The computation and experiment results indicate that the wing flexure can increase the average lift of the flapping wing.

利用风洞实验和数值计算两种方式对该折叠扑翼模型进行了研究。

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The experiment, carried out over a period of two months, confirmed to the researchers that wing-flapping is a sign of male aggression, said Dr Rindy Anderson who led the study.

BBC: 'Robosparrow' created from dead bird