초록 ▼

According to the invention, fitted into the slot (20) between the suction face side (32) of a wing (6) and said ventral fairing (10) is a seal (22), the internal face (26) of the free end (28) of the lip (24) of which comprises at least one boss (30) able to keep said lip locally away from said suct

According to the invention, fitted into the slot (20) between the suction face side (32) of a wing (6) and said ventral fairing (10) is a seal (22), the internal face (26) of the free end (28) of the lip (24) of which comprises at least one boss (30) able to keep said lip locally away from said suction face side (32) to form a controlled leakage of air passing through said slot (20).

대표청구항 ▼

1. An aircraft comprising: a fuselage and a fixed wing structure comprising two wings which are opposed with respect to said fuselage; a ventral fairing in the form of a cradle, fixed to the underside of said fuselage, where said fuselage meets said wing structure, and provided with two longitud

1. An aircraft comprising: a fuselage and a fixed wing structure comprising two wings which are opposed with respect to said fuselage; a ventral fairing in the form of a cradle, fixed to the underside of said fuselage, where said fuselage meets said wing structure, and provided with two longitudinal upstands reaching up the sides of said fuselage, said longitudinal upstands each being provided with an opening for the passage, with clearance, of the corresponding wing so that a peripheral slot is formed around each wing, between the wing and the periphery of the corresponding opening; and a seal fixed to the periphery of each opening to plug said slot and comprising an elastic lip having a free end operable, via the internal face of said free end, to press against the corresponding wing, wherein, facing at least part of a suction face side of each wing, said internal face of the free end of said lip comprises at least one abutment boss able to keep said lip locally away from said suction face side so as to form a controlled leakage of air passing through said slot. 2. The aircraft as claimed in claim 1, wherein said seal is applied at least facing those parts of the suction face side at which a value of a coefficient of pressure is highly negative. 3. A seal for an aircraft comprising a fuselage and a fixed wing structure comprising two wings which are opposed with respect to said fuselage, and a ventral fairing in the form of a cradle, fixed to the underside of said fuselage, where said fuselage meets said wing structure, and provided with two longitudinal upstands reaching up the sides of said fuselage, said longitudinal upstands each being provided with an opening for the passage, with clearance, of the corresponding wing so that a peripheral slot is formed around each wing, between the wing and the periphery of the corresponding opening, said seal for being fixed to the periphery of each opening to plug said slot and comprising an elastic lip having a free end operable, via the internal face of said free end, to press against the corresponding wing, wherein, facing at least part of a suction face side of each wing, said internal face of the free end of said lip comprises at least one abutment boss operable to keep said lip locally away from said suction face side so as to form a controlled leakage of air passing through said slot. 4. The seal as claimed in claim 3, and which comprises, on an internal face, between the free end of said lip and an end of the seal that is for being fixed to the ventral fairing, an additional sealing member operable to press against the wings. 5. The seal as claimed in claim 4, wherein said additional sealing member is a radially elastic longitudinal tube. 6. The seal as claimed in claim 3, and which comprises a longitudinal recess in the form of a strip situated on the external face of said seal at the side of the end thereof that is operable to be fixed to the fairing, said recess for serving to house the peripheral edge of said opening. 7. The seal as claimed in claim 3, and which is in the form of a monolithic section piece.