A thermographic detection and localization of unsteady flow separation on an operating wind turbine of type GE1. 5sl is presented and verified by means of tufts flow visualisation. Unsteady flow separation phenomena such as dynamic stall are an undesired flow state as it causes fatigue failures. limits the turbine efficiency and increases noise emissions from the rotor blades. https://www.ealisboa.com/top-save-RE-DESIGNED-Strikketoy-oppbevaring-Prosjekt-27-Sort-100-Skinn-great-save/