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142 Cards in this Set
- Front
- Back
Which of the following types of engines depends solely on ram effect for combustion? |
Ramjet |
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What is developed by a ramjet with an increase in pressure? |
Thrust |
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What is the difference between Mass and Weight? |
Mass is the quantity of matter Weight is the pull of gravity on that quantity of matter |
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What effect does a divergent duct have on airflow? |
Decrease velocity of the air and increase the pressure. |
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What is the definition of "Ram Effect"? |
More air arriving at the engine intake than the engine can ingest |
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Acceleration is defined as ______. |
the rate of velocity change. |
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What symbol representing the force of gravity is normally used to calculate the acceleration of a given mass? |
M-Mass |
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What condition indicates a standard day at sea level? |
29.92 inches of mercury, and a temperature of 59.0 F |
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In the formula F= M x A, what is the measurement unit for M (mass)? |
Slugs |
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What type of aircraft uses a Turbofan enigine? |
F/A-18 |
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What does the "F" indicate in the enigine designation F404-GE-400? |
Turbofan |
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What is the MIL-STD-879 manufacture's letter sybol for Allison Division, General Motors Corporation? |
AD |
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What model number does a Navy-sponsored engine begin with? |
400 |
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What are the three parts of the MIL-SRD-879 engine designation system? |
Type indicator, manufacture's symbol, and model indicator. |
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What is the most serious disadvantage of the axial-flow compressor? |
High tendency to stall |
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Approximately what percentage of the air entering the combustion chamber serves as flame control? |
75% |
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What is a very typical type of combustion chamber? |
Can Type |
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What type of fuel nozzle is used in a jet engine? |
Simplex and Duplex |
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A 10-stage axial flow compressor consists of what total number of rotors and stators? |
5 rotors and 5 stators |
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A single air entrance is more advantageous than a duel air entrance system for what reason? |
It obtains maximum ram pressure |
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What does the Tool Control Program (TCP) ensure? |
a reduction of FOD-related mishaps |
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Who is responsible for ensuring tools are procured and issued on a controlled basis? |
Material Control Officer |
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What is the first step that is required if a tool is found missing during a tool box inventory? |
Conduct an immediate search |
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What two types of hammers should an AD be familiar with? |
Mallet/Ball peen |
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How many different types of handles are used with sockets? |
Three |
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What is the degree offset of a combustion wrench? |
15 degrees |
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What is the purpose of the offset on a combination wrench? |
Increased clearance |
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What other name is used for the adjustable wrench? |
Knuckle Busters |
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How would you describe an offset screwdriver? |
Screwdriver with both blades bent at 90 degrees |
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What purpose are diagonal cutters used for? |
To cut small wire and cotter pins |
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What are safety wire pliers used for? |
Hold, twist, and cut wire |
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Which of the following is considered a "special tool"? Wrench Torque wrench Pliers Hammers |
Torque wrench |
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What are the most common types of torque wrenches? |
Deflecting beam, dial indicator, and micrometer setting |
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How many types of micrometers are commonly used throughout the Navy? |
Three |
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What are the three principle parts of a bolt? |
Head, grip, and threads |
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What head styles do AN bolts come in? |
Eyebolt, clevis, and hex head |
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What do self-locking nuts provide? |
Tight connections that do not loosen under vibrations |
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How would you describe safety wiring? |
A method of wiring together two or more units |
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What is the purpose of cotter pins? |
To secure bolts, screws, nuts, and pins |
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How many pigtail twists, if any, are needed at the end of the wiring job? |
3 to 6 |
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How is support equipment (SE) normally identified? |
Powered/Non-powered |
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What is the most common powered SE |
Mobile electric power plants (MEPPs) |
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Maintenance platforms are designed for what purpose? |
To safely reach or work on parts of the aircraft inaccessible from the ground. |
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What is the working height, in feet, of a B-4 stand? |
3 to 7 feet |
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What action is always required prior to operating the hanger engine hoist? |
Preoperational inspection |
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What actions are a safety precaution when an engine is being supported by the hoist? |
