Ae2100D3 Engine

Front 1

What do the compressor bleed air valves do?

Back 1

are on the 10th stage of the compressor. the help in preventing stall or surge by controlling the air bleed during start and acceleration. They close after the engines start

Front 2

what is the compressor start bleed control valve.

Back 2

located on the aft anti icing tube at the diffuser housing, it controls 14th stage air pressure applied to the top area of each upper and lower compressor air bleed valves

Front 3

What does the CVG actuator do?

Back 3

changes compressor stator vanes 1-5 to assist in power control. controlled with high pressure fuel from the FPMU

Front 4

How many stages of reduction are in the PGB?

Back 4

2

Front 5

What 5 components mount onto the GMAD?

Back 5

AC Generator, hydraulic pump, PCU, OSG (high pressure pump), PGB lube and scavenge pump

Front 6

What connects the PGB to the engine?

Back 6

The torquemeter. There are also 2 struts that provide structural support

Front 7

What are the primary functions of the PGB?

Back 7

Transmit shaft power from the torquemeter to the prop, reduce shaft rpm, and supply shaft power to the GMAD gear train

Front 8

What are the ratios of reduction in the pgb?

Back 8

first stage is 3.226:1

second stage is 4.333:1

total of 13.98:1

Front 9

What are the primary functions of the torquemeter assembly?

Back 9

transmit engine output power to the pgb, adds stability from engine to pgb, supplies calibrated torque reference to the fadec

Front 10

What 4 components make up the torquemeter assembly?

Back 10

The torquemeter shaft, reference shaft, the housing, and anti-icing shroud

Front 11

What is the Compressor?

Back 11

14 stage axial flow with one (inlet guide vane) IGV and 5 stages of (compressor variable geometry) CGV

Front 12

What is the air inlet housing?

Back 12

Primary structural units of compressor. aluminum alloy with 6 radial struts to allow anti icing air to flow through. the bottom strut is the opening for the radial drive bevel pinion gear shaft that drives the PUAD

Front 13

What is the compressor case?

Back 13

holds the compressor rotor. bolts to air inlet housing and diffuser. has an integral bleed air manifold at tenth stage.

Front 14

what does the tenth stage bleed air manifold do?

Back 14

collects air at the tenth stage that bleeds out of the engine through the compressor start bleed control valves during engine start. Also supplies heated pressurized air for the aircraft to use

Front 15

What is the purpose of the combustion liner?

Back 15

it is where ignition and combustion take place. There are 16 ports for the fuel nozzles and 2 for the igniters. the annular combustion liner is cooled by effusion cooling(many tiny holes in the liner wall that make a "cooling blanket" that protect the liner from the combustion gases)

Front 16

what does the turbine do?

Back 16

Takes the energy of the flowing gases and mechanically turns the turbine using shaft power. it is 4 stages. stages 1 and 2 drive the compressor while 3 and 4 supply the power to turn the pgb and the prop.

Front 17

What does the PUAD do?

Back 17

mounted on bottom of forward end of compressor air inlet housing. supplies mounting flanges for FPMU, alternator stator, starter, and p/s lube and scavenge pump, and brackets for FCOC

Front 18

What does the FPMU do?

Back 18

It acts as the interface between the FADEC and the fuel nozzles. Run by the FADEC and mounted on the PUAD, and it pumps, filters and meters fuel, provides fuel filter bypass indication, and moves the CVG actuator.

Front 19

describe the pump in the FPMU

Back 19

There are 2 pumps. The first element is a low pressure centrifugal pump. It raises the pressure of incoming fuel to meet op req for the high press gear pump

Front 20

explain the fuel filter in the FPMU

Back 20

it has 2 bypass filters and 1 bypass valve. The valve opens at 19-20 psi

Front 21

What is the primary source of power for the FADEC

Back 21

Alternator Stator. However, the aircraft 28VDC Power supply powers FADEC until engine rpm is sufficient enough to take control

Front 22

How many fuel filter bypass indicators are there?

Back 22

The are 2, an actual and an impending.

Front 23

How does the fuel flow work?

Back 23

goes from tank to FPMU, goes through the first stage low pressure centrifugal pump, then to the FCOC. Then goes pack to the FPMU into the fuel filter, then through the high pressure gear pump. then the flow wash filter and metering valve. goes through the mass flow sensor to the left and right fuel manifolds, and then to the nozzles.

Front 24

What does the Alternator Stator supply power to?

Back 24

The FADECs and the ignition system.

Front 25

What is the alternator stator output?

Back 25

20-40 VAC

Front 26

What is the purpose of the exciters?

Back 26

convert the power from the stator into the high energy needed for ignition.

Front 27

How many sparks can the exciters create?

Back 27

4-7 per second

Front 28

When does the alternator stator supply the 20-40 VAC to the exciters?

Back 28

When the engine is more than 10% Ng (gas generator speed)

Front 29

what is the anti icing air valve controlled by?

Back 29

the NIU

Front 30

Why would the anti icing air valve be energized in the closed position?

Back 30

if you lose power to it, It is deenergized open so that way you always have access to anti icing air

Front 31

What does the anti icing air valve supply 14th stage bleed air to?

Back 31

the air inlet housing struts, igv, cip sensors, it sensors, torquemeter, nacelle air inlet scoop, and the nacelle oil cooler scoop

Front 32

what are the CIT sensors and how many are there?

Back 32

there are 2. they sense the air temp before it reaches the compressor. they send the signal to the fadec so it can correct the power settings due to the ambient air temp

Front 33

what are the CIP sensors and how many are there?

Back 33

three are 2. mounted at 12 oclock on the air inlet housing, they measure inlet pressure, and send the info to the fadec to control engine functions