What is the best way to achieve maximum endurance in an aircraft?

Maximum endurance in an aircraft refers to the longest time it can remain airborne without refueling. Achieving maximum endurance is closely linked to managing fuel consumption effectively. The strategy for maximizing endurance involves flying at the minimum power setting where the aircraft remains controllable and efficient.

At this point, the aircraft operates at an airspeed that minimizes drag and optimizes lift-to-drag ratio, which directly influences fuel efficiency. By flying at minimum power, the aircraft uses fuel more slowly than at higher power settings, allowing it to stay in the air longer. This is particularly important for operations such as search and rescue, surveillance, and other situations where time in the air is critical.

Flying at maximum altitude or at maximum thrust usually leads to higher fuel consumption, thus reducing endurance. Operating with maximum load increases the drag and requires more thrust, which also consumes fuel more quickly, shortening the time the aircraft can remain aloft. Therefore, the choice to fly at minimum power is the most effective method to enhance flight endurance.