Airman Chapter 5 And 6

Front 1

How is aircraft hardware identified for use?

Back 1

By its specification number or trade name.

Front 2

What are the three principal parts of a bolt?

Back 2

The head, grip, and threads.

Front 3

What are the three most commonly used
screws in aircraft construction?

Back 3

Machine screw, structural screw, and self-tapping screw.

Front 4

What general group of aircraft nuts require
an external locking device, such as cotter
pins, safety wire, or locknuts?

Back 4

Nonself-locking nuts.

Front 5

What is the purpose of placing a washer
under the head of a bolt?

Back 5

A washer guards against mechanical damage to the material being bolted and prevents
corrosion of the structural members.

Front 6

What are the three most common types of
turnlock fasteners?

Back 6

Camloc, Airloc, and Dzus.

Front 7

What are the two major types of rivets used in
aircraft construction?

Back 7

olid rivets and blind rivets.

Front 8

What type of rivets are used where
streamlining is important?

Back 8

Countersunk head or flush rivets.

Front 9

What are five fasteners that are included in
the category of miscellaneous fasteners?

Back 9

Snap rings, turnbuckles, taper pins, flat head pins, and flexible connectors/clamps.

Front 10

What manual should you consult to find
correct replacement wires for a given
aircraft?

Back 10

Maintenance Instruction Manual (MIM).

Front 11

What is the purpose of safetying aircraft
hardware?

Back 11

Safetying prevents aircraft hardware and fasteners from working loose due to vibration.

Front 12

What is the most common method of safety
wiring?

Back 12

The single-wire, double-twist method.

Front 13

What are the two methods of safetying
turnbuckles used by the military services?

Back 13

Clip-locking method and wire-wrapping method.

Front 14

What type of cotter pin should you use when
nonmagnetic material is required?

Back 14

Stainless steel cotter pins.

Front 15

Washers used in aircraft structures are
grouped into what three general classes?

Back 15

Plain, lock washers, and special washers.

Front 16

What are the four types of jet propulsion
engines?

Back 16

The four types of jet propulsion engines are the rocket, ramjet, pulsejet, and gas
turbine engines.

Front 17

Describe the basic operating principle for all
jet engines

Back 17

Burning fuel in a container that has an opening at one end causes the expanding
gases to rush out of the nozzle at a high velocity, which leaves an unbalanced
pressure at the other end. This pressure moves the container in the direction
opposite to that of the escaping gases.

Front 18

The law that states "for every acting force
there is an equal and opposite reacting force"

Back 18

Newton's Third law, which states that "for every acting force there is an equal and
opposite reacting force."

Front 19

What is the simplest power plant that uses
atmospheric air to support combustion?

Back 19

The ramjet is the simplest power plant that uses atmospheric air to support combustion.

Front 20

What jet engine doesn't have either a
compressor or a turbine and can't take off
under its own power?

Back 20

The pulsejet doesn't have a compressor or a turbine. It can't take off under its own
power

Front 21

What are the four types of gas turbine
engines

Back 21

The four types of turbine engines are the turbojet, turboprop, turboshaft, and turbofan
engines.

Front 22

What are the five major components of a
turbojet?

Back 22

Inlet duct, compressor, combustion chamber, turbine, and exhaust cone assembly

Front 23

What are the three major assemblies of the
turboprop engine?

Back 23

The power section, the torquemeter assembly, and the reduction gear assembly

Front 24

Turboshaft engines are normally found on
what type of aircraft?

Back 24

Normally, helicopters have turboshaft engines

Front 25

What is the major difference between a
turboshaft and a turbofan engine?

Back 25

The major difference between a turboshaft and turbofan engine is the airflow.

Front 26

What is the heart of the gas turbine fuel
system?

Back 26

The heart of the gas turbine engine fuel system is the fuel control

Front 27

List some of the engine-operating variables
that are sensed by modern fuel controls

Back 27

Some of the engine operating variables that are sensed by modern fuel controls
include the following: pilots' demands, compressor inlet temperature, compressor
discharge pressure, burner pressure, compressor inlet pressure, rpm, and turbine
temperature.

Front 28

What are the two main parts of a turbine that
need lubrication?

Back 28

The main bearings and accessory drive gears.

Front 29

In most lubricating systems, a pressure pump
or system provides oil that lubricates and
cools. What system returns the oil to the tank
for reuse?

Back 29

A scavenging system returns oil to the tank for reuse.

Front 30

What is the difference between low- and highvoltage
capacitor discharge ignition
systems?

Back 30

The high-voltage system produces a double spark, which ionizes the gap between
the igniter plug electrodes so the high-energy, low-voltage component may follow.

Front 31

Where is the accessory section of the gas
turbine engine usually mounted?

Back 31

The accessory section of the gas turbine engine is usually mounted beneath the
compressor section.

Front 32

What is the Brayton cycle?

Back 32

The Brayton cycle is a process that begins with certain conditions and ends with
those same conditions

Front 33

What are the two engine designation systems
used to identify aircraft power plants?

Back 33

ANA Bulletin No. 306M designation system and MIL-STD-1812 designation system.

Front 34

What does the letter X or Y preceding the
basic designation signify?

Back 34

A special designation, such as experimental or restricted service

Front 35

What are the three parts of the
MIL-STD-1812 designation system?

Back 35

The type indicator, the manufacturer's indicator, and the model indicator

Front 36

F401-PW-400 is an example of what engine
designation system?

Back 36

MIL-STD-1812 system.

Front 37

What device must be installed before all
maintenance turnups?

Back 37

Before any maintenance turnups are conducted, personnel MUST install protective
screens for all ducts.

Front 38

List the two most serious hazards when
working around engine exhausts?

Back 38

The two most serious hazards that you face when working around engine exhausts
are high temperatures and high velocity of gases exiting tailpipes

Front 39

Why should you wear ear protectors when
working around jet engines?

Back 39

When you work around jet engines, you should always wear protectors to avoid
hearing loss.