Bell unveils EDAT Concept

Bell Helicopter recently revealed a novel electric anti-torque system for its commercial helicopter line. Known as the Electrically Distributed Anti-Torque (EDAT)system, the system is composed of four small fans within a tail rotor shroud in an offset two-by-two pattern. While still in development, Bell claims enhancements to safety and operating cost, as well as a reduction in noise when compared to conventional tail rotor controlled aircraft. Each of the four four-bladed rotors are powered by four separate motors, with the electrical energy provided through generators driven by the turbine engines.

“In a nutshell, we removed all of the conventional mechanical anti-torque components, including gearboxes, drive-shafts