Powerplants

Question 0

What needs to be on when engines are running on deck?

Answer 0

Flashing anti-collision light on the top of the aircraft.

Question 1

What are the hazards and areas around a P-3C engine?

Answer 1

Propeller area (prop arc) and propeller jet blast area (heat and blast-propelled objects.)

Question 2

What are the hazards and areas around a P-8A engine?

Answer 2

Engine inlet suction area and engine exhaust area.

Question 3

What type of engines is the P-3C equipped with?

Answer 3

Four T56-A-14 turboprop powerplant assemblies.

Question 4

How are the engines and propellers controlled on the P-3C?

Answer 4

By manual actuation of the engine power levers.

Question 5

What does the engine power lever system consist of on a P-3C?

Answer 5

Four independent subsystems, one for each engine. Each has a pair of engine power levers. Corresponding levers coupled by a torque tube, but different engine levers can be moved independently.

Question 6

What type of engines is the P-8A equipped with?

Answer 6

Two CFM56-7B engines. (Dual-rotor, axial flow turbofan)

Question 7

What do the rotors consist of in a CFM56-7B engine?

Answer 7

N1 - a low-pressure compressor and a low-pressure turbine.

N2 - a high-pressure compressor and a high-pressure turbine.

Question 8

How are the thrust levers positioned on a P-8A and what do they each control?

Answer 8

Automatically by the autothrottle system or manually by the flight crew.
Forward thrust levers - from idle to maximum
Reverse thrust levers - from reverse idle to maximum reverse

Question 9

Describe the propellers on the P-3C.

Answer 9

Variable pitch, constant speed, hydromatic propeller assembly mounted on each
powerplant assembly.

Question 10

What maintains the constant speed of the engine on a P-3C?

Answer 10

The blade pitch changing mechanism in conjunction with the fuel control assembly.

Question 11

How are the propeller blades of a P-3C positioned for ground idle and reverse?

Answer 11

Positioned to provide zero or negative thrust.

Question 12

What does feathering propellers of a P-3C accomplish?

Answer 12

Lays them flat with the airstream, minimizing drag.

Question 13

Where are the fuel tanks on a P-3C?

Answer 13

From left to right (facing forward), No. 1, No. 2, No. 3, and No. 4 with tank No. 5 as an auxiliary tank in the center.

Question 14

Which fuel tank normally supplies the fuel to the P-3C’s APU?

Answer 14

No. 2

Question 15

Describe fuel storage on the P-8A.

Answer 15

Five fuel tank groups: main 1, main 2, center, forward tank group, and aft tank group. And two surge tanks.

Question 16

Which fuel tank normally supplies the fuel to the P-8A’s APU?

Answer 16

Main 1.

Question 17

Describe the auxiliary fuselage fuel tank in the P-3C.

Answer 17

Consists of two separate interconnected fuel tanks; the integral wing center section fuel tank and a bladder cell fuel tank in the fuselage.

Question 18

Where are the pressure fueling adapters on a P-3C?

Answer 18

Adjacent to each other just forward of the flaps in the aft inboard section of the right wing.

Question 19

How is fueling normally accomplished on a P-3C and what is the alternative if equipment is not available to do so?

Answer 19

Pressure fueling.

Overwing fuel caps. (Gravity fueling)

Question 20

What is the total fuel capacity of a P-3C?

Answer 20

9200 gallons.

Question 21

What is the OBIGGS and its function on a P-8A?

Answer 21

Onboard Inert Gas Generating System.
Provides nitrogen-enriched air to the center, wing and auxiliary tanks to protect from ballistic threats. Keeps tanks at or below 9% oxygen levels.

Question 22

Through what is aerial refueling accomplished on the P-8A?

Answer 22

The Universal Aerial Refueling Receptacle Slipway Installation. (UARRSI)
Installed in the crown of the aircraft.

Question 23

What is the total fuel capacity of the P-8A?

Answer 23

10,856 gallons.

Question 24

What do the P-8A fuel feed system, engine fuel feed and integrated drive generator cooling system consist of?

Answer 24

Fuel tanks
Boost pumps
Fuel lines and fittings
Shutoff valves (convey and control fuel flow at proper pressure and flow rates)

Question 25

What is engine bleed air utilized for on the P-3C?

Answer 25

Bomb bay heating
engine anti-ice
wing de-ice
oil cooler augmentation 
cross-bleed engine starting.

Question 26

What makes the P-3C an all-weather capable aircraft?

Answer 26

Engine anti-ice
wing de-ice
Empennage de-ice (electrical)
Propeller de-ice (electrical)
Windshield heat (electrical)
Windshield wipers

Question 27

What is engine bleed air utilized for on the P-8A?

Answer 27

Engine cowl lip anti-ice

Wing anti-ice (three inboard leading edge slats)

Question 28

What makes the P-8A an all-weather capable aircraft?

Answer 28

Engine anti-ice
Wing anti-ice
Empennage and wingtip de-ice (electrical)
Windshield heat (electrical)
Windshield wipers

Question 29

Where is the P-3C’s APU and what does it consist of?

Answer 29

Lower fuselage compartment just aft of nose landing gear wheel well.
Consists of a compressor, gas turbine engine, and an engine-driven electrical generator.

Question 30

What is the function of the P-3C’s APU?

Answer 30

Pneumatic power for engine starting and aircraft environmental control system.
Electrical power for on the ground and emergency in-flight operations.

Question 31

Where is the P-8A’s APU and what does it consist of?

Answer 31

In a fireproof compartment in the tail of the aircraft.

Self-contained gas turbine engine.

Question 32

What is the function of the P-8A’s APU?

Answer 32

Pneumatic power for engine starting or air conditioning.

Electrical power from starter-generator.