Quiz 2 Flashcards
what are the three classifications of structures
Primary
Secondary
Tertiary
what are the two structural design philosophies
Fail safe
Damage tolerant
what are some common causes of damage
Collision/Impact
over stress
corrosion
Fire
what is transmitted damage
Damage that is remote from the original impact but is still directly connected
what are the four effects of damage
loss of structural strength
loss of functional capacity
change of aerodynamic shape
operational interference
what are four examples of primary structures on an aircraft
spars
engine mounts
landing gear
bulkheads
damage that changes the cross sectional shape and weakens load bearing capacity is classified as what kind of damage
Loss of structural strength
what is meant by a ‘fail safe’ design
a design with 2 load paths
what are the two types of aircraft inspections
Scheduled and Non Routine
what are the most common methods of inspection
visual eddy current ultrasonic x-ray dye penetrant magnetic particle
what are the three classifications of damage
Negligable
Repairable
Replaceable
what are the types of repairs
temporary
typical
specific
special
what is cladding? what purpose does it serve?
A thin coating of pure Aluminium on sheets of aluminium alloys
protects material against corrosion
what are the two protective coatings sprayed over aluminium alloys? what is the difference between the two
Anodizing - Applied at the factory
Alodine - Applied by the AME in the field
what is wash primer used for
Increased adhesion of paint
an abrupt change in the cross sectional area of a piece of sheet metal is known as what?
Stress concentration or a stress riser
what is a break? what are the three most common types
a machine used to bend angles into sheet metal
box & pan
cornice
press
the part on a cornice break where material is bent around is called
a nose bar
what is a slip-roll former used for
creating gradual curves
what do head markings on rivets represent
the material the rivet is made from
what type of rivet is never used for structural repairs
pop rivets
what are the two categories of blind rivets
friction lock
mechanical lock
which aluminium alloy has been annealed and needs to be stored in a freezer
2024 DD
true or false
A cherry friction-lock rivet can replace a solid rivet of the same size
False
True or false
a Huck-lock rivet is friction lock
False
true or false
an olympic lock rivet is a mechanical lock
True
what are three types of turn lock fasteners
Dzus
Camloc
Airloc
what are three methods of dimpling sheet metal
Coin dimple
Radius dimple
Hot dimple
the dimensions of the curvature on a bent piece of sheet metal is known as
Bend allowance
what are lightening holes? why are they flanged
holes drilled in structural members to reduce weight
flanged for strength
list 4 examples of primary structures
spar
bulkhead
engine mount
landing gear
what is a tertiary structure
Structure that carries low stress
