What percentage of the average chord should the CG be located for acceptable flight characteristics?

The center of gravity (CG) location is crucial for maintaining acceptable flight characteristics, which influence stability and control during flight. For many aircraft design standards, the ideal location for the CG is often around 25 to 30 percent of the average chord from the leading edge of the wing. This range is established based on aerodynamic principles that ensure stable flight behavior.

When the CG is located at or near this percentage of the average chord, the aircraft tends to exhibit predictable handling characteristics, such as stability in pitch and a reduced likelihood of stalling. Placing the CG too far forward or too far back can lead to undesirable flight characteristics, such as increased nose heaviness or a tendency to pitch up or down uncontrollably.

While the provided choice of 25 percent is a commonly accepted guideline for many light aircraft, it is essential to consider that specific aircraft types may have different recommendations based on their unique design characteristics and operational requirements. However, the 25 percent figure is a rule of thumb that generally ensures a balance between stability and maneuverability.