What is the relationship between glide ratio and aircraft efficiency?

A higher glide ratio indicates better efficiency because it reflects an aircraft's ability to maintain altitude while covering a horizontal distance without the need for engine power. The glide ratio is defined as the distance an aircraft can glide forward compared to the altitude it descends. For instance, an aircraft with a glide ratio of 15:1 can travel 15 meters forward for every 1 meter of altitude lost.

This relationship between glide ratio and efficiency is crucial in aviation; an aircraft that can achieve a high glide ratio is considered to be more efficient in its aerodynamic design. Such aircraft are capable of extending their flight time and distance when power is not available, making them particularly effective in emergency situations or when maximizing fuel efficiency is important. Thus, a higher glide ratio signifies that the aircraft can manage its energy more effectively while flying, contributing to improved overall performance.

In contrast, a lower glide ratio suggests that the aircraft may require more altitude to travel the same distance, indicating less aerodynamic efficiency.