DCC Type Course (APU)

What is the purpose of the Auxiliary Power Unit (APU) on AH64D?

• Provide hydraulic and air supply to aircraft

• Provide aircraft with self-supporting capability by eliminating the need for external power sources

• Provide hydraulic and electrical supply to aircraft

• Eliminate the need for external power sources

Where is the location of APU?

• Right side of aft equipment bay, aft of main rotor support structure

• Left side of aft equipment bay, aft of main rotor support structure

• Right side of engine deck

• Left side of engine deck

How many mounting points are used to mount APU to the aft equipment bay?

• 1

• 3

• 5

• 7

What are the purposes of the power section of APU? Provides power to drive the ___ section and supplies bleed air for the IPAS

• accessory

• turbine

• compressor

• electrical

What is the inlet plenum of APU made of?

• Aluminium

• Laminates

• Lightweight Fiberglass

• Fiber Carbon

What permits air/oil separation and relieves excessive pressure of the accessory geabox?

• Check port

• Drain port

• Relief port

• Vent port

Which component is not mounted on the accessory gearbox of APU?

• Oil Sump

• Load Control Valve

• Hydraulic Starter

• Fuel Control Unit

Which is not a sub-system of APU?

• Lubrication System

• Fuel System

• Electrical System

• Drives System

Which is not a function of APU lubrication system?

• Controls and monitors the lubrication flow rate to the engine components

• Stores and distributes engine oil for lubrication

• Cools and cleans vital engine components

• Supplies pressurerized oil flow for operation of the power takeoff clutch

What is the capacity of the APU oil sump?

• 1.0 Litres

• 1.5 Litres

• 1.9 Litres

• 2.5 Litres