Always make sure the hoist load test date is current |
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What is the primary purpose of a fuel system? |
To supply fuel to the engine under all demands |
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What are considered the two aircraft fuel systems? |
Aircraft and engine |
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Which of the following properties of fuel affects nozzle performance most? |
Viscosity |
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What does FSII mean? |
Fuel system icing inhibitor |
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How are U.S. military grades of jet fuels designated? |
JP followed by a number |
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What visual standards must aircraft fuel samples meet to be acceptable? |
Colorless and free sediment |
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What actions are required if fuel samples are considered bad? |
Save original, drain1 pint of fuel from tank, resample |
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When visually check a fuel sample for correct color and water content, how should you check for coarse particles? |
By swirling it to form a vortex that will force the sediment to the center |
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How many primary layers of materials do self-sealing cells contain? |
Four |
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What is the NATO symbol of JP-5? |
F-44 |
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What is the minimum flash point of JP-5? |
140F |
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Fuel tank construction depends upon which factors? |
Types of aircraft and misson |
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What are three advantages of bladder-type fuel cells as compared to self-sealing fuel cell? |
Greater fuel capacity, less weight, and lower cost |
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What manual is used for fuel cell maintenance? |
NA 01-1A-35 manual |
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What regulates and controls the flow of fuel in the aircraft? |
Fuel valves |
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When should check valves be installed in a fuel system? |
When fuel supply needs to flow in one direction only |
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What does fuel control designator N2 stand for? |
High-pressure compressor rotor speed |
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What is the purpose of a tensionometer? |
To ensure correct cable tension |
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What categories are mineral base lubricants divided into? |
Solids, semi-solids, and liquids |
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What operational factors determine the grade of lubricating oils used in engines? |
Operating conditions |
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What oils are the primary type of oils used in the Navy and Marine Corps turbine engines? |
MIL-PRF-23699 |
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What function performed by oil depends on circulation of the lubricant? |
Cooling |
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How many digits are in the grade number that identifies an aircraft engine lubricating oil? |
Four |
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Which of the components is found only in a dry-sump lubrication system? Oil Cooler Pressure Pump Reservoir Scavenge Pump |
Oil Cooler |
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What is the NATO number for the primary oil used in jet engines? |
O-156 |
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What is the purpose of the oil filter bypass? |
Allows oil to flow around the filter if it becomes clogged |
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How many different types of valves are used in a jet lubrication system? |
Three |
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Which of the following components is an important part of the lubrication system? Pump Valve Filter Converter |
Filter |
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What are three common methods of preloading carbon seals? |
Spring tension, centrifugal force, and air pressure |
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What is JOAP? |
Joint Oil Analysis Program |
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How are wear metals generated? |
By the motion between metallic parts |
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What is the purpose of the DD-2026 form? |
Request oil sample verification |
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What is the purpose of the oil tank vent system pressure relief valves? |
To assure a positive flow in the oil system |
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Which of the following oil seals is usually spring loaded? |
Carbon |
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What indicator does a chip detector use to alert the pilot of metal contamination in the engines oil system? |
A warning light |
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What publication will give you additional information about packing shelf life? |
DOD 4140.27 |
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What branch of science deals with the study of liquids in motion? |
Hydraulics |
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What is the NAVAIR 01-1A-17? |
Aviation hydraulics manual |
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What factor causes particle generation of a mechanical nature? |
Frictional contacts |
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What is the chief source of chemical contamination? |
Oxidation |
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What are the two general classes of hydraulic contaminates? |
Abrasives and non-abrasives |
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Why should hydraulic liquid be kept below specified temperatures? |
The liquid will break down chemically |
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What is a precipitate? |
A solid substance that was chemically separated from a solution |
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Which of the following is a example of a non-abrasive contaminate? Rust Sand Sludge Weld plaster |
Sludge |
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What law or principle states that pressure applied to a confined liquid is transmitted undiminished in every direction? |
Pascal's law |
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What manual provides hydraulic maintenance procedures? |
