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Explanation of the Turbine States
Table 1
AUX switch in the Off position and/or the throttle trim in the Off position. All
LEDs are off.
Turbine is off (preventing starting).
AUX switch positioned to the Start / Standby position, throttle trim at
maximum and throttle stick at idle. The LED chase sequence is started from
green to red to yellow, continuously. When throttle stick is advanced to the
maximum position, the starter motor engages to spin the rotor. When RPM
reaches a pre-programmed value, the starter motor’s voltage is removed and
the turbine is ready to ignite.
The burner is pre-heated for 3-7 seconds (the starter motor is not running)
The starter motor spools up the engine to it’s ignition. After another few seconds the
ignition of the engine is engaged by injecting kerosene into the Kerosene-Igniter. The
pump and the internal starting fuel solenoid will begin pulsing.
Main fuel solenoid opens and kerosene is modulated into the engine.
Delay while combustion chamber is preheating. Waiting for a rise in EGT.
Starting fuel solenoid closes and all the fuel is now directed to the main injectors. The
red Pump running LED turns on and will stay illuminated as long as the pump
operates.
Turbine successfully accelerates to the idle RPM, then automatically increases speed
to about 30% higher RPM. When this speed is maintained consistently for at least one
second, the turbine will proceed to the next state (Learn LO).
In this state, the turbine automatically decreases RPM to the idle speed.
As soon as idle speed is attained, with the throttle stick in the idle position, the turbine
will proceed to the next state (RUN (reg.)).
Turbine in the normal running state; the throttle stick will regulate turbine thrust.
During this operant condition, the green OK LED will illuminate, indicating that pilot has
control. (red LED is already illuminated)
RUN (regulated) continues, until the turbine is switched off.
The AUX switch placed in the Auto Off position.
Turbine automatically increases RPM if at idle and remains at that RPM for a few
seconds, before transition to the next state (Slow Down).
During this state, the fuel shut-off valve is closed and the fuel pump is stopped.
The green OK LED blinks and the GSU displays !-Cooling-!, indicating Slow Down
This condition will continue, until all of the following parameters are met:
Turbine speed less than 800 RPM
EGT is less that 100 degrees C.
The AUX switch is moved to the Off position and throttle trim is moved to the
minimum position
Once these conditions are met, turbine proceeds to Off.
Speed Control mode -- only active when the air speed sensor is connected. Regulates
model flight speed.
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