AUXILIARY POWER
UNIT (APU)
GENERAL
The APU (Figure 6-1) is mounted on a skid
support assembly enclosed in a fireproof metal
container in the aft equipment bay.
MAJOR SECTIONS
The APU (Figure 6-2) can be divided into six
major sections as follows:
1. Air intake
2. Compressor
3. Combustor
4. Turbine
5. Exhaust
6. Accessory Gear
Air Intake
The main air inlet to the compressor is located
around the waist of the APU. The air intake is
shrouded and connected by a rectangular duct
to a flush screened inlet (figure 6-3) at the top
of the rear fuselage compartment.
Compressor
The compressor is a single-stage centrifugal
type, which induces air through the intake,
compresses the air, and directs the airflow for
cooling, combustion, and bleed air extraction.
FlightSafety Canada
L t é e
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CL-600-2B16 PILOT TRAINING MANUAL
6-2
CL 601-3A/R
FOR TRAINING PURPOSES ONLY
Figure 6-1. APU Installation