Model Helicopters - GRAUPNER mx-16 ifs Programming Manual

Model helicopters

The continued development of model helicopters and
helicopter components, such as gyros, speed governors,
rotor blades etc., has led to the current position where
helicopters are capable of sophisticated 3-D aerobatics.
In contrast, if you are a beginner to helicopter fl ying, you
need a simple set-up so that you can quickly get started
on the initial stages of hovering practice, and then
gradually work up to more complex models which exploit
mx
all the options provided by the -16iFS.
mx
The helicopter program of the -16iFS can cope
with all current model helicopters equipped with 1 ... 4
servos for collective pitch control, entirely regardless of
whether they are powered by a fuel-driven or electric
motor.
Each model memory can include two fl ight phases plus
auto-rotation.
Two timers are constantly included in the basic screen
display. At the same time the period which has elapsed
since the last charge process is also displayed.
40 Model helicopters
You can return to the correct idle position for the digital
Ch 1 trim simply by pressing a button.
"Dual Rate" and "Exponential" are available for roll,
pitch-axis and tail rotor; they can be coupled together,
and programmed to provide two settings.
All the transmitter controls (CTRL) and switches (SW)
can be assigned to inputs 5 ... 8 in virtually any order.
This is carried out in the »contr set.« menu.
In addition to three linear mixers, which can be assigned
to any functions and can also be switched on and off,
the »heli mixer« menu provides fi ve-point curves for
the collective pitch, throttle and tail rotor mixers, variable
separately for each fl ight phase; these provide non-
linear mixer characteristics.
1. Collective pitch
2. C1 throttle
3. C1 tail rotor
Such advanced features are not needed by the begin-
Channel 1 Throttle
ner, who will initially simply set the hover point to coin-
cide with the centre point of the stick arc, and adjust the
collective pitch travel as required.
Moreover the »heli mixer« menu offers two additional
set-up options in the lines "Gyro" and "I8".
The mixer inputs for collective pitch, roll and pitch-axis
can then be adjusted in the »swashp.mix« menu.
The throttle limit function in the »contr set.« menu
provides an effective means of starting the motor in any
fl ight phase. By default the proportional rotary control
CTRL 7 is assigned to this input, and this control func-
tion determines the maximum throttle servo position,
i. e. the trim lever controls the motor over the idle range.
Only when the rotary knob is turned in the direction
of full-throttle do the programmed throttle curves take
effect. If you have set up the two timers, they also start
recording the fl ight time automatically at this pint. See
page 52 for more information on this.
Collective
Pitch Curve
i