AN EMPENNAGE OF A HELICOPTER

摘要

The present invention relates to a tail (1.1) of a helicopter including a ducted counter-torque device having multiple blade rotors (4) of rotor blades (3) and selective vertical tail pins (1.2). Flow-correcting stators (5) of a stationary vane are arranged in the shape of a star parallel to the rotor plane downstream of the rotor. A protection cover (2.1) of the ducted counter-torque device is covered with a combined structure of an outer corrosion protection surface layer (7.1, 8.1) made of tempered plastic or plastic composite material and at least one following layer (7.2, 8.2) of elastic polymer attenuation material.