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15 Cards in this Set
- Front
- Back
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Why is it important not to allow ice to be allowed to build up on airplane wing is in flight? |
I distort the shape of the Airfoil and destroys the aerodynamic lift, and also loads the aircraft down |
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Are pneumatic deicer boots operated before ice form or after ice has formed? |
After ice has formed |
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Where does the air come from to operate the pneumatic deicer boots on a reciprocating engine powered aircraft? |
From the discharge side of the vacuum pump used to power the gyro instruments |
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What is the purpose of the oil separator in the deicer system? |
It is used to separate the air from the lubricating oil before it is delivered into the the deicer boots |
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What is meant by a wet vacuum pump? |
A pump that uses engine oil to lubricate its steel vanes |
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How are rubber deicer boots cleaned? |
Wash with mild soap and water |
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How does the thermal anti-icing system operate? |
Hot compressed bleed air is ducted into the special chamber between the double skin and leading edge of the wing, the hot air is then controlled by a timer so ice is allowed to build up, the hot air breaks it from bonding to the skin and air blows it away. |
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What is used to remove Frost from an aircraft before flight? |
A mixture of isopropyl alcohol and ethylene glycol |
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How is ice prevented from forming on the windshield of a modern jet transport airplane? |
Through a heated element embedded in the windshield whereby electric current heats the windshield and keeps ice from forming on it |
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How is ice kept from forming on the pitot tube of an airplane? |
Through a heating element built in the pitot tube using electric current |
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What are two ways rain can be kept from obstructing the pilot's vision through the windshield of an airplane? |
By blasting it away with high velocity compressor bleed air or wiped away by hydraulic or electric powered windshield wipers |
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When should rain repellent be used on an airplane windshield? |
Only when it is wet with rain. |
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How is carburetor ice prevented in the engines of smaller aircrafts? |
Heated air is directed into the carburetor from a muffler around part of the engine exhaust system |
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How are rubber deicer boots attached to the leading edges of aircraft wings and tail surfaces? |
With machine screws and rivnuts, and it can also bonded to the surface with an adhesive |
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What keeps an electrically heated windshield from overheating? |
Heat sensors built into the windshield control the current that is used to heat the windshield |
