Cahpter 16: Engine Monitoring Ground Operation Flashcards

1
Q

safety precaution areas of engine

A

1) air intake (suction)
2) exhaust (temp., velocity, toxicity, noise)
3) hot engine parts
4) fuel & oil
5) ignition
6) compressor bleed valves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

which areas do enigne borescopic inspection check on?

A

compressor blades
combustor
compressor-turbine blades
compressor-turbine vanes
free turbine blades

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

what does engine borescopic inspection check for?

A

1) damage on blades/vanes from FOD or corrosion
2) burn marks, cracks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

types of contaminants that enters the compressor

A

1) dirt
2) oil vapours
3) soot
4) exhaust fumes
5) salt

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

what can be improved after a compressor wash?

A

1) TIT (down)
2) compressor inlet temp. (down)
3) burner efficiency
4) compression ratio
5) efficiency of compressor & turbine

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

procedures for engine starting and ground run

A

1) leak check on pneumatic, fuel, oil system
2) vibration tests to trim mass and location
3) availability of power
4) availability of IDG power
5) engine acceleration test

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

engine operation limits

A

1) N1 N2 overspeed
2) EGT

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

what is dry motoring?

A

supplies fuel to fuel pump but not to combustion chamber (no fuel comes out of FCU)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is wet motoring?

A

supplies fuel to fuel pump, combustion chamber and fuel servo pressure components, but with no ignition in chamber

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

tests carried out for engine certification

A

1) fan blade out
2) bird / water ingestion
3) triple redline (EGT, N1, N2, oil temp.)
4) high altitude start
5) cold start

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

what information is on the engine data plate?

A

1) builder name
2) model designation
3) builder serial number
3) type cert number
4) product cert number

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

what components are driven by the accessory gearbox?

A

1) LP/HP fuel pump
2) oil pump
3) starter motor
4) hydraulic pump
5) IDG
6) centrifugal breather

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

why is engine borescopic inspection used?

A

no need to disassemble engine to check combustor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly