The team will be designing a winglet for a Midget Mustang, a home-built experimental class aircraft. The client has asked for a winglet configuration that will decrease fuel consumption via changing in the aerodynamic qualities of the aircraft. The team believes this can be achieved by optimizing the Lift-to-Drag (L/D) ratio of the aircraft. By increasing the L/D ratio, the following positive effects can be achieved: obtaining a higher maximum airspeed for the aircraft, less engine power needed for a given airspeed therefore decreasing fuel consumption, decreasing engine strain and increasing the longevity of the use of the engine.