AS 356 Exam 3

The function of a accumulator in an aircraft hydraulic system is to

1. absorb sudden pressure drops during the system demand changes 2. ensure that the pressure remains the same during pressure surges

Most modern aircraft wheels have ___ main parts.

2

The carcass piles of a radial tire are laid at which angle?

90 degrees

One major benefit go using pure aluminum in aircraft construction is that is does not corrode.

Agree

A visible and permanent deformity under the wing or on the horizontal stabilizer is a normal condition and not a threat to the airworthiness of the aircraft.

Disagree

A hydraulic fuse is used to:

Ensure no hydraulic fluid is lost in the event a line breaks

The principle operational advantage of using nitrogen to service the tires of the aircraft is:

It doesn't expand and contracts easily with temp changes

Which aircraft fuselage design method requires the most internal longitudinal structural members to carry stresses and structural loads?

Semi-monocoque

The primary function of a hydraulic reservoir is to:

Store the hydraulic fluid for normal operation

A multi disc, high capacity aircraft brake system is typically employed on which of the following?

Transport category aircraft

A _____ is capable of supplying some amount of hydraulic system pressure when the aircraft's powered hydraulic pumps are not operating or is the aircraft is shutdown.

accumulator

Chine landing tires are used exclusively on

aircraft nose wheels with turbine engines mounted on the fuselage

What is the purpose of a relic valve?

allow dangerous pressure that has built up to be released

On large aircraft with their turbine engines and deicing boots, a common source of pneumatic pressure for operation of the deicing boots is the

bleed air

A balanced hydraulic actuator has/or

can be used in conjunction with an autopilot servo.

A tire which is over inflated will show wear on what part of the tire

center tread surface

Glaze ice is aka

clear ice

Tire inflation should always be checked when the tire is at

cold/ ambient temperature

Which of the following is a primary airframe stress?

compression and tension

All modern aircraft tires have tubes inside the tires

disagree

Corrosion is an

electro -chemical process

Flight control which controls pitch(yaw) is the

elevator(rudder)

The purpose of the stall step on the leading edge of the wing is to

ensure the inner part of the wing will stall before the tip stalls

A fusible plug in a wheel assembly protects against excessive pressure if the wheel assemble is exposed to

excessive heat pressure

The presence of a crack in the skin of an aircraft or structural component usually indicates____has occurred

excessive stress

Bias tires offer longer tread life, less rolling resistance and higher gas mileage

false

In an aircraft built with longhorns, it will have

four to eight max

Always approach a hot/ burning tire/wheel assembly from the

front or back

A compression stress load on the under side of an aircraft wing would most commonly be associated with

hard landings

Aircraft brake systems slow the airplane down by exchanging kinetic energy from the motion and the weight of the into ____energy

heat/thermal

Tire pressure will be abnormally ____ for a wheel/ tire assembly that is very hot

higher

The most common and desirable materials used to service landing gear shock(oleo) struts to proper inflation levels is/are

hydraulic fluid/ oil and air or N2

A dent in the aircraft stressed skin will most adversely affect an aircraft with this type of fuselage construction

monocoque

An aircraft with stressed skin would be usually be of this design

monocoque

The most common seal used in today's hydraulic system is the

o ring

A constant displacement hydraulic pump must have a ____ in the system

pressure regulator

The most important thing to achieve maximum service life from aircraft tires is

proper inflation

The color of the hydraulic fluid that is the most flammable is

red

A modern transport category (pressurized) aircraft will have this type of construction

semi monocoque

The name of the structural members in a wing with carry the major in-flight loads are

spars.

Hydroplane formula

square root of tire pressure x 9

Besides maintaining goof visibility, an added benefit of electrically heated windshields in high performance aircraft is

that it doesn't break into pieces but is instead flexible

What physical characteristics makes a hydraulic actuator a double balanced actuator?

the amount of work that can be accomplished in both dirrections

The primary difference between hydraulics and pneumatics is

the type of medium used in the lines

The component which prevents a landing gear strut's inner and or outer barrels from rotating(castering) and contacting/ banging into each other when the strut is fully extended is a/an

torsion (or torque) link

An aircraft with a conventional gear configuration will have

two main landing gear wheel assemblies under the empennage.

If an aircraft is equipped with vortex generators, they'd be located on the

upper surfaces of lift producing surfaces

An aircraft with a cantilever design

will not have why external support

What items on transport category aircraft are almost always "anti iced"?

windshields, turbine engine, pitot tube

Alcohol and/or glycol mixture can be used to anti ice which items on a plane?

wings, empennage, leading edges and propellers