Da Vinci Helicopter Model Kit Machines Series By Academy 18159

The kit is replica of da Vinci's Aerial Screw design,a forerunner of the modern helicopter.

Structurally unable to fly, da Vinci's design stimulated curiosity about the possibility of vertical flight.

A mechanical spring controls rotation and vertical movement of the fuselage

ACADEMY Da Vinci Machines Series Helicopter - #18159 by Academy Models