Icing Part 2(oxford)

Question 1

Supercooled water droplets can exist in clouds at temperatures as low as -

Answer 1

-40c

Question 2

Large supercooled droplets can be found in -

And the temperature?

Answer 2

Cu, CB and NS

0 to -20

Question 3

Small supercooled water droplets can be found:

1. Upper levels of(and temperature) -
2. -

Answer 3

Cu, CB and NS. -20 to -40

ST, SC, AC and AS. 0 to -40c

Question 4

Below -__°C only very tiny supercooled water droplets can exist.

Answer 4

-40c

Question 5

Rime ice is associated with what temperature range?

Water droplet size?

Type of cloud?

Answer 5

0 to -40.

Small

Ns, As, Ac, SC, St and the parts of heap clouds where
supercooled water droplets are small(upper levels of Cu, CB or NS)

Question 6

Clear ice is associated with what temperature range?

Water droplet size?

Type of cloud?

Answer 6

0 to -20

large

Cu, CB, NS.

Question 7

Rain ice temperature range?

Altitude range?

Associated conditions?

Answer 7

below 0c

Low altitude, about 1 000ft.

ahead of a warm front or occlusion

Question 8

The most dangerous type of ice -

Answer 8

Rain ice

Question 9

There are two situations where hoar frost can occur:

Answer 9

1. On the ground:

Temperatures below freezing if aircraft is parked outside overnight. Water vapor turns directly into ice

2. In flight:

If a rapid descent is made from a very cold region to a warm moist layer.

If a climb is made from a temperature below 0°C through an inversion

Question 10

The most likely temperature for icing?

Answer 10

-10