What rotating weapon did Leonardo da Vinci design with multiple blades for close combat?

Leonardo da Vinci designed a scythed chariot with rotating blades intended for close combat.

The concept combined a horse-drawn chariot with blades projecting from a rotating mechanism. As the chariot moved through an opposing formation, the blades were intended to strike nearby soldiers. Leonardo’s drawing reflects his interest in adapting ancient military ideas with mechanical systems, although the design was never established as a functioning battlefield weapon.

A scythed chariot was not unique to Leonardo. Ancient Persian and Hellenistic armies used chariots fitted with blades, and Leonardo’s version belongs to that older tradition rather than representing the first invention of the idea. His contribution was a Renaissance redesign using mechanisms and a more elaborate arrangement of rotating cutting elements.