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Aircraft Instruments Test 2 Review > Lesson 16: Fuel System Indication > Flashcards

Lesson 16: Fuel System Indication Flashcards

1
Q

What are the 3 types of FUEL QUANTITY INDICATING SYSTEMS?

A

Mechanical
DC Electrical
Capacitance

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2
Q

What are the 2 types of FUEL SYSTEM MONITORING INSTRUMENTS?

A

Fuel Pressure Indicator

Fuel Flow Gauge

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3
Q

What are some types of Mechanical Indicators?

A

Wire and Float
Measuring Stick
Magnetic Coupling Dial

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4
Q

When do we use MEASURING STICKS?

A

Maintenance and Troubleshooting

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5
Q

This type of indicator has a permanent magnet coupled to a horseshoe magnet

A

Magnetic Couple Dial

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6
Q

Why would we use a DC ELECTRICAL indicator?

A

When direct connection between float and indicator is impossible

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7
Q

How does a DC ELECTRICAL indicator work?

A

Mechanical float motion to DC drives indicator

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8
Q

How do DC Electrical indicators minimize errors caused by variations in system voltage?

A

Ratiometer type

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9
Q

Electrical indicators consist of what?

A

Indicator in cockpit

Transmitter/Sender in tank

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10
Q

This indicator consists of a FLOAT and LEVER that operates a POTENTIOMETER

A

DC Electrical Indicator

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11
Q

What does the DC Electrical indicator tell us?

A

Only fuel volume

Not compensated for fuel density

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12
Q

How does the RATIOMETER operate?

A

Ratio of potentiometer and battery

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13
Q

Which indicator has no moving parts and used for most modern aircraft?

A

Capacitance type

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14
Q

The capacitance probe measures what?

A

Fuel quantity and density

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15
Q

This component are insulated by bushings, parallel and vertically mounted and extend from bottom to top

A

Capacitive Probe

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16
Q

Why would we put 2 or more probes in a fuel tank?

A

Average during aircraft climb/descent

17
Q

Capacitance varies with what?

A

Fuel Density

18
Q

This component is always fully immersed, and is more accurate on the useful energy content of the fuel

A

Compensator

19
Q

What does a fuel flow indicator do?

A

Instant rate of flow to engine

20
Q

Where does the fuel flow indicator measure?

A

Fuel intake of each engine

POUNDS per HOUR

21
Q

A bourdon tube is used to measure fuel PRESSURE at distribution manifold for which aircraft?

A

Fuel Injected Piston

22
Q

The Vane Type Flow Sensor gauge indicates what?

A

Volumetric flow rate in GALS/HR

23
Q

What do we use for turbine engines?

A

MASS FUEL FLOWMETER

24
Q

How does a MASS FLOWMETER operate?

A

Impeller rotates fuel, rotates turbine, more fuel more torque, synchro transmits to indicator

Aircraft Instruments Test 2 Review (19 decks)

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