SystemsHelicopter Anti-Torque Systems September 3, 2013January 26, 2021 - Leave a Comment Tail rotor, Fenestron or NOTAR- they are all ways to counter the torque of a helicopter main rotor.Learn more by watching the VIDEO below on Helicopter Anti-Torque Systems:Anti-Torque Systems VideoShare this page:PrintEmailTwitterFacebookLinkedInRedditWhatsAppPinterest