11.2 Meg Flashcards
Fail safe?
One fails another takes the load
Disadvantage of fail safe?
Increases weight
Damage tolerance is?
Damage can be detected in normal inspections before failure (fatigue)
5 main structure?
. Fuselage
. Wings
. Stabiliser
. Flight controls
. Landing gear
Hoops stress is caused by?
Cabin pressurisation
Body station =
Body station = X axis = fuselage top (vertical)
Body buttock =
Body buttock = Y axis = left to right (vertical)
Body waterline =
Body waterline = Z axis = top to bottom (horizontal)
Zones..
Odd number = left
Even number = right
Smaller number = inboard
Larger number = outboard
What’s different about fuel pipe bonding?
It has two bonding points
Safe life?
Where a component is extremely unlikely to fail
The wings are attached by?
Wing boxes
The vert8cak stab is attached to tail cone by how many bolts?
3 bolts
Close tolerance?
Raised triangle on head
Only use water?
Between 7-8PH
And chloride level less than 100ppm
Body station is measured from where?
Set point infront of nose
Wing station measured?
Root to tip
On a Boeing aircraft what is the stabiliser chord plan?
Horizontal reference plane
Zone 100?
Lower fuselage
Sub major zone?
What side,
Odd = left
Even = right
Longeron?
Longitudinal member for bending stress
What takes load on monocoque?
Skin
Frame?
Gives shape, takes hoop stress
Rib?
Leading edge or trailing edge, gives shape, takes bending, shear and torsion
Stringers?
Stiffener where can attach to skin
Pressure bulkhead?
Supports the pressure load
Crack stopper?
Stops the crack
2 divisions of paint coat?
. Primer
. Top coat
If bonded correctly, resistance is?
0.025 ohums
On one stud?
No more than 4 terminals
Crew direct vision window what zone?
200
