynamic forces and moments are\nprecomputed using CFD. The results indicate that object rotation might be non-negligible when\nhigher accuracy is needed for the trajectory estimates.
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