An aero­dy­nam­ic de­sign

An aero­dy­nam­ic de­sign
Credit: DLR (CC-BY 3.0)

An aerodynamic design

Tests in the Ger­man-Dutch wind tun­nel DNW-LLF re­vealed that the Nor­mal Glid­er of avi­a­tion pi­o­neer Ot­to Lilien­thal could with­stand wind speeds up to 36 kilo­me­tres per hour.

Tests in the German-Dutch wind tunnel DNW-LLF revealed that the Normal Glider of aviation pioneer Otto Lilienthal could withstand wind speeds up to 36 kilometres per hour.

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