Jet Engine Testing Methods And Proceedures

Question 0

The term trim means to adjust the engine system for optimum performance per the limits in the TO. What are the two methods used to trim an engine?

Answer 0

Manuel and electronic

Question 1

When operating an engine that is installed on an aircraft, position the aircraft so that the wind is blowing?

Answer 1

Directly into the inlet, within +-45 degrees

Question 2

When checking the turbine section, what are the three temperatures you measure?

Answer 2

Fan turbine inlet temp (FTIT)
Turbine inlet temp (TIT)
Exhaust gas temp (EGT)

Question 3

Prior to starting the engine when doing an anti-icing valve operation check on an F-16C/D, what do you place the anti-icing switch to?

Answer 3

OFF

Question 4

Which F-16 operational check allows you to start the JFS without advancing the throttle to idle or supplying fuel to the aircraft engine?

Answer 4

Dry motoring

Question 5

Where are the primary silencers positioned on the aircraft noise suppressor?

Answer 5

Against the aircraft fuselage

Question 6

Why is the shutdown procedures or the aircraft noise suppressor important?

Answer 6

It ensures the suppressor will be operational for the next aircraft

Question 7

What forms the sidewalls of the test bay portion portion of a hush house?

Answer 7

Air inlet modules

Question 8

What is the hush house exhaust deflector constructed of?

Answer 8

Small panel modules filled with noise reduction material

Question 9

Before moving an aircraft into the hush house, what must you inspect?

Answer 9

The aircraft and its forms

Question 10

What hush house feature allows for flexibility when you are running an engine that has been removed from the airframe?

Answer 10

The thrust stand slides into position on tracks

Question 11

After running an engine in augmentation in the hush house, the augmenter tube is cooled by running the engine at idle for a period of

Answer 11

3 minutes

Question 12

In addition to determining the condition of a repaired or overhauled engine you should also test engines?

Answer 12

That have been in an incident or a mishap

Question 13

When testing a TF34 engine at a test cell, which test is performed to ensure all all operating limits and schedules from idle to maximum power are within limits?

Answer 13

Transient check

Question 14

Which testing engine is equipped with a QEC kit?

Answer 14

TF39-1C

Question 15

what is a portable test cell is not equipped with?

Answer 15

Hydraulically operated pylon mount cradle

Question 16

Which test cell noise suppressors use water to cool the exhaust gases?

Answer 16

Both fixed and portable

Question 17

In a fixed test cell, why are the test bay access doors sealed?

Answer 17

Prevent unwanted noise from getting into the control room

Question 18

Engines are mounted in the fixed test cell on a thrust stand or are suspended from a?

Answer 18

Cradle mount

Question 19

In the fixed test cell, air for the engine intake comes through baffles located on the?

Answer 19

Ceiling

Question 20

On the portable test cell, what do the swivel pads at the bottom of the leveling jacks on the engines thrust trailer provide for?

Answer 20

Leveling engine, removing wheels , and rail adjustment

Question 21

What are the vibration pickups on the portable test cell are cooled by?

Answer 21

Pneumatic system

Question 22

What is the noise suppressor at a portable test cell equipped with?

Answer 22

An exhaust muffler, two air intake mufflers, and a water semitrailer

Question 23

Before operating an engine at a test cell, you must always check its status as indicated on the?

Answer 23

Engine forms

Question 24

Immediately prior to an engine test cell run, you should check the engine and QEC kit for loose nuts, bolts, safety wire, tools, or any other material to help?

Answer 24

Eliminate items that can cause FOD

Question 25

What is not considered a cause of FOD?

Answer 25

Failure of internal parts

Question 26

What engine areas should be checked for FOD prior to operation on a test cell facility?

Answer 26

Bleed valve ports and turbine area

Question 27

Prior to conducting a test cell run, you must determine the engine’s type and grade of oil used, which can be found in the?

Answer 27

Applicable engine publications

Question 28

In what step of a test cell leak check do you accomplish the final check for leaks?

Answer 28

During engine coast down

Question 29

When making general entries on a test cell engine log sheet, what should you do with the engine model and serial number?

Answer 29

Verify these numbers on the engine data plate

Question 30

During a test cell run, if you observe oil on the turbine wheel or oil smoke at or near the turbine section, what is this an indication of?

Answer 30

A damaged aft bearing oil seal

Question 31

If an engine stalls or surges during a test cell run, you should investigate the?

Answer 31

Variable stator vanes

Question 32

Responsibility for the proper preventative maintenance of a test cell facility rest with the?

Answer 32

Individuals assigned

Question 33

What information is used as an aid in test facility inspections?

Answer 33

Periodic inspection checklist

Question 34

How often are service inspection conducted on a test cell?

Answer 34

Daily