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Aerospace Propulsion Journeyman CDC vol 3 > unit 2 > Flashcards

unit 2 Flashcards

1
Q

When classified as to structure, which of the following is not a type of an oil pump?

  • Gear
  • Gerotor
  • Rotogear
  • Sliding vane
A

Rotogear

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2
Q

Which type of oil pump consists of a gear and rotor within a housing?

A

Gerotor

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3
Q

One micron is a metric linear measurement that is equal to

A

1/25,000 inch

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4
Q

Chip detectors have an electrical connection for making which type of check?

A

Continuity

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5
Q

Which type of valve permits oil flow in only one direction?

A

Check

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6
Q

Which type of oil cooler operates on the same principle as a radiator in an automobile?

A

Air/Oil

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7
Q

The purpose of an oil-temperature control valve used with air/oil coolers is to

A

direct oil around and through the cooler

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8
Q

What type of oil seal has soft metal as its basic composition and allows a small amount of airflow to prevent oil seepage?

A

Labyrinth

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9
Q

Use extreme care when working with labyrinth seals because of their

A

soft metal construction; these seals can be damaged easily.

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10
Q

When an engine is not operating, static preload for a carbon oil seal is provided by

A

spring pressure

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11
Q

Carbon seals should be cleaned by soaking them in clean, warm

A

engine lubricating oil for 30 minutes

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12
Q

The F100-PW-100 engine oil pressure varies with N2, engine inlet oil temperature, and

A

oil nozzle condition

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13
Q

What term is used to indicate that air is being mixed with the oil in the oil pump to create pockets of air?

A

Aeration

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14
Q

The number 1, 4, and 5 bearing compartments are capped on the F100-PW-100 engine oil system. which oil subsystem (or subsystems) do these compartments breathe through?

A

Scavenge only

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15
Q

Which type of oil system stores the oil in a tank fitted to the side of the engine?

A

Dry sump

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16
Q

Which type of oil system design places the oil cooler in the pressure subsystem?

A

Hot tank

17
Q

Which type of oil tank design do most fighter aircraft engines incorporate to help with weigh savings?

A

Hot tank

18
Q

On an F100 engine, the breather pressurizing valve is internally mounted in the…

A

Gearbox

19
Q

If the red button on an F100-PW-220 engine oil filter pops out and remains extended, the…

A

design pressure differential has been exceeded

20
Q

On a F100-PW-220 engine, the air/oil coolers are mounted on the fan duct and use…

A

secondary fan airflow as coolant

21
Q

On an F100-PW-220 engine, what component permits oil to bypass the oil filter during cold weather starts?

A

Filter assembly bypass valve

22
Q

On an F100-PW-220 engine which bearing compartments drain into the gearbox by the tower shaft cavity?

A

2 and 3

23
Q

How does the AFTLA obtain oil samples for analysis?

A

Automatically from the manufacturer

24
Q

The hazardous property of modern jet engine oil the journeyman must be aware of is

A

corrosiveness

25
Q

Which action concerning open oil containers is correct?

  • Dispose of any portion not immediately used
  • Store remaining portion immediately after use
  • Dispose of any portion not used within 60 days
  • Store remaining portion in clearly marked containers
A

Dispose of any portion not immediately used

26
Q

Through the use of spectrometric oil analysis, aircraft will have a higher in-commission rate because there will be…..

A

less unnecessary maintenance

27
Q

For bases that do not have an OAP laboratory, who designates the facility to which oil samples are sent?

A

Program manager

28
Q

Who is responsible for ensuring the OAP operates properly

A

Project monitor

29
Q

What are microscopic metallic particles in the oil system called?

A

Wear metals

30
Q

Increased friction between moving parts in the oil system….

A

accelerates the rate of wear, increasing the production of wear metal particles

31
Q

During an OAP sample collection, using your mouth to draw oil up into the plastic tube could result in….

A

paralysis or death

32
Q

Before taking an oil sample from a drain, drain enough fluid into a container in order to…

A

drain off water and sludge

33
Q

oil sampling intervals should not vary by more than….

A

10%

34
Q

The SEM/EDX analysis process differs from conventional oil analysis in that the SEM/EDX….

A

particles must be oil free fro analysis to take place.

Aerospace Propulsion Journeyman CDC vol 3 (5 decks)

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