Icing

Question 1

List the 5 factors involved in the formation, type and intensity of icing

Answer 1

Temperature
Moisture
Nuclei
Lift
Stability of the air

Question 2

Icing requires ________ and the presence of _________

Answer 2

Sub zero temperatures

supercooled water droplets

Question 3

True or false. Water Vapor will not produce significant icing, only hoarfrost

Answer 3

true

Question 4

Liquid Water Content refers to:

Answer 4

The measure of density of water based cloud

Question 5

The greater the amount of ice nuclei the ________ the threat of icing

Answer 5

lower

Question 6

Icing is at its peak at tmeperatures:

Answer 6

just below zero

Question 7

The stronger the lift, the _______ the droplet size, and _________ the potential for clear icing.

Answer 7

larger

the greater

Question 8

Strong lift is found in:

Answer 8

Strong synoptic features such as deep lows and sharp troughs
Unstable clouds such as ACC, TCU and CB
Orographic clouds

Question 9

What are some of the impacts of icing on aircraft

Answer 9

Substantial loss in rate of climb
Reduces visibility
Increase in weight; decrease in lift
Increase in drag and stalling speed
Blocks pitot tubes and air intakes; confuses instruments

Question 10

Some of the most common icing counter measures are:

Answer 10

Pitot tube heater
Pneumatic boots
In flight liquid de icing
De icing or anti icing on the ground before flight
Heating elements