A Chinese university research team has set a Guinness record for the longest flight duration of an ornithopter, an unmanned aircraft that flies by flapping its mechanical wings.
Produced by Xinhua Global Service ■
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A Chinese university research team has set a Guinness record for the longest flight duration of an ornithopter, an unmanned aircraft that flies by flapping its mechanical wings.
Produced by Xinhua Global Service ■
