Futaba 8UHFS, 8UHPS - Manual (Page 51)

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The ABRAKE function simultaneously drops the flaps and moves the elevator, and may
be used to make steep descents or limit airspeed in dives. Airbrakes can be activated in a
proportional manner by moving the throttle stick, or you may choose to move all the controls
to the defined positions by flipping switch C. If you choose to operate it by throttle stick
motion, you’ll need to set the stick position for it to be activated. You can suppress sudden
changes in your model’s attitude when airbrake is activated by setting the delay ("DLY") item,
which slows down the elevator response.
When the FLPRON function has been selected, the travel of the ailerons when the
airbrake is operated can be independently adjusted for the servos plugged into CH1 and CH6.
When AI-DIFF function is used, the travel for CH1 and CH7 may be adjusted. Normally
both ailerons are raised in the airbrake mode, and the elevator motion is selected to maintain
rim when the ailerons rise. t
Setting up Airbrake function
To ELE-FL function
To AI-DIF function Data input keys
These keys are used to move through the
seven submenus in the ABRAKE function.
1. Turn the ABRAKE function ON by pressing the
(+) key ("ON" displayed ). Turn off (INH) the
function with the (-) key.
Servo travel
Range: -100 to
+100%
Initial values:
AIL, FLP=+50%
Elevator = -20%
2. Set Aileron travel setting
Input the travel you'd like with
the (+)/(-) keys.
3. Set Flap travel
Input travel with the (+)/(-)
keys.
4. Set Elevator travel
Input travel with the (+)/(-)
keys.
• Press the (+)/(-) keys
simultaneously to return to the
initial value for the control.
Channel whose
throw is being
set:
AIL = Aileron
(shown)
FLP = Flap
ELE = Elevator
Elevator delay value
Range: 0 - 100%
Initial setting = 0%
5. Set Elevator delay rate
• Adjust the elevator delay
with the (+)/(-) keys.
• A 100% delay produces full
elevator throw in about one
second
• Press the (+)/(-) keys
simultaneously to return to
0%.
Switch type display
MANU = Controlled by manuallly-actuated switch
LIN = Controlled linearly by throttle stick
6) Airbrake control selection
Select the control whose
motion you want to use to turn
the airbrake mixing on and off
with the (+)/(-) keys.
If you choose MANU,you'll
need to continue as shown to
the right.
Throttle position
Range: 0 - 100%
Initial value: 0%
7. Enter Throttle position
The throttle position you set becomes the
starting point for air brake operation. The
servo motions increase linearly when the
throttle stick passes this position.
Move the throttle stick to the desired
airbrake on/off position. Enter the
position into memory by pressing the
(+)/(-) keys simultaneously.
You can disable the airbrake mixing with
Switch C during LIN mixing.
Set Throttle position
(a throttle on/off position must be set if
you use the linear (LIN) airbrake mode).