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e) Basic Information Relevant to the Control of Model Helicopters
Caution, important!
Before starting to fly your model helicopter, you should take note of the following information first.
Before operating your model, you should know the available control possibilities first in order to be able to safely
control the model. The double rotor model helicopter is controlled via the two control sticks at the remote control
transmitter.
The following functions are available (observe the figures on the next page):
Pitch Function
With the Pitch function you can control the flying height of the helicopter (see figure 8, item A). The control is effected
with the left control stick (see figure 1, item 12). To that effect, the control lever can be moved forward and backward.
Unlike with other control functions, the lever does not keep springing back to the centre position. As the angles of
attack of the rotor blades are not modifiable, setting the flying height is effected via a common speed modification of
the two rotors. Pulling the control stick towards you switches off the motors and the rotors stop. If you push the control
stick forward, the rotors run and increase the speed according to the position of the stick. When the control stick
reaches the centre position, the helicopter should hover.
Tail Function
As the helicopter is equipped with two counter-rotating rotors, there is no torque around the yaw axis (rotor shaft). The
helicopter does not need a functional tail rotor for stabilization. To allow the model to turn around the yaw axis (rotor
shaft), the two main rotors run with slightly different speeds and the model begins to turn (see figure 8, item B). The
control of the tail function is effected with the left control stick as well (see figure 1, item 12). If the stick is steered
slightly towards the left, the tip of the fuselage turns towards the left. If you steer towards the right, the tip of the
fuselage turns likewise towards the right.
Roll Function
The roll function allows you to move your model helicopter sideways to the right and to the left (see figure 8, item C).
The control is effected with the right control stick (see figure 1, item 2). If the stick is steered slightly towards the left, the
model drifts sideways to the left. If you steer to the right, the model drifts sideways to the right.
Nod Function
The nod function allows you to move your model helicopter forward and backward (see figure 8, item D). The control
is likewise effected with the right control stick (see figure 1, item 2). If you press the stick slightly forward, the model
flies forward. If you pull the stick towards the back, the model flies backwards.