Tail (Tail Rotor Mixer) - Multiplex ROYALpro 7 Manual De Instrucciones

What does the menu show?
Type of Gyro Damping
Control – E
Suppression
a. Type of Gyro
Heading or Damping can be selected.
nd
b. 2 line gain = 0%
If Control appears in this line, the gain is set to
0%. In this case you will see on the right of the
screen the code letter for the transmitter control
which you have assigned to the Gyro function in
the sub-menu Setup , Assignment , Controls
(e.g. Slider E).
nd
c. 2 line gain 0%
- for Damping gyro this means:
Adjustment range +1% to +100%
- for Heading gyro this means:
Adjustment range -100% to +100%
Heading indicator from -100% to -1%
Damping indicator from +1% to +100% .
d. Suppression
Gyro gain can be reduced automatically when con-
trol commands are applied. In the case of model
helicopters this occurs when the Yaw stick is
moved, for fixed-wing model aircraft when the Ai-
leron stick is operated.
Adjustment range OFF to 200%
At the 200% setting, gyro effect is reduced to
0% when the stick is only at half of full travel.
Note:
Many gyro systems feature their own suppression
function. In this case the transmitter's gyro suppression
function should generally be disabled ( Suppression
OFF ). Please refer to the appropriate notes in the
operating instructions supplied with your gyro system.
!
Caution!
Before operating the model helicopter for the first
time, do ensure that the gyro is working correctly,
and is set up to counteract any unwanted yawing
movement. If the gyro is set up incorrectly, it will
amplify the unwanted movement, and the model
will be rendered uncontrollable.

TAIL (tail rotor mixer)

16.2.3.
pro
's TAIL mixer conceals the function
The ROYAL
"static tail rotor compensation", which is also some-
times known as REVO-MIX (revolution mixer). The
TAIL mixer always appears automatically in the main
menu Mixer when you set up a model based on the
model templates HELImech or HELIccpm .
When a helicopter makes the transition from the hover
into a climb or descent, the torque which the tail rotor
has to compensate becomes larger or smaller, with
the result that the helicopter yaws in one direction.
Once set up correctly, the TAIL mixer compensates
for these torque fluctuations, and prevents the model
yawing. It also eases the task of the gyro system, so
that you can set higher gyro gain and thereby obtain
very good tail rotor stabilisation. Four parameters are
required for this.
OFF
Coll. (pitch) + , Coll. (pitch) - , Offset , Zero point
Notes:
It is important to complete all the rotor head settings
(including collective pitch curve) before you set up the
mixer TAIL . The throttle curve must also be adjusted
carefully before you attempt to carry out fine-tuning
with the model in the air. If you subsequently change
the throttle curve, you will normally have to correct the
settings in the TAIL mixer.
If you are using a heading-lock gyro in heading mode,
the TAIL mixer must not be used, and should be
switched off permanently.
Preparation:
You must assign TAIL in the menu ¤Servo.Assign ,
otherwise the mixer TAIL will not appear in the
menu £Mixer .
A two-point calibration is sufficient when setting up
TAIL . Important: take care that the servo is not
stalled (mechanically obstructed) at its end-points
( P1 , P5 ).
a. Basic Offset value
To compensate for the torque at 0° collective pitch
(main rotor), a small tail rotor pitch angle (= Offset )
is required; the value can be set separately in each
flight phase. This will be necessary if you set different
system rotational speeds in the various flight phases.
In the flight phase AUTOROT (Auto-rotation) the Off-
set can be changed so that no tail rotor pitch is pre-
sent at all. This is particularly important if your model
helicopter features a driven tail rotor.
b. Collective pitch to tail (Revo-Mix)
The Collective pitch
the parameters Coll.+ / Coll.- , separately for climb
and descent, and for each flight phase:
Coll.+
Coll.-
The exact values can only be established through a
programme of flight testing, as they vary according to
many parameters.
c. Mixer Zero point
The Zero point is where you set the starting point for
the static tail rotor compensation mixer. The collective
pitch tail rotor mixer takes effect from this collective
pitch angle in the direction of "climb", using the value
set under Coll.+ . In the other direction (descent) the
value set under Coll.- takes effect.
Procedure:
Move the collective pitch stick to the position equating
to 0° collective (use a rotor blade gauge if available).
Note: you should first set up the collective pitch curve
completely.
Manual
tail rotor mixers are set using
correction for climb
correction for descent
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