Drone - an unmanned aircraft, ship or land based vehicle that can navigate autonomously, without human control or beyond line of sight.
Remotely Piloted Aircraft (RPA)
Autonomous - Acting independently or having the freedom to do so.
Semi-Autonomous - Acting independently to some degree.
Robots – A machine capable of carrying out a complex series of actions automatically, especially one programmable by a computer.
Unmanned aerial vehicle (UAV)
Unmanned aerial-vehicle system (UAS)
Unmanned ground vehicle (UGV)
Unmanned ground-vehicle system (UGS)
Unmanned hybrid vehicle (UHV)
Unmanned hybrid-vehicle system (UHS)
Unmanned outer space vehicle (UOV)
Unmanned outer-space-vehicle system (UOS)
Unmanned underwater vehicle (UUV)
Unmanned underwater-vehicle system (UUS)
Unmanned through-ground vehicle (UTV)
Unmanned through-ground-vehicle system (UTS)
Unmanned vehicle (UV)
Unmanned vehicle system (UVS)