Aircraft Tyres

Question 1

What type of tyres are aircraft fitted with?

Answer 1

Pneumatic Tyres

Question 2

What are aircraft tyres inflated with?

Answer 2

Nitrogen - inert

Question 3

Define a Ply Rating

Answer 3

Index of Strength

Question 4

What is the weakest part of the tyre?

Answer 4

The sidewall

Question 5

Tubeless Tyres vs Tubed Tyres

Answer 5

Tubeless Tyres > Tubed Tyres

Question 6

How many times can tyre grooves/treads of an aircraft be retreated?

Answer 6

Retreated several times.

Question 7

Tyre Creep Lines on Tyre

Answer 7

Lined up - no creep

Out of line, but within bordered limits - acceptable creep

Out of range - Unacceptable creep.

Question 8

What is a chined tyre?

Answer 8

Fitted on aircraft with underslung engines to prevent water ingestion from wet runways.

Question 9

Units of a tyre’s speed rating

Answer 9

MPH

Question 10

How do we know the tyres is worn?

Answer 10

When grooves disappear.

Question 11

Overinflation will cause?

Answer 11

Excessive wear on the crown

Question 12

Underinflation will cause?

Answer 12

Excessive shoulder wear.

Question 13

Formula for Aquaplaning

Answer 13

9x √psi (1 bar = 15 psi)

Question 14

Friction Coefficient while aquaplaning

Answer 14

0

Question 15

Reverted Rubber Hydroplaning

Answer 15

Rubber tries to revert back to its liquid form

Question 16

Viscous Hydroplaning

Answer 16

Layer of dirt, oil, debris + water will cause hydroplaning. after rainfall / moisture on the runway.`

Question 17

Reducing the risk of aquaplaning

Answer 17

Ensure tyre pressures are correct

Use of the anti-skid system

Question 18

Most likely scenario for fusible plugs melting

Answer 18

RTO @ MTOW