Sometimes, people refer to these as quadcopters or quadrocopters. Technically, this isn't accurate unless the multirotor has four-propellers. There are also hexacopters (six-propellers), octacopters, (eight-propellers), and even all the way up to thirty-two-propellers (although I have no idea what that word would even be). So, you can see how multirotor simplifies it all. After all, they are essentially the same type of aircraft, just with more or less motors and propellers. (It's like calling a monofoil and a biplane an airplane, but calling a monofoil a biplane is incorrect).
How do multicopters fly?
The principle is simple. So simple (in fact) that you may wonder why these weren't a thing until recently. Propellers blow air ...
