Ice and Rain Control Systems

A&P Oral

18 cards   |   Total Attempts: 182
  

Cards In This Set

Front Back
Describe the operating principle of inflatable deicer boots.
Pneumatic... Rubber inflatable boots that are attached to the leading edges of the wings and stabilizers that are alternately inflated to break away the ice that accumulates.
What are two methods of inflating pneumatic deicer boots?
Engine driven air pump or bleed air.
What methods are used to attach deicer boots to the leading edges of wing and tail surfaces?
Cement, Fairing strips and/or screws.
What is the purpose of an air-oil separator in a pneumatic deicer system?
To prevent the oil from deteriorating the rubber boots.
What is used to clean deicer boots?
Mild soap and water.
What must be done before you can make a cold patch repair to a deicer boot?
Relieved from its installed tension.
What component of a pneumatic deicer system normally allows suction to be supplied to the boots to hold them down in flight?
The solenoid distributor valve.
Describe the operating principle for thermal anti-icing systems?
Prevents ice from forming on the leading edges from hot air that passes between the skins.
What methods are used to supply heated air for thermal anti-icing systems?
Bleed air from turbine compressor.Engine exhaust heat exchangers.Ram air heated by combustion heater.
How is overheating prevented in a thermal anti-icing system using bleed air?
A thermal switch will cause a shut-off valve to close and stop the flow of bleed air.
In a thermal anti-icing system, what happens to the air after it has heated the leading edge of the wing?
Exhausted to the atmosphere at the wingtip or at points where ice formation could be critical.
What problems are associated with electrically heated windshields?
Delamination, arcing, scratches and discoloration.
What is windshield delamination?
Separation of the plies.
What does arcing usually indicate in an electrically heated windshield?
A breakdown in the conductive coating.
Name the three methods of removing rain from aircraft windshields.
Wipers, pneumatic systems, and chemical repellant.