Aircraft Wheels

Question 1

supports the aircraft when it is on the ground and to provide it with a means of mobility for takeoff, landing, and taxiing

Answer 1

wheels and tires

Question 2

help to cushion the aircraft from shocks due to irregularities in the ground surface and take some of the shock on landing

Answer 2

pneumatic tires

Question 3

irregularities in the ground surface

Answer 3

bumps

Question 4

houses brake units

Answer 4

main wheels, sometimes nose wheels

Question 5

control the movement of the aircraft on the ground and provide a means of deceleration on landing

Answer 5

brake units

Question 6

Because aircraft tires are usually larger and stiffer than the tires found on cars, they also have to be specially designed to facilitate ________.

Answer 6

tire replacement

Question 7

Two Types of Wheel in Common Use

Answer 7

loose or detachable flange type, divided wheel

Question 8

Both the loose and the detachable flange type of wheel are made with one ____________ and the other a separate removable part which is machined to fit over the wheel rim.

Answer 8

flange integral with wheel body

Question 9

The difference between the loose and the detachable flange tires is the method by which the removable flange is ______.

Answer 9

secured

Question 10

In the loose flange type, the flange is retained by a ________ on the wheel rim and held in place by the __________.

Answer 10

locking device, tire pressure

Question 11

In the detachable flange type of wheel, the flange is secured to the wheel body by __________.

Answer 11

nuts and bolts

Question 12

In the __________, the flange is retained by a locking device on the wheel rim and held in place by the tire pressure.

Answer 12

loose flange type

Question 13

In the ____________ of wheel, the flange is secured to the wheel body by nuts and bolts.

Answer 13

detachable flange type

Question 14

A ________ flange maybe a single piece or two or three pieces bolted together.

Answer 14

detachable

Question 15

The advantage of the loose or the detachable flange type of wheel is that the tire can be changed without _______________.

Answer 15

removing the wheel from the aircraft

Question 16

What type of wheel is most usually found on aircraft?

Answer 16

divided wheel

Question 17

It consists of two half wheels matched up and joined together by bolts which passed through the two halves.

Answer 17

divided wheel

Question 18

A divided wheel consists of two half wheels matched up and joined together by _____ which pass through the two halves.

Answer 18

bolts

Question 19

Why is seal incorporated at the joint of a divided wheel?

Answer 19

• prevent abrasion between two halves
• airtight fit

Question 20

What do you call the tendency for the tire to rotate around the wheel when in service particularly during heavy braking?

Answer 20

creep

Question 21

If creep is excessive, it will tear out the _______ on a wheel fitted with an inner tube causing the tire to burst.

Answer 21

inflation valve

Question 22

When is creep less likely to occur?

Answer 22

if gas pressure is correctly maintained

Question 23

What happens if the inflation valve is torn out?

Answer 23

the tire will burst

Question 24

Methods to Prevent Creep

Answer 24

• knurled flange
• rim tapered wheel

Question 25

The inner face of the wheel flange is milled so that the side pressure of the tire locks the tire walls to the flange. What creep prevention method is used here?

Answer 25

knurled flange

Question 26

The flange area has a greater diameter than at the center of the rim. When the tire is inflated, the side pressure forces the tire outwards to grip the rim. What creep prevention method is used here?

Answer 26

rim tapered wheel

Question 27

Under extra hard braking conditions, the heat generated in the wheel tire and brake assembly can be sufficient to cause the pressure to rise to a level that the tire cannot withstand causing it to split with possible catastrophic consequences for the aircraft. What is this called?

Answer 27

tire blowout

Question 28

These are fitted in some wheels to prevent a sudden tire blowout by screwing them into holes in the wheel rim and are sealed by a piston which is held by a fusible alloy. What is this called?

Answer 28

fusible plugs or thermal plugs

Question 29

Fusible plugs or thermal plugs are screwed into holes in the ______ and are sealed by a piston which is held in position in the plug by a _________.

Answer 29

wheel rim, fusible alloy

Question 30

Under excessive heat conditions, the alloy melts allowing the piston to escape this causing the tire to _____ in a controlled manner.

Answer 30

deflate