Hasil (
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[Salinan]Disalin!
GeneralA. The APU engine supplies the bleed air for pneumatic power and the shaftpower to turn the APU electrical generator. The APU engine is a gasturbine. The APU engine has a compressor section, turbine section andgearbox section.B. Static air or ram air comes in the compressor plenum. An impellercompresses the air and sends it to the turbine plenum. From the turbineplenum, the compressed air goes into the combustion chamber.C. In the combustion chamber, the air is mixed with fuel. A spark from theigniter plug supplies the ignition of the fuel-air mixture. The gasesfrom combustion flow to the turbine.D. The energy from the combustion causes the turbine wheel to turn and makemechanical power. The mechanical power turns the compressor and the APUelectrical generator. When it is necessary, the turbine plenum suppliesthe bleed air for pneumatic power.
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