Differential Mixer; Combi-Mix - GRAUPNER mc-16 Programming Manual

FLAP FLAPERON
MIXER
Flap Flaperon Mixer
(access via Set-Up Menu)
The mixer "F-A" allows an adjustable portion of the
flap control system to be fed to the aileron channels
(2 and 5) so that the ailerons move with flap
deflection in a manner like the flaps, but normally
with smaller movement. The advantage is that a
more even lift distribution over the span can be
achieved. The mix proportion is entered using the
and buttons, between 0 and ±125%.
INC DEC
In order to tell the mixer, in which position of the
control for the flaps relates to the normal flight
position, is pressed to call up the offset
CH SEL
value. The value is set by moving the control to the
required position and pressing the
The offset, the deviation from the control central
position, is indicated in the display. You can also first
set the offset and then adjust the mix proportion.
46 Fixed Wing Models

COMBI-MIX

Aileron Rudder Mixer
(access via Set-Up Menu)
In the case of operating the ailerons, the rudder is
deflected by a programmable mix proportion. The
rudder can, however, be steered separately at any
time with priority.
After call of the code "A-R", the mix proportion is
adjusted using the
to automatically at the maximum value of ±125%.
The combi mixer can also be disabled by an external
switch attached to socket 3 on the transmitter board.
button.
CLEAR
/ buttons and is stopped
INC DEC
DIFFERENTIAL
MIXER
Aileron Differential Mixer
(access via Set-Up Menu)
The aileron differential is used to adjust for an
unwanted yaw effect, which is called "negative yaw":
The aileron deflecting downward creates a larger
drag resistance than that developed by the upward
deflecting aileron. This results in a torque around the
vertical axis against the intended turn direction. This
effect arises naturally and is more obvious with
gliders with high aspect ratio wings, than with normal
power planes, .due to the increased moment arm
that the aileron drag has.
The aileron differential causes the downward aileron
to deflect by a smaller distance than the upward
moving aileron. The drag forces can be balanced
and therefore the negative turning moment removed.
Using the / buttons, the aileron differential
INC DEC
is adjusted between the limits 0 and 100%:
0% = Normal, thus no differential.
100% = No downward aileron deflection,
Split position mentioned above.
An external switch attached to connection 6, allows
selection between two differential values. These are
displayed as "DIF" and "dif" depending on the
position of the switch. Each can have a different
value to suit differing flight modes.