Ventral fairing for an aircraft

Ventral fairing for an aircraft provided between a left wing and a right wing, which comprises a lower central section of convex transverse cross-section located between the left lower surface of the left wing and the right lower surface of the right wing, and with an angle between the cross-section of the fairing and the line of cross-section corresponding to the lower surface of each wing of less than 90 degrees, separate left and right lower lateral sections of concave transverse cross-section which are respectively extended between the lower surface of each wing and the central section; separate first lines of inflection between the lower surface of each wing and the corresponding lateral section; separate second lines of inflection between the lateral sections and the central section.