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Details Title: Aerospace Propulsionn 5 Description: Jet Engine Journeyman AF Vol 5 Total Flash Cards: 130 Created: 07/16/2008 16:41:46	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term Vol  5  (801) 1. At which frequency do your ears become most susceptible to damage?  Definition   d. 4,000 hertz. Term Vol 5 (801)   2. Characterstics of jet engine exhaust that contribute to the dangers of working around operating aircraft include high temperatures, high velocity, and     Definition     c. toxicity. Term Vol 5 (801) 3. You should always stand clear of the compressor bleed valve during engine operation because of the dangers caused by           Definition a. air escaping at a high velocity. Term 4. (802) Internal fires that occur immediately after engine shutdown are usually the result of a faulty Definition c. dump valve.   Term 5. (803) If you encounter engine trouble where more than one unit is at fault, you would first Definition d. examine the unit that requires the least amount of time to replace. Term Definition Term 6.  (803) Aircraft power plant and engine intermediate maintenance technical orders(TOs) contain information on troubleshooting. This information is presneted in the form of Definition d. troubleshooting charts. Term 7.  (804) What system is used on most modern jet engines to gather and record engine data?   Definition b. Engine monitoring system (EMS) Term 8.  (804) If there's a problem in the F100-PW-220 aircraft engine, what action does the digital electronic engine control (DEEC) take? Definition d. Accomodates the fault and send fault ode to the engine diagnostic unit (EDU). Term 9. (805) You can determine if an engine is under warranty by looking at the Definition b. AFTO Form 95 Term 10. (805) The warranty on an F108 engine does not cover Definition c. consumable materials. Term 11.  (805) You receive a new piece of support equipment that is under warranty. At the time of receipt, Supply provides you with Definition a an Optional Form 274. Term 12. (806) To be considered effective tools for aviators, aircraft instruments mut be light-weight, easy to read, and Definition small in size Term 13. (806) An understanding of the operating princiles of engine instruments will help you decide Definition the meanings of the instrument readings Term 14. (807) Which jet engine temperature is not measured Definition combustion inlet. Term 15. (807) Which metals are used in the thermocouples of the exhaust gas termperature (EGT) indicating system? Definition Alumel and chromel. Term 16. (807) The exhaust gas temperature (EGT) indicator shows the average temperature of Definition all thermocouples in the system. Term 17.  (808) The fuel system component of a jet engine that operates by using a water wheel concept is the Definition fuel flow transmitter. Term 18.  (809) Two units that work together to indicte that the oil system is operating correcty are th eoil pressure Definition a. transmitter and indicator. Term 19.  (809) The oil pressure indicator receives an electrical signal from the Definition b. transmitter Term Definition Term 20. (810) The N2 tachometer generator is usually driven from the tachometer drive located on the Definition engine accessory section. Term 21. (810) The tachometer indicator is Definition an electric-magnetic-drag-type instrument. Term 22. (811) The exhaust nozzle position indicating system found on engines with afterburners is important because it Definition helps the pilot determine engine power. Term 23. (812) The purpose of the aircraft fire warning system is to detect Definition an overheat condition prior to an engine fire. Term 24.  (812) One type of overheat detector unit used on aircraft engines consists of a hollow stainless-steel tube that covers Definition two silver contacts. Term 25. (812) During an operational check of the fire warning system, you press Definition only the TEST switch. Term 26. (813) The term Pt2 means the Definition total (t) pressure (P) at flange 2 (2) Term 27. (813) the pressures used in the operation of the engine pressure ratio (EPR) system are the Definition engine inlet total pressure and exhaust total pressure. Term 28(814) You are testing an engine on the test cell. The breather gauge is showing excessively high breather pressure. This usually indicates Definition damage to engine bearing oil seals. Term 29. (814) The test cell exhaust gas temperature (EGT) selector allows selection of Definition individual thermocouple inputs or an average of these inputs. Term 30. (814) The test cell fuel flow rate indicator automatically controls the solenoid valves in the fuel module. The prupose of this action is to divert fuel flow throug the Definition flow turbines Term 31. (814) When properly adjusted, the accuracy of the test cell N 1 and N 2 speed indicator will be within Definition 2 RPM. Term 32. (814) The test cell IC temperature indicator displays temperatures in degress Fahrenheit, with a range of Definition -50 to +1,600 degrees Term 33. (815) What type of vibration causes unnecessary engine removals and unwarranted repairs? Definition Externally excited. Term 34.  (815) What kind of engine vibration does not persist, but comes and goes? Definition Transient Term 35. (815) During vibration analysis, why is it necessary to measure all parameters to identify a vibration source? Definition Displacement may be the same in two completely different p.roblems Term 36.  (816) Which type of vibration transducer is made up of certain ceramic compounds and natural crystals? Definition Piezoelectric accelerometer. Term 37. ( 816) To find instructions for installing vibration pickups at the test cell, you should check the Definition intermediate maintenance manual. Term 38. (817) The filter selector switch on the vibration analyzer is used to Definition allow seclection of the necessary filter Term 39.  (818) What procedure is used to ensure the fan and low pressure turbine are correctly balanced? Definition Fan rotor trim balance. Term 40. (819) The engine remote trimmer enables you to adjust the Definition fuel control without being under the engine Term 41.  (820) When connected to the engine, which piece of F100-PW-100 engine test equipment becomes an engine electronic control (EEC) Definition Supervisory control system (SCS) test set. Term 42. (821) You can find written instructions for safe flight line vehicle operations in Definition AFOSH STD 91-100. Term 43.(821) When operating an engine that is installed on aircraft, position the aircraft so the wind is Definition blowing directly into the inlet, with in +/-45 degrees Term 44. (821) The term trim means to adjust the engine systems for optimum performance per the limits in the TO. THere are two methods used to trim and engine. They are Definition manual and electronic Term 45. (822) The pressure gauges used for an oil system peressure check are connected at the Definition output side of the main oil pump and the vent system Term 46.  (823) Which C-141B aircraft oeprational check is used to determine if all four engines will produce the same amount of thrust? Definition Throttle alignment Term 47. (824) How many primary air silencers are there on aircraft noise suppressors to help reduce turbine whine? Definition Two Term 48. (824) Where are the primary silencers positioned on an aircraft noise suppressor? Definition Against the aircraft fuselage. Term 49. (824) The shutdown procedure for the aircraft noice suppressor is important because it Definition ensures the noise suppressor will be operational for the next aircraft. Term 50.  (825) What forms the sidewalls of the test bay portion of a hush house? Definition Air inlet modules Term 51. (826) Before moving an aircraft into the hush house, you must inspect the aircraft Definition and its forms Term 52.  (826) After running an engine in augmentation in the hush house, the augmentor tube is cooled by running the engine at idle for a period of Definition 3 minutes Term 53. (826) During an inspection of the hush house you are not required to check the   Definition engine being tested. Term 54. (827) In addition to determining the condition of a repaired or overhauled engine, you also test engines Definition that have been involved in an incident or a mishap Term 54. (827) In addition to determining the condition of a repaired or overhauled engine, you also test engines Definition that have been involved in an incident or a mishap. Term 55. (827) When testing a TF34 engine at test cell, which test is performed to ensure all operating limits and schedules from idle to max power are within limits?   Definition Transient check. Term 56. (827) Which testing engine is equipped with a quick engine change (QEC) kit? Definition TF39-IC. Term 57 (828) A portable test cell is not equipped with a Definition Hydraulically operated pylon mount cradle. Term 58. 9828) Which test cell noise suppressors use water to to cool the exhaust gases Definition both fixed and  portable Term 59.  (829) In a fixed test cel, the test bay access doors are sealed to Definition prevent unwanted noise from getting into the control room. Term 60.  (829) Engines are mounted in the fixed test cell on a thrust stand or are suspended Definition from a cradle mount Term 61. (829) In the fixed test cell, air for the negine intake comes through baffles located on Definition ceiling of the test cell. Term 62.  (830) The portable test cell is not equiipped with a Definition Model 3000 trailer. Term 63. ( 830) On the portable test cell, the swivel pads at the bottom of the leveling jacks on the engine thrust trailer provide for all of the following except Definition support the thrust trailer at a high of 80 inches Term 64. (830) The vibration pickups on the portable test cell are cooled by Definition the pneumatic system Term 65.