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Instrument Systems > Instrument Systems > Flashcards

Instrument Systems Flashcards

1
Q

What is the minimum instruments required by CFR 91.205

A

Tachometer for each engine
Coolant temp gauge for liquid cooled
Oil temp gauge for air cooled
Manifold pressure gauge for each altitude engine

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2
Q

What are the three types of pressures

A

Absolute
Gage
Differential

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3
Q

What does the oil pressure use to indicate

A

Gage pressure
Bourdon tube

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4
Q

What is used to measure oil temp

A

Bourdon tube
Capillary tube

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5
Q

How to measure fuel pressure

A

Capsule type measures low gage pressure such as fuel pressure

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6
Q

What are the two types of temp measuring devices

A

Ratiometer Instrument
Thermocouple instrument

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7
Q

What are the two wires that are connected together for the thermocoupling

A

Chromel lead
Alumel lead
Hot junction
Cold junction

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8
Q

What are the two types of tachometer

A

Mechanical
Electrical

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9
Q

What does the mechanical tachometer use

A

Drive cable
Rotating magnet
Hairspring
Dial
Pointer

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10
Q

What is a green arc mean

A

Normal operating range

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11
Q

What does yellow arc mean

A

Caution range

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12
Q

What does white arc mean

A

Special operating range

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13
Q

What does red arc mean

A

Prohibited range

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14
Q

What does a red radial line mean

A

Do not exceed

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15
Q

What does a blue radial line mean

A

Special operating condition

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16
Q

What does a red triangle, dot or diamond mean

A

Maximum limit for high transients such as starting

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17
Q

What does a turbine fuel flow indicator use

A

Aircraft electricity to power an impeller to swirl the fuel

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18
Q

What does the fuel flow indicator on a turbine use to measure

A

Fuel mass

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19
Q

What does the recip engine use for fuel flow

A

Fuel pressure

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20
Q

What does the manifold pressure gauge do

A

Indicate absolute pressure in the intake manifold

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21
Q

What common type of electrically operated oil temp gauge utilize

A

Wheatstone bridge
Ratiometer

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22
Q

What type of lead is in a recip thermocoupling

A

Bayonet type

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23
Q

What unit sends the information of engine speed to the tachometer in an electrical system

A

Three phase ac generator

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24
Q

What does the axial flow compressor turbine use to mesure thrust

A

EPR

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25
Q

What is the borudon tube used for

A

To measure high pressures such as hydraulic or fuel pressures

26
Q

What does a glass cockpit use

A

LCD
CRT
MFD

27
Q

What is BITE

A

Built in test equipment

28
Q

What type of system do the electronic devices use

A

Binary system

29
Q

What does a digital computer contain

A

CPU
Memory
Input out put devices

30
Q

What does the computerized fuel system give the pilots

A

Pounds or gallons of fuel on board
Fuel flow in gallons per hour
Fuel time remaining
Number or gallons of fuel used so far

31
Q

What does EICAS stand for

A

Engine indication and crew altering system

32
Q

What are the classes of fires

A

Class A
Class B
Class C
Class D

33
Q

What is a class A fire

A

Has fuels that are solid combustibles

34
Q

What is a Class B fire

A

Fuels that are combustible liquids

35
Q

What is a class C fire

A

Involving electrical equipment

36
Q

What is a Class D fire

A

Fires that involve metals

37
Q

What is a class A fire zone

A

Large volumes of air flowing past regular arranged objects

38
Q

What is a Class B fire zone

A

Large volumes of air flowing over aerodynamic clean objects

39
Q

What is a Class C fire zone

A

Small air flow

40
Q

What is a Class D fire zone

A

Have little to no air running through them

41
Q

What is a Class X fire zone

A

Large volumes of air flow at an irregular rate

42
Q

What are the requirements for fire detection and warning systems

A

Must have a separate fire detection system for each engine with light and audible sound
No false readings
Can’t be damaged
Must operate off a aircraft electrical system

43
Q

What are the two types of detectors

A

Fire
Overheat

44
Q

What is a thermoswitch

A

Uses metal to expand when there is a presents of fire. It is also a spot detector

45
Q

What are the two types of thermoswitch detectors

A

Single loop
Double loop

46
Q

What does a thermocoupling do

A

Two dissimilar metal wires are welded together and sends a loop of electricity between the hot junction and cold junction

47
Q

Thermocoupling sends the voltage to the warning light how

A

By sending voltage through the measuring junctions and the temp difference between the junctions allowing current to flow

48
Q

What detects overheat condition as well as fire protection

A

Continuous loop fire and overheat detection system

49
Q

What does a thermistor type continuous loop system do

A

Salt melts and allows the wire to ground sending voltage through the system

50
Q

What is the single thermistor type continuous loop referred to as

A

Fenwall system

51
Q

What is the two conductor thermistor type continuous loop called

A

Kiddie system

52
Q

How do pneumatic type continuous loop systems work

A

Use a stainless steel tube that contains a gas that absorbed gas when cold and releases when heated

53
Q

What are the types of pneumatic type of continuous loop

A

Lindberg system
Systron dinner

54
Q

What are the types of fire extinguishers agents

A

Carbon dioxide
Liquid nitrogen
Halogenated hydrocarbons

55
Q

How do you test a thermocoupling

A

Press and hold the test button for the specific time period and allows the test junction to heat up causing energy to flow through the wires

56
Q

What can the kidde system do that the fenwall cannot

A

It can detect overheat conditions as well as hotspots

57
Q

How is the systron Donnor system differ from the lindberg system

A

It has a mixture of two gases and a titanium center wire

58
Q

What does the integrity switch do for the systron donnor system

A

This is for when the glass breaks if you try and test the system it will not test

59
Q

Where are CO2 discharge bottles usually connected to

A

Recip engine compartments

60
Q

Where are HRD systems usually located

A

On most modern jet transport aircraft

61
Q

What do CO2 bottles have to let them know whether a bottle has discharged or not

A

Indicator disk

Instrument Systems (1 decks)

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