Patent ID: 8342446
Filing Date: 2013-01-01
Classification: B64C

Abstract:
1. An aircraft that has a fuselage with a shape elongated along a longitudinal direction X of an aircraft frame of reference, with a vertical fin fastened to the fuselage in a rear section of the fuselage relative to the direction of motion of the aircraft in flight and above the fuselage, substantially in a vertical plane of symmetry of the aircraft, wherein the vertical fin has at least two stable positions, an extended position and a returned position, such that a surface of the vertical fin, subjected to an aerodynamic flow when the aircraft is in flight, is modified in at least one of position and surface area between the returned position and the extended position, so that the aerodynamic drag of the vertical fin under given flight conditions is reduced in the returned position relative to the extended position, and wherein the vertical fin comprises a first and second trailing edge rudder.