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Robbe Futaba FF-10 Manual

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87
BUTTERFLY
(crow) mixing (
GLID
):
BUTTERFLY
(often called "crow"- see
GLID
, p. 80 for details) simultaneously moves the fl ap, twin ailerons and elevator,
and is usually used to make steep descents or to limit increases in airspeed in dives. Separate two
BUTTERFLY
settings are
available. (
CIR1
/
CIR2
)
Adjustability:
• Activation: Proportional by moving the THROTTLE STICK.
• Switch: Mix SWITCH is selectable.
A
to
H
: SWITCH A to H
NULL
: always on.
Also LOGIC SW (Lsw1 to 3) may be assigned. Set up
LOGIC SW
: See p. 38.
• Inversely proportional to THROTTLE STICK: provides a proportional increase in amount of airbrake action as
THROTTLE STICK is lowered (when SWITCH A (assignable) is in down position). Includes selectable stick position
where airbrake begins. If you would like to have the airbrake be directly proportional to throttle stick, you will need
to reverse the THR-REV function. Note that this changes the throttle stick direction for all models. See page 38 for
instructions.
• Elevator settings: (adjustable in the
B.FLY-ELE
)
B.FLY-ELE
works linking with
BUTTERFLY
function. Elevator rate is adjustable in a
3 point curve.
Point 1:
PRESET
point. (Fixed)
Point 2:
MID
point. Position and rate are adjustable.
Point 3:
END
point. Position and rate are adjustable.
• Delayed reaction: You can suppress sudden changes in your model's attitude when
BUTTERFLY
is activated by setting the
delay (
DELAY
) item, to slow down the elevator response, allowing the fl aps/ailerons/elevator to all reach their desired end
point together. A setting of
100%
slows the servo to take approximately one second to travel the prescribed distance.
• Channels controlled: Twin ailerons, fl ap and spoiler may be set independently in
BUTTERFLY
, including set to
0
to have no
effect.
• Twin aileron servos: If
AIL-DIFF
function is inhibited, then
AIL1
and
AIL2
settings will have no ef
fect.
• If
AIL-DIFF
is active, then CH1 and CH7 may be independently adjusted.
• Normally both ailerons are raised equally in
BUTTERFLY
, and the elevator motion is set to maintain trim when the ailerons
rise. Different amounts may be set for each aileron to correct for torque reactions and other unique characteristics of the
model.
Be sure you understand what dropping ailerons will do when in
BUTTERFLY
. Along with creating an enormous amount
of drag (desireble for spot landings), this also creates "wash-in", a higher angle of attack where the ailerons are, and
encourages tip stalling. If you are using this for aerobatic performance and not "sudden stops", consider raising the
ailerons and dropping the fl aps instead as shown in the diagram above.
… 87 …


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