Engine Indication

Question 1

What are performance indicators

Answer 1

Monitor performance limits on engines and set thrust flight phases

Question 2

What are system indicators

Answer 2

Monitor operation of engine systems such as oil or fuel

Detect malfunctions

Question 3

What is engine trend monitoring

Answer 3

Done on ground to detect engine problems at every stage

Question 4

What does an engine trend monitoring system use

Answer 4

Parameter’s automatically recorded by Acms

Question 5

Is it possible to measure thrust directly

Answer 5

No

Question 6

2 ways we find the value of thrust

Answer 6

Rotational speed of fan (N1)

Engine pressure ratio

Question 7

What do engine system indicators do

Answer 7

Monitor correct operation of engine systems

Question 8

What do the indications for oil system monitor

Answer 8

Oil quantity , oil pressure and oil temperature

Question 9

Where are warnings and cautions showed

Answer 9

Displayed on ECAM/EICAS

Question 10

How is engine trend monitoring showed

Answer 10

ACMS provides print-out for cockpit printer

Transmit the data via ACARS

Question 11

What does thermodynamic analysis check

Answer 11

Pressured and temps along gas flow path

Question 12

What failures does mechanic dynamic check

Answer 12

Failures in rotor system , does this by checking vibration and rotor speed signals

Question 13

What does the oil consumption analysis do

Answer 13

Generates signal when oil consumption reaches a certain level

Question 14

What’s the N1 indication

Answer 14

Low pressure rotor

Question 15

N2 indication

Answer 15

High pressure rotor

Question 16

N3 indication

Answer 16

Engine has 3 rotors

Question 17

How are engine rotor speed indications expressed

Answer 17

Percentage of 100% design speed

Question 18

Speed indication parts

Answer 18

Sensor

Data transmission

Indication

Question 19

3 parts of epr indication

Answer 19

Indicator in cockpit

Computer

Two pressure pickups connected by tubes with computer

Question 20

Max EGT indications

Answer 20

600-900 degrees C

Question 21

Where is highest EGT temp

Answer 21

Directly behind combustion chamber

Question 22

Turbine inlet temperature

Answer 22

Higher then 1400 degrees C

Question 23

Why is EGT measured from colder location

Answer 23

turbine inlet temperature can be too hot

Question 24

What gears are in a hydraulic torque meter

Answer 24

Sun and planet gears in epicyclic gear assembly

Question 25

What do helical cut teeth do in a hydraulic torque meter

Answer 25

Transmit increasing axial thrust

Question 26

Where are two concentric shafts in electronic torque meter

Answer 26

Between engines & gear box

Question 27

What does the inner shaft do in electronic torque meter

Answer 27

Powers transmitting shaft

Question 28

Where is outer shaft connected to in electronic torque meter

Answer 28

Attached to inner shaft at rear end

Question 29

What’s the 3 clock types

Answer 29

Clock type scale Moving vertical bar Electromechanical indicator

Question 30

What do the clock type indicators do

Answer 30

Show EGT in degrees C in analog and digital

Question 31

What is a red line

Answer 31

Max EGT that shouldn’t be exceeded

Question 32

What is amber line

Answer 32

Max EGT for max continuous thrust setting , can only be exceeded during take off and go around thrust

Question 33

What is the relationship between EGT AND TIT

Answer 33

Direct relations

Question 34

What indication is vibration

Answer 34

Secondary indication

Question 35

How does the cockpit show vibration

Answer 35

Vibration level in Units 0-6

Question 36

What is EVMU

Answer 36

Engine vibration monitoring unit aka the computer

Question 37

What’s component is a vibration sensor

Answer 37

Accelerometer that measures radial acceleration of rotor system

Question 38

Where are the two vibration sensors

Answer 38

One in compressor Seconds in turbine area

Question 39

How is vibration indication controlled

Answer 39

Automatically by monitoring unit

Question 40

How does ECAM generate 2 indications

Answer 40

From single sensor

Question 41

What happens when fwd sensor fails on ECAM

Answer 41

Switches to aft

Question 42

How many modes of indication does EICAS use

Answer 42

4 modes

Question 43

What is BB

Answer 43

broadband which is a unfiltered vibration signal

Question 44

How is actual fuel flow measured (unit)

Answer 44

Kg or tons per hour

Question 45

How is fuel used since engine started measured

Answer 45

Kg or tons

Question 46

What generates fuel flow and fuel used

Answer 46

Fuel flow transmitter

Question 47

What does a fuel flow transmitter do

Answer 47

Measures mass flow of fuel between control unit and fuel nozzles

Question 48

How does fuel flow transmitter get its force measurement

Answer 48

Acceleration of fuel done by an impeller

Question 49

Two types of oil quantity transmitter

Answer 49

Capacitance and reed switch

Question 50

Where is oil pressure transmitter connected to

Answer 50

Oil supply line & oil tank vent line

Question 51

Two types of oil pressure sensor

Answer 51

Bourbon tube and strain gauge

Question 52

What is engine low oil pressure warning accompanied with

Answer 52

Acoustic warning

Question 53

Two types of oil temperature sensor

Answer 53

Thermo couple Thermistor

Question 54

Where is oil temperature sensor found

Answer 54

Scavenge system

Question 55

What does scavenge system check

Answer 55

Hot oil temperature upstream of oil cooler

Question 56

What does pressure system check

Answer 56

Temperature of cooled oil

Question 57

What is soap

Answer 57

spectrometric oil analysis program

Question 58

What size particles does soap find

Answer 58

0.001-0.02mm