AIRFRAME STRUCTURES 11.2 / 11.3 Flashcards

1
Q

Where are body stations measured from?

A

A point in front of the nose

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

Major zones are divided into sub-manor zones. How are these identified? E.g. Zone 420

A

2nd digit

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

How is the skin reinforced in semi-monocoque airframe construction?

A

Longitudinal members

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

On airbus aircraft, which kind of value has a position right of the aircraft centre line?

A

Negative “Y”

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

What is a body station?

A

A plane passing vertically through the fuselage and measured from a reference point in front of the aircraft

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

What is the primary function of the fuselage frames?

A

To maintain the shape of the fuselage and to carry / distribute shear / tension loads

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

What is one purpose of the dorsal fin?

A

It joins the fin smoothly to the fuselage

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

What is the main function of the passenger door torque tube?

A

To rotate the door to the cocked position

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

What is the purpose of the cockpit sliding windows?

A

To provide the flight crew an emergency exit and give direct vision to the ground

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

What are the main structural components in an aircraft wing?

A

Ribs
Spars
Stringers
Skin

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

What is the mainframe of the wing designed to do?

A

Transmit loads to the fuselage structure

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

How can the front spar of the horizontal stabiliser be accessed?

A

From the front by removing the leading edge

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

Are both horizontal and vertical stabilisers inside or outside the fuselage pressurised area?

A

Outside

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

How is the rudder attached to the aircraft?

A

It is hinged to the training edge of the vertical stabiliser

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

What is the purpose of the fail-safe bolt on control surface hinges?

A

To provide a safety method of maintaining structural integrity should one of the internal parts of the bolt be damaged

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

Which loads are transmitted by the pylon bearings?

A

Lateral and longitudinal loads between the wing and pylon

17
Q

What is the purpose of the wing to nacelle fairings?

A

To provide an aerodynamic profile to reduce drag

18
Q

How is an engine pylon attached to the wing?

A

2 links at the front and spigot to the rear

19
Q

What is the purpose of the vent hole in the inner part of a cabin window?

A

To equalise the pressure between the 2 panels and the cabin

20
Q

How are cockpit fixed windows and windscreens installed?

A

Externally onto the cockpit frame structure

21
Q

What is the function of a fuselage stringer?

A

It gives shape to the fuselage shell and can carry bending, shear, torsion, and cabin pressure loads

22
Q

Which wing components are normally used to attach the leading and trailing edges?

A

Vertical stiffeners attaching wing spar webs

23
Q

Which loads are mainly carried to the fuselage structure by wing upper skin panels?

A

Compression

24
Q

What is the main purpose of the fan cowl support beam?

A

It supports the fan cowl and transmits the loads to the torque box

25
Q

Which components go together to form a nacelle strut assembly?

A

Frames
External skins

26
Q

When do aircraft escape slides deploy?

A

When the door is opened, and in the armed position

27
Q

How can flight deck seats be secured to the aircraft?

A

They are mounted on rails on the flight deck floor

28
Q

How are the galley trolleys secured during takeoff and landing?

A

They are put into special storage positions in the galley and locked in place

29
Q

What is the purpose of the “ball-mat”

A

To allow cargo to run forward/aft and side to side during loading

30
Q

What is the purpose of the inertia reel?

A

To lock the shoulder straps in the event of rapid deceleration (crew seatbelts)

31
Q

How are galleys normally secured to the fuselage?

A

They are engaged in the seat rails at the bottom and attached to links on the structure at the top

32
Q

Which precautions must be taken regarding air-stairs when aircraft is on jacks?

A

They should be supported by a suitable stand when extended