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Second Sem First Sem > AMT 2203: Powerplant Overhaul & Troubleshooting > Flashcards

AMT 2203: Powerplant Overhaul & Troubleshooting Flashcards

1
Q

It is called as internal combustion

A

Reciprocating engine

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2
Q

Uses one or more pistons in order to convert pressure into rotational motion

A

Reciprocating engine

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3
Q

Two types of reciprocating engine

A

Lycoming and continental

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4
Q

The camshaft is on the top of the crankshaft

A

Lycoming

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5
Q

The camshaft is at the bottom of the crankshaft

A

Continental

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6
Q

The cycle is also called the ________

A

Otto cycle

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7
Q

Four strokes

A

Intake, compression, power and exhaust

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8
Q

Five events

A

Intake, compression, ignition, power and exhaust

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9
Q

It is located on the camshaft that opens and closes the intake and exhaust valves

A

Cam lobe

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10
Q

The part responsible for transmitting the movement of the camshaft towards the intake and exhaust valves of the engine

A

Rocker arm

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11
Q

Foundation of engine

A

Crankcase

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12
Q

Reduce the friction of moving parts

A

Bearings

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13
Q

Three types of bearings

A

Plain bearings, ball bearings and roller bearings

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14
Q

non-ferrous and used for crankshaft, cam ring, camshaft and connecting rods

A

Plain bearings

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15
Q

Basic major components of a reciprocating engine

A

Crankcase, cylinders, pistons, connecting rods, valves, valve operating mechanism and crankshaft

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16
Q

Consists of grooved inner and outer races.

A

Ball bearings

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17
Q

They are used for shaft bearings and rocker arm bearings in some reciprocating engine

A

Ball bearings

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18
Q

Two types of roller bearings generally used in the aircraft engine

A

Straight roller and the tapered roller bearings

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19
Q

Used in high power aircraft engines as main bearings to support the crankshaft

A

Roller bearings

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20
Q

Backbone of the reciprocating engine

A

Crankshaft

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21
Q

It is subjected to most of the forces developed by the engine

A

Crankshaft

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22
Q

4 Main parts of a crankshaft

A

Main journal, crankpin, crank cheek and counterweights and dampers

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23
Q

The part of the crankshaft that is supported by and rotates in the main bearing

A

Main journal

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24
Q

It is also called connecting-rod bearing journal

A

Crankpin

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25
Q

The crankshaft will rotate when a force is applied to the ________ in any direction other than parallel to a line directly through the center line of the crankshaft

A

Crankpin

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26
Q

Sometimes called the crank arm, is the part of the crankshaft which connects the crankpin to the main journal

A

Crank cheek

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27
Q

It supports a counterweight used to balance the crankshaft and it is usually provide with drilled oil passages

A

Crank cheek

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28
Q

It provides static balance for a crankshaft

A

Counterweight

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29
Q

To relieve the whip and vibration caused by the rotation of the crankshaft

A

Dynamic dampers

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30
Q

It is the link which transmit forces between the piston and the crankshaft of an engine

A

Connecting rod

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31
Q

The end of the rod which connects to the crankshaft and also called as crankpin end

A

Large end

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32
Q

The end which connects to the piston pin and also called as piston-pin end

A

Small end

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33
Q

A cylindrical member which moves back and forth within a steel cylinder

A

Piston

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34
Q

Two types of piston rings

A

Compression rings and oil rings

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35
Q

The purpose of this ring is to prevent the escape of combustion gases past the piston during engine operation

A

Compression rings

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36
Q

The purpose of this ring is to control the quantity of lubricant supply to the cylinder walls and to prevent the oil from passing into the combustion chamber

A

Oil rings

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37
Q

How many oil control ring is on a piston

A

One

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38
Q

Sometimes called a wrist pin

A

Piston pins

39
Q

It joins the piston to the connecting rod

A

Piston pins

40
Q

The piston pin used in a modern aircraft engines is the __________

A

Full-floating type

41
Q

It is an internal combustion engine converts the chemical heat energy of the fuel to mechanical energy and transmits it through piston and connecting rods to the rotating crankshaft

A

Cylinder

42
Q

The cylinder used in a air cooled engine is the __________

A

Overhead valve type

43
Q

7 components of a cylinder

A

Cylinder barrel
cylinder head
valve guides
valve rocker arm supports
Valve seats
spark plug bushings
cooling fins

44
Q

Provide a place for combustion of the fuel and air mixture and to give the cylinder more heat conductivity for adequate cooling

A

Cylinder head

45
Q

Provides mountain pads for the accessory units

A

Accessory section

46
Q

It also serves as part of the lubrication system

A

Accessory case

47
Q

A significant feature of the __________ is that separate sections are devoted to each function and all functions are performed simultaneously without interruption

A

Gas turbine engine

48
Q

Four types of gas turbine engines

A

Turbojet, turboprop, turbofan and turboshaft

49
Q

It is located at the front of the compressor

A

Air inlet

50
Q

It must have a clean aerodynamic design to ensure a smooth evenly distributed air flow into the engine

