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electrical systems
AE3
Question | Answer |
---|---|
What are the two primary purposes of the lighting system in an aircraft? | To provide specialized light sources outside the aircraft and to illluminate the interior |
Generally speaking, what composes a light assembly? | A housing fixture, a lamp and a base |
How can you keep bulbs clean? | Avoid touching the glass bulb with bare hands if possible |
What are the most common types of lamp bases? | Single or double contact bayonet (push in and turn) |
When is the single contact lamp base used? | In single wire systems |
When is the double lamp base used? | Where the single wire system is not practivale |
What is the purpose of the index-type lamp base? | To assure that the lamp is seated in the socket so that the light shines in the proper direction |
What is the grain wheat lamp? | It is a lamp that is designed to last the life of an aircraft. |
How are bulb shapes designated | By the combination of a letter and numeral |
What is indicated by the letter designation of the bulb | The shape of the bulb |
What is indicated by the number of designation of a bulb? | The measure of the approximate maximum diameter of the bulb in the eights of an inch |
What does the code "G" mean? | Globular |
What does the code "GG"? | Grimes globular |
What does the code "S" mean? | Straight |
What does the code "T" mean? | Tubular |
What does the code "PAR" mean? | Parabolic aluminum reflector |
What does the code "R" mean? | Reflector |
What is indicated by the code "T-6" | Tubular shape and a 6/8 diameter |
How is the bulb finish indicated? | By the letter precedeing the MS dash bumber (R=red, S=silver bowled, if no letter the glass is frosted or clear) |
What is a common use of the parabolic and sealed beam lamp? | Landing, Taxi and signal lights |