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Airframe > Ice/Rain/Waste Systems > Flashcards

Ice/Rain/Waste Systems Flashcards

1
Q

What must all aircraft that operate in weather conditions where ice is likely to form be provided with?

A

Ice protection

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2
Q

Ice increases _______ and reduces _______

A

Increases drag
Reduces lift

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3
Q

Ice hampers instrument readings and causes what?

A

Vibration

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4
Q

What does an anti-icing system do?

A

Prevents the formation of ice

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5
Q

What does a deicing system do?

A

Removes ice on the aircraft

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6
Q

What are the deicer boots coated with to dissipate static?

A

Neoprene

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7
Q

What are on the back side of the deicer boots?

A

Air connections

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8
Q

How are deicer boots driven?

A

Pneumatically

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9
Q

What controls the inflation sequence for the deicer boots by directing the vacuum?

A

The Distributor valve

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10
Q

How is airflow disruption minimized when inflating deicer boots?

A

Boots are inflated alternately

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11
Q

What holds the boots deflated when the system is off, by regulating the vacuum?

A

A suction relief valve

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12
Q

What is the purpose of the oil separator in a wet type vacuum pump?

A

To protect the boots from oil deterioration by removing the oil from the air

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13
Q

How do you remove any grease or oil from a deicer boot?

A

With Naptha or Soap & Water

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14
Q

Where would you find deicer boot removal procedures?

A

The Maintenance Manual

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15
Q

How does the Wing Anti-Ice (WAI) System work?

A

Uses heated air flowing through passages in the wing, or electric resistance heat elements in a “blanket”

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16
Q

The WAI system is an Anti-ice system. TRUE or FALSE?

A

TRUE

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17
Q

What are the heat sources for thermal anti-icing pneumatic systems?

A

Combustion heaters, Bleed air, or Augmenter tubes

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18
Q

What components are heated with a Thermal Electric Boot System?

A

Wing leading edges, or leading-edge slats, horizontal/vertical stabilizer leading edges, and some turbine and turboprop inlets

19
Q

How are many propellers deiced?

A

By an electrically heated boot on each blade

20
Q

With the boot firmly cemented in place, it receives current from what?

A

A slip ring and brush assembly on the spinner bulkhead

21
Q

How is the 10 PSI variable output for propeller fluid anti-icing controlled?

A

By a Rheostat

22
Q

What are the flow rate ranges for propeller fluid anti-icing?

A

Less than 1 quart to more than 1 gallon per hour

23
Q

How is anti-icing fluid ejected from the slinger ring?

A

Centrifugal Force

24
Q

How are the heaters controlled for probe anti-icing?

A

Switches

25
Q

How can proper operation of the pitot/static tube heat be verified?

A

With an Ammeter

26
Q

Carburetor icing is most severe at temperatures between ___-___degrees F.

A

30 - 40

27
Q

Carburetor icing can occur in warm weather with no visible moisture. TRUE or FALSE?

A

TRUE

28
Q

What are 3 methods of windshield ice control?

A

-Electric heating element in windshield
-Circulating heated air
-Spraying fluid on the windshield

29
Q

Where are the heated sensors located for the windshield heating?

A

Imbedded in the glass

30
Q

What are 3 things to check for when inspecting the windshield heating?

A

Delamanation
Scratching
Arcing

31
Q

When is spraying the windshield normally used?

A

To clear the windshield prior to landing

32
Q

What are 3 ways that windshield wiper systems are operated?

A

Electrically
Hydraulically
Pneumatically

33
Q

How does the pneumatic rain removal system work?

A

Uses high velocity compressor bleed air to prevent rain from hitting the windshield

34
Q

What 2 fluids are used to remove frost?

A

Ethylene Glycol
&
Isopropyl Alcohol

35
Q

How is ice removed from turbine engines?

A

Hot air

36
Q

How can an operational check of the deicing system be made?

A

By operating the aircraft systems per operational instruction

37
Q

Deicing fluid is NONflammable.
TRUE or FALSE?

A

FALSE

38
Q

What is used to clean and dry heated windshields?

A

Clean with Mild Soap & Water
Dry with Chamois or Absorbent Cotton

39
Q

How are lavatory holding tanks drained?

A

Through a valve that can only be opened by ground personnel

40
Q

Water pipes, where icing conditions are likely to occur, are insulated and heated with what?

A

Electrical tape heaters

41
Q

What controls the amount of current to the heating elements in a windshield?

A

Thermistors

42
Q

What causes arching in electrically heated windshields?

A

A breakdown of the conductive coating

43
Q

What are the two types of ice formations?

A

Rime & Clear/Glaze

Airframe (7 decks)

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