Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Airframe > Sheetmetal & Non-Metallic Structures > Flashcards

Sheetmetal & Non-Metallic Structures Flashcards

0
Q

Example of a self-plugging rivet;

A

Cherry lock, cherrymax or Huck

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

What is done with the stem of a friction lock rivet?

A

Trimmed flush with head.

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

What tool is used to install Cherrylock rivets?

A

Hand or air puller.

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

A proper rivet shop head is;

A 
Width = 1 1/2 diameter of rivet shank
Height = 1/2 diameter of rivet shank
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is bonded honeycomb construction?

A

Laminar (two metal sides bonded to honeycomb).

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

What materials are used in bonded honeycomb?

A

Stainless, titanium, magnesium, plywood, glass, nylon and cotton cloth, aluminum, Kevlar, carbon, steel, paper

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

What causes the delaminating of honeycomb?

A

Sonic vibrations, moisture, entrapped water, manual flaw.

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

What is potting compound used for?

A

Fill holes in honeycomb (1” max)

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

What kind of repair can be made to a small damage of the core material and one face sheet of a piece of aluminum alloy honeycomb structure?

A

A potted compound repair.

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

What is done with the damaged area of honeycomb?

A

Must be removed.

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

What is (and what causes) crazing?

A

Tiny hair-like cracks that may not extend all of the way to the surface. Crazing is caused by stresses, improper handling, or chemical fumes (Ex; harmful solvents).

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

How do you drill plexiglas?

A

Brace with wood, and feed drill slowly.

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

How do you grind the point of a twist drill that is to be used for drilling transparent acrylic material?

A

The cutting edge should be dubbed off to a zero rake angle, and the included angle of the tip should be ground to 140 degrees.

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

Calculations made when bending sheet metal include;

A

Bend allowance and setback.

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

What must be done where two bends intersect?

A

Relief holes drilled.

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

What type of weathering damage may be found on aluminum aircraft?

A

Corrosion.

16
Q

Methods of forming sheetmetal include;

A

Shrinking, stretching, bumping, crimping, and folding.

17
Q

What is (and what factors affect) setback?

A

The distance the jaws of a brake must be set back from the mold line to form a bend. Factors of setback are bend radius and material thickness.

18
Q

The purpose of lightening holes is to?

A

Reduce weight.

19
Q

What is meant by a joggle in a piece of sheetmetal?

A

A joggle is a small offset near the edge of a piece of sheet metal that allows the sheet to overlap another piece of metal.

20
Q

How long should a rivet be to join two pieces of sheet metal?

A

Combined thickness of the metal sheets plus 1-1/2 times the rivet shank diameter.

21
Q

The proper material for a given repair is;

***

A

Same as the original.

***

22
Q

Single row spacing and edge distance of protruding head rivets is?

A

Edge distance = 2D

Spacing = 3D

23
Q 
Describe rivet head markings;
1100 - 
2017 - 
2117 - 
2024 - 
5056 - 
7075 -
A 
1100 - Plain
2017 - Raised dot
2117 - Recessed dot
2024 - Raised double dash
5056 - Raised cross
7075 - Three raised dashes
24
Q

Types of Alloys are?
1xx - 4xx - 7xx -
2xx - 5xx - 8xx -
3xx - 6xx - 9xx -

A 
1xx - Aluminum
2xx - Copper
3xx - Manganese
4xx - Silicon
5xx - Magnesium
6xx - Magnesium & Silicon
7xx - Zinc
8xx - Other
9xx - unused series
25
Q

What determines whether a piece of sheet metal should be dimpled or countersunk when installing flush rivets?

A

The thickness of the sheet. Countersinking should only be done when the thickness of the sheet is greater than the thickness of the rivet head.

26
Q

Most common rivet failure is?

A

Shear loading.

27
Q

Should a riveted joint fail in shear or in bearing?

A

It should fail in shear. The rivets should shear before the sheet tears at the rivet holes.

28
Q

Replacing a 2024 w/ 2117?

A

For 5/32 or use next larger size of 2117.

29
Q

Bolts w/ triangle on head;

Bolts w/ dash on head;

A 
Triangle = close tolerance bolt
Dash = Corrosion resistant bolt

Airframe (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions