Turbine States; Explanation Of Turbine States - GRAUPNER JetCat P60 Instructions D'utilisation

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Turbine states

The turbine passes through several different states as it progresses from the start-up phase (-> ignition) to
normal running (-> thrust control transferred to the pilot).
The transition from one state to the next involves what are known as transitional states.
The current turbine state is displayed in the Run menu under "STATE".

Explanation of turbine states

Table 1
Value Explanation
-OFF- AUX switch at position 0 (= OFF), or throttle trim is at OFF -> turbine shut down, turbine
cannot be started.
In this state all LEDs are switched off.
Stby/START AUX switch at centre position, -> turbine is ready for starting, and is started. In this state
the yellow "Standby" LED lights up to indicate that the turbine is to be spun up. As soon
as the measured turbine speed is high enough, the process moves to the next state:
"Ignite".
Ignite... In this state the glowplug is switched on, and the propane valve is opened. The Jet-tronic
now waits until ignition has occurred.
The Jet-tronic remains in this state until at least one of the following conditions is fulfilled:
a) The measured exhaust gas temperature exceeds about 120°C
b) The measured exhaust gas temperature rises at a rate exceeding 25°C/sec
c) The measured rotational speed of the turbine exceeds 10,000 rpm
If one of these three conditions is fulfilled, the process moves to the next stage
(AccelrDly).
The ignition attempt is halted, and the process moves to the "Slow-down" state if the
following condition is fulfilled:
a) The turbine has not ignited within about 30 seconds.
In the "Ignite" state the yellow "Standby" LED always lights up when the turbine is to be
spun up.
The red "Ignition" LED on the GSU / LED board indicates that the glowplug is switched
on.
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