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The canards
The canards must be accurately aligned with each other, and with the root fairings moulded into the
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fuselage.
The canards are mixed into the elevator channel using a free mixer or curve mixer.
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The leading edge of the canards should be raised by 16 mm at full up-elevator travel (Fig. 46a).
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The leading edge of the canards should be lowered by 8 mm at full down-elevator travel (Fig. 46b).
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The mixer must be permanently programmed, i.e. not switchable.
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The thrust vectoring pipe:
Fig. 47 shows the zero / neutral position of the thrust pipe.
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Lay a strip of wood on the fuselage turtle deck: it should be positioned 10 mm from the thrust pipe. This
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is the base value, which may vary.
The thrust vectoring pipe is also mixed in to the elevator using a free mixer. We recommend that you
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assign a switch to the mixer, so that you can operate the thrust vectoring pipe when you wish to. You will
probably start by using it for taking off from grass and for 3-D flying; later you may wish to leave it
switched on permanently.
To amplify the up-elevator effect, the thrust vectoring pipe is angled upward.
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To amplify the down-elevator effect, the thrust vectoring pipe is angled downward (only required for 3-
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D flying).
The maximum travel up and down is limited by the turbine's thrust nozzle. When setting up the servo
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travels it is essential to ensure that the thrust vectoring pipe cannot contact the turbine's thrust nozzle, as
this could cause electrical "noise" and radio interference. On our models the thrust vectoring pipe is
actuated and mixed using the following method:
Assign the thrust vectoring servo to a slider channel, and set the maximum possible movement of the pipe
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up and down by adjusting servo travel at the transmitter.
The trim of the thrust vectoring pipe can now be fine-tuned by adjusting the centre / neutral position of the
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servo via the slider on the transmitter.
Set up a curve mixer and assign it to a toggle switch, and mix the travel of the thrust vectoring pipe
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proportionally with up- and down-elevator commands. The advantage of using a curve mixer is that it
enables you to adjust the mixer ratio of the thrust pipe function independently, including exponential,
simply by offsetting the curve; this makes the model even more agile and manoeuvrable.
The zero / neutral position of the thrust vectoring pipe is shown in Fig. 47.
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Lay a strip of wood on the fuselage turtle deck: it should be positioned 10 mm from the thrust pipe. This is
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the base value, which may vary.
The advantage of thrust vectoring control is that it improves the model's general agility and
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manoeuvrability, although its primary advantage is that the take-off run can be shorter. Please note that
using the thrust vectoring system in flight does call for care and practice, and we recommend that you start
slowly and "feel your way forward" with the response of the system, i.e. start by setting small travels and a
linear mixer curve.
Test-flying the model
The basic requirement for a successful first flight is that you have built the model in accordance with the
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building instructions, and set it up exactly as prescribed.
Before you test-fly the model, check that there is no lost motion in any of the control surface linkages, and
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secure all screwed joints and locknuts with UHU schraubensicher (thread-lock fluid), Order No. 952.
Check that the retractable undercarriage operates with 100% reliability, that it locks every time when
extended, and that the turbine and all its ancillary equipment work flawlessly. Check that all the control
surface travels and the model's CG are set as stated in these instructions. Carry out a careful and thorough
range check, with and without the turbine running.
Ensure that all the airborne components are properly secured, so that the high forces and acceleration which
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occur in flight cannot possibly loosen them and allow them to move about. Ascertain that your model's
Centre of Gravity is actually located at the manufacturer's stated position: 125 - 130 mm forward of the
front face of the wing joiner tube. Do the control surfaces work in the correct "sense" relative to the
transmitter stick movements? Are all the batteries for the receiving system and turbine electronics
fullycharged? Have you installed the receiver aerial correctly?
GRAUPNER GmbH & Co. KG D-73230 KIRCHHEIM/TECK GERMANY
Änderungen vorbehalten! Keine Haftung für Druckfehler! Ident-Nr. 0057999
04/2003
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Made in Thailand
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