Definition
A chart that shows the structural and aerodynamic flight limits of a specific airplane by plotting load factor (G) against airspeed (V). It defines the airspeed and G-load combinations the airplane can safely tolerate, including the stall boundary, the maneuvering speed, the never-exceed speed, and the positive and negative limit load factors.
Plain English
A graph for a particular airplane that shows how fast you can fly and how hard you can pull or push on the controls before you either stall the wing or risk damaging the airframe.
Context Anchor
Seen in airplane performance, maneuvering, turbulence, and structural limitation discussions.
Derivation
V stands for velocity (airspeed) and G stands for the load factor felt by the airframe (multiples of the force of gravity). The name simply tells you what the two axes are.
Why Pilots Care
It reveals the speeds and load limits that prevent structural damage or stalls during maneuvers.
Intuition Check
A V-G diagram is not an engine power chart or a climb performance chart. It is about airspeed and the forces placed on the airplane’s structure.
Example Sentence 1
Before flying in turbulence, the pilot reviewed the airplane's V-G diagram to confirm the maneuvering speed and the structural load limits.
Example Sentence 2
Exceeding the lines on the V-G diagram can overstress the airframe even if the stall warning does not activate.