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3.6.  ANTITORQUE ROTOR

Figure 3.4 shows the direction of travel for a main rotor, the direction of torque for the fuselage, and the location of an antitorque (tail) rotor.

Figure 3.4.  Tail Rotor Thrust to Compensate for Torque.
Figure 3.4. Tail Rotor Thrust to Compensate for Torque.

An antitorque rotor located on the end of a tail boom extension provides compensation for torque in the single-main-rotor helicopter. The tail rotor, driven by the engine at a constant speed, produces thrust in a horizontal plane opposite to the torque reaction developed by the main rotor.


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Last Updated: January 10, 2009