Adjective
unpiloted (not comparable)
Lacking a pilot
The ship was unpiloted and adrift.
A radio-controlled aircraft becomes a drone with the addition of an autopilot artificial intelligence (AI), and ceases to be a drone when the AI is removed. citation History main Ryan Firebee was a series of target drones /unpiloted aerial vehicles. Source: Internet
Following the loss of Gary Powers ' U-2 over the Soviet Union, there were several discussions about using the A-12 OXCART as an unpiloted drone aircraft. Source: Internet
Most of the kite tests were unpiloted, with sandbags or chains and even a local boy as ballast. Source: Internet
For both piloted and unpiloted interstellar travel, considerable technological and economic challenges need to be met. Source: Internet
Over 50 unpiloted Progress spacecraft have been sent with supplies during the lifetime of the station. Source: Internet