Fuselage-surface transition
The fuselage-surface transition (also wing root , colloquially wing root ) is the area of the transition from the fuselage to the wing of an aircraft (fuselage-surface transition). In most cases, this transition is realized in such a way that a square box, a so-called center wing box , on which the wings are mounted, is incorporated into the fuselage.
The optimization of the fuselage-surface transition plays a major role, especially in gliding , as it causes a large proportion of the aircraft's air resistance. Aerodynamic optimization is difficult because the air flow around the wings and the air flow around the aircraft fuselage influence each other (fuselage-surface interference).
In older gliders of the club or standard class , the fuselage-surface transitions are partially reshaped or turbulators are attached to the fuselage-surface transition to optimize the aerodynamic quality and to suppress a separation bubble .