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105 Cards in this Set
- Front
- Back
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On a semimonocoque fuselage, what component absorbs the primary bending loads?
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Longerons.
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What aircraft structure is designed to transmit engine loads, stresses, and vibrations to the aircraft structure?
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Nacelle.
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What is the main structural member of a wing assembly?
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Spar.
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What is the primary purpose of a stabilizer?
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To keep the aircraft in straight and level flight.
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What type of flight controls provides control over pitch, roll, and yaw?
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Primary controls.
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What flight control is operated by a side-to-side movement of the control stick?
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Aileron.
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What type of flight control system is used on aircraft that travel at or near supersonic speeds?
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Power-operated or Power-boosted.
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What flight control provides lateral control (stability about the lateral axis)?
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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?
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Emergency wing sweep.
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Trim tabs, wing flaps, and speed brakes are all considered what type of flight controls?
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Secondary flight controls.
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What is the main purpose of a speed brake?
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Reducing aircraft speed.
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What type of shock strut is used on all naval aircraft?
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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?
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The shimmy damper.
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What force is used to raise the arresting hook of an aircraft?
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Hydraulic power.
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What component of a catapult system allows the aircraft to be secured to the carrier deck?
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The holdback assembly.
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What is the major advantage of a helicopter over a fixed-wing aircraft?
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Lift and control are independent of forward speed.
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Most Navy helicopters have what fuselage design?
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Monocoque.
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What type of stress is produced by two forces pulling in opposite directions along the same straight line?
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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?
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Bending.
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What is the most widely used metal in modern aircraft construction?
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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?
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225 F.
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Radomes, wing tips, stabilizer tips, and antenna covers are made from what type of plastic?
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Reinforced plastic.
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What metal property allows it to resist abrasion, penetration, cutting action, and permanent distortion?
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Hardness.
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What metal property enables a metal to return to its original shape after an applied force has been removed?
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Elasticity.
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At what temperature does aluminum alloy become a liquid form?
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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?
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Corrosion.
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What property allows two metals to be welded, brazed, or soldered?
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Joining.
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What are the three basic metal working processes?
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Hot-working, cold-working, and extruding.
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What type of metal contains iron as its principal constituent?
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Ferrous.
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What are the two most commonly used methods of hardness testing?
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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?
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Titanium alloys.
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What measurement must be taken to determine the Brinell number of a metal?
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The diameter of the impression.
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How does a Rockwell tester measure the hardness of a metal?
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Measures the depth of the impression.
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The Riehle tester is designed for making tests comparable to what bench type machine?
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Rockwell tester.
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What hardness tester is used for testing aluminum alloys, copper, brass, and other soft metals?
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Barcol tester.
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What type of plastic will soften when heated and harden when cooled?
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Thermoplastic.
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What type of plastic will harden when it is heated?
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Thermosetting.
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Plastic sheets should be stored in a bin and must be tilted at least how many degrees from vertical?
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10 degrees.
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What are the three types of advanced composites used on naval aircraft?
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Graphite, Boron, and Kevlar.
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The shear load on a reinforced shell type fuselage is primarily carried by what structural component(s)?
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The skin
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In a semimonocoque fuselage design, longerons are supplemented by what other longitudinal members?
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Stringers
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What is the primary unit(s) that houses an aircraft engine?
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Nacelle
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What are the internal chordwise structural members of a wing assembly?
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Ribs
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The skin of a wing assembly is fastened to which structural components?
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Ribs, spars, and formers
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The load imposed on the wings during flight acts primarily on what structural member(s)?
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Skin
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Which of the following is a primary flight control?
1. Rudder 2. Spoiler 3. Trim tab 4. Wing flap |
1. Rudder
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To roll an aircraft clockwise, you must cause what change in flight control positions?
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Lower the left aileron and raise the right one
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When the control stick of an aircraft equipped with a flaperon system is moved to the left, the left and right flaperons will be in which of the following positions?
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Left up, right flush
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Longitudinal control systems control movement of the aircraft about which of the following axes?
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Lateral only
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To roll an aircraft clockwise, you must cause what change in flight control positions?
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Lower the left aileron and raise the right one
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When the control stick of an aircraft equipped with a flaperon system is moved to the left, the left and right flaperons will be in which of the following positions?
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Left up, right flush
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Longitudinal control systems control movement of the aircraft about which of the following axes?
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Lateral only
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Which of the following types of flaps operate on tracks and rollers?
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Fowler flaps
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What is the primary purpose of a spoiler?
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Decrease lift
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A boundary layer control is used with which of the following secondary flight controls?
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Slats
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What part of an air-oil shock strut controls the rate of flow of the fluid between the piston and the cylinder?
