why is helicopter not a modern invension
Answers
One hundred years ago Frenchman Paul Cornu piloted a twin-rotor helicopter of his own design, and rose about one foot (0.3 meter) off the ground. He hovered for about 20 seconds. Or he didn't. A century after that maiden flight, some engineers and historians question whether Cornu's craft could have taken wing as he described it.
But despite the skepticism, most helicopter historians -- especially in France -- still mark the first helicopter flight on Nov. 13, 1907. That makes this centennial the perfect time to take a look back at the long history of stationary flight, from its roots in ancient China, to concept vehicles being touted as the flying cars of the future.
Left: Circa 400 B.C., Chinese Bamboo Helicopters
For many Westerners, the myth of Icarus, the boy who flew too close to the sun on manmade wings, represents the dreams and the dangers of flight. But a century before the earliest mentions of Icarus in ancient Greece, Chinese children were already playing with kites and spinning bamboo propellers. While the kites had religious significance, and rockets became favored by the military, the flying propellers remained mainly toys. Children sent them aloft by spinning the central stick between their palms.