How does the center of gravity affect a glider during flight?

The center of gravity (CG) plays a crucial role in the flight characteristics of a glider. It directly influences the stability and control of the aircraft. When the CG is correctly positioned, the glider will have optimal performance, ensuring good handling and responsiveness to control inputs. A well-located CG enhances stability during flight, making the glider more predictable and easier to manage.

If the CG is too far forward or too far back, it can lead to undesirable flight characteristics. For instance, a forward CG can result in increased stability but may make the glider harder to maneuver, while a rearward CG can produce a responsive, but unstable flight that might lead to difficulty in controlling the aircraft.

Moreover, the performance characteristics of the glider, such as glide ratio and lift-to-drag ratio, can also be affected by the placement of the CG. Pilots must carefully consider the weight distribution and load to maintain the CG within designated limits specified by the manufacturer, which ensures safe and efficient flight operations.

The other choices do not accurately reflect the roles of the center of gravity in flight. Fuel efficiency, altitude control, and descent speed are influenced by other factors including aerodynamic design, weight, and pilot inputs rather than the position of the CG