11.03 Airframe Structures - Aeroplanes

Question 1

What component reduces the column length of stringers?

Answer 1

Frames

Question 2

What spacing is generally used between frames?

Answer 2

20 inches

Question 3

What loading do stringers support?

Answer 3

• Bending
• Shear
• Torsion
• Pressure

Question 4

At production breaks, how can stringers be connected together?

Answer 4

Stringer splices

Question 5

What shapes of clip can be used to attach stringers to frames?

Answer 5

Angles or T clips (cleats)

Question 6

What loads for the floor beams support?

Answer 6

• Pressure loads
• Loads of seat tracks
• Floor panels

Question 7

What is the purpose of the keel beam?

Answer 7

Supports the wheel well area and wing loads

Question 8

What are the four categories of door?

Answer 8

• Main
• Service
• Cargo
• Emergency

Question 9

Where are the main cargo doors located?

Answer 9

In the lower part of the aircraft

Question 10

What equipment can be found under the lower lining?

Answer 10

• Escape slide

- Survival kit

Question 11

What functions do the door seals fulfil?

Answer 11

Act as pressure and weather seals

Question 12

What is the purpose of the overhead hatch in the cockpit?

Answer 12

Emergency exit for the flight crew

Question 13

When do power assist systems operate on passenger doors?

Answer 13

In an emegency

Question 14

In a door locking mechanism, what is the purpose of the over-centre spring?

Answer 14

It prevents the selector lever being in an intermediate position

Question 15

What position is the door mode selector if the girt bar is engaged?

Answer 15

Armed, auto and flight

Question 16

What is the reason for an emergency power reservoir on passenger doors?

Answer 16

To assist in opening the doors in an emergency

Question 17

What is special about the number two cockpit windows?

Answer 17

There are direct vision windows which can open and slide

Question 18

With regard to doors, which mechanism or component does the safety mechanism operate?

Answer 18

It operates the door lock cams and vent door

Question 19

What must be ensured when you remove a charged door emergency power reservoir?

Answer 19

Ensure it is safe (pinned)

Question 20

What differences are there between the bulk cargo door and the other forward, aft and side cargo doors?

Answer 20

• Bulk cargo door opens inwards and is mechanically operated

- Forward, aft and side doors are electrical or hydraulic and open inwards

Question 21

When the cargo door lever is operated, its movement is first transmitted to the…

Answer 21

Master lock latch mechanism

Question 22

How are the pressurisation loads supported by the door structure?

Answer 22

Pressure stops

Question 23

How does the emergency door slide connect to the cabin floor?

Answer 23

Girt bar

Question 24

Which pylon link(s) transmit longitudinal loading?

Answer 24

Rear

Question 25

What is the purpose of the fan cowl support beam?

Answer 25

Support the fan cowl

Question 26

How are landing loads transmitted into the wing structure?

Answer 26

Rear spar and false rear spar

Question 27

What is the construction of a vertical stabiliser?

Answer 27

• Front spar
• Ribs
• Auxiliary spar

Question 28

What is the function of the centre fuselage section?

Answer 28

The structure for joining the centre wing box and the MLG together

Question 29

Which section of the airframe are the wings attached to?

Answer 29

The centre section

Question 30

What is the purpose of the dorsal fin on the aircraft?

Answer 30

• Extend the fin for longitudinal stability

- Join the vertical stabiliser to the fuselage