Exhaust, Acc., Rev, Supr, AB
Where do pneumatic t/r's get their air?
Compressor bleed
A super sonic exhaust nozzle at Mach or above
divergent
Min. braking requirement of t/r's
50%
Panel used to arm and discharge an APU fire bottle is found where?
Cockpit and on-ground, both
What must be open in order for an APU to start?
APU air inlet
Using t/r's at low speeds can cause?
foreign object ingestion
hot gas re-ingestion
compressor stalls
A super sonic exhaust nozzle at take-off
convergent
Roller Bearings are used to support?
Radial Loads
What should you do before starting the APU?
Fire Warning/Squib check
In an emergency the GTC can be used to power the DC emergency bus. T/F
False
Cascade Vanes used for?
steering thrust forward
A super sonic exhaust nozzle during sub sonic flight
convergent
What is he function of the APU air inlet plenum?
Stable air source to compressor
APU or GTC uses what kind of engine?
turboshaft engine
Usually , most of the load placed on an APU occurs when?
Pneumatic operations
(Bleed Valve open)
ITT is used to identify
Interstage Turbine Temperature
Section of the engine used to power generators, oil pumps and hydraulic pumps?
Accessory Section
What does GTC identify?
Gas Turbine Compressor
APU load compressor's primary purpose?
Control pneumatic air load demand
A constant speed drive (CSD) is required to keep the APU generator at a constant 400 hz, due to the widely varying speed of the APU. T/F
False
Best indicator of thrust during power changes
EPR
Engine Pressure Ratio
Types of reversers found on turbine powered acft?
aerodynamic blockage
mechanical blockage
Two types of jet nozzles?
Convergent
Convergent-Divergent
(variable geometry)
Used in modern acft to monitor and control the APU?
Electronic Control Unit (ECU)
What does APU identify
Auxiliary Power Unit