Windows and Lenses Flashcards

1
Q

Plastics are divided into 2 main categories: _______________ and _________________

A

Thermoplastics and Thermosetting

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

____________ are plastics that can be softened by heat and dissolved in various organic solvents

A

Thermoplastics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Thermoplastics can be divided into three categories…:

A

Cellulose Acetate Plastic

Acrylic Plastice

Polycarbonate Plastics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

_____________ _____________ _____________ is not commonly used anymore and expands and contracts with heat **Cracks easily**

A

Cellulose Acetate Plastic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

___________ _________ are brittle but strong and cheap

A

Acrylic Plastics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the three kinds of thermoplastics

A

Cellulose Acetate Plastic

Acrylic Plastic

Polycarbonate Plastics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

_________ ________ _________ is not commonly used anymore, expands/contracts easily with heat, tints over time

A

Cellulose Acetate Plastic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

_______ ________ are brittle but strong, and cheap

A

Acrylic Plastics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

______________ __________ can also be softened by heat and disolved in various organic solvents. Can be bent cold

A

Polycarbonate plastic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

________________ ___________ Do not soften very much under heat. Materials are liquid prior to their final form. Once formed and cured, will keep shape

A

Thermosetting Plastics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

______________ are used in aircraft windows

A

Thermoplastics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

When Storing sheets of plastic:

A

Store in a cool/dry location

Store on their edge, at 10o angle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

ATA___ Is Windows

A

ATA56

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

ATA__ Airworthiness Limitations

A

ATA04

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When assessing damage to windows, what is the most precise tool?

A

Optical Micrometer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

_________ is a fine web-like pattern of small scratches, often only detectable by light

A

Crazing

17
Q

How is crazing caused?

A

By allowing some passage of moisture, sulphides, atmospheric contamination

18
Q

What are the steps to cleaning windows?

A

1) Use water & your hand/fingernail
2) Use commercial window cleanser DON’T USE AMMONIA
3) Acrylic window polish

19
Q

Can you use metal/wood drill bits to drill plastic windows?

A

No

20
Q

What are the conditions for drilling windows?

A

Drill bit tip angle must be 60-90o

Cutting edge must be at 0-4o

Siurface behind cutting edge should be grinded so no friction builds up

21
Q

Should you drill holes bigger or smaller than fasteners?

A

All holes should be at least 1/3 bigger than the fastener

22
Q

What is this?

A

Step Drill

23
Q

___________ __________ is caused by working one small spot and not blending the damage removal over a large enough area

A

Localized Distortion

24
Q

When cutting acrylic plastics, what should you not use?

A

Reciprocating saw

25
Q

When trimming acrylic plastics, the fine detail work is best accomplished using a _____ _________

A

Die Grinder

26
Q

In the case of a crack, all ends of the crack can be ______ ________ with a #30 Drill bit (1/8”). (Unpressurized aircraft)

A

Stop Drilled

27
Q

Generally, the max amount of stop drills is _____

A

Two

28
Q

To strengthen stop drilled crack, drill #40 holes, and lace holes with ________ ____________ . (Non-Pressurized Aircraft)

A

Brass Lockwire

29
Q

More permanent repairs can be made to acrylic plastic using a _____________ __________ such as PS-30

A

Polymerizable cement