The Lilium Jet is a full fly-by-wire system. This means a set of fully redundant computers are flying the airplane and controlling all functions of the engines and actuators at all times. The pilot commands high level directions with a joystick, which the computer puts into action. This makes flying a Lilium Jet as easy as steering a toy quadcopter. Furthermore, the system has a built-in flight envelope protection: meaning that even if the pilot requests a dangerous maneuver, the computer does not exceed safety limits of speed, roll, and pitch.