Steering single rotor and twin-roter helcopters – Elenco Aerial Screw User Manual
Page 10
8
Single Rotor
Twin-Roter
Operating the rudder pedals to increase the thrust makes the helicopter turn in
the same direction as the rotor blades. Decreasing the thrust of the tail rotor allows
the reaction of the main rotor to turn the helicopter in the opposite direction.
Some large helicopters have two main rotors that provide extra lift for heavy loads.
No tail rotor is required for this type of helicopter because the two rotors spin in
opposite directions. The reaction of one rotor cancels out the reaction of the other.
To turn, the rudder pedals change the speed of the rotors so that one gets more
power than the other. The reaction of this rotor increases and the extra force turns
the helicopter. Each rotor is mounted at a different height and their rotation is
staggered so that only one blade passes over the helicopter at any one time to prevent
the blades from colliding.
STEERING SINGLE ROTOR AND
TWIN-ROTER HELCOPTERS
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