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Basic Airframes > Chapter 3 > Flashcards

Chapter 3 Flashcards

1
Q

Name two types of undercarriage

A

Skidded

Wheeled

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2
Q

What are the requirements of an undercarriage?

A 
Support the weight & shock absorption
Lightness
Strength
Flexibility
Ground handling
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3
Q

Landing loads

A

Initial impact
Undercarriage reacts - flexes
Recoil - springs back

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4
Q

How is a skidded undercarriage maintained?

A 
Check the following:
Surface finish (anti slip)
Corrosion
Security of attachment
Shoe wear
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5
Q

Name the parts of a wheeled undercarriage

A

Oleo unit
Brake unit
Wheel
Support tubes

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6
Q

How does a shock absorber work?

A

The piston compresses the gas, oil slowly seeps through the orrofice because oil cannot be compressed, this dampens the shock and piston recoils slowly

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7
Q

What is the correct name for a shock absorber?

A

Oleo pneumatic shock absorber

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8
Q

Maintenance of the oleo pneumatic shock absorber

A 
Exam for all leaks
Check for corriosion & damage
Check for abnormal extension
Ensure correct gas pressure
Clean exposed portion with hydraulic oil
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9
Q

What are the components of an aircraft wheel?

A

Wheel
Axel
Bearings - roller type to take loads
Huh - bearings, tyre, mounts axel, tubes

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10
Q

What considerations should be taken for an aircraft wheel?

A 
Light weight
Brake unit accommodation
Dissipate heat from breaking
Minimum size
Easy to replace
Good fatigue resistance
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11
Q

Name 6 tyre faults

A 
Wet breaking
Shoulder wear
Bulge
Severe cuts
Dry breaking
Chunking
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12
Q

What is the process of initial tyre inflation

A

Remove valve
Place wheel on safety cage, fit air supply to valve and lock cage
Inflate tyre until bead sits against hub rim
Deflate tyre, fit valve core and inflate slowly
Leave 30mins
Remove airline, fit cover

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Basic Airframes (4 decks)

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