AIRFRAME STRUCTURES

Question 1

Which part(s) of a semi monocoque fuselage prevent(s) tension and compression from bending the fuselage?

Answer 1

Longerons and Stringers

Question 2

Longitudinal (fore and aft) structural members of a semi monocoque fuselage are called?

Answer 2

Longerons and stringers

Question 3

The general rule for finding the proper rivet diameter is:

Answer 3

Three times the thickness of the thickest sheet

Question 4

The shop head of a rivet should be:

Answer 4

One and one-half times the diameter of the rivet shank

Question 5

What is the minimum edge distance for aircraft rivets?

Answer 5

Two times the diameter of the rivet shank

Question 6

The aluminum code number 1100 identifies what type of aluminum?

Answer 6

99 percent commercially pure aluminum

Question 7

Most rivets used in aircraft construction have

Answer 7

Dimples

Question 8

Ms20425Ad-6-5 indicates a countersunk rivet which has

Answer 8

An overall length of 5/16 inch

Question 9

Which rivet is used for riveting magnesium alloy structures?

Answer 9

5056

Question 10

Which rivet is used for riveting nickel steel alloys?

Answer 10

Monel

Question 11

The I-beam wooden spar is routed to

Answer 11

Reduced Weight

Question 12

The strength of a well-designed and properly prepared wood splice joint is provided by the

Answer 12

Glue

Question 13

Laminated wood spars may be substituted for solid rectangular wood spars

Answer 13

If the same quality wood is used in both

Question 14

Laminated wood is sometimes used in the construction of highly stressed aircraft components. This wood can be identified by its

Answer 14

parallel grain construction

Question 15

The strength classification of fabrics used in aircraft concerning is based on

Answer 15

Tensile Strength

Question 16

(1) Machine-sewn seam in aircraft covering fabrics

(2) a plain lapped seam is cover permissible

Answer 16

only no.1 is true

Question 17

How many fabric thickness will be found in French-felt seam?

Answer 17

Four

Question 18

Which property applied finish top coat is the most durable and chemical resistant?

Answer 18

polyurethane

Question 19

A correct way of using acetone is

Answer 19

Remove grease from fabric

Question 20

What is the minimum edge distance for aircraft rivets?

Answer 20

Two times the diameter of the rivet shank

Question 21

When drilling stainless steel the drill used should have an included angle of

Answer 21

140 degree and turn at a low speed

Question 22

Clod aluminum alloys are used in aircraft because they

Answer 22

are less subject to corrosion than uncoated aluminum

Question 23

The monocoque fuselage relies largely on the strength at

Answer 23

skin or covering

Question 24

Which part(s) of a semi-monocoque fuselage prevent tension and compression from bending the fuselage?

Answer 24

longerons and stringers

Question 25

What is the purpose of refrigerating 2017 and 2024 aluminum alloy rivets after heat treatment?

Answer 25

to retard age hardening

Question 26

Most rivets used in aircraft construction have

Answer 26

Dimples

Question 27

Which rivet may be used as received without further treatments?

Answer 27

2117- 13

Question 28

Mild steel rivets are used for riveting

Answer 28

steel parts

Question 29

A piece of sheet metals is bent to a certain radius. The curvature of the bend is referred to as the

Answer 29

bend radius

Question 30

The aluminum alloys used in aircraft construction are usually hardened by which method?

Answer 30

heat treatment