138
Programming example: deltas and fl ying wing model aircraft
On page 120, where the section on fi xed-wing mo-
del programming starts, you will fi nd general notes re-
garding the installation and set-up of the RC system
in a model, and – of course – this also applies to del-
tas and fl ying wings. The information on test-fl ying
and refi ning the settings is also relevant, including the
section on programming fl ight phases.
Even at fi rst sight, deltas and fl ying wings differ very
obviously from “normal” models in their characteris-
tic shape and geometry, but the differences in the ser-
vo arrangements required are rather more subtle. The
“classic” model delta or fl ying wing generally has only
two control surfaces, which act both as ailerons (in
opposite directions) and as elevators (in the same di-
rection), in a similar way to the superimposed rudder /
elevator functions of a V-tail.
Modern designs tend to be more complex than this:
one (or two) inboard control surfaces may be used
purely as elevators, while the outboard ailerons also
act as elevators, but to a reduced extent. If a fl ying
wing has four or even six wing control surfaces, it is
certainly feasible nowadays to set them up with cam-
ber-changing fl ap functions and / or even a butterfl y
(crow) system.
However, most of these models still rank as “clas-
sic” deltas and fl ying wings, and for them the servos
should be connected to the receiver as follows (see
also page 35):
In accordance with this servo sequence we move to
the menu …
»Model type« (page 52)
M O D E L T Y P E
M o t o r N o n e
T a i l t y p e D e l t / f l . w i n g
A i l e r o n / c a m
b e r f l a p s 2 A I L 2 F L
B r a k e O f f s e t + 1 0 0 % E n t e r 1
S E L
t
s
and select the “Delta / fl ying wing” type in the “tail”
line; at this point the “Ailerons / fl aps” line below it au-
tomatically displays “2 AIL”.
These settings primarily affect the list of available mi-
xers, because elevator and ailerons are automatical-
ly mixed together by the software when the “Delta /
fl ying wing” tail type is selected. At the transmitter
you can adjust the control travel of the elevator and
aileron stick in the »Dual Rate / Exponential« menu
(see page 64).
Note:
If your model features more than just these two con-
trol surfaces, then you should skip this section and
continue reading in the right-hand column, under del-
ta / fl ying wing designs of “modern” layout.
Certain settings in the »Wing mixers« menu (see
page 84) may be useful with the “Aileron 2 4 rud-
der” mixer, and you may even wish to experiment with
7
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1
8/Batt.
izer-MICRO-SUPERHET
1 6
FM
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s 35MHz/35MHz-B-Band
Made in Malaysia
S C A N
! #
Receiver battery
Y-lead, Order No. 3936.11 or 3936.32
Auxiliary function
Auxiliary function
Auxiliary function
Auxiliary function (or right rudder)
Rudder (or left rudder)
Right elevon (aileron / elevator) servo
Left elevon (aileron / elevator) servo
Airbrakes or throttle or speed controller
(electric motor)
low differential values if you are very sensitive to the
nuances of fl ying characteristics.
A i l e r o n d i f f e r e n c e + 0 %
A i l e r o n s 2 > 4 R u d d e r + 0 %
B r a k e > 3 E l e v a t o r + 0 %
R e d u c t i o n o f d i f f .
+ 0 %
« n o r m a l »
S E L
t
Settings beyond those described can result in unwan-
ted moments which it may be impossible to correct,
due to the specifi c characteristics of this type of mo-
del.
In contrast, delta and fl ying wing designs featuring
more than two wing fl aps can sometimes cope with
these moments. For example, the “ballooning” mo-
ment (= up-elevator effect), caused by defl ecting both
ailerons up, can be corrected by lowering the fl aps (=
down-elevator effect) to the requisite degree.
If your delta or fl ying wing is of this more “modern”
confi guration, the “normal” servo sequence has pro-
ved to be useful:
The fi rst step here is to move to the menu ...
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2
1
8/Batt.
izer-MICRO-SUPERHET
1 6
FM
Best.-Nr.
7052
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