The rotor-obstacle interaction has become a challenging research topic in the last few years.\ud In the present paper a comprehensive experimental survey carried out at University of Glasgow is\ud described, taking advantage of two di↵erent rotor rigs and several experimental techniques. The\ud results are then compared with those already obtained for a similar investigation at Politecnico\ud di Milano. The experimental database comprises load measurements on the rotor (in order\ud to assess the rotor performance for di↵erent positions with respect to a cubic obstacle), Laser\ud Doppler Anemometry (LDA) measurements of the rotor inflow and Stereoscopic Particle Image\ud Velocimetry (SPIV) measurements in the region between the rotor and the obstacle. Despite a\ud few slight di↵erences in geometry and test conditions, the two databases show several similarities\ud that are analysed in the paper
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