User manual

37
f) Basic information on controlling model helicopters
Beforeyingthemodel,familiariseyourselfwiththecontrolfunctionstoensurethatyoucancontrolthemodelsafely.
The model helicopter is controlled using the two levers on the remote control. These have the following functions:
Altitude function
Thealtitudefunctionenablesyoutocontrolthealtitudeofthehelicopter(seegure9).Tochangethealtitude,move
theleft-handlever(seegure1,position8)upordownfromtheneutralposition.Astheanglesofattackcannotbe
changed, the altitude is changed by adjusting the speed of both rotors.
When the lever is in the neutral position, the helicopter hovers at a constant altitude. When the lever is moved up-
wards, the speed of the rotors increases, which makes the helicopter rise. When the lever is moved downwards, the
speed of the rotors drops and the helicopter's altitude decreases.
Figure 9
Tail function
The helicopter is equipped with two counter-rotating rotors, therefore there is no torque around the vertical axis (rotor
shaft). As a result, the helicopter does not require a functional tail rotor for lateral stabilisation. Each main rotor rotates
at a slightly different speed to allow the model to rotate around the vertical axis (rotor shaft). Depending on which rotor
rotatesfaster,themodelturnstotheleftorright(seegure10).
Theright-handlever(seegure1,position4)isusedtocontrolthetailfunction.Whentheleverismovedtotheleft,
the front of the fuselage turns to the left. When the lever is moved to the right, the front of the fuselage turns to the
right.
Figure 10