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AD STUDYING > Common Core 2 > Flashcards

Common Core 2 Flashcards

1
Q

Electricity

A

the physical phenomena arising from the existence and interaction of an electrical charge

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2
Q

Voltage, or EMF(Electromotive Force)

A

the amount of force being applied to a circuit to produce an electron flow

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3
Q

Amperage, or current flow

A

quantity of electricity flowing through the circuit

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4
Q

Resistance

A

opposition to the flow of electrons offered by a device or material

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5
Q

OHM(Omega)

A

the measurement of resistance to current flow

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6
Q

Watt

A

measurement of electrical work done

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7
Q

Forms of Electricity?

A

Static and Dynamic

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8
Q

Static Electricity

A

is electricity at rest, produced by friction and not easily measured nor controllable or useable

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9
Q

Dynamic Electricity

A

practical form of current flow, easily produced, measured, and controlled

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10
Q

Methods of Producing Electricity?

A

Mechanical, Chemical, Thermal, and Pressure

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11
Q

Mechanical produced electricity

A

by rotating a magnetic field through another magnetic field

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12
Q

Chemical produced electricity

A

surrounding two or more metallic plates with a chemical electrolyte

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13
Q

Thermal produced electricity

A

joining two dissimilar metals and applying heat

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14
Q

Pressure produced electricity

A

applying pressure to quartz, which will produce an electron flow

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15
Q

Types of Electricity?

A

DC(direct current) and AC(alternating current)

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16
Q

DC

A

is a steady current flow in one direction only, produced by a DC generator, or chemically by a battery

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17
Q

AC

A

flow that reverses direction at specific intervals, HERTZ/CYCLES. produced mechanically by an AC generator

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18
Q

SAFETY AROUND ELECTRICAL EQUIPMENT

A

determine power requirements before testing, inspect test equipment for calibration date

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19
Q

Multimeter

A

measures voltage, current, and resistance

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20
Q

Before making a resistance measurement??

A

remove all power to the circuit under test and discharge all residual voltage from storage capacitors

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21
Q

Multimeter Low Battery indicator

A

100 hours of life remain, standby mode kicks in after 1 hour of no use

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22
Q

AIRCRAFT ELECTRICAL SYSTEM

A

provides electrical power to the various aircraft systems

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23
Q

COMPONENTS OF THE Aircraft Electrical System

A
  1. Generator
  2. Control Switches
  3. Generator Advisory Lights
  4. AC/DC Transformer Rectifiers
  5. Power Distribution(AC/DC BUSES)
  6. Emergency Generator
  7. External Electrical Power Receptable
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24
Q

Aircraft Electrical System: Generator

A

produced AC power of three phase, 115/200VAC, 400Hertz. Driven by a constant speed drive(CSD) unit that regulates the generator at a constant speed

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25
Q

Aircraft Electrical System: Control Switches

A

located in the flight station/cockpit. Used to select electrical power

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26
Q

Aircraft Electrical System: Generator Advisory Lights

A

located in the flight station/cockpit. Indicates if the generator is supplying power

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27
Q

Aircraft Electrical System: AC/DC Transformer Rectifiers

A

convert AC power to DC power

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28
Q

Aircraft Electrical System: Power Distribution(AC/DC Buses)

A

a number of circuits may be connected, protected by circuit breakers.

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29
Q

Aircraft Electrical System: Emergency Generator

A

three phase 115/200VAC, 400Hertz generator that will provide electrical power to both essential AC and DC buses in the even of main generator failure. NOT ALL AIRCRAFT HAS EMERGENCY GENERATORS

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30
Q

Aircraft Electrical System: External Electrical Power Receptacle

A

Provides a means of connecting an electrical source of external electrical power for ground maintenance and servicing

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31
Q

Pictorial Diagram

A

simplest of all diagrams. provides readily component identification

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32
Q

Block Diagram

A

Arrangement of blocks that are labeled with the name of each component, presents a general description

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33
Q

Schematic Diagram

A

most useful of all diagrams, provides overall aid to system operation. Illustrates various components that make up the system

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34
Q

Series circuit

A

a circuit with only one path for current flow

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35
Q

Parallel circuit

A

circuit with two or more paths for current flow known as branches

36
Q

Series-Parallel circuit

A

circuit which is part series and part parallel

37
Q

Engine Electrical System

A

provides electrical power to the engine performance indicators.

38
Q

Engine Electrical System Components

A
  1. Engine Speed Indicating System
  2. Engine Temperature Indicating System
  3. Fuel Flow Indicating System
  4. Oil Pressure Indicating System
  5. Engine Fire Detection System
39
Q

Tachometer Indicator

A

indicates compressor rotor RPM in %.

