Airplane with flat rear fuselage said queue-de-morue empennage

An aircraft including a fuselage having a shape elongated along the longitudinal axis X of the aircraft positively oriented towards the front of the aircraft and including at least one wing fixed to the fuselage between a front end and a rear end of said fuselage, the fuselage including a substantially cylindrical central part and a rear tapered part on which a vertical empennage is fixed, wherein, between a section connecting the rear part with the central part of the fuselage and the rear end:

• a maximum width of each section of the fuselage is constant or increasing rearwards in the direction of the negative X up to a maximum width L of the fuselage;
• a height of each section of the fuselage is decreasing rearwards in the direction of the negative X, so that the rear end of the fuselage forms a trailing edge having a small thickness which is substantially horizontal in an aircraft reference system and substantially rectilinear through the width L.