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Connection diagram for the Airspeed Sensor:
Connect the air lines from the pitot tube to the airspeed sensor, using the 1/16
th
inch ID vinyl
tubing provided.
1 = Dynamic pressure input
2 = Static pressure input
Note:
Tubing length and/or cross sectional area has no influence on measurement precision
Connect the
Airspeed Sensor
cable to the appropriate socket, where indicated on the ECU
(see: engine diagram in the Operation Manual). The orange wire is aligned to the pulse
symbol. Once the
Airspeed Sensor
is connected, the ECU controls additional functions:
•
under the
Run
menu
,
measurement of current air speed (“
Airspeed
”) and desired flight
speed (“
SetSpeed
”), can be displayed
•
under the
Min/Max
menu, the measured maximum speed (“
MaxAirSpd
”) and the average
flight speed (“
AvgAirSpd
”), can be displayed
•
under the
Limits
menu, speed limits and the parameters of speed regulation can be
predetermined
Limits
menu parameters assigned to the
Airspeed Sensor
:
Parameter
Explanation
MAX
LIMITAIRSPD
Maximum allowed flight speed of the model, in km/h. If this speed is
achieved, turbine thrust is automatically reduced – to keep the model from
exceeding the maximum limit. This safety option is always active, despite
the position of the
AUX
switch.
Max.AirSpeed
Maximum flight speed value, in km/h, for the
Cruise Control
mode. This
value corresponds to the speed at the maximum throttle stick position.
Min.AirSpeed
Minimum flight speed value, in km/h, for the
Cruise Control
mode. This
value corresponds to the speed at the minimum throttle stick position.
SpeedRegVal-I
Regulator speed, which sets the reaction time of the PID servo loop –
much like a sensitivity control in a gyroscope system.
Default value = 18
Increase this value, to increase reaction sensitivity.
SpeedRegVal-P
Regulator coefficient (proportional)
Default > 500
Under normal circumstances, does not require alteration.
SpeedRegVal-D
Regulator coefficient (differential)
Default = 50
Under normal circumstances, does not require alteration.
Airspeed
Sensor
D y n a m ic p re s s u r e
S ta tic p r e s s u r e
P ito t tu b e
1
1
2
2
flig h t d i r e c t i o n
E C U c o n n e c tio n c a b l e
