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Aircraft Systems > Aircraft Tires > Flashcards

Aircraft Tires Flashcards

1
Q

fitted with pneumatic tires

A

aircraft wheels

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2
Q

Aircraft wheels are fitted with pneumatic tires which may be ______ or have an _______.

A

tubeless, inner tube

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3
Q

These tires are used on some light aircraft and on older aircraft.

A

tires fitted with inner tubes

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4
Q

Most modern aircraft have this tire fitted.

A

tubeless tires

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5
Q

What are tires usually inflated with?

A

nitrogen

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6
Q

What enables the tires to absorb shocks and supports the weight of the aircraft?

A

nitrogen

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7
Q

What enables the tires to maintain its shape, transmit braking, and provide a wearing surface?

A

tire cover

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8
Q

If a tube is fitted, the tire also _______ the tube and protects it from damage.

A

restrains

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9
Q

Where is tread of the tire situated?

A

crown and shoulder

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10
Q

This allows the tire to be flexible.

A

sidewall

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11
Q

This is seated inside the flange of the wheel.

A

bead

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12
Q

Sections or Regions of a Tire

A

crown, shoulder, sidewall, bead

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13
Q

Two Common Types of Tire

A

radial ply, bias or cross ply

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14
Q

The tire consists of a casing made of plies of _______, _____, or ______ cords.

A

cotton, rayon, nylon

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15
Q

The cords in a tire are not woven but __________ in single layers and held together by a ___________ which prevents cords of adjacent plies from cutting one another as the tire flexes in use.

A

arranged parallel, thin film of rubber

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16
Q

During construction of the tire, the plies are fitted in pairs and set out so that the cords of adjacent plies are at ____ degrees to one another in the case of ____________ tires.

A

90, bias or cross ply

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17
Q

The plies are fitted bead to bead at approximately 90 degrees to the centerline of the tire in _______ tires.

A

radial ply

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18
Q

The tire manufacturer gives each tire a _____.

A

ply rating

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19
Q

A ply rating does not relate directly to the number of plies in the tire but is the ___________ of the tire.

A

index of the strength

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20
Q

Where is the ply rating shown in a tire?

A

sidewall

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21
Q

This holds the tire on its wheel.

A

beads

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22
Q

The beads are made of ________.

A

high tensile wire strands

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23
Q

Each wire strand is coated with _______ compound and is ________ into a coil of the specified diameter for the tire.

A

rubber, spiral-wounded

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24
Q

The _____ are wrapped around the beads and turned out back on to themselves.

A

plies

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25
Q

two narrow plies embedded in thick layers of rubber between the casing and the tread

A

breaker strips

26
Q

absorbs and distributes load shocks and protects the casing from concussion damage

A

breaker strips

27
Q

Breaker strips are two narrow plies embedded in thick layers of rubber between the _____ and the _____.

A

casing, tread

28
Q

What is the most popular tread pattern?

A

ribbed type

29
Q

formed from circumferential grooves around the tire to assist in water dispersion and to help prevent aquaplanning or hydroplanning

A

ribbed type

30
Q

help to improve contact grip between the tread and runway surface

A

grooves

31
Q

molded onto the shoulder of nosewheel tires particularly fitted to aircraft with the engines mounted on the rear fuselage

A

chine or chines

32
Q

rubber extensions designed to direct water away from the engine intakes and so prevent flameouts due to water ingestion

A

chine or chines

33
Q

A nosewheel tire fitted to a _______ installation will have a chine molded onto both sides of the tire.

A

single wheel

34
Q

A nosewheel tire fitted to a ________ installation will have a chine only on the outer edge of each tire.

A

double wheel

35
Q

It is required whether the tire is fitted with a tube or is tubeless.

A

inflation valve

36
Q

In the case of the tire with a tube, the _________ is part of the tube installation.

A

valve form

37
Q

On a tubeless tire, inflation valve is fitted directly onto the wheel rim with a ___________.

A

rubber sealing gasket

38
Q

Each inflation valve is fitted with a ___________.

A

non-return valve

39
Q

The ________ is considered to be a perfect seal, therefore, the inflation valve must always be fitted with the _________.

A

valve core, valve cap

40
Q

prevents dirt from entering the valve

A

valve cap

41
Q

It is important when doing the external check of the aircraft that the valve caps are checked, which are normally colored ________, are fitted.

A

yellow

42
Q

Valve caps will slow down the loss of pressure in the event of a _________.

A

valve failure

43
Q

Four Main Groups of Tire Inflation

A
  • low
  • medium
  • high
  • extra high-pressure
44
Q

These tires are designed to operate at a pressure of 25 to 35 psi.

A

low pressure tires

45
Q

These tires are fitted to aircraft using grass surfaces for takeoff and landing.

A

low pressure tires

46
Q

These tires operate at a pressure of 35 to 70 psi.

A

medium pressure tires

47
Q

These tires are used on grass surfaces or on medium firm surfaces without a consolidated base.

A

medium pressure tires

48
Q

These tires operate at a pressure of 70 to 90 psi.

A

high pressure tires

49
Q

These tires are suitable for concrete runways.

A

high pressure tires and extra high-pressure tires

50
Q

These tires are fitted to most large modern airliners.

A

extra high-pressure tires

51
Q

These tires operate at pressures of over 90 psi with some being inflated to 350 psi.

A

extra high-pressure tires

52
Q

Tires in use must be kept inflated to the correct pressure using nitrogen or other inert gas with _______ oxygen content.

A

less than 5%

53
Q

_________ may move or creep around the wheel.

A

underinflated tires

54
Q

________ will cause other types of failure such as loss of control due to reduced traction and contact with the road surface.

A

overinflated tires

55
Q

It is estimated that _____ of all tire failures can be attributed to incorrect gas pressure.

A

90%

56
Q

Overinflation will cause excessive wear to the ______ of the tires whilst underinflation is the cause of excessive _______ and ______.

A

crown, shoulder wear, creep

57
Q

On some modern aircraft, real-time tire pressures can be displayed on the flight deck like on an A320 _______.

A

Electronic Centralized Aircraft Monitor (ECAM)

58
Q

The manufacturer will set a ____________ to which a tire can be subjected.

A

maximum ground speed

59
Q

A maximum ground speed set by the manufacturer of a tire will be marked on the _____ of the tire.

A

side

60
Q

Why is it important that the maximum ground speed on a tire is not exceeded?

A

possible tread separation may occur

Aircraft Systems (9 decks)

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