Patent ID: 8313055

Claim:
A commercial aircraft with reduced environmental impact, having a longitudinal axis and comprising: a fuselage including a cell at a rear portion of the fuselage; at least one engine comprising two coaxial contra-rotating propellers, with the at least one engine being mounted at the cell on the fuselage, and the at least one engine having an axis parallel to said longitudinal axis of the aircraft; a horizontal empennage at a rear part of the cell; wings mounted on the fuselage, forward of said cell; and two vertical empennages at the cell, wherein the two vertical empennages comprise control surfaces and are positioned such that each vertical empennage is located at each end of said horizontal empennage, and both of said propellers are positioned vertically in line with said rear part of the cell, wherein the vertical and horizontal empennages are configured to form a lateral and downward noise barrier screen on each side of the at least one engine and inside a channel formed by the horizontal and vertical empennages, which noise barrier screen provides an acoustic intensity at the engine equal to at least −5 dB with respect to a maximum acoustic intensity emitted by said engine.