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Starting and stopping the turbine
1. Prepare to start by completing the startup checklist.
2. Single Channel Mode start/stop procedure.
a. To start the turbine, place the throttle stick and trim to their minimum positions. Next, move
the trim to its maximum position. Finally, move the throttle stick to its maximum position.
b. When the throttle stick is set to the maximum position, the ECU will begin a fully automatic
starting sequence. This starting sequence can be immediately stopped at any time by
moving the throttle stick and trim to the minimum positions.
c. To stop the turbine after it is running, throttle up just above idle and let it stabilize for a
couple of seconds, then move the throttle stick and throttle trim to their minimum positions.
The auto-cool down mode will start when the turbine has nearly stopped rotating.
3. Two Channel Mode start/stop procedure.
a. Set the throttle stick and trim to their minimum positions and the AUX switch to the Off
position.
b. Move the throttle trim lever to its maximum position.
c. Set the AUX switch to the middle Start/Standby position. The turbine is now ready to start!
d. Advance the throttle stick to its maximum position and the turbine will start.
e. Once the turbine begins to accelerate, the throttle stick can be returned to idle position.
f. When the throttle stick is set to the maximum position, the ECU will begin a fully automatic
starting sequence. This starting sequence can be immediately stopped at any time by
moving the AUX switch to the Off position and/or reducing the throttle stick and trim to the
minimum positions
g. To stop the turbine after it is running, set the AUX switch to the Auto-Off position. The
turbine will increase RPM above idle, stabilize and then shut off. The auto-cool down mode
will start when the turbine has nearly stopped rotating.
4. As soon as the turbine stabilizes at idle speed, the green OK LED will illuminate, indicating that
thrust control is now handed over to the pilot. The throttle stick must be in the idle position for the
green OK LED to illuminate.
After the start process is initiated, the following occurs:
1. After the start signal has been received, the starter motor is shortly activated to give an “acoustical
signal” that the start sequence has been initiated.
2. Now the Kerosene-Igniter is pre-heated for approximately 5 seconds (the starter motor is not
running).
3. Next, the starter motor spools up the turbine to a constant speed and then starting fuel pulses into
the turbine until the combustion chamber rises above 120 degrees C. The yellow Standby LED will
illuminate when the starting motor engages. Should ignition not occur, after a 30-second period of
time, the process is aborted and the green OK LED will blink.
4. Turbine RPM will progressively increase until achieving stable speed. When the turbine speed
surpasses the idle RPM value, the starter motor disengages and the yellow Standby LED goes
out.
5. As the turbine approaches its stabilize RPM, it will briefly dwell, before automatically decelerating
to idle RPM.
6. When the turbine attains idle speed and the throttle stick is placed at idle position, the green OK
LED will illuminate, indicating that thrust control is now handed over to the pilot.
Automatic Cooling Process
After the turbine spins down from Auto Off or Manual Off, the starter motor will spin the turbine rotor at a
slow constant speed until the Exhaust Gas Temperature is below 100 C.
When initiating a start, the LED’s will blink in a continuous sequence of green to red to
yellow. If the throttle stick is above minimum position when initiating a start sequence, the
LED’s will blink in a continuous sequence yellow to red to green indicating an error. Bring
the trim to the maximum position and the throttle stick to the minimum position and this will
correct the error condition.
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