Wheels, Tyers And Brakes

Question 1

Tubeless tyres are lighter. What does this do to heat generation?

Answer 1

Decreases it.

Question 2

What are tyres inflated with?

Answer 2

Nitrogen.

Question 3

A tyres’ layers go from crown to shoulder to sidewall to what?

Answer 3

Bead.

Question 4

Where does a tyre ware when under-inflated?

Answer 4

At the shoulders.

Question 5

What is tyre creep?

Answer 5

When acceleration causes tyre to slip around the wheel.

Question 6

How do you measure tyre creep?

Answer 6

Creep marks must overlap.

Question 7

The term “ply rating” stands for what?

Answer 7

Strength of tyre.

Question 8

Landing gear torsion links are used to…

Answer 8

prevent rotation of the landing gear piston in the oleo strut.

Question 9

In a piston engine, turbocharger boost pressure can be monitored by…

Answer 9

Manifold pressure gauge.

Question 10

What type of tyre tread does an a320 have?

Answer 10

Ribbed

Question 11

Why might you use a chined tyre compared to a marstrand tyre?

Answer 11

They keep water from the engines

Question 12

Where is the maximum load and speed printed on a wheel?

Answer 12

Tyre sidewall.

Question 13

Whats the minimum tread depth on a ribbed tread?

Answer 13

2mm

Question 14

What percentage of inflation does a tyre need to loose in order to have tyres re inflated?

Answer 14

10%

Question 15

What is it called when a wedge of water builds up in front of the tyre?

Answer 15

Aquaplaning.

Question 16

What factor do we use to calculate the aquaplaning speed?

Answer 16

Tyre pressure.

Question 17

When pressure is in psi, what is the equation for aquaplaning speed?

Answer 17

A = 9 -/P

Question 18

When pressure is in kg/cm^2, what is the equation for aquaplaning speed?

Answer 18

A = 34-/P

Question 19

Above the aquaplaning speed, what occurs?

Answer 19

The tyre looses contact with the ground.

Question 20

What do you measure aquaplaning speed in?

Answer 20

Nautical miles per hour.

Question 21

What is an example of tyre overheat protection.

Answer 21

Fusible plug.

Question 22

Does the break wear indicator pin stick put or in when the breaks are worn?

Answer 22

In

Question 23

What causes brake fade?

Answer 23

Overheating

Question 24

What do you use to check break wear?

Answer 24

Break wear indicator pin.

Question 25

Whats an advantage of carbon breaks?

Answer 25

Lighter / last long /

Question 26

Are steel brakes or carbon breaks less prone to brake fade?

Answer 26

Carbon.

Question 27

What aircraft uses electric brakes?

Answer 27

787

Question 28

Why do aircraft need time between the next takeoff?

Answer 28

Brake heat.

Question 29

Anti skid has to be serviceable to use blank.

Answer 29

Autobrake.

Question 30

What happens to the break pressure when an anti skid is detected?

Answer 30

Pressure reduced to the slowest turning wheel.

Question 31

Pressure is reapplied at lower pressure and rises to find maximum blank blank on an anti skid.

Answer 31

Braking force.

Question 32

When does antiskid turn off?

Answer 32

Walking pace.

Question 33

Anti-skid systems contain touchdown bounce protection. What does this mean?

Answer 33

Prevents brake pressure being applied before touchdown.

Question 34

What does autobraking control?

Answer 34

Deceleration rate.

Question 35

What speed does auto brakes arm on a rejected takeoff?

Answer 35

80knots.

Question 36

What two things can you do to turn off autobrake?

Answer 36

Apply manual brakes or set thrust to toga.

Question 37

What must be on and working in order to have auto brake?

Answer 37

Anti-skid.

Question 38

Parking brakes should not be set if what?

Answer 38

Brakes are excessively hot.

Question 39

Strain is a measure of blank of the fuselage.

Answer 39

Deformation.

Question 40

True or false: Cockpit windows never have an additional speed restriction, related to bird impact, when window heating is inoperative

Answer 40

False

Question 41

After using the emergency braking system, the brake pedals will feel blank?

Answer 41

Soft underfoot.

Question 42

True or false : Careful brake application by the pilot in case of anti-skid failure can never achieve the same performance as a properly functioning anti-skid system

Answer 42

True

Question 43

True or false : With RTO not available, take-off might not be allowed because the minimum braking distance with manual braking is longer.

Answer 43

True.

Question 44

What is the input data of the Anti-skid system?

1. Wheel speed
2. Groundspeed
3. Wheel speed of all the wheels on the boogie
4. Tire pressure
5. Brake temperature

Answer 44

123

Question 45

Break pressure will be Decreased on the faster/slower turning wheels.

Answer 45

Slower

Question 46

Shimmy occurs on the nose-wheel landing gear during taxiing when the wheels:

1. tend to describe a sinusoidal motion on the ground
2. no longer respond to the pilot’s actions

This effect is countered by:

3. the torque link
4. an accumulator associated with the steering cylinder

Answer 46

1 4

Question 47

Nose wheel shimmy : An oscillatory lateral movement of the nose-wheel about the longitudinal/lateral axis of the aircraft when the nose wheel is in contact with the runway during the take-off or landing run.

Answer 47

Longitudinal