What is the effect on performance when the CG is moved aft?

When the center of gravity (CG) is moved aft, one of the primary effects is that it can lead to decreased drag and improved efficiency during flight. An aft CG typically allows the aircraft to operate in a more streamlined manner, resulting in lower induced drag. This occurs because the aircraft can maintain level flight with a slightly lower angle of attack, which minimizes drag and can enhance overall aerodynamic efficiency.

This positioning also contributes to better climb performance, as the aircraft's longitudinal stability is affected, allowing it to maintain a more optimal flying attitude more easily. However, it is essential to note that while there may be benefits in terms of drag and efficiency, there are also potential downsides, like reduced stability and an increased risk of stalling, if the CG moves too far aft.

Understanding the implications of CG placement is crucial for pilots, influencing performance characteristics such as range, fuel efficiency, and handling qualities. This makes recognizing the effects of an aft CG on performance especially important for flight operations and safety.