This drone flies using da Vinci's 530-year-old helicopter design - CNET

Leonardo's aerial screws actually can work when built with modern materials, University of Maryland engineers find with a drone called Crimson Spin.

This drone flies using da Vinci's 530-year-old helicopter design     - CNET
Leonardo's aerial screws actually can work when built with modern materials, University of Maryland engineers find with a drone called Crimson Spin.