11.14 lights Flashcards
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
what is standby cabin lighting
in electrical power failure, illumination lighting will show
light in the cockpit must be installed so that
direct rays are shielded from the pilots, no reflections onto the pilots
what type of lights provide background light in the cockpit
dome lights
what are the different types of instrument lighting
integral, wedge, pillar, bridge, trans-illuminated panels, glare shields, floodlighting
whats the function of a glare shield
stop natural light blurring out instruments
what is a wedge light
two wedged pieces that cover an instrument
what are trans illuminated panels
bonded layers of acrylic plastic
what is floodlighting usually used for
general illumination of instruments
what are the 2 types of cockpit warning system
central warning system, crew alerting system
what colour is ALERT in the cockpit
red
what colour it CAUTION in the cockpit
yellow
what colour is ADVISORY in the cockpit
white, blue and green
the master switch to test all lighting has what 3 options
test, bright, dim
what type of lighting is cabin lighting
indirect lighting, wash lighting
where can cabin lighting be controlled
cabin management system
how do gas discharge lights start and whats needed
very high voltage for light generation
explain the light type and when they are on in the lavatory
dome light and are always on fi the aircraft has power
how are cargo lights protected
with tempered glass or another durable material
what lighting must there be in the event of an emergency
illuminated exit routes and external lighting
why are emergency lights at floor level in the cabin
incase the cockpit fills with smoke you can still see them
what is luminescense
shows light without the need of an energy source
