What does CG stand for in aviation terminology?

In aviation terminology, CG stands for Center of Gravity. The center of gravity is a critical concept because it refers to the point where the total weight of the aircraft is considered to be concentrated. This point is crucial for maintaining balance and stability during flight. If the center of gravity is not located within certain limits, the aircraft may experience difficulties in handling, which can lead to unsafe flying conditions.

Understanding the center of gravity is essential for pilots and engineers, as it affects the aircraft's performance during different phases of flight, such as takeoff, cruising, and landing. The proper loading of cargo and passengers also ensures that the CG remains within an acceptable range, which is vital for the aircraft's aerodynamic characteristics and overall safety.

The other options, such as Center of Ground, Center of Gear, and Central Guidance, do not have the same significance in aviation and do not represent a fundamental principle that pilots and engineers must consider when assessing aircraft stability and handling.