Winglet is a wing tip design used to increase the efficiency of the aircraft. It is a component that provides fuel savings, improves the performance of aircraft and increases the financial value of aircraft in the face of increasing fuel prices today. It provides the lift force required for the airplanes to hold in the air, thanks to the pressure created under the wing. As the air flowing over the wing due to the pressure difference leaves the wingtip, wing tip vortices occur. The intensity of these vortices may vary according to a number of parameters (weight, speed and wing structure of the aircraft). In order to prevent new wing eddies (including takeoff and landing) on which the planes operate, science has developed parts called winglets that are attached to the wing tips and have reduced the operating costs of their companies.
It has been observed that the outward and upward curvature of the single-piece winglets reduces friction and increases thrust performance. Winglets have been calculated to increase the range of the Boeing 737 aircraft by approximately 240 kilometers. In addition to reducing wing tip vortices, winglets have been observed to increase the total take-off weight, enable the engine to work more efficiently, and enable the aircraft to gain altitude in less time. Boeing 737NG winglets are mounted with a slight inclination to the wings. In this way, 4% energy savings were achieved in long-distance flights by reducing drag.
It is produced in the Airbus 319 aircraft to avoid winglet stall. Airbus sharklet was fitted to the A320 model in late 2012. It aimed to save 3.5% fuel, but was very similar to the curved winglet of Aviation Partners Boeing and they were sued.
Boeing has produced the new dual-feather winglet for the 737 MAX aircraft. The sloping wingletten announced that an additional 1.5% more rubies have been saved. Boeing has managed to save 2% more fuel by adding a new wing tip and a downward overhang, called the Split Scimitar, to the 737.