Jet Engine Testing Methods And Proceedures Flashcards
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?
Manuel and electronic
When operating an engine that is installed on an aircraft, position the aircraft so that the wind is blowing?
Directly into the inlet, within +-45 degrees
When checking the turbine section, what are the three temperatures you measure?
Fan turbine inlet temp (FTIT)
Turbine inlet temp (TIT)
Exhaust gas temp (EGT)
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?
OFF
Which F-16 operational check allows you to start the JFS without advancing the throttle to idle or supplying fuel to the aircraft engine?
Dry motoring
Where are the primary silencers positioned on the aircraft noise suppressor?
Against the aircraft fuselage
Why is the shutdown procedures or the aircraft noise suppressor important?
It ensures the suppressor will be operational for the next aircraft
What forms the sidewalls of the test bay portion portion of a hush house?
Air inlet modules
What is the hush house exhaust deflector constructed of?
Small panel modules filled with noise reduction material
Before moving an aircraft into the hush house, what must you inspect?
The aircraft and its forms
What hush house feature allows for flexibility when you are running an engine that has been removed from the airframe?
The thrust stand slides into position on tracks
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
3 minutes
In addition to determining the condition of a repaired or overhauled engine you should also test engines?
That have been in an incident or a mishap
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?
Transient check
Which testing engine is equipped with a QEC kit?
TF39-1C
what is a portable test cell is not equipped with?
Hydraulically operated pylon mount cradle
Which test cell noise suppressors use water to cool the exhaust gases?
Both fixed and portable
In a fixed test cell, why are the test bay access doors sealed?
Prevent unwanted noise from getting into the control room
Engines are mounted in the fixed test cell on a thrust stand or are suspended from a?
Cradle mount
In the fixed test cell, air for the engine intake comes through baffles located on the?
Ceiling
On the portable test cell, what do the swivel pads at the bottom of the leveling jacks on the engines thrust trailer provide for?
Leveling engine, removing wheels , and rail adjustment
What are the vibration pickups on the portable test cell are cooled by?
Pneumatic system
What is the noise suppressor at a portable test cell equipped with?
An exhaust muffler, two air intake mufflers, and a water semitrailer
Before operating an engine at a test cell, you must always check its status as indicated on the?
Engine forms
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?
Eliminate items that can cause FOD
What is not considered a cause of FOD?
Failure of internal parts
What engine areas should be checked for FOD prior to operation on a test cell facility?
Bleed valve ports and turbine area
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?
Applicable engine publications
In what step of a test cell leak check do you accomplish the final check for leaks?
During engine coast down
When making general entries on a test cell engine log sheet, what should you do with the engine model and serial number?
Verify these numbers on the engine data plate
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?
A damaged aft bearing oil seal
If an engine stalls or surges during a test cell run, you should investigate the?
Variable stator vanes
Responsibility for the proper preventative maintenance of a test cell facility rest with the?
Individuals assigned
What information is used as an aid in test facility inspections?
Periodic inspection checklist
How often are service inspection conducted on a test cell?
Daily
