11.14 lights Flashcards
(45 cards)
what is luminous intensity measured in
candles or candela
what is luminous intensity
intensity in a given direction
what is luminous flux
amount of light radiated by a light source per second
what does incadescence refer to
emissions of visible radiation by a hot body
what 3 voltages are the aircraft lamps used
5v, 12v, 28v
why must halogen bulbs not be touched by the hand
they can get extremely hot and stuff from the hand can bake onto the glass and damage its life
what does LED stand for
light emitting diode
what are the advantages of LEDs
reduced mass, reduced power consumption, longer life span, resilient to knocks/vibration
whats the disadvantage of LEDs
operating temps greater than 80 degrees celcius
what 2 main categories can lighting on aircraft be broken down into
external, internal
where is the external red light visible from
directly ahead 110 degrees to the left side
where is the external green light visible from
directly ahead 110 degrees to the right
where is the external white light visible from
directly to the rear 70 degrees to the left and right
what side is the red light
left
what side is the green light
right
where is the white light
tail
where are anti collision lights usually located
upper/lower fuselage and wing tips
what are the 2 types of anti collision beacon
rotating beam, flashing lights
what do that anti collision lights do
mark the aircrafts position
what are the positions of the landing lights
wing leading edges, undercarriage/legs, flap track fairings
when do the landing gear lights turn on
when the gears are fully down
where are lights located to see ice
leading edge, engine intake lip
whats the reason for logo lights
ATC can identify aircraft, promote airline
whats the main function of emergency cabin lighting
show the route to exits
