2.a

Question 1

What are longerons?

Answer 1

Main longitudinal member that carry bending loads

Question 2

What are stringers?

Answer 2

Smaller and lighter than a longeron. They act as stiffeners and assist sheet to carry the loads

Question 3

What are frames?

Answer 3

Vertical circular members

Question 4

How is the frame and stringer attached together?

Answer 4

Clips/ cleats

Question 5

What is a doubler?

Answer 5

A metal piece attach to the inner side of the skin to add extra strength

Question 6

Where may doublers be found?

Answer 6

Cargo and passenger doors

Question 7

What can doublers also be used for?

Answer 7

Crack stoppers placed 90 degrees to predicted path of crack propagation

Question 8

What is a strut?

Answer 8

A member that can withstand compressive forces

Question 9

What structural components are designed to carry tension forces?

Answer 9

Ties

Question 10

Floor structures are attached to what?

Answer 10

Floor beams

Question 11

The floor beams also carry what?

Answer 11

Tension forces of pressurisation and are considered part of the primary structure

Question 12

What is done to floor beams in lav/ galley areas?

Answer 12

Sealed to stop corrsion

Question 13

What are the span wise members of a wing?

Answer 13

Spars

Question 14

What are the chord wise members of a wing?

Answer 14

Ribs

Question 15

What direction do stringers run in the wing?

Answer 15

Spanwise

Question 16

The box section allows the wing to have what?

Answer 16

Fuel tanks

Question 17

What are the tree types of fuselage construction?

Answer 17

• Truss-type
• Monocoque
• Semi-monocoque

Question 18

What is a truss type?

Answer 18

Frame work takes load

Question 19

What takes the load on a monocoque fuselage?

Answer 19

The aircraft skin as it is thicker

Question 20

What takes the load on a semi-monocoque structure?

Answer 20

Skin and supporting members

Question 21

What is the advantage to a semi-monocoque structure?

Answer 21

Can withstand high damage without failure

Question 22

How can the skin of the aircraft be attached?

Answer 22

Riveting or bonding

Question 23

What should the skin be treated with to stop premature failure?

Answer 23

Anti-corrosion protection

Question 24

How are wings fitted to the aircraft?

Answer 24

Connected to a centre wing box which is an integrated part of aircraft fuselage/ structure

Question 25

How is the wing box supported?

Answer 25

Heavy frames and keel beams

Question 26

What is the method of skin protection?

Answer 26

• Pre treat
• Primer
• Top coat

Question 27

What direction do keel beams run?

Answer 27

Longitudinal

Question 28

What areas don’t have paint protection?

Answer 28

• Leading edge wings and engine
• Pylon
• Scuff plates
• Equipment