AC STRUCTURES AND LANDING GEARR

Question 1

It is the reference wood
used for aircraft structures because of its
uniformity, strength, and excellent shock resistance qualities.

Answer 1

Sitka spruce

Question 2

It is constructed of
two or more layers of solid wood that are
bonded together.

Answer 2

Laminated wood

Question 2

2 General groupings of sheet metal components:
Structural components, Non-structural
components

Answer 2

Structural components
Non-structural components

Question 3

Those components of aircraft that
transfer the forces exerted on the aircraft
from one location to another or absorb the
forces during flight.

Answer 3

Structural Components

Question 4

Those components of aircraft that do
not transmit or absorb the forces of flight.

Answer 4

Non-structural Components

Question 5

It is the stress that resists a force
that tends to pull something apart. It is the
stress in a member when a force tends to
elongate or stretch it.

Answer 5

Tension Stress

Question 6

It is the resistance to crushing
produced by two forces pushing toward
each other in the same straight line.

Answer 6

COMPRESSION STRESS

Question 7

It is the stress an object experiences when it is twisted.

Answer 7

Torsion Stress

Question 8

It is the stress developed when a
force tends to cause a layer of material to
slide along an adjacent layer.

Answer 8

Shear Stress

Question 9

It is actually a
combination of compression and tension. It
is the stress that tends to crush or press
together.

Answer 9

Bending stress

Question 10

3 Landing Gear Arrangement / Configuration

Answer 10

Tail Wheel (Conventional)
Tricycle-Type Landing Gear
Tandem Landing Gear

Question 11

The main wheels are located
in line under the fuselage and outrigger
wheels support the wings.

Answer 11

Tandem Landing Gear

Question 12

2 Classification of Landing Gear

Answer 12

Fixed Landing Gear
Retractable Landing Gear

Question 13

8 Landing Gear Types

Answer 13

Hulls and Floats
Ski Landing Gear
Skids Landing Gear
Shock Absorbing and Non-Shock Absorbing Landing Gear
Leaf-type Spring Gear
Rigid
Bungee Cord

Question 14

Airplanes from water may be
provided with a single or double float
depending upon the design and
construction.

Answer 14

Hulls and Floats

Question 15

It is a landing gear designed
to accommodate operations on snow and
ice.

Answer 15

Ski landing gear

Question 16

It is a tire type that the most popular
low-pressure tire found today on
piston-powered aircraft.

Answer 16

type III tire

Question 17

They have exceptionally high load carrying ability and are available in ply ratings from 4 to 38.

Answer 17

Type VII extra-high pressure tires

Question 18

The _____________ of a tire relates to its maximum
static load and its inflation pressure.

Answer 18

ply rating

Question 19

Those have an inner liner that is
approximately one- tenth of an inch thick
and serves as a container for the air.

Answer 19

Tubeless tires

Question 20

Those have no such liner, but are
somewhat smoother on the inside so the
tube will not be damaged by chafing
against the inside of the tire

Answer 20

Tube type tires

Question 21

The most prevalent arrangement on modern aircraft is the _____________ configuration.

Answer 21

tricycle gear

Question 22

A ________________ brake system utilizes a
forged-steel disc with a smooth ground
surface that is keyed to rotate with the
wheel.

Answer 22

floating-disc

Question 23

A __________________ is bolted to a flange on the aircraft landing-gear strut, and lining cavities in the housing.

Answer 23

cast-aluminum or magnesium alloy
housing

Question 24

A ______________________, holds a
machined aluminum alloy piston that is
sealed in the cavity with an O-ring packing
around its circumference

Answer 24

piston cavity, or cylinder

Question 25

This device maintains the proper disc to friction puck spacing as the puck wear with use.

Answer 25

Automatic adjusters

Question 26

The ________________ are keyed to a torque
tube that allows them to move laterally,
while not allowing them to rotate with the
wheel and rotating disc assembly

Answer 26

stationary discs

Question 27

A __________________ is placed between
each of the stationary discs.

Answer 27

rotating disc

Question 28

The ______________________ are keyed into the wheel by disc-drive tangs.

Answer 28

rotating discs

Question 29

These brakes can absorb tremendous amounts of kinetic energy and yet have relatively low
weight.

Answer 29

Carbon Brake

Question 30

This fabric is cut into strips on the bias,
meaning that the cords of the fabric run at
an angle of approximately 4531 to the
length of the strip.

Answer 30

CARCASS

Question 31

It is made of specially compounded rubber
and has a pattern of grooves molded into
its surface to give the tire the required
traction characteristics according to the
type of runway surface the aircraft will
encounter.

Answer 31

tread

Question 32

It is designed especially for use on hard surfaced runways and gives long tread
wear, good traction, and exceptionally
good directional stability.

Answer 32

RIB TREAD

Question 33

The ______________ is a rubber covering that
extends from the tread down to the bead
heel to protect the carcass from injuries
such as cuts or bruises and from exposure to
moisture and ozone.

Answer 33

sidewall

Question 34

Those have a rib tread in
the center and diamonds molded into the
shoulders.

Answer 34

All-weather treads

Question 35

The _________________ was popular for tires used on airplanes with no
brakes, or for aircraft whose brakes were
used primarily as a taxi aid, rather than for
slowing the aircraft in its landing roll.

Answer 35

plain, or smooth, tread