- fr8ycat

LOL, well that one was there too. But since you asked for 3 and Rime, clear, frost & mixed is 4, well I chose the wrong one again!

#1- Clear. Appearance is hard and glossy formed by large water droplets. The flow-back is greatest at temperatures just at O° C. The result is a sheet of solid, clear, glazed ice with very little air enclosed.

#2- Rime. Brittle and frost like formed by small water droplets. O° C and –40° C.

#3- Mixed ice is a combination of rime and clear ice.

Anti-icing is turned on before the flight enters icing
conditions. Typically this includes carburetor heat,
prop heat, pitot heat, fuel vent heat, windshield heat,
and fluid surface deicers (in some cases).
Deicing is used after ice has built up to an appreciable
amount. Typically this includes surface deice
equipment.

Propeller Anti-icers: Ice often forms on the propeller
before it is visible on the wing. Props are treated with
deicing fluid applied by slinger rings on the prop hub
or with electrically heated elements on the leading
edges.

Wing Deicer, and Anti-icing Systems: There is
presently one type of wing deicer�boots�and two
anti-icing systems�weeping wing systems (fluid
deice systems) and heated wings�that are commonly
used in general aviation today. For the most part,
general aviation aircraft equipped to fly in icing conditions
use boots and, to a lesser extent, weeping
wings. Hot wings are typically found on jets and will
not be discussed in this publication.

Boots are inflatable rubber strips attached to and conforming
to the leading edge of the wing and tail surfaces.
When activated, they are pressurized with air
and they expand, breaking ice off the boot surfaces.