Night Operation
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1
When do you use peripheral vision to fly your drone?
At night when the rods in your eyes are active
2
How long does it take for the rods to become more efficent than your cones?
7 minitues to become equal, 30 mins for full sensitivity
3
Why should you avoid tobacco use for night time operation?
It decreases isual sensitivity at night due to the carbon monoxide increase
4
What are the 4 night vision illusions?
Autokinesis
False Horizon
Reversible Perspective Illusion
Flicker Vertigo
False Horizon
Reversible Perspective Illusion
Flicker Vertigo
5
What is autokinesis?
When you stare at a bright light with a dark backround the light will apear to move even if its not
6
What is false horizon?
A line of lights that make you think a certain straight line is the horizon when in reality its not, like water refelcting on water
7
What is reversable perspective illusion?
Happens when your looking at light at night and it appears to be moving away from you but its actually coming towards you
8
What is flicker vertigo?
Flashing lights with a frequency of 4 to 20 cycles per second can produce nausea, vomitting, and vertigo
9
What are some reasons you can lose line of sight when flying at night?
Drone behind an obstacle
Could be entering a cloud/fog
Could have crashed into terrain or into a structure
Anti collison lights have stopped or failed
Could be entering a cloud/fog
Could have crashed into terrain or into a structure
Anti collison lights have stopped or failed
10
When do you need approval for flying at night?
When flying in class B C D or E2 (E2 starts at surface)
11
Where is the red nav light located on the plane?
Left wing
12
How many strobe lights are required to fly at night?
1
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