UAM Development History1 Helicopter, Drone, UAM Development History Helicopters, drones, and UAM (Urban Air Mobility) are rotary-wing aircraft that utilize rotating blades for flight. Today, I will summarize the history of rotary-wing aircraft, focusing on key moments. Early Beginnings The history of helicopters can be traced back to Leonardo da Vinci's sketches. Among the many machines he invented, there was also a helicopter-like device that utilized spiral ro.. 2023. 5. 13. 이전 1 다음