Ice Control + Rain Removal Flashcards
Two types of ice control:
De-icing.
Anti-icing.
Rough, opaque ice that forms when small droplets of water freeze when striking the aircraft. Causes drag and deforms airfoil.
Rime ice.
Most dangerous ice. Formed by flying through supercooled ice or freezing rain. Adds a lot of weight and is difficult to break loose.
Glaze ice.
3 factors necessary for rime or glaze to form:
Visible moisture in the air.
Surface of aircraft below freezing temps.
Drops of water must be the appropriate size.
Ice that forms when temperature and dew point are below freezing:
Frost
3 types of ice that form on aircraft:
Rime ice.
Glaze ice.
Frost.
Areas of aircraft that require deicing:
Windshield.
Propeller.
Airfoil.
Carburetor.
Pitot tube.
Types of deicing:
Warm air.
Chemical.
Electrical.
Current for the propeller heating elements is carried into the propeller by:
Brushes.
Slip rings.
Two sources of heat for ice control on recip engine aircraft:
Combustion heaters.
Augmenter tube.
Three types of rain removal systems:
Mechanical.
Chemical.
Pneumatic.
Example of an electrical stall warning device:
Small vane on leading edge of wing.
Example of non-electric stall warning:
Reed type stall warning device.
(Detects low pressure and produces a tone)
3 types of stall warning devices:
Leading edge wing vane.
Reed type.
Stick shaker.
When greater accuracy of indicating systems is needed than is available from DC systems, these are used:
Autosyn.
Magnesyn.
