11.12 ice/rain protection

Question 1

what are the 3 most common types of ice in flight

Answer 1

clear ice, rime ice, mixed ice

Question 2

what is clear ice caused by

Answer 2

large waterdroplets where a small part freezes instantly then slowly freezes more over time

Question 3

what does clear ice look like

Answer 3

clear, glaze, smooth, hard

Question 4

is clear ice easy to remove with de-icing equipment

Answer 4

no

Question 5

what is rime ice caused by

Answer 5

small water droplets that freeze rapidly

Question 6

what does rime ice look like

Answer 6

white clook, rough surface

Question 7

describe the rime ice characteristics and is it easy to remove

Answer 7

brittle, easy to remove

Question 8

what is mixed ice

Answer 8

combination of rime ice and clear ice

Question 9

what can ice build up cause on aircraft

Answer 9

disturbed airflow, ingested ice, uneven weight, skin damage

Question 10

what are 2 in flight visual ice detection methods

Answer 10

wing inspection lights, visual ice indicators

Question 11

whats a hot rod detector

Answer 11

rod on the cockpit window area that ice builds up on

Question 12

how does a rotary ice detector work

Answer 12

spins freely with no ice but gets harder with ice build up

Question 13

ice can only be formed when

Answer 13

there is moisture and freezing temperatures

Question 14

ice detector sensors fall under what 3 certification types

Answer 14

primary auto, primary manual, advisory

Question 15

when is anti-icing turned on

Answer 15

before ice has formed

Question 16

whats de-icing used for

Answer 16

removing ice that has already formed

Question 17

on large turbine aircraft what is the preferred method of ice control

Answer 17

anti ice

Question 18

where is thermal pneumatic anti ice usually used

Answer 18

leading edges

Question 19

what is WAI

Answer 19

wing anti ice

Question 20

where does hot bleed air come from for anti icing

Answer 20

compressor

Question 21

the ducts that carry bleed air for anti ice are joined by sealing it with what seal

Answer 21

hermetically sealed

Question 22

what is ACIPS

Answer 22

aerofoil and cowl ice protection system

Question 23

what does the WAI valve control

Answer 23

flow of bleed air to the ducts

Question 24

are both wings heated evenly

Answer 24

yes

Question 25

whats EAI

Answer 25

engine anti ice

Question 26

where has anti ice on the engine

Answer 26

inlet cowl

Question 27

how are cockpit windows anti iced

Answer 27

by electrically heating them

Question 28

what cockpit window heating levels are there

Answer 28

normal, high

Question 29

whats the main disadvantage of chemical anti ice

Answer 29

the fluid will run out

Question 30

where are pneumatic de-ice boots mainly found

Answer 30

wings, stabs

Question 31

whats the function of de-icing boots

Answer 31

expand with pneumatic pressure removing ice

Question 32

what are the 3 main rain controls

Answer 32

chemical repellent, pneumatic removal, windshield coating

Question 33

whats the name of the rain repellent fluid

Answer 33

rainboe

Question 34

whats the windshield surface coating called

Answer 34

hydrophobic coating

Question 35

what can you not apply to the windhsield with hydrophobic coatings

Answer 35

wax or polish

Question 36

what do aircraft with water and waste systems use to prevent ice formation

Answer 36

electrical heaters

Question 37

how many electrically operated wipers are there

Answer 37

2