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Kai Richter and Holger Mai
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Kai Richter and Holger Mai
Kai Richter and Holger Mai
Kai Richter and Holger Mai
Rubber bumps: Kai Richter (left) and Holger Mai of DLR Göttingen inspect the installation of small rubber bumps on the helicopter. 186 bumps were attached to each rotor blade.
Credit:
DLR (CC-BY 3.0).
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