BLOCK II - POWERPLANTS

Question 1

Which lights should be on/flashing while engines are running and demonstrate location?

Answer 1

Anti-collision lights

Question 2

Nomenclature for P-8A engine

Answer 2

CFM56-7B

Question 3

What type of engine is in the P-8A?

Answer 3

A high bypass, dual rotor, turbofan engine producing 27,300 lbs of thrust.

Question 4

Describe the propulsion system

Answer 4

-Primary airflow goes into the core of the engine. The booster increases air flow and sends in to the high pressure compressor (HPC)
-Secondary airflow goes into the fan duct. it supplies approximately 80 percent of thrust during takeoff.

Question 5

Purpose of the Low Pressure Compressor (LPC)

Answer 5

Increases the speed of airflow

Question 6

Purpose of the High Pressure Compressor (HPC)

Answer 6

Increase pressure of air from the LPC and sends it to the combustor. Also supplies bleed air for the aircraft pneumatic system and engine air system

Question 7

Purpose of the APU

Answer 7

-Supplies bleed air for air conditioning (air and ground)
-Supplies electrical power in the ground
-Provides pneumatic power for engine starting and operating two air conditioning packs

Question 8

Purpose of the Integrated Drive Generator (IDG) Oil Cooler

Answer 8

-It is a heat exchanger
-Uses engine fuel to decrease the temperature of the IDG oil
-Heats engine fuel (stops formation of ice)

Question 9

What is the Ignition System used?

Answer 9

-Ground start
-Takeoff and landing
-In-Flight (during heavy turbulence or bad weather)
-In-Flight start

Question 10

What two components are in the Fuel Pump Assembly and describe them?

Answer 10

-Fuel pumps- supplies pressurized fuel to the engine
-Fuel filter- filters fuel

Question 11

Which fuel tank usually supplies the APU?

Answer 11

Main 1

Question 12

APU oil burn rate

Answer 12

0.271 fl-oz per hour