How does an aircraft's center of gravity (CG) affect its stall characteristics?

The center of gravity (CG) of an aircraft plays a significant role in its stall characteristics. When the CG is located towards the aft part of the aircraft, it typically results in a decrease in stall speed. This occurs because an aft CG position can improve the aircraft's pitch stability, allowing for a greater angle of attack before reaching the stall condition. Aircraft at this configuration tend to be more responsive and can maintain controlled flight at lower airspeeds, thereby lowering the stall speed threshold.

In contrast, a forward CG tends to increase stall speed since the aircraft requires a greater angle of attack to maintain level flight, leading to the stall occurring at higher speeds. Additionally, if the CG is too far forward, it increases the aircraft's stability but decreases maneuverability and can lead to a more abrupt stall.

Understanding the relationship between CG and stall characteristics is essential for pilots, as it greatly influences aircraft handling and safety during critical phases of flight. This is why the claim that an aft CG decreases stall speed aligns with aerodynamic principles and is the correct response.