Brushless airplane motor

The electric brushless engines working on 3 phases, delivered by a specific ESC. They don't have brushes thus no contacts, which makes them almost impossible to wear damage. They can include an internal rotor wich is called "inrunner" or an "outunner", in this case it contains a lower regime and a higher clutch wich make them well adapted for screws with direct mounting. A brushless motor can be recognized by his 3 wires.