GRAUPNER MC-32 Manual page 200

headwind. Depending on the state of the weather
and the flight program planned, you can also switch
over the gyro gain from the transmitter – also with
gyro suppression dependent on tail rotor deflection if
required.
Gyro offset
Important notice:
The value of this option is identical
to the offset value set in the "Gyr7"
line of the »Control adjust« menu,
page 126. For this reason, any changes
made always affect the other menu directly
– and vice versa.
Most of the latest gyro systems not only feature infi-
nitely variable proportional gyro gain setting, but also
offer a choice of two separate types of gain mode on
the transmitter.
If the gyro in use has at least one of these features
then this alternative offset setting provides an op-
portunity to preset both "normal" gyro gain as well
as, as appropriate, to specify a "heading-lock mode"
whereby, even within this pre-selection, gyro gain can
be reduced by a particular gain type for normal, slow
flight with maximum flight stabilization, fast circuit
flights and aerobatics.
To proceed as described above, use flight phase
switching to enter different settings on the "Gyro
offset" line. Values between -125 % and +125 % are
possible:
200 Program description - Helicopter mixer
Roll Tail rot.
Nick Throttle
Nick Tail rot.
Gyro suppression
Gyro offset
Normal
Based on these flight-phase specific (offset) settings,
gyro gain can also be infinitely varied by a transmitter
control assigned in the "Gyr7" line of the »Control
adjust« menu, page 126.
Swashplate rotation
Nick Throttle
Nick Tail rot.
Gyro suppression
Gyro offset
Swashplate rotation
Normal
Some rotor head control systems make it necessary
to incline the swashplate in a different direction from
the intended inclination of the rotor plane when a
cyclic control command is given. If your model fea-
tures a four-bladed main rotor, for example, you may
need to use this menu to set up a software-driven 45°
rotation of the control linkage to the right, so that the
pushrods from the swashplate to the rotor head can
be set exactly vertical, ensuring that the blade control
system works correctly, without unwanted differential
effects. This eliminates the need to make mechani-
cal changes to the control linkages. Negative angles
equate to a virtual rotation of the rotor head to the
left; positive angles a virtual rotation to the right.
Swashplate limiter
0%
0%
Nick
0%
Gyro suppression
0%
Gyro offset
0%
Swashplate rotation
SEL
Swashplate limiter
This function works like a circular mechanical sur-
round acting upon the stick which controls the swash-
plate, restricting the normally square stick travel to
a circular range. In fact, if the helicopter is set up in
such a way that the deflections for roll and/or pitch-
axis exploit the maximum travel mechanically pos-
0%
sible, e. g. for 3D helicopters, then the total tilt applied
0%
to the swashplate if full roll and pitch-axis commands
0%
are applied simultaneously will be considerably
0%
greater (141 % in numerical terms). The swashplate
0° mechanism may then strike its end-stops and, in the
worst case, the ball-links could even be disengaged.
SEL
The mc-32 HoTT transmitter contains a configur-
able software function for limiting the total swashplate
travel, i. e. it restricts the tilt angle of the swashplate
from 100 % (the travel is limited to the value obtainable
either with roll or pitch-axis alone) to 149 % (no effec-
tive limit). In addition, the function can be set to "Off"
and hence completely deactivated. The swash limiter
can also be configured per model and per flight phase.
This software solution is therefore much more flexible
than a physical circular surround attached to the stick
unit: the latter can, in any case, only be used if the roll
and pitch-axis functions are controlled by a common
stick unit.
Tail rot. 0%
0%
0%
0°
off
Normal SEL