icing

Question 1

what are all the types of icing

Answer 1

• structural
  
  • clear
  • rime
  • mixed
• instrument
• induction
• intake
• carburetor
• frost

Question 2

structural icing

Answer 2

1. visible moisture
2. aircraft surface temperature below freezing

3 types
clear, rime & mixed

Question 3

clear ice

Answer 3

type of structural icing

• MOST DANGEROUS
  -heavy, hard & difficult to remove
• forms when water drops freeze slowly as a smooth sheet of solid ice
• usually 10°- 0°C by large supercooled drops of water

Question 4

rime ice

Answer 4

type of structural icing

• opaque, white, rough
• formed by small supercooled water drops freezing quickly
• occurs at lower temperatures that clear

Question 5

mixed ice

Answer 5

type of structural icing

clear & rime form simultaneously

Question 6

instrument ice

Answer 6

structural icing forming over aircraft instruments and sensors, such as pitot & static

Question 7

induction ice

Answer 7

ice REDUCING the amount of air for the engine intake

Question 8

intake ice

Answer 8

BLOCKS engine intake

Question 9

carburetor ice

Answer 9

• 5° - 20° c
• high air velocity through the venturi that then absorbs the heat by vaporization of the fuel
• indications: 1. drop in RPM then 2. engine roughness

Question 10

frost

Answer 10

ice crystals caused by sublimation when both the temperature and d dew point are below freezing