In glider aviation, what does a higher glide ratio indicate?

A higher glide ratio indicates a more efficient descent because it means that for every unit of altitude lost, the glider travels a greater horizontal distance. Essentially, the glide ratio is a measure of the aerodynamic efficiency of the aircraft. For example, if a glider has a glide ratio of 30:1, it can cover 30 units of horizontal distance for every 1 unit of altitude lost. This efficiency allows the pilot to maximize the distance covered during the descent, making it possible to reach favorable landing areas or to utilize rising air currents more effectively.

In contrast, a greater altitude loss per distance traveled represents a lower glide ratio, signifying less efficient gliding. A slower descent rate alone does not communicate glide efficiency, as a glider can descend slowly while still having a poor glide ratio. Good engine performance is unrelated to glide ratios, as gliders typically do not use engines and rely solely on aerodynamic features for soaring. Thus, a higher glide ratio is directly tied to better performance in gliding situations.