(831) When an engine arrives for a test run at the test cell, it must Definition be operable with all known discrepancies corrected Term 66.(831) Immediately prior to an engine test cell run, you should check the engine and quick engine change (QEC) kit (if applicable) for loose nuts, bolts, lock wire, tools, or any other material. Doing this will help Definition eliminate items that could possibly cause foreign object damage (FOD). Term 67.(831) Which engine area should be checked for foreign object damage (FOD) prior to operation on the test cell facility? Definition Bleed valve ports Term 68. (831) Improperly rigged throttle linkage druing a test cell run can cause Definition engine overspeed. Term 69(831) Prior to conducting a test cell run, you must determine the correct type and grade of oil used in the engine being tested. You'll find this information in the Definition applicable engine publications. Term 70. (831) In what step of a test cell leak check do you accomplish a final check for leaks? Definition During engine coast down. Term 71. ( 832) Before installing an engine on the test cell thrust stand, make sure the Definition rail adapters for the engine and stand are compatible Term 72.(832) to prevent damage to the load cells when you are transferring an engine to the test stand, Definition secure the upper and lower ralis. Term 73.(832) When preparing to install the miscellaneous kit prior to a test cell run, you should inspect all indicators and controls for Definition possible damage. Term 74. (832) Where would you begin your investigation of an engine with a possible oil consupmtion problem? Definition Review AFTO For 781H, Aerospace Vehicle Flight Status and Maintenance. Term 75.(832) If an engine stalls or surges during a test cell run, you should investigate the Definition variable stator vanes Term Definition Term 76. (832) Pt7 can be varied during an engine test cell trim by Definition adjusting the fuel control Term 77.(833) Responsibility for the proper preventive maintenance of a test cell facility rests with the Definition individuals assigned Term 78. (833) How often are service inspections conducted on the test cell? Definition Daily Term 79.(834) One of the most important safety rules to follow before you remove an engine from an airframe is to Definition disconnect all external power from the aircraft. Term 80. (834) Disconect points that are used for removing an engine from an airframe are identified with Definition orange paint Term 81.(835) Which condition indicates that a jet engine has had a complete major overhaul? Definition The engine timme is 00:00. Term 82 (835) What item is always suspect when an overspeed condition is indicated?   Definition Revolutions per minute (RPM) indicator Term Definition Term 83. (835) When an engine has windmilled for a long time, you should Definition be concerned about damage to the bearings. Term 84.(836) Removal of the engines from a single- or two-engine fighter aircraft often requires the removal of a part of the Definition empennage. Term 85. (837) Before you rmove an engine from any aircraft, your first priority is to ensure Definition the aircraft is safe for maintenance. Term 86.(837) to gain access to the engine during an F-16 engine removal, you open doors and remove panels. How are these foor and panels identified in the job guide? Definition By number Term Definition Term 87. (837) When removing an F100 engine from and F-16 aircraft, you must exercise care when yu are removing or handling the power takeoff (PTO) shaft because any dents, scratches, or nicks could cause Definition excessive vibration. Term 88. (838) You are installing an F100 engine in an F-16 aircraft. To do this properly, you should position the engine so the engine forward mount is Definition 3 inches from the upper rail on the aircraft. Term 89. (838)  You are installing an F100 engine in an F-16 aircraft. To do this properly, you would connect the aircraft bulkhead to the engine rear mounting flange with a Definition mount link Term 90. (838) You are installing an F100 engine in an F-16 aircraft. When installing the throttle control rack coupling, you must ensure the throttle coupling is all the way on the power lever angle shaft and the bolt goes into the groove of the shaftl. If you do not do this, you could cause Definition an engine to be completely out of control. Term 91. (839) You are removing and F117 engine from a C-17 aircraft. To prevent the aircraft from falling back onto the aft fuselage, you must Definition extend stabilizer struts Term 92. (839) You are preparing to remove an F117 engine from a C-17 aircraft. What is the enginelift trailer (ELT) load limit set to on the control pendant load limit switch? Definition 17,000 lbs. Term 93. (839) You are removing an F117 engine from a C-17 aircraft. When rolling the cradle from the transportation trailer to the enginelift trailer (ELT), how many people must be used and where should they be positioned? Definition 2 people, rear of cradle Term 94.