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Smoothing the collective pitch curve
In the example below, sample reference points have
been set ...
reference point 1 to +50 %,
reference point 2 to +75 % and
reference point 3 to -50 %
... as described in the last section:
Pitch
Cur ve off
Input
+50%
Output
–50%
Point
3
–50%
normal
This "jagged" curve profile can be smoothed auto-
matically simply by pressing a button.
Starting from the situation shown in the previous illus-
tration, disable the Value field by pressing the central
ESC
button of the left-hand four-way button, or the
SET
button of the right-hand four-way button.
Now use the arrow buttons of the left or right-hand
four-way button to move the marker frame up to the
"Curve" line, and press the central
right-hand four-way button once more to activate the
Value field of the "Curve" line:
Pitch
Cur ve
off
Input
+50%
Output
–50%
Point
3
–50%
nor mal
Now use the arrow buttons of the right-hand four-way
button to set the Value field from "off" to "on", and
then briefly press the central
SET
button of the right-
hand four-way button, or the central
left-hand four-way button, to conclude the procedure:
Notes:
•
If the stick does not coincide with the exact refer-
ence point, please note that the percentage value
on the "Output" line always relates to the current
stick position.
•
The figures on these pages show control curves
created only for the purpose of illustration. Please
note, therefore, that the curve characteristics dis-
played do not in any way represent real-life col-
lective pitch curves. A specific application exam-
ple can be found in the programming examples on
page 322.
The following three graphs show typical 3-point pitch
curves for various flight phases, such as hovering,
aerobatics and 3D flight.
The vertical bar depicts the current stick position.
SET
button of the
Please note that trim values greater than +100 % and
less than -100 % cannot be presented in the display.
Sample collective pitch curves for various flight
phases:
+100%
100%
1
2
3
Control travel
Hover
ESC
button of the
Pitch
Cur ve
on
Input
+50%
Output
–50%
Point
3
–50%
normal
+100%
+100%
100%
100%
4
5
1
2
3
4
5
1
2
Control travel
Control travel
Aerobatics
Erasing reference points
To delete one of the reference points (1 to max. 4),
use the stick to move the vertical line into the vici nity
of the reference point in question. As soon as the
reference point number and its associated value is
shown on the "Point" line (see screen image above),
following activation of the value field on the "Point"
line now in inverse video with a simultaneous tap
on the or keys of the right four-way button
(CLEAR) it can be erased. Complete the operation
with a brief tap on the center key
way button.
The "L" and "H" points, on the other hand, CANNOT
be deleted.
C1 Throttle
C1
Thro
Cur ve off
Input
Output
Point
?
nor mal
Unlike the »Channel 1 curve« menu, this display is
only associated with the control curve of the throttle
servo, whereas the the "Channel 1 curve" affects all
servos controlled by the throttle/pitch stick.
Note that the output signal of the "Channel 1
curve" menu thus functions as an input signal for
the throttle curve programmed here: In the graph,
the vertical line is synchronized with the throttle/
collective pitch stick and therefore follows the
current Channel 1 curve characteristic.
The throttle curve can also be defined (separately
3
4
5
per flight phase) by up to 6 points, termed "reference
3D
points", placed at any point along the stick travel.
The reference points are defined, adjusted and
erased in the usual way, as explained in the previous
section on the collective pitch curve. Start by defining
Program description - Helicopter mixer
ESC
of the left four-
(Throttle curve)
+50%
+50%
+50%
191
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