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73 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What could be a cause of a compressor stall when there is a restriction of air at the air inlet? |
Icing of the aircraft or engine inlet |
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Which subsystem is not included in the oil system? Pressure Scavenge Indicating Monitoring |
Monitoring |
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On the TF33, where on the intermediate compressor case is the oil tank mounted? |
Right side |
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What type oil pump is on the TF33? |
2 section, single stage, gear driven |
#of sections, #of stages, _ driven |
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Which subsystem is not part of the oil indicating system? Pressure Quantity Scavenge Temperature |
Scavenge |
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What happens if the generator frequency becomes unstable? |
Accuracy of electronic equipment is affected |
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A generator's voltage output is roughly proportional to its _ |
Revolutions per minute |
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How many electrical phases does a TF33 engine driven generator produce? |
3 |
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The generator control unit provides system protection and control, and _ |
Voltage regulation |
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During TF34 engine start, all fuel, up to a flow rate of _ pounds per inch, will bypass the oil cooler |
350 |
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The TF34 fuel pump consists of a low and high pressure stage, relief valve, and a |
Pressure regulating valve |
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How many pounds per inch does the TF34 fuel pump boost stage increase the fuel inlet pressure? |
80 |
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When the red warning button is pooped out on the fuel filter housing, it indicates _ |
Fuel is bypassing the filter element |
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The splined coupling engine shaft transmitted a signal off the core engine speed to what fuel system component? |
Main fuel control |
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Where is the excess meters fuel, from the servo and fuel pump discharge fuel, bypassed back to? |
Inlet of the primary main pumping element |
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Metered fuel is supplied to the fuel distributor through what two things? |
Quick engine change fuel flow transmitter and oil cooler |
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On engine shutdown, as fuel pressure decreases to below 40-60 psi, the drain valve in the fuel distributor moves to the left, doing what? |
Opening the drain, shutting of fuel flow to the distributor. |
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On the TF34, why is injector 13 configured differently? |
To provide clearance between three injector and fuel control |
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Under hot fuel conditions at the commissioner inlet, the altitude starting capability of the TF34 is _ |
Diminished |
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During start up, all fuel flow, up to how many pounds per hour, is forced through the bypass line around the oil cooler? |
350 |
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Which type of fuel system is used in the TF34 to prevent spontaneous combustion of residual fuel after engine shutdown? |
Shutdown drain system |
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The F108 engine monitoring system data that is incorporated as part of the flight data recorder is used to determine what? |
The need for maintenance before an engine failure occurs |
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Data that is recorded for each engine is downloaded and distributed via the _ |
Computer card |
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When troubleshooting, after isolating the problem between two points what should you not do? |
Inspect other areas |
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In what format do TOs present aircraft power plant and engine intermediate mx troubleshooting procedures? |
Troubleshooting charts |
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To be an expert troubleshooter, you must _ |
Understand the function of each component within each system |
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On an F108, which manifold is the anti-ice air supplied from? |
Compressor case |
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On an F108, sitting what stage of engine operation can the anti-ice valve be manually locked? |
Shutdown or idling |
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The inlet duct on multiengine subsonic aircraft has a diameter that progressively |
Increases from the front to the back |
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How does the compressor bleed system reduce the probability of a compressor stall in a dual-rotor engine? |
By reducing the amount of air available to the high-pressure compressor. |
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What stage of the compressor airflow provides the cooling air for the turbine nozzle vanes? |
Last |
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On an F108, the direction of the variable bleed valve rotation is controlled by what? |
The fuel gear motor |
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On an F108, which cable relays the variable bleed valve position to the main engine control as the valve approaches the commanded closed position? |
Feedback |
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One type of aerodynamic blockage thrust reverse uses _ |
Vanes inside the duct to create swirling gases |
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How many core blocker doors are on the F117? |
7 |
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The function of the fuel pump on an F117 is to provide fuel directly to the fuel _ |
control |
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What two components ooerate together to provide the thrust managememt system for the F117? |
Electronic engine control, and fuel control unit. |
