Quote:
Originally Posted by UFOGUY
Hey all, what maintains a constant voltage output from the engine generators and the apu generator? The systems book doesn't explain specifically. Is there a drive or guide vanes on the APU? I thought I knew this answer...
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GCU's, or generator control units, ie, voltage regulators.
The generator drive on the APU is direct, as the gen is also the starter. There are guide vanes on the APU but they are fixed, not variable.