40
Q

Tachometer Generator

A

mounted and splined to the accessory gearbox, creates an electrical signal representing rotational speed of engine compressor

41
Q

Thermocouple Assembly

A

mounted in the turbine or exhaust section, they are 2 dissimilar metals Alumel and Chromel, creating voltage signal of engine exhaust temp

42
Q

Fuel Flow indicating system

A

indicates the amount of fiel being consumed by the engine in PPH

43
Q

Fuel Flow Transmitter

A

mounted on the engine, provides an electrical signal that is proportional to the mass rate of fuel flow

44
Q

Oil Pressure Indicating System

A

provides indication of engine oil pressure in PSI

45
Q

Engine Fire Detection System

A

alerts pilot of an engine bay fire or overheat

46
Q

Fire Detection Element

A

senses an overheat condition or fire and transmits the signal

47
Q

Starting System

A

provides initial rotation to accelerate the engine to the point where ignition can be accomplished and sustained

48
Q

Ignition System

A

provides a high energy spark at the engine ignitor plugs

49
Q

Type of ignition system….

A

a high energy capacitor discharge type

50
Q

Ignition System Components

A

Input leads
Transformer
Ignitor Leads
Ignitor Plugs

51
Q

Types of Engine Lubrication Systems

A

Wet Sump and Dry Sump

52
Q

Wet Sump—-

A

stores oil within the gearbox, used primarily on centrifugal flow engines

53
Q

Dry Sump—-

A

stores oil in a separate oil tank, used on axial flow engines, allows a larger supply of oil

54
Q

OIL pressure relief valve

A

limits maximum system pressure, and returns excess oil to the inlet side

55
Q

Lubrication System Pumps

A

Pressure element pump

Scavenge element pump

56
Q

Types of Pumps

A

Gear type–may be dual or multi element

GErotor type–may be single dual or multi element

57
Q

Lubrication System Filters

A

Cartridge Filter–periodically removed and replaced
Screen Filter–can be cleaned and reused
Screen Disk Filter–can be cleaned and reused

58
Q

Lubrication Heat Exchangers

A

Transmits heat from the oil to Air or Fuel

Air/Oil and Fuel/Oil

59
Q

Lubrication Jets(Nozzles)

A

direct oil onto the bearings and or gears, can be mist or solid spray

60
Q

Oil Pressure Transmitter

A

senses oil in the lube system, sends signal to indicator displaying pressure in PSI

61
Q

Types of Lubricating Oils

A

Petroleum based and Synthetic based

62
Q

Oil used in most gas turbine engines is?

A

MIL-L-23699 or NATO O-156

63
Q

Main Engine Bearings

A

support compressor and turbine rotors to allow free rotation

64
Q

What determines the Number of bearings?

A

Length, Weight, and the number of rotors

65
Q

Accessory bearings

A

allow accessory shafts and gears to move freely

66
Q

Types of Bearings

A

Ball bearings–absorbs axial and radial loads

Roller bearings–used in high centrifugal force areas, absorbs radial loads only

67
Q

Oil Seals

A

Labyrinth, Thread, and Carbon

68
Q

Labyrinth seal

A

controlled by engine bleed air

69
Q

Thread seal

A

seal that uses reverse threading and centrifugal force to retain oil

70
Q

Carbon seal

A

a spring loaded seal mated with a machined surface

71
Q

Aircraft Fuel Systems purpose

A

to provide a controlled means of receiving fuel from external sources and supply fuel to the engine

72
Q

Jet Propellant is a type of?

A

highly refined kerosene and is clear or light straw in color, classified into grades

73
Q

Volatility

A

ability to evaporate

74
Q

AVGFE

A

aviation gas free engineering, must be performed prior to entering any type of fuel cell

75
Q

Aircraft Fuel Pumps

A

delivers a continuous supply of fuel to the engines UNDER ALL OPERATING CONDITIONS

76
Q

Types of Aircraft fuel pumps

A

Transfer Pump and Boost Pump

77
Q

What must be performed prior to entering any type of Fuel Cell for Maintenance

A

AVGFE (Aviation Gas Free Engineering)

78
Q

Electrically operated shut-off valves are commonly referred to as?

A

Gate valves

79
Q

Why are Manually operated shut-off valves important?

A

they may be closed to stop fuel flow in case of fire

80
Q

Fuel Drains purpose

A

drain condensation, excess fuel, and samples of fuel.

81
Q

External tank capacity

A

150, 300, 400 gallons, mounted on pylons on the underside of the wings and fuselage

82
Q

do not conduct _________ within _____ feet of operating aircraft

A

fueling operations, 100 feet

83
Q

how many people is required for fueling

A

minimum of 3

84
Q

Engine-Driven Fuel Pump

A

provides a continuous supply of fuel AT THE PROPER PRESSURES under all operating conditions

85
Q

Aircraft Fuel Pumps

A

provides a continuous supply of fuel to the engines under all operating conditions

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