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A typical jet engine exhaust gas temperature indicating system contains thermocouples, thermocouple leads, an indicator, and a _ |
resistor. |
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What fuel-flow system component of a jet engine operates by using a water wheel concept? |
Transmitter. |
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Two units that work together to indicate the oil system its operating correctly is the oil pressure _ and _ |
transmitter and indicator. |
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An oil pressure transmitter contains a mechanical section and a _ |
synchronous unit. |
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Where is the tachometer drive located that operates the HPC rotor tach gen? |
Engine accessory section. |
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What switch is pushed during an operational check of the fire warning system? |
TEST. |
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The test cell exhaust gas temperature (EGT) selector allows selection of _ |
Individual thermocouple inputs or an average of all these inputs. |
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Within how many rpm is the accuracy of the test cell LPC and HPC speed indicators? |
2 rpm |
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What type of vibration causes unnecessary engine removals and unwarranted repairs? |
Externally excited. |
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During vibration analysis, frequency is usually measured in _ |
Cycles per second. |
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Which type of vibration transducer is made up of certain ceramic compounds and natural crystals? |
Piezoelectric accelerometer. |
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The filter selector switch on the vibration analyzer allows for what? |
Selection of the necessary filter to remove the natural vibration frequencies of a specific engine. |
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What supports the fan and LPT? |
Bearings |
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Written instructions for safe flightline vehicle operation can be found where? |
AFOSH 91-100 |
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Where are the two pressure gauges connected when conducting a jet engine oil system pressure check? |
Output side of the main oil pump and the vent system |
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Which mirroring check allows you to start three auxiliary power unit without advancing the jet engine throttle to idle? |
Dry |
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Where do the primary air silencers, that are designed to reduce the high-frequency turbine whine of a jet engine, fit on an aircraft? |
On the aircraft fuselage |
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What forms most of the test bay portion sidewalks of a hush house? |
Air inlet modules |
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What hush house piece of equipment allows for positioning of the removed engine directly in front of the augmentor tube? |
Thrust stand |
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What establishes the time intervals for visual inspections and periodic maintenance requirements for the hush house? |
Technical orders. |
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What is the first step in engine testing? |
Determine the type of engine maintenance performed before coming into the test facility. |
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What are the two types of engine test cells currently used in the Air Force? |
Fixed and portable. |
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Engine are mounted in the fixed test cell on a thrust stand or are suspended from what? |
A cradle mount |
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In the fixed test cell, where does the engine intake air come from? |
Ceiling. |
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On the portable test cell, the swivel pads at the bottom of the levelling jacks on the engine thrust trailer can support the thrust trailer at what height? |
40 inches. |
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The noise suppressor on a portable test cell is equipped with what 3 things? |
Exhaust muffler, intake mufflers, and a water tank semitrailer. |
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In what condition should an engine arrive auxiliary test cell? |
Operable with all known discrepancies corrected. |
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What must be quickly moved to the "OFF" position should an unsatisfactory engine start occur in the engine test cell? |
Engine throttle. |
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What can an improperly rigged throttle linkage cause during an engine test cell run? |
Engine overspeed. |
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What action should be taken when making engine model and serial number entries on the test cell engine log sheet? |
Verify these numbers against the engine data plate. |
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What happens to jet engine operational efficiency as the operational hours increase? |
Deteriorates due to wear. |
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When making adjustments to any of the engine systems to bring them to specification during a test cell run, how should you adjust the device? a test cell run, how should you adjust the device? a test cell run, how should you adjust the device? |
Up, not down to the required limit. |
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How can the turbine outlet pressure total at station number 7 be varied during an engine test cell trim? |
Adjusting the fuel control. |
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When adjusting the fuel control during an engine test run, you cash get the temperature and barometric pressure from equipment at the test cell site or from where? |
The base air traffic control tower |
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What item is used with the applicable TO to inspect a facility? |
Periodic inspection checklists |
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How often are service inspections conducted on an engine test cell? |
Daily |
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