1-39.
1-40.
1-41.
1-42.
1-43.
1-44.
1-45.
1-46.
When in flight, the wing spars of
an aircraft-undergo bending
stresses.
These stresses are
actually a combination of what
other stresses?
1.
Shear and tension
2.
Bending and torsion
3.
Compression and tension
4.
Shear,
torsion, and compression
The fundamental advantage of the
helicopter over the conventional
aircraft is its ability to move
independent of forward speed.
1.
True
2.
False
Which of the following helicopter
components provides lift?
1.
The engines
2.
The fuselage
3.
The tail rotor
4.
The rotor blades
The fuselage of an H-3 helicopter
is of what type of construction?
Monocoque
2.
Semimonocoque
3.
Reinforced shell
4.
Welded steel truss
Which of the following terms is NOT
associated with the movement of
helicopter rotor blades?
1.
Lag
2.
Lead
3.
Flip
4.
Flap
Rotor blade movement in
relationship to the hub is limited
by what component(s)?
1.
The hinges
2.
The gearbox
3.
The transmission
4.
The pitch control beam
What rotor blade component is NOT
made of aluminum alloy?
1.
cuff
2.
Spar
3.
Tip cap
4.
Tip pocket
The resistance to stretching of an
object produced by two forces
pulling in opposite directions
along the same straight line is
known as what type of stress?
1.
Shear
2.
Bending
3.
Torsion
4.
Tension
1-47.
When an aircraft is operating,
which of the following components
1-48.
1-49.
1-50.
1-51.
1-52.
1-53.
is subject to torsional stresses?
A shock strut
2.
A tailhook shank
3.
A propeller shaft
4.
A reservoir piston
What is the worlds lightest
structural metal?
Steel
2.
Titanium
3.
Aluminum
4.
Magnesium
What is the largest portion of
metal present in an alloy?
1.
Main metal
2.
Base metal
3.
Foundation metal
4.
Major component metal
The core material of reinforced
plastic consists of a honeycomb
structure.
1.
True
2.
False
The strength of all metals is
closely related to what other
characteristic?
Hardness
2.
Denseness
3.
Brittleness
4.
Conductivity
Metals possessing which of the
following properties should NOT be
used in aircraft structures?
1.
Ductility
2.
Elasticity
3.
Brittleness
4.
Contraction
What metallic property is necessary
for sheet metal used in wing tip
construction?
1.
Conductivity
2.
Malleability
3.
Fusibility
4.
Ductility
1.
4
1.
1.
1.