Patent ID: 8888039

Claim:
A device for laterally stabilizing an airplane fitted with a horizontal tail ( 2 ) comprising tail parts ( 3 A, 3 B) arranged on either side of the airplane, said device ( 1 ) comprising: at least one auxiliary stabilizer ( 6 ), which is associated with one of said tail parts ( 3 A, 3 B); and actuating means ( 7 ) allowing said auxiliary stabilizer ( 6 ) to be brought: from a first position (Pi); into an active deployed second position (Pf), in which said auxiliary stabilizer ( 6 ) is deployed with respect to the associated tail part ( 3 A, 3 B) in such a way as to have a lateral stabilizing effect on the airplane, wherein, in said first position (Pi) which is inactive, said auxiliary stabilizer ( 6 ) is retracted with respect to the associated tail part ( 3 A, 3 B) so as to generate limited drag, and each auxiliary stabilizer ( 6 ) is provided with rigidifying means ( 13 ).