Ice and Rain Control Systems Orals

Sixteen vocabulary flashcards covering major terms and components involved in aircraft ice and rain control systems.

Ice Accumulation on Wings

Build-up that distorts the airfoil, destroys lift, and adds weight to the aircraft.

Pneumatic Deicer Boots

Inflatable rubber boots on leading edges that expand after ice forms, cracking it so airflow blows it away.

Air Source for Deicer Boots (Reciprocating Engines)

Discharge side of the engine-driven air (vacuum) pump used for gyro instruments.

Wet Vacuum Pump

Vacuum pump with steel vanes lubricated by engine oil.

Dry Vacuum Pump

Vacuum pump with self-lubricating carbon vanes that requires no oil.

Oil Separator

Device that removes lubricating oil from the discharge air of a wet vacuum pump before it reaches deicer boots.

Thermal Anti-Icing System

System that routes hot compressor bleed air into a double-skin leading edge to loosen and shed ice.

Isopropyl Alcohol–Ethylene Glycol Mixture

Fluid mixture used to remove frost from aircraft surfaces before flight.

Windshield Heater Element

Embedded electrical grid that warms jet transport windshields to prevent ice formation.

Pitot Heat

Electric heater built into a pitot tube to keep ice from forming.

Bleed-Air Rain Removal

High-velocity stream of compressor bleed air directed across the windshield to blow rain away.

Windshield Wipers

Electrically or hydraulically driven arms that mechanically clear rain from the windshield.

Rain Repellent

Chemical applied only to a wet windshield to improve water runoff and visibility.

Carburetor Heat

Heated air drawn from a muff around the exhaust system and directed into the carburetor to prevent ice.

Deicer Boot Attachment

Method of fastening boots using machine screws and Rivnuts or bonding with adhesive.

Windshield Heat Sensors

Built-in sensors that regulate current to prevent electrically heated windshields from overheating.