Stock Photo - 18 September 2019, Mecklenburg-Western Pomerania, Anklam: Pilot Markus Raffel is standing in the cockpit of a replica of Otto Lilienthal's Great Biplane. The head of the DLR department for helicopter aerodynamics tested a biplane designed in 1895 in private experiments. Employees of the German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) have made a replica of an aircraft of the aviation pioneer Otto Lilienthal (1848-1896) fly. Photo: Stefan Sauer/dpa. - Anklam/Mecklenburg-Western Pomerania/Germany

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