NA 01-1A-17 |
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What are the three methods of producing electricity? |
Heat, mechanical, and chemical |
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What device or component converts chemical energy into electrical energy? |
Battery |
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What units of force are necessary to cause electrons to flow within a circuit? |
Volts |
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What component supplies electrical power to the ignition system during flameouts or armament firing? |
Ignition deactivator |
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What component of the capacitor discharge ignition system reduces the discharge time to a minimum? |
Storage capacitor |
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What section of the engine is bleed air tapped from? |
Compressor section |
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Why is ice forming on aircraft surfaces extremely dangerous? |
An aircraft can become unbalanced |
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What condition results when water vapor turns directly into a solid? |
Frost |
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What is an APU |
Auxiliary power unit |
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What are the two basic types of compressors? |
Centrifugal Flow and Axial Flow |
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What is the 4 basic types or classes of jet engines? |
Rocket Pulsejet Ramjet Jet Turbine |
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What happens to the compressed air in a turbo jet after leaving the compressor section? |
It enters the combustion chamber |
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What does Newton's first law state? |
A body at rest tends to remain at rest and a body in motion tends to move at a constant |
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What publication can you find complete identification of threaded fasteners? |
NAVAIR 01-1A-8 |
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What are the two basic types of Turbine Blades? |
Impulse and reaction |
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What synthetic oil do most jet engines use today? |
MIL-L-23699 |
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What are 2 general classes of contaminates? |
Abrasive and non-abrasive |
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What are the 6 positions marked on the turboprop power level quadrant? |
Max Reverse -0 Ground Idle -9 Start - 15 Flight Idle - 34 Air Start -48 Take Off -90 |
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What fluid line color code is for lubrication? |
Yellow |
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What model # does a navy sponsored engine begin with? |
400 |
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What type of aircraft uses a turbofan engine? |
F/A 18 |
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What conditions indicate a standard day at sea level? |
2.92in of Mercury, and a temperature of 59 degrees |
|
Acceleration is defined as ________. |
The rate of velocity change |
|
What effect does a divergent duct have on airflow? |
A decrease in velocity of the air and an increase in the perssure |
|
What is the difference between mass and weight? |
mass if the quantity of matter Weight is the pull of gravity on that amount of mass |
|
What type of engine depends solely on ram effect for combustion? |
Ramjet |
|
What are the 2 types of hammers an AD should be familiar with? |
Mallet/Ball Peen |
|
What does the TCP ensure? |
reduction of FOD related mishaps |
|
What types of fuel nozzle are used in a jet engine? |
simplex and duplex |
|
What are the 3 parts of the MIL-SRD-879 Engine Designation System? |
type indicator, manufacture's symbol, and model indicator |
|
What is the purpose of the fixed-swirl vanes of the T-700-GE-401 engine? |
To impart rotation to the airflow |
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What are the 3 basic types of combustion chamber? |
Can, Basket, Canannular |
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How are the different types of lubricants classified? |
Animal Vegetable Petroleum Mineral Synthetic |
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When are inventories performed? |
Before a shift change Work Stoppage After Maintenance |
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What instruction gives a complete description of different tools and uses? |
NAVEDTRA 10085 |
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What size Ball peen hammer is used for most work? |
A 1 1/2 pound or a 12 ounce hammer |
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What is the simplest composition of a turboprop? |
Intake Compressor Combustor Turbine Propelling Nozzle |
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What does Newton's 3rd law state? |
For every action there is an opposite and equal reaction |
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How are all gas turbine engines rated? |
With the standard air temperature of 59 degrees |
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What are 2 methods of classifying inlet ducts? |
Single entrance+ divided entrance
Subsonic/ Supersonic |
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What color VID's Board tag is "Inoperable"? |
Orange |
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What color VID's Board tag is "Shortage/Leave"? |
Green |
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What is the pub for NAVOSH afloat? |
OPNAVINST 5100.19 |
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BCM 5? |
Fails check and test |
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In the Flight Pocket, what is the DD 1896? |
White Identaplate |
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What is the minimum distance of all possible ignition hazards when fueling an aircraft? |
100 feet |
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What is "Flash Point"? |
Lowest temperature at which a fuel gives off a vapors that will burn when spark or flame is applied |
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Define a Calorie. |
Temperature needed to raise: 1 gram of water to 1 degree Celsius |
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Define Jettison |
Process by which fuel/tanks are thrown overboard, or discarded from the a/c |
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Name 4 Mechanical Cleaning Materials. |
Abrasive papers Polishing Cloth Polishing Compounds Steel Wool & Wadding |