(839)You are removing an F117 engine from a C-17 aircraft. What must be done to the mount bolts after they are removed? Definition Inspect for cracks and defects Term 95.(840) You are installing an F117 engine on a C-17 aircraft. Before you start the installation, ensure the proper shop conducts an inspecton of the Definition pylon Term 96.(840) You are installing an F117 engine on a C-17 aircraft. What is the maximum load that may be placed on the pylon when raising the engine into the pylon mount points? Definition 2,000 lbs Term 97. (841) Most likely, an improperly rigged power ever will lead to Definition an overspeed condition Term 98.(841) What engine components require proper rigging from the fully closed (cambered) position to the fully open (axial) position Definition variable vanes Term 99. (842) Which resource is not affected bby improper rigging? Definition scheduling Term 100. (843) When inspecting compressor rotor blades with a borescope, the inspection limits get tighter Definition near the blade root Term 101.(843) During an inspection, compression blade defects that are within limits are   Definition blended Term 102.(843) The high-pressure compressor of the F110 engine can be visually inspected easily because of the Definition horizontal split design. Term 103.(844) Defects (such as cracks) found during combustion chamber borescope inspections Definition are continually monitored as long as they are within limits Term 104. (844)Borescope inspections of most jet engine combustion chambers are possible because the inspection ports are located near the Definition bottom of the engine Term 105. (844) An inspection of the combustion chamber of a disassembled engine reveals what appears to be a crack. If you are unsure about this finding, you should Definition call for an nondestruction inspection (NDI) technician. Term 106. (845) Through extensive testing, engine manufacturers determine how long a particular part should last. This is known as the Definition service life Term 107.(845) Using the wrong cleaning agent on a jet engine part Definition could destroy it Term 108. (846) Providing a ethod for performing required inspections on a scheduled and controlled basis is the prupose of waht inspection and maintenance concept? Definition Planned Term 109.(846) Which one is not an ispection phase? Definition Home station check. Term 110.(847) Which one of these inspections is a flight preparedeness check? Definition Preflight. Term 111.(847) What type of inspection is required during a basic post-flight inspection to make sure no defects exist on certain systems and components? Definition visual Term 112.(848) What inspection is done on aircraft parts that require infrequent inspections? Definition periodic Term 113.(848) Which inspection is a combination of the basic post-flight/hourly post-flight and periodic inspection requirements? Definition phased Term 114.(849) Which concept uses specified calendar intervals upon which to build a schedule? Definition Isochronal. Term 115.(849) The home station check (HSC) inspection is a combination of the basic post-fl9ight and Definition hourly post-flight items. Term 116.(850) Which inspection is conducted by maintenance personnel after an occurrence of a specific or unusual condition? Definition Special Term 117. (851) A cold compressor stall that occurs at low revolutions per minute (RPM) and is accompanied by a slight overtemperature is called Definition an incipient. Term 118.(851) Which symptom is not an indication of a compressor stall? Definition Drop in exhaust gas temperature. Term 119. (851) Careless operation of the throttle during emergency system operation could cause a compressor stall due to Definition rapid throttle movement. Term 120. (851) Compressor section failure from a chain reactiondue to blade-to-blade and blade-to-vane interference is known as Definition circumferential force. Term 121.(851) What is the probabe cause of compressor rotor shift? Definition Thrust bearing failure Term 122.(852) Overtemperature damage to the combustion chamber from a stall condition is caused by Definition an interruption of cooling airflow. Term 123.(852) If the turbine nozzles are burned out uniformy around the whole annulus from and overtemperature condition, this is known as a Definition severe stall condition with disrupted cooling airflow. Term 124.(853) Which characteristic is the most common cause of bearing failure? Definition Complete loss of lubrication.