186 Detail program description - Helicopter mixer
Swashplate limiter
SEL
0%
Nick
Tail rot.
0%
Gyro suppression
0%
Swashplate rotation
0°
Swashplate limiter
off
Gyro offset
Normal
This function works like a circular mechanical
surround acting upon the stick which controls the
swashplate, restricting the normally square stick
travel to a circular range. In fact, if the helicopter is
set up in such a way that the defl ections for roll and/
or pitch-axis exploit the maximum travel mechanically
possible, e.g. for 3D helicopters, then the total tilt
applied to the swashplate if full roll and pitch-axis
commands are applied simultaneously will be
considerably greater (141 % in numerical terms). The
swashplate mechanism may then strike its end-stops
and, in the worst case, the ball-links could even be
disengaged.
The
mc-20 HoTT
transmitter contains a
confi gurable 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 effective limit). In addition,
the function can be set to "Off" and hence completely
deactivated. The swash limiter can also be confi gured
per model and per fl ight phase.
This software solution is therefore much more fl exible
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.
The adjacent sketch illustrates the effect for a 100 %
setting. the cross-hatched area of travel is curtailed
and appears as a "dead zone".
If this function is used, "Dual Rate" should be set to
100 % and Dual Rate values above 100 % should also
not be used. If not, and you set a swashplate limit of
100 %, for example, then swashplate movement will
be restricted even if roll and pitch-axis commands are
given separately.
Setting range: 100 … 149 % and "off".
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