A

Inlet

51
Q

Its primary function is to supply air in sufficient quantity to satisfy the requirements of the combustion burners

A

Compressor section

52
Q

Its secondary function is to supply bleed air for various purposes in the engine and aircraft

A

Compressor section

53
Q

The ______ is taken from any of the various pressure stages of the compressor

A

Bleed-air

54
Q

Types of compressors

A

Centrifugal flow compressors and axial flow compressor

55
Q

This type of compressor consists of an impeller or rotor, a diffuser or stator and a compressor manifold

A

Centrifugal flow compressor

56
Q

This term means that the air is compressed by centrifugal force

A

Centrifugal

57
Q

This compressor operate by taking in outside air near the hub and rotating it by means of an impeller

A

Centrifugal compressor

58
Q

The air flows axially that is, in a relatively straight path in line with the axis of the engine

A

Axial flow compressor

59
Q

It consists of two elements: a rotating member called the rotor and the stator, which consists of rows of stationary blades

A

Axial flow compressor

60
Q

Two common types of action flow configurations

A

Single spool or solid spool and the split spool or dual spool

61
Q

It houses the combustion process which raises the temperature of the air passing through the engine

A

Combustion section

62
Q

Primary function is to burn the fuel and air mixture, thereby adding heat energy to the air

A

Combustion section

63
Q

Three types of combustion chambers

A

Can type, can-annular type and annular type

64
Q

This type of combustion chamber is consist of an outer shell and a removable liner with openings to permit compressor discharge air to enter from the outer chamber

A

Can type combustion chamber

65
Q

This combustion chamber has characteristics of both the annular and can types

A

Can annular type combustion chamber

66
Q

This combustion chamber operates at a high pressure level, aiding efficient combustion at reduced power and high altitudes

A

Can annular combustion chamber

67
Q

This type of combustion chamber makes the most efficient use of the available space

A

Annular type combustion chamber

68
Q

The function of this section is to extract kinetic energy from the high-velocity gases leaving the combustion section of the engine

A

Turbine section

69
Q

The function of this section is it must direct the flow of hot gases rearward in such a manner as to prevent turbulence and at the same time impart a high final or exit velocity to the gases

A

Exhaust section

70
Q

Two types of exhaust nozzle designs

A

Converging design for subsonic gas velocities and the converging-diverging design for supersonic gas velocities

71
Q

These instruments are designed to constantly measure operating parameters relating to the aircraft’s engine

A

Engine instruments

72
Q

It is an instrument that indicates the speed of the crankshaft of a reciprocating engine

A

Tachometer or tach

73
Q

Used to monitor engine power and to ensure the engine is operated within certified limits

A

Tachometer

74
Q

Tachometer color codes

A

Green - operating range
Yellow - caution range
Red - maximum limit

75
Q

It measures the cylinder head temperature of an engine

A

Cylinder head temperature gauge

76
Q

It is also shows the effectiveness of the engine cooling system

A

Cylinder head temperature gauge

77
Q

Extremely high cylinder head temperature means _______

A

Engine overload

78
Q

A measurement of the temperature of the exhaust gases at the exhaust manifold

A

Exhaust gas temperature gauge

79
Q

It can be used as a basis for regulating the fuel and air mixture entering the engine

A

Exhaust gas temperature gauge

80
Q

It indicates an engine’s fuel use in real time

A

Fuel flow meter

81
Q

This can be useful to the pilot for ascertaining engine performance and for flight planning calculations

A

Fuel flow meter

82
Q

This indicates oil pressure and temperature

A

Oil gauge

83
Q

This instrument is one of the most important instruments when it comes to monitoring the engine

A

Oil gauge

84
Q

The operating range of oil gauge

A

180°F to 190°F

85
Q

Reading should adjust to the oil warming up to ___ minutes

A

15

86
Q

It is the step-by-step procedure used to determine the cause of a given fault and then select the best and quickest solution

A

Troubleshooting

87
Q

Six troubleshooting process

A

Symptom recognition
symptom elaboration
listing of probable faulty functions
localizing the fault
isolating the fault to a component
failure analysis

88
Q

The prerequisites for troubleshooting are to be familiar with the normal engine condition and to be able to recognize when an engine is not operating properly

A

Symptom recognition

89
Q

It is the next logical step once a fault or malfunction has been detected

A

Symptom elaboration

90
Q

Test equipment, built in or external help the technician to evaluate the performance of the engine and its components

A

Symptom elaboration

91
Q

When the technician has located all the symptoms of the malfunction or fault, the third step is to list, either mentally or on paper, the possible causes

A

Listing of probable faulty functions

92
Q

It is an attempt to determine which functional system of the engine is actually creating the problem

A

Localizing the fault

93
Q

Once the malfunction is isolated to one system, additional testing is done to isolate the fault to a specific component. The technician often uses test equipment to measure or indicate the correct outputs for various system components

A

Isolating the fault to a component

94
Q

Once the fault can be traced to a specific component or components, an attempt should be made to determine the cause of the failure

A

Failure analysis

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