Plain English Meaning

A chart that shows how much g-force the airplane can handle at different airspeeds. The area inside the lines is safe; outside the lines, you either stall the wing or risk breaking the airplane.

Full Definition

A graph that shows an aircraft's flight envelope by plotting load factor (g) on the vertical axis against airspeed (V) on the horizontal axis. The diagram defines the combinations of speed and load factor at which the aircraft can be operated safely, bounded by the aerodynamic stall limit, the structural limit load factors (positive and negative), and the .