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45 Cards in this Set
- Front
- Back
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How many principal structural units are there
in a fixed-wing aircraft? |
Nine.
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On a semimonocoque fuselage, what component
absorbs the primary bending loads? |
Longerons.
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What aircraft structure is designed to transmit
engine loads, stresses, and vibrations to the aircraft structure? |
Nacelle.
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What is the main structural member of a wing
assembly? 2-17 Figure |
Spar.
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What is the primary purpose of a stabilizer?
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To keep the a/c in straight and level flight.
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What type of flight controls provides control
over pitch, roll, and yaw? |
Flight controls.
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What flight control is operated by a
side-to-side movement of the control stick? |
Aileron.
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What type of flight control system is used on
aircraft that travel at or near supersonic speeds? |
Power-operated or power-boosted.
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What flight control provides lateral control?
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Aileron.
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What flight control provides longitudinal control?
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Elevator.
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When is the mechanical control of an F-14
wing sweep used? |
Emergency wing sweeps.
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Trim tabs, wing flaps, and speed brakes are
all considered what type of flight controls? |
Secondary flight controls.
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What is the main purpose of a speed brake?
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Reducing a/c speed.
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What type of shock strut is used on all naval
aircraft? |
Air-oil shock strut.
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What component of a nose landing gear
resists sudden twisting loads that are applied to the nosewheel during ground operation? |
the shimmy damper.
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What force is used to raise the arresting hook
of an aircraft? |
hydraulic power.
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What component of a catapult system allows
the aircraft to be secured to the carrier deck? |
the holdback assymbly
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What is the major advantage of a helicopter
over a fixed-wing aircraft? |
Lift control are independent of forward speed.
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Most Navy helicopters have what fuselage
design? |
Monocoque.
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What type of stress is produced by two forces
pulling in opposite directions along the same straight line? |
tension.
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What force is the opposite of tension?
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compression.
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What type of stress is a combination of tension
and compression? |
Bending
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What type of stress is the result of a twisting
force? |
Torsion
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What is the most widely used metal in modern
aircraft construction? |
Aluminum alloy
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What is the world's lightest structural metal?
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Magnesium.
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At what temperature does transparent plastic
become soft and pliable? |
225 F.
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Radomes, wing tips, stabilizer tips, and antenna
covers are made from what type of plastic? |
reinforced plastic
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What metal property allows it to resist
abrasion, penetration, cutting action, and permanent distortion? |
Hardness.
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What metal property enables a metal to return
to its original shape after an applied force has been removed? |
Elasticity.
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At what temperature does aluminum alloy
become a liquid form? |
1,110 F.
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What term is defined as the eating away or
pitting of the surface or the internal structure of a metal? |
Corrosion.
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What property allows two metals to be
welded, brazed, or soldered? |
joining.
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What are the three basic metal working
processes? |
Hot-working, cold-working, and extruding.
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What type of metal contains iron as its
principal constituent? |
Ferrous.
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What are the two most commonly used
methods of hardness testing? |
The Brinell and Rockwell tests.
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What are the two classes of wrought alloys?
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Heat treatable and nonheat treatable.
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What type of metal is used in the construction
of fire walls and fuselage skin adjacent to the engine exhaust outlet? |
Titanium alloys.
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What measurement must be taken to
determine the Brinell number of a metal? |
The diameter of the impression.
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How does a Rockwell tester measure the
hardness of a metal? |
Mearsure the depth of the impression.
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The Riehle tester is designed for making tests
comparable to what bench type machine? |
Rockwell tester.
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What hardness tester is used for testing
aluminum alloys, copper, brass, and other soft metals? |
Barcol tester.
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What type of plastic will soften when heated
and harden when cooled? |
Thermalplastic.
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What type of plastic will harden when it is
heated? |
Thermosetting.
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Plastic sheets should be stored in a bin and
must be tilted at least how many degrees from vertical? |
10.
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What are the three types of advanced composites
used on naval aircraft? |
Graphite, Boron, and Kevlar.
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