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(Airframes)Cabin Atmosphere Ctrl Sys Airframe and Rain Ctrl Ice and > Test Review > Flashcards

Test Review Flashcards

1
Q

What is an advantage of a wet style vacuum pump in a pneumatic deicing system?

A

More durable

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2
Q

What is required when using exhaust shroud heating systems

A

Co monitor in the cockpit

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3
Q

How is Freon measured into a system?

A

Weight

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4
Q

What must you do before servicing freon system that has leaked out completely

A

Must be Evacuated

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5
Q

What are the pump vanes made of in a dry pump pneumatic de-icing system

A

Carbon

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6
Q

What is the most common type of heater in single-engine light aircraft

A

Exhaust shroud

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7
Q

What color is Type I de-icing fluid

A

Orange

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8
Q

A hydrostatic test pressure checks a cylinder to what pressure

A

5-3

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9
Q

What two components divide the high side from low side in a vapor cycle air conditioning system

A

Compressor
expansion valve

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10
Q

What kind of ice is formed from small droplets of water, is light weight and is easily removed

A

Rime ice

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11
Q

What may be a result of a negative pressure situation

A

Structural damage

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12
Q

What freon system utilized quick disconnect type couplings for servicing

A

R134

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13
Q

How is an oxygen candle shut off

A

Not possible once ignited

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14
Q

What do you use to thaw a frozen engine compressor

A

Hot air

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15
Q

How is air moved through the air cycle primary heat exchanger when on the ground

A

Fan

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16
Q

What engages and disengages a freon compressor from turning

A

Electromagnetic clutch

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17
Q

How do you check if your turbine engine compressor is frozen

A

Manually try to spin the engine fan

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18
Q

How is heat output regulated in a combustion heater system

A

Thermostat opens/closes fuel solenoid valve

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19
Q

The boiling point is dependent upon what

A

Pressure
Green deicing fluid
Type 4

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20
Q

What are low pressure oxygen lines made of

A

aluminum

21
Q

Why is there a conductive neoprene outer layer on wing pneumatic de-icing boots

A

Dissipate static electricity

22
Q

If all freon is lost, service the system to ___ PSI with freon and check for leaks

A

50

23
Q

The maximum cabin differential pressure of an aircraft is dictated by what

A

Aircraft design limits

24
Q

What kind of ice is formed from large drops of water and forms heavy sheets that are difficult to remove

A

Clear ice

25
Q

What is one way to tell if a vapor cycle air conditioning system does not leak

A

Holds a vacuum

26
Q

What is the job of the compressor in a vapor cycle air conditioning system

A

Turn low pressure freon vapor into high pressure freon vapor

27
Q

What type of heat energy raises actual substance temperature

A

Sensible heat energy

28
Q

What color are pressurized oxygen bottles used in aviation

A

Green

29
Q

Conductive tapes, blankets and films are what type of anti-ice systems

A

Thermal electric

30
Q

All pressurization systems have what feature for override

A

Manual mode

31
Q

What can be an issue with pressurized cabin aircraft

A

Metal fatigue

32
Q

What is the effect of low doses of carbon monoxide over long periods of time

A

Death

33
Q

In what component of a vapor cycle air condition system does freon convert from a vapor to a liquid?

A

Condenser

34
Q

Where is lubricating oil stored and serviced in a vapor cycle air conditioning system

A

Crank case compressor

35
Q

What happens when you combine petroleum with oxygen

A

Creates heat

36
Q

What is NOT a cause of icing on the evaporator external surface of a vapor cycle air conditioning system

A

Low freon

37
Q

Soapy water can be used to detect from leaks….

A

True

38
Q

What holds a pneumatic de-icing boot tight against the wing surface

A

Vacuum

39
Q

A compound gauge on a manifold gauge set will measure what

A

Pressure and vacuum

40
Q

What is a typically desirable rate-of-change for cabin pressure

A

300 to 500 ft/min

41
Q

What mode of cabin pressurization maintains cabin pressure at a set differential psi

A

Constant differential pressure mode

42
Q

Temperatures below what is required to change freon from a vapor to a liquid is called what

A

Subcooling

43
Q

What regulates bleed air into the air cycle system

A

Pack valve

44
Q

What uses the venturi effect to aid air volume into the cabin for pressurization

A

Jet pump multiplier

45
Q

How do the ratios of gasses change with elevation

A

No change

46
Q

What is a disadvantage of using a supercharger or turbocharger for cabin pressurization

A

Takes power from the engine

47
Q

How does a chemical deice system work?

A

Lowers freeze point of water

48
Q

In what type of aircraft would you find a wet type vacuum pump for de-icing

A

Older

49
Q

When would a system evacuation not be required during servicing

A

If the system pressure never dropped below atmospheric pressure

(Airframes)Cabin Atmosphere Ctrl Sys Airframe and Rain Ctrl Ice and (7 decks)

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