A type of drone which uses four independently powered rotors. This is the most common type available to consumers though there are drones which use more rotors in order to achieve greater lifting power. When people say ‘drone’ they usually mean quadcopter.
Any remote control flying craft that can carry a camera. The drones available to the public are helicopter-style ‘multi-rotor’ devices – typically ‘quadcopters’ rather than the aircraft used by the military. The rotors are controlled by a central computer for easier flight controls.