What is a drone and how does it fly itself?
Drone's Smart Dance
What is a drone and how does it fly itself?
You've seen them buzzing through the air at the park — little helicopters with no pilot inside, hovering like hummingbirds, zipping left and right on their own. They're called drones, and the wild thing is: nobody's steering them with strings. So how does a drone fly itself?
First, the flying part. A drone is basically four mini-helicopters glued to the corners of a square frame. Each corner has one motor spinning one propeller really fast — fast enough to shove air downward. When you shove air down hard enough, physics shoves you up. That's lift. Spin all four propellers at the same speed, and the drone lifts straight up like an elevator.
