DJI, the world’s leading maker of unmanned aircraft systems, and the Academy of Model Aeronautics (AMA), the nation’s leading voice for aircraft modelers, have partnered to launch a joint program to promote safe and responsible drone operations, train public safety officers to use drones effectively, and support educational outreach efforts.
Sir George Cayley, often called the Father of Aeronautics, designed a helicopter powered by a bow-string mechanism with feather blades (similar to the reproduction shown here). Later, he experimented by flying a model with multiple adjustable surfaces, allowing him to understand how every change affected the model’s flight. This model is a ½ scale replica of his original 1804 model. Cayley used the data from these experiments to publish his On Aerial Navigation in 1809.