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The orifice plate
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During strut compression, fluid passes through an orifice into what chamber of an air-oil type shock strut?
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Upper
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The shimmy damper on a nose landing gear assembly prevents the nosewheel from shimmying during takeoff and landing by what means?
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By metering hydraulic fluid through a small orifice between two cylinders or chambers
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What component is used to hold the arresting hook in the down position to prevent it from bouncing when it strikes the carrier deck?
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A snubber
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When comparing catapult hookup methods on a carrier, the nose gear launch method is superior to the holdback pendant method for all EXCEPT which of the following?
1. It saves time 2. It cost less to operate 3. It requires fewer personnel 4. It is the safest method |
2. It cost less to operate
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Which of the following helicopter components provide(s) lift?
1. The engines 2. The fuselage 3. The tail rotor 4. The rotor blades |
4. The rotor blades
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What main landing gear component of a helicopter includes the weight-on-wheels sensing switch?
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Left main landing gear
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The tail landing gear of a helicopter is capable of swiveling how many degrees?
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360°
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What type of spar is used in the construction of a rotor blade?
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Titanium spar
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How many rotor blades are attached to the main rotor head of an H-60 helicopter?
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Four
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Which of the following components is NOT a part of the tail pylon of a helicopter?
1. The intermediate gearbox 2. The tail gearbox 3. The horizontal stabilator 4. The swash plate |
4. The swash plate
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What type of stress is defined as “stress exerted when two pieces of fastened material tend to separate”?
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Shear
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What type of stress is produced in an engine crankshaft while the engine is running?
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Torsion
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What structural metal is lightweight, strong, and corrosion resistant?
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Titanium
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What is the largest portion of metal present in an alloy?
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Base metal
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What high tensile metal is used to manufacture tubes, rods, and wires?
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Alloy steel
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What does the core material of reinforced plastic consist of?
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Honeycomb structure
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The strength of all metals is closely related to what other characteristic?
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Hardness
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What property of a metal allows for little bending and deformation without shattering?
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Brittleness
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What metal property allows a metal to be hammered, rolled, or pressed into various shapes without cracking or breaking?
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Malleability
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What metal property allows a metal to be permanently drawn, bent, or twisted into various shapes without breaking?
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Ductility
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What metal property allows a metal to carry heat or electricity?
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Conductivity
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When all other metal properties are equal, what method of joining metals structurally has the greatest advantage?
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Welding
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The intermediate shape of steel that has width greater than twice the thickness and from which sheets are rolled is known by what name?
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Slab
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What metal working process is used to make wire?
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Cold drawing
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What metal working process involves the forcing of metal through an opening in a die?
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Extruding
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While holding a piece of metal against a revolving stone, you see red sparks leave the stone and turn to straw color. This is what type of metal?
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Cast iron
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What is the prime characteristic of aluminum?
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Lightweight
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Which of the following processes of joining aluminum alloys produces the strongest joints?
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Riveting
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What is the principal alloying element of aluminum alloy 2024?
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Copper
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What aluminum alloy should be used when the highest strength is required?
1. 1100 2. 2014 3. 5052 4. 7178 |
4. 7178
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An aluminum alloy containing manganese as the major alloying element is identified by what number?
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3XXX
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Alclad is an aluminum alloy with a protective coating of what material?
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Pure aluminum
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What is the greatest disadvantage in the use of titanium?
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Brittleness after long exposure to temperatures above 1000° F
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The use of copper as a structural material is limited because of what factor?
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Great weight
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What is the principal element added to copper to form brass?
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Zinc
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What extinguishing agent should be used on a magnesium fire?
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Graphite powder
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How many different weights does a Rockwell hardness tester have?
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Two
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Each Riehle hardness tester is supplied with a diamond penetrator and what size ball penetrator?
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1/16 inch
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You check the condition of the point of a Barcol hardness tester by using the test disc and find the indicator reading is NOT within the specified range. You should correct this condition by first following what procedure?
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Install a new point
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You can distinguish a plastic enclosure from a glass enclosure by performing which of the following actions?
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Checking for a nonringing sound while tapping lightly
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If long and improper storage has caused the adhesive to deteriorate on a sheet of plastic, the masking paper should be moistened with what chemical?
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Aliphatic naphtha
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In various aircraft structural components, what materials are replacing and supplementing metallic materials?
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Composite material
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The monocoque fuselage design may be divided into what three classes?
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monocoque, semimonocoque, and reinforced shell
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The monocoque fuselage design is comprised of what structural componants?
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vertical rings, station webs, and bulkheads
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The semi-monocoque fuselage design is basically a monocoque design that also incorporates what structural componants?
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longitudinal members: that is, stringers and longerons.
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