Jet Systems

Question 1

What are some systems that use hydraulics?

Answer 1

Ailerons, Flaps, Nose-Wheel Steering, Brakes

Question 2

How does the hydraulic system on your aircraft maintain psi throughout all regimes of flight?

Answer 2

Accumulator, and pump

Question 3

Tell me what happens from when I hit the master switch to when the engines kick on turbine engine?

Question 4

If you lost your APU what systems would be affected?

Answer 4

In flight, the APU is a back-up source of power for the generators. On the ground, the APU provides power for lighting, heating, cooling, cockpit avionics, hydraulic pressure, and main engine starting.

Question 5

What is inside the accessory box?

Answer 5

The accessory drive is a gearbox that forms part of a gas turbine engine. Although not part of the engine’s core, it drives the accessories that are otherwise essential for the operation of the engine or the aircraft on which it is mounted. Example: - fuel pumps, -Hydraulic Pumps -Generator

Question 6

What is the difference between axial flow and centrifugal flow?

Answer 6

Axial flow is compressed air going thru the engine core (straight line), centrifugal flow is air going outward

Question 7

Is accessory gearbox attached to N1 or N2?

Answer 7

N2

Question 8

What systems require Bleed Air?

Answer 8

Pressurization System
Air conditioning System
Anti Ice System
Hydraulic/Water Reservoir Pressurization
Engine Starter Motor

Question 9

Where is the Bleed Air taken for Systems?

Answer 9

From the Low pressure Compressor stages of the engine or the APU

Question 10

Describe the path for bleed air used for air conditioning?

Answer 10

Bleed air will be taken from the low pressure compressor stages and ducted to an air to air heat exchange if installed prior to entering the main air conditioning system, after entering the main system the air will travel through different PACKS to lower the temperature even more and then be evenly distributed throughout the aircraft.

Question 11

How is Bleed Air monitored?

Answer 11

The temperature and pressure of the bleed air extracted from the engines or APU are measured by the bleed computer which has control over different valves, if an anomaly is detected it will automatically shutoff valves to prevent damage to other systems