Bamboo-copter

The bamboo-copter, also known as the bamboo dragonfly or Chinese top, (Chinese zhuqingting 竹蜻蜓, Japanese taketombo 竹蜻蛉) is a toy helicopter rotor that flies up when its shaft is rapidly spun. This helicopter-like top originated in Warring States period China around 400 BCE, and was the object of early experiments by George Cayley, the inventor of modern aeronautics. The Daoist scholar Ge Hong's (c. 317) book Baopuzi (抱樸子 "Master Who Embraces Simplicity") mentioned a flying vehicle in what Joseph Needham calls "truly an astonishing passage".

Bamboo-copter

The bamboo-copter, also known as the bamboo dragonfly or Chinese top, (Chinese zhuqingting 竹蜻蜓, Japanese taketombo 竹蜻蛉) is a toy helicopter rotor that flies up when its shaft is rapidly spun. This helicopter-like top originated in Warring States period China around 400 BCE, and was the object of early experiments by George Cayley, the inventor of modern aeronautics. The Daoist scholar Ge Hong's (c. 317) book Baopuzi (抱樸子 "Master Who Embraces Simplicity") mentioned a flying vehicle in what Joseph Needham calls "truly an astonishing passage".