FUTABA 8UHPS Instruction Manual page 77

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 (LIN, for linear) by moving the throttle stick, or you may choose to move
all the controls to the defined positions by flipping switch C. (You can disable the airbrake
mixing with Switch C during LIN mixing.) 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
t rim when the ailerons rise.
Setting up Airbrake function
1. Turn the ABRAKE function ON by pressing the
(+) key ("ON" displayed ). Turn off (INH) the
function with the (-) key.
Servo travel
Channel whose
Range: -100 to
throw is being
+100%
set:
Initial values:
AIL = Aileron
AIL, FLP=+50%
(shown)
Elevator = -20%
FLP = Flap
ELE = Elevator
Elevator delay value
Range: 0 - 100%
Initial setting = 0%
Switch type display
MANU = Controlled by manuallly-actuated switch
LIN = Controlled linearly by throttle stick
To ELE-FL function
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.
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%.
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.
74
These keys are used to move through the
seven submenus in the ABRAKE function.
To AI-DIF function
Set Throttle position
(a throttle on/off position must be set if
you use the linear (LIN) airbrake mode).
